Thursday, June 24, 2010

Soy: the complete protein!

By Marie Oser
Obesity is a health problem of epidemic proportions and the high fat cholesterol laden Western diet has increasingly come under fire in recent years.

Home cooks are choosing vegetarian alternatives more often than ever before and the market for soy milk, burgers, breakfast sausages, snack bars and even tofu has exploded.1

Soy protein is a complete high quality protein, comparable to meat, milk and eggs, but without the unhealthy baggage.2 It is very good news that consumers have been buying vegetarian products in record numbers because of the health benefits and environmental concerns.

However, old myths die hard and there are those who would have you believe that a plant based menu is somehow lacking and that one must follow the ‘food combining’ strategy promoted in the 1971 bestseller, “Diet for a Small Planet.” (Author, Frances Moore Lappe reversed her position in the 1981 edition.)

The World Health Organization (WHO) addressed the quality of soy protein and whether or not it supplies all of the amino acids that we need almost 20 years ago. A 1991 Food and Agriculture Report (FAO) identified soy as a high quality protein that meets all of the essential amino acid requirements of humans.3 The 1988 American Dietetic Association Position Paper discredited ‘Protein Combining’ stating, “Adequate amounts of amino acids will be obtained if a varied vegan diet, containing unrefined grains, legumes, seeds, nuts and vegetables is eaten on a daily basis” 4

For more than 5,000 years, soy has been a dietary staple and the primary source of complete, high quality protein for millions of people worldwide. So, where did this flawed information originate? An outdated method of evaluating protein requirements, the Protein Efficiency Ratio (PER), which based the protein quality for humans on the growth of young rats, whose amino acid requirements are vastly different from humans.

From 1919 until recent years the PER had been a widely used method for evaluating the quality of protein in food. In 1993 the FDA adopted the PDCAAS method, which is based on human amino acid requirements and is more appropriate than a method based on the amino acid needs of animals.

Scientists who have studied the impact of soy protein on heart health for many years have concluded that soy protein, as part of a diet low in saturated fat and cholesterol helps to reduce blood cholesterol levels and the risk of coronary heart disease. The results of these studies have led governments to approve soy protein health claims related to heart disease (US FDA 1999).

Soy protein is the only protein with a health claim and is clinically proven to help improve heart health. Since 1996, eleven countries have established heart health claims for soy protein.5

Meat and dairy products are the only dietary source of cholesterol and a major source of fat, particularly saturated fat. Animal protein is associated with an increased risk of heart disease, diabetes and a number of cancers, as well as the development of numerous risk factors that lead to these diseases, including obesity and hypertension.

Therefore, it follows that replacing animal products with plant foods, such as soy is a nutritionally sound dietary strategy.

Marie Oser is a best-selling author, writer/producer and host of VegTV, Follow Marie on Twitter: http://twitter.com/vegtv

Sources:
1. Soyfoods:The U.S. Market 2009. Soyatech, LLC and SPINS, Inc. April 16, 2009
2. Food and Nutrition Board, Institute of Medicine. Dietary Reference Intakes for Energy, Carbohydrate, Fiber, Fat, Fatty Acids, Cholesterol, Protein, and Amino Acids. Washington, DC: National Academies Press; 2002.
3. FAO/WHO. Protein Quality Evaluation Report of Joint FAO/WHO Expert Consultation. Rome: Food and Agriculture Organization of the United Nations, 1991.
4. Havala, S. and Dwyer, J. (1988). ‘Position of the American Dietetic Association: vegetarian diets - technical support paper’, J. Am. Diet. Assn., 88, 352-355.
5. Japan 1996, U.S. 1999, UK 2002, South Africa 2002, Philippines 2004, Indonesia 2005, Korea 2005, Brazil 2005, Chile 2005, Maylasia 2006, Columbia 2008

Tuesday, June 22, 2010

RI’s emissions up but still below global average: BMKG

Adianto P. Simamora, The Jakarta Post, Jakarta | Tue, 06/22/2010 9:30 AM | Headlines

Indonesia’s carbon emissions increased in tandem with the country’s economic growth over the last four years, but are lower than the global average, says a government report.
The Meteorology, Climatology and Geophysics Agency (BMKG) report said that Indonesia’s carbon emissions were measured at 382 parts per million (ppm) in 2009, up from 372 ppm in 2004. The average global level of carbon emissions in 2009 was 387 ppm.

“The report measured emissions. It did not supply the figure used to dub Indonesia the planet’s third largest [carbon] emitter,” Edvin Aldrian, BKMG’s climate change and air quality unit head, told The
Jakarta Post.

Large forest fires and peatland forest conversions have made Indonesia the world’s third largest carbon emitter, after the US and China, say independent reports. Edvin said that the study included emissions from forest fires.

The BMKG established a global atmosphere watch (GAW) station in Bukitkotobang, West Sumatra — one of only 27 stations globally — to measure Indonesia’s emissions of greenhouse gases such as carbon dioxide, methane, nitrous oxide and sulfur hexafluoride.

The concentration of methane measured in Indonesia was 1,825 parts per billion (ppb) in 2009, up from 1,810 ppb in 2004, according to the report.

Methane, a greenhouse gas 21 times more harmful than carbon dioxide, is typically released by untreated garbage.

Indonesia, led by West Java, produced 61.68 million kilograms of waste-related methane emissions in 2008, according the Environment Ministry.

Households were the country’s largest source of energy-related carbon emissions. Java’s households alone produced more than 100 of the country’s 175 million tons of emissions that year.

The industrial sector released 154 million tons of emissions in 2007 — up from 119 million tons in 2000 — due to a massive shift to fossil fuel use.

Indonesia has budgeted Rp 83 trillion (US$9.21 billion) to cut emissions by 26 percent by 2020 and vowed to reduce emissions 41 percent if rich nations provided financial assistance.

The emissions increase shows that the government has done nothing after it hosted the UN Climate Change Conference in Bali in 2007, an environmental activist said.

“The increase puts Indonesia in a difficult position during climate negotiations,” said Teguh Surya, an Indonesian Environmental Forum (Walhi) climate campaigner.

The government can not only say it will cut emissions. It must develop concrete programs that will be supported by the Indonesian people, Teguh said.

“Otherwise, Indonesia will be called a liar on climate issues.”

Source: The Jakarta Post

Friday, June 18, 2010

Vegtetarian Diet Promotes Healthy Mood State

By Marie Oser

It has been well documented that people who choose a vegetarian diet enjoy superior health with lower risks for a variety of disorders, such as diabetes, heart disease, and cancer.1 Now, science has presented us with yet another reason to choose the healthful vegetarian lifestyle.

A new study published in Journal Nutrition has linked the vegetarian lifestyle with healthier mood states.2 It turns out that vegetarians are not only a lot healthier than the rest of the population, apparently, they are a lot happier, too. How does this finding challenge current recommendations?

Vegetarian diets exclude fish, long touted as a major dietary source of omega-3 fats. Omega-3 fatty acids are essential nutrients that cannot be synthesized in the body and must be obtained from dietary sources.

Omega-3 fats, in the form of DHA and EPA are critical regulators of brain cell structure and function. Omnivorous diets low in EPA and DHA have been linked to impaired mood states.

According to the researchers at Arizona State University, the vegetarians in their study experienced significantly less negative emotion than the omnivores. This is good news for everyone, because consuming fish is often the subject of government health advisories.

The oceans are increasingly polluted and contain unacceptable levels of contaminants, such as dioxin and PCPs, and a recent government study revealed widespread mercury contamination of fish in streams across the U.S.3 Consuming farmed fish can also be problematic, as raising fish in this way relies on a processed diet and requires the use of antibiotics and other elements to prevent the spread of disease.

Nuts, seeds, and polyunsaturated vegetable oils are rich sources of fat soluble vitamins and essential fatty acids and in fact, the omega fats in plant foods may be even more important to your health than that found in fish.

A Pennsylvania State University study showed that omega-3 fatty acids from plant sources actually promote bone formation and may help to reduce the risk for osteoporosis by inhibiting excessive bone loss.

Omega-3 fat in the form of alpha-linolenic acid (ALA) is found dark green leafy vegetables, nuts, seeds, and a variety of vegetable oils.

Plant sources of essential fatty acids:
  • Dark green leafy vegetables
  • Flaxseed
  • Flaxseed oil (also called linseed oil)
  • Chia seeds
  • Pumpkin seeds
  • Sunflower seeds
  • Canola oil
  • Hemp oil
  • Soy oil
  • Wheat germ
  • Soybeans
  • Tofu
  • Tempeh

Additionally, plant sources of this essential nutrient tend also to be rich in vitamin E, which has many benefits including promoting cardiovascular health.

Certainly, vegetarians attain optimal health by consuming plant-based meals. They are leaner and have more energy than their omnivorous counterparts and now it is apparent that they enjoy a healthier mood state, as well.

Marie Oser is a best-selling author and writer, producer, and host of VegTV, Follow Marie on Twitter: http://twitter.com/vegtv

1. Position of the American Dietetic Association: Vegetarian Diets 
Journal of the American Dietetic Association - July 2009; 109;(7) 1266-12822. Beezhold BL, Johnston CS, Daigle DR. Vegetarian diets are associated with healthy mood states: a cross-sectional study in Seventh Day Adventist adults Nutrition Journal 2010, 9:26 (1 June 2010)

3. Scudder, B.C., Chasar, L.C., Wentz, D.A., Bauch, N.J., Brigham, M.E., Moran, P.W., and Krabbenhoft, D.P., Mercury in fish, bed sediment, and water from streams across the United States, 1998–2005. U.S. Geological Survey Scientific Investigations Report 2009–5109, 74 p., August 2009

Source: http://green.yahoo.com

Thursday, June 17, 2010

Seven myths about veggies

By Lori Bongiorno

Is it healthier to eat raw veggies or to cook them? Is fresh broccoli more nutritious than frozen? Is eating iceberg lettuce a waste of time?

You may be surprised by the answers to these seemingly simple questions. In fact, there are several misconceptions when it comes to vegetables. The one universal truth is that most of us could be eating more of them.

As summer approaches, we have more vegetable choices than at any other time of year. Here's a guide to what's fact and what's fiction when it comes to eating your veggies.


Myth: Fresh vegetables are more nutritious than frozen

Fact: Studies show that sometimes you can get more nutrients from frozen veggies, depending on variety and how old the vegetables at your supermarket are. That's because produce starts losing nutrient quality as soon as it's picked.

Frozen vegetables are flash-frozen right after harvest so they are preserved at their peak of freshness when they are most nutritious. Your best bet in terms of taste, nutrition, and the environment is still local in-season produce. When that's not an option frozen can be a better choice (from a nutrient standpoint) than spinach that takes two weeks to reach your table.

Myth: Cooked veggies are less nutritious than raw

Fact: It depends on the vegetable. "Cooking destroys some nutrients, but it releases others," says Marion Nestle, author of What to Eat. It destroys vitamin C and folic acid, according to Nestle, which is why it's not a great idea to cook oranges.

On the other hand, she says, cooking releases vitamin A and the nutrients in fiber and makes them easier to digest. It's also easier for your body to absorb more lycopene, a cancer-fighting antioxidant, in cooked tomato sauce than from raw tomatoes.

Steam or roast veggies instead of boiling, which leaches out water-soluble vitamins into the cooking water.


Myth: Iceberg lettuce doesn't have any nutrients

Fact: Iceberg lettuce is mostly water so it's hardly loaded with vitamins, but a large head does contain small amounts of protein, fiber, vitamins, and minerals.

You'll get more nutrients from other greens that have less water such as romaine or butterhead lettuce, but contrary to popular belief, iceberg lettuce does have some nutritional value.

Myth: Local vegetables are always cheaper

Fact: It's certainly true that local produce can be good for your budget. This is especially true during the peak of harvest when farmers need to get rid of an abundant crop and there is a lot of competition.

However, there are no guarantees. Local food "is not in any way subsidized so you are paying the real cost of producing the food, and the economies of scale are not there," says Nestle.

Some tips for finding the best deals at your local farmers' market: Shop at the end of the day when farmers are likely to mark down their prices in order to get rid of their inventory. (Go early in the day if selection is more important than price.) Ask your farmer for a volume discount if he or she doesn't already offer one. Take advantage of special deals on bruised or overripe veggies. Prices vary from farmer to farmer so shop around before buying.

Myth: Potatoes make you fat

Fact: Potatoes are virtually fat-free and low in calories. These delicious and inexpensive root vegetables contain a healthy dose of fiber, which can actually make you feel satisfied for longer and help you lose weight.

It's not the potatoes themselves that make you fat. It's how you cook them and what you slather on your spuds that can cause you to pack on the pounds.

Myth: Bagged salads are squeaky clean

Fact: They're not nearly as clean as you may think. Consumer Reports tests found bacteria that are "common indicators of poor sanitation and fecal contamination" in 39 percent of the 208 packages of salad greens it tested. It didn't find E. coli 0157:H7, listeria, or other disease-causing bacteria in its samples.

But it's still a good idea to give greens a good rinse to remove residual soil before eating even if the bag says they're "pre-washed" or "triple-washed."

Myth: Farmer's markets only have organics

Fact: Just because a vegetable (or anything for that matter) is sold at a farmers' market does not mean that it's organic. It still must be certified organic by the U.S. Department of Agriculture for a guarantee that it was grown without synthetic fertilizers and pesticides.

Some farmers will say they are in the process of getting certified, they grow crops without synthetic chemicals but can't afford the certification process, or they only use chemicals when they have no choice and don't use them when it's close to harvest time. It's your call on whether you trust that farmer.

Environmental journalist Lori Bongiorno shares green-living tips and product reviews with Yahoo! Green's users. Send Lori a question or suggestion for potential use in a future column. Her book, Green Greener Greenest: A Practical Guide to Making Eco-smart Choices a Part of Your Life is available on Yahoo! Shopping and Amazon.com.

Source: http://green.yahoo.com

Thursday, June 10, 2010

Ending Anonymity in Food

By Chris Combs, National Geographic News, from South by Southwest in Austin, Texas
When you buy a bell pepper, where does it come from?

In the United States, it might have a sticker that tells you its country of origin. But do you know which variety it is, or how it was fertilized? Or even when it was grown?

Massachusetts Institute of Technology graduate student Elizabeth Greene thinks that many of the wrinkles in the world's food supply are caused by a lack of communication.

Each farm knows what it grows and how it grows them. Each distributor knows which farms they do business with. But as fruits and vegetables funnel into the world's massive food distribution system, the details are lost, and a restaurant's supplier buying vegetables on a loading dock really has no idea where they came from or how responsibly they were grown.

"What if [farmers] could even connect with the end consumer rather than being six or seven degrees removed?" said Greene in a follow-up interview conducted via e-mail.

What if produce in the grocery store was labeled with its precise variety, with detailed information about its origin, how it traveled, and how sustainably it was grown?

There are lots of existing technologies, such as mobile phones and the Internet, that could be used to help information travel along with the food. "We have the tools to solve this; this isn't going to require some radical new invention," says Greene. Someday those peppers could be tied back not only to their country, but their farm, and how they were fertilized, watered, and stored.

"The term 'organic' is a proxy for actually having data about the food that you're buying," says Greene--it's a substitute for actually knowing how the food was grown.

She thinks that not only could this information tell us what we're eating, and help us support sustainable and local agriculture, but that it could help address world hunger.

Malnourishment is "in part a result of farmers getting a small piece of the dollar paid for their product," said Greene, and distributing weather, ready buyers, responsible practices, and global market prices -- not just the local price -- could help farmers get top dollar for their food... thus letting them feed their families and bolstering already-low economies.

"Most farmers [in developing countries] have access to mobile" phones, said Greene, which could be used to directly connect restaurants with individual farmers.

Also, these farmers don't have a neutral source of data about how best to use fertilizers or pesticides. "Because they make such a small margin on their crops, farmers in the developing world have an incentive to push their yields as high as they can. They get most of their information about what to plant and spray from their seed and chemical companies," said Greene.

Seems like there are lots of reasons to communicate about our food as it gets from farm to table. So, what's the catch? Cost, for one--the tech required has to come from somewhere. And it's quite possible that big players in the agrochemical or food distribution markets won't be thrilled to change.

But a more insidious barrier might be the difficulty of talking about food. It's a very emotional issue, "and it should be," says Greene. Everyone needs to eat, and many people care about doing it.

"We are thinking in binary terms: food is organic or conventional, local or global, healthy or unhealthy." But an organic-certified product might be shipped across the country--is that better than a locally-grown crop that failed organic certification on a technicality? Or because the farm couldn't afford the certification?

"If I'm buying blueberries and could find out in an instant that one pint was a dollar more than the other because the more expensive blueberries were grown with fewer synthetic chemicals, or could see that by paying a dollar more here I am saving a dollar in long-term health costs, I would able to make an informed decision about my food."

Photo: Elizabeth Greene

Source: http://blogs.nationalgeographic.com

Food industry dictates nutrition policy

By Jonathan Safran Foer, Special to CNN
October 30, 2009 10:10 a.m. EDT

Editor's note: Jonathan Safran Foer wrote the novels "Everything is Illuminated" and "Extremely Loud and Incredibly Close." His latest book, the nonfiction "Eating Animals," (Little, Brown and Co.) will be published November 2. This is the second of two essays Jonathan Safran Foer has written for CNN.com on the consequences of eating meat. In the first, he condemned the practice of raising animals in factory farms and argued that it sickens Americans.

New York (CNN) -- Beyond the unhealthy influence that our demand for factory-farmed meat has in the area of food-borne illness and communicable diseases, we could cite many other influences on public health, most obviously the now-widely recognized relationship between the nation's major killers -- heart disease, No. 1; cancer, No. 2; and stroke, No. 3 -- and meat consumption.

Or, much less obviously, the distorting influence of the meat industry on the information about nutrition we receive from the government and medical professionals.

In 1917, while World War I devastated Europe and just before the Spanish flu devastated the world, a group of women, in part motivated to make maximal use of America's food resources during wartime, founded what is now the nation's premier group of food and nutrition professionals, the American Dietetic Association.

Since the 1990s, the group has issued what has become the standard we-definitely-know-this-much summary of the healthfulness of a vegetarian diet. The association takes a conservative stand, leaving out many well-documented health benefits attributable to reducing the consumption of animal products. Here are the three key sentences from the summary of the relevant scientific literature.

One: Well-planned vegetarian diets are appropriate for all individuals during all stages of the life cycle, including pregnancy, lactation, infancy, childhood and adolescence, and for athletes.

Two: Vegetarian diets tend to be lower in saturated fat and cholesterol, and have higher levels of dietary fiber, magnesium and potassium, vitamins C and E, folate, carotenoids, flavonoids and other phytochemicals.

Three: Vegetarians and vegans, including those who are athletes, "meet and exceed requirements" for protein, the paper notes elsewhere.

And, to render the whole we-should-worry-about-getting-enough-protein-and-therefore-eat-meat idea even more useless, other data suggest that excess animal protein intake is linked with osteoporosis, kidney disease, calcium stones in the urinary tract and some cancers. Despite some persistent confusion, it is clear that vegetarians and vegans tend to have more optimal protein consumption than omnivores.

Finally, we have the really important news, based not on speculation, however well-grounded in basic science such speculation might be, but on the definitive gold standard of nutritional research: studies on actual human populations.

We are constantly lied to about nutrition.
--Jonathan Safran Foer

"Vegetarian diets are often associated with a number of health advantages, including lower blood cholesterol levels, lower risk of heart disease" (which alone accounts for more than 25 percent of all annual deaths in the nation), "lower blood pressure levels, and lower risk of hypertension and type 2 diabetes. Vegetarians tend to have a lower body mass index" (that is, they are not as fat) "and lower overall cancer rates" (cancers account for nearly another 25 percent of all annual deaths in the nation).

If it's sometimes hard to believe that eschewing animal products will make it easier to eat healthfully, there is a reason: We are constantly lied to about nutrition.

Let me be precise. When I say we are being lied to, I'm not impugning the scientific literature but relying upon it. What the public learns of the scientific data on nutrition and health, especially from the government's nutritional guidelines, comes to us by way of many hands. From the start, those who produce meat have made sure that they are among those who influence how nutritional data will be presented to the likes of you and me.

Consider, for example, the National Dairy Council, a marketing arm of Dairy Management Inc., an industry body whose sole purpose, according to its Web site, is to "drive increased sales of and demand for U.S. dairy products."

The council promotes dairy consumption without regard for negative public-health consequences and even markets dairy to communities incapable of digesting the stuff. As it is a trade group, the dairy council's behavior is at least understandable.

What is hard to comprehend is why educators and government have, since the 1950s, allowed the dairy council to become arguably the largest and most important supplier of nutritional-education materials in the nation. Worse, our present federal "nutritional" guidelines come to us from the U.S. Department of Agriculture, the very same government department that has worked so hard to make factory farming the norm in America.

The USDA has a monopoly on the most important advertising space in the nation, those little nutritional boxes we find on virtually everything we eat. Founded the same year that the American Dietetic Association opened its offices, the USDA was charged with providing nutritional information to the nation and ultimately with creating guidelines that would serve public health. At the same time, though, the USDA was charged with promoting industry.

The conflict of interest is not subtle: Our nation gets its federally endorsed nutritional information from an agency that must support the food industry, which today means supporting factory farms. The details of misinformation that dribble into our lives (like fears about "enough protein") follow naturally from this fact and have been reflected upon in detail by writers like Marion Nestle.

As a public-health expert, Nestle has worked extensively with government -- on "The Surgeon General's Report on Nutrition and Health," for one -- and has had decades of interaction with the food industry. In many ways, her conclusions confirm what we already expected, but the insider's perspective she brings has lent a new clarity to the picture of just how much influence the food industry, especially animal agriculture, has on national nutrition policy.

She argues that food companies, like cigarette companies, will say and do whatever works to sell products. They will "lobby Congress to eliminate regulations perceived as unfavorable; they press federal regulatory agencies not to enforce such regulations; and when they don't like regulatory decisions, they file lawsuits. Like cigarette companies, food companies co-opt food and nutrition experts by supporting professional organizations and research, and they expand sales by marketing directly to children."

Regarding U.S. government recommendations that tend to encourage dairy consumption in the name of preventing osteoporosis, Nestle notes that in parts of the world where milk is not a staple of the diet, people often have less osteoporosis and fewer bone fractures than Americans do. The highest rates of osteoporosis are seen in countries where people consume the most dairy foods.

In a striking example of food industry influence, Nestle argues that the USDA has an informal policy to avoid saying that we should "eat less" of any food, no matter how damaging its health impact may be. Thus, instead of saying "eat less meat," which might be helpful, it advises us to "keep fat intake to less than 30 percent of total calories," which is obscure to say the least.

The institution we have put in charge of telling us when foods are dangerous has a policy of not (directly) telling us when foods, especially if they are animal products, are dangerous.

We have let the food industry craft our national nutrition policy, which influences everything from what foods are stocked in the health-food aisle at the local grocery store to what our children eat at school.

In the National School Lunch Program, for example, more than half a billion of our tax dollars are given to the dairy, beef, egg and poultry industries to provide animal products to children, despite the fact that nutritional data would suggest we should reduce these foods in our diets.

Meanwhile, a modest $161 million is offered to buy fruits and vegetables that even the USDA admits we should eat more of. Wouldn't it make more sense and be more ethical for the National Institutes of Health, an organization specializing in human health and having nothing to gain beyond it, to have this responsibility?

The global implications of the growth of the factory farm, especially given the problems of food-borne illness, antimicrobial resistance and potential pandemics, are genuinely terrifying.

India's and China's poultry industries have grown somewhere between 5 and 13 percent annually since the 1980s. If India and China started to eat poultry in the same quantities as Americans -- 27 to 28 birds annually -- they alone would consume as many chickens as the entire world does today.

If the world followed America's lead, it would consume more than 165 billion chickens annually, even without an increase in population. And then what? Two hundred billion? Five hundred? Will the cages stack higher or grow smaller or both? On what date will we accept the loss of antibiotics as a tool to prevent human suffering? How many days of the week will our grandchildren be ill? Where does it end?

The opinions expressed in this commentary are solely those of Jonathan Safran Foer.

Source: http://www.cnn.com

Biofuels: Green energy or grim reaper?

By Jeffrey A McNeely

Biofuels could end up damaging the natural world rather than saving it from global warming, argues Jeff McNeely in the Green Room. Better policies, better science and genetic modification, he says, can all contribute to a greener biofuels revolution.

Traffic in Sao Paulo city centre Europe intends to adapt Brazil's experience with bioethanol
With soaring oil prices, and debates raging on how to reduce carbon emissions to slow climate change, many are looking to biofuels as a renewable and clean source of energy.

The European Union recently has issued a directive calling for biofuels to meet 5.75% of transportation fuel needs by 2010. Germany and France have announced they intend to meet the target well before the deadline; California intends going still further.

This is a classic "good news-bad news" story.

Of course we all want greater energy security, and helping achieve the goals (however weak) of the Kyoto Protocol is surely a good thing.

Little wonder that many are calling biofuels "deforestation diesel"


Send us your comments
However, biofuels - made by producing ethanol, an alcohol fuel made from maize, sugar cane, or other plant matter - may be a penny wise but pound foolish way of doing so.

Consider the following:

  • The grain required to fill the petrol tank of a Range Rover with ethanol is sufficient to feed one person per year. Assuming the petrol tank is refilled every two weeks, the amount of grain required would feed a hungry African village for a year
  • Much of the fuel that Europeans use will be imported from Brazil, where the Amazon is being burned to plant more sugar and soybeans, and Southeast Asia, where oil palm plantations are destroying the rainforest habitat of orangutans and many other species. Species are dying for our driving
  • Wheat. Image: Eyewire The expansion of biofuels would increase monoculture farming
    If ethanol is imported from the US, it will likely come from maize, which uses fossil fuels at every stage in the production process, from cultivation using fertilisers and tractors to processing and transportation. Growing maize appears to use 30% more energy than the finished fuel produces, and leaves eroded soils and polluted waters behind
  • Meeting the 5.75% target would require, according to one authoritative study, a quarter of the EU's arable land
  • Using ethanol rather than petrol reduces total emissions of carbon dioxide by only about 13% because of the pollution caused by the production process, and because ethanol gets only about 70% of the mileage of petrol
  • Food prices are already increasing. With just 10% of the world's sugar harvest being converted to ethanol, the price of sugar has doubled; the price of palm oil has increased 15% over the past year, with a further 25% gain expected next year.
Little wonder that many are calling biofuels "deforestation diesel", the opposite of the environmentally friendly fuel that all are seeking.

With so much farmland already taking the form of monoculture, with all that implies for wildlife, do we really want to create more diversity-stripped desert?

Others are worried about the impacts of biofuels on food prices, which will affect especially the poor who already spend a large proportion of their income on food.

Biotech boost

So what is to be done? The first step is to increase our understanding of how nature works to produce energy.

Amazingly, scientists do not yet have a full understanding of the workings of photosynthesis, the process by which plants use solar energy to absorb carbon dioxide and build carbohydrates.

Forest. Image: BBC Some environmentalists are worried that altered trees will cross-breed with wild trees, resulting in a drooping forest rather than one that stands tall
Biotechnology, its reputation sullied by public protests over GM foods, may make important contributions. According to the science journal Nature, recombinant technology is already available that could enhance ethanol yield, reduce environmental damage from feedstock, and improve bioprocessing efficiency at the refinery.

The Swiss biotech firm Syngenta is developing a genetically engineered maize that can help convert itself into ethanol by growing a particular enzyme.

Others are designing trees that have less lignin, the strength-giving substance that enables them to stand upright, but makes it more difficult to convert the tree's cellulose into ethanol.

Some environmentalists are worried that these altered trees will cross-breed with wild trees, resulting in a drooping forest rather than one that stands tall and produces useful timber and wildlife habitat.

In the longer run, biotech promises to help convert wood chips, farm wastes, and willow trees into bioethanol more cheaply and cleanly, thereby helping meet energy needs while also improving its public image.

Public stake

But that is not nearly enough; bioenergy is too important to be left in the hands of the private sector.

Many of the social and environmental benefits of bioenergy are not priced in the market, so the public sector needs to step in to ensure these benefits are delivered.

An easy immediate step would be to mandate improved fuel efficiency for all forms of transport, beginning with the private automobile. A 20% increase in fuel-efficiency standards is feasible using current technology, and would save far more energy than Europe's biomass could produce.

A refinery (Image: EyeWire)
Biofuels: the next generation
Governments also need to provide leadership in the form of economic incentives to minimise competition between food and fuel crops, and ensure that water, high-quality agricultural land, and biodiversity are not sacrificed on the altar of our convenience.

Calculations of energy return on investment need to include environmental impacts on soil, water, climate change, and ecosystem services.

The bottom line is that biofuels can contribute to energy and environmental goals only as part of an overall strategy that includes energy conservation, a diversity of sustainable energy sources, greater efficiency in production and transport, and careful management of ethanol production.

Jeffrey A McNeely is chief scientist of IUCN, the World Conservation Union, based in Switzerland

Source: http://www.realalternativesite.com