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Showing posts with label soy oil. Show all posts
Showing posts with label soy oil. Show all posts

Tuesday, September 6, 2011

A NEW GM BASED SOYBEAN-WHAT IS THE ADVANTAGE?

The GM food industry never tires of projecting their technological innovations as a panacea for overcoming all the hunger in the world! Without getting into the controversy that surrounds this topic, it is difficult to comprehend why countries are falling prey to the tall claims made by this industry regarding the advantages of GM foods. While one can understand the compulsions of the industry to promote at any cost their so called high tech seeds among farmers because of their huge investments on research, it is the hapless consumer who is being let down by the governments through tacit support to the former. The latest case of a GM product being "pushed" to the consumer concerns a new GM version of soybean that promises "heaven" on earth to the food processing industry!

"The soybean industry is seeking government approval of a genetically modified soybean it says will produce oil lower in saturated fat, offer consumers a healthier alternative to foods containing trans fats and increase demand for growers' crops. Demand for soybean oil has dropped sharply since 2005, when the U.S. Food and Drug Administration began requiring labels to list levels of trans fats, which have been linked to coronary heart disease. Vegetable oil does not naturally contain trans fats, but when hydrogen is added to make it suitable for use in the food industry, trans fats are created. Agribusiness giant Monsanto Co. says oil from its new soybean will meet manufacturers' requirements for baking and shelf life without hydrogenation, resulting in food that's free of trans fats as well as lower in saturated fat. The FDA approved the new bean, called Vistive Gold, earlier this year, and Monsanto and several state and national soybean groups are now seeking approval from the U.S. Department of Agriculture. The USDA's Animal Plant Health Inspection Service said in an email that it has no timeline for making a decision. U.S. farmers harvested more than 3.3 billion bushels of soybeans valued at nearly $39 billion in 2010. But the Iowa Soybean Association said in a letter to APHIS that the industry's share of the food oil market dropped from 83 to 68 percent after the FDA enacted the labeling requirements. Iowa grows more soybeans than any other state. "We believe because of the trans-fat labeling, 4.6 billion pounds of edible soybean oil was not used for food over a three-year period," said Bob Callanan, a spokesman for the American Soybean Association. The oil was turned into biodiesel instead, and farmers got less money for their soybeans, he said".

It is rather mystifying that the superiority claimed for the new version pertains to freedom from trans fatty acids! Which fat of plant origin has this undesirable isomer of unsaturated fatty acids? None, of course. How can the developer compare the oil from the new soybean with hydrogenated fat which has its own functional properties and much sought after plasticity? No comparison at all. Also not sure is the claim that it is a superior frying oil in spite of its higher concentration of unsaturated fatty acids? May be nutritionally it may have some advantages but definitely the claim of superiority over hydrogenated fat for frying and baking is misplaced. Of course with the clout the GM lobby enjoys over the government, one should not be surprised if the safety authorities again blink their eyes and give unconditional clearance to the new GM soybean soon.

Friday, August 27, 2010

IMPROVING STABILITY OF SOY OIL-NEW APPROACH


Palm oil and coconut oil score over other frying oils because of their relatively low content of unsaturated fatty acids which are prone to oxidative rancidity and other off flavor developments. Though Soy oil is one of the most abundant edible oils available at low prices in the global market, its popularity is restricted by the presence of high concentration of linoleic and linolenic acids, the two important unsaturated fats with low resistance to oxidation. In the past this oil was routinely hydrogenated to decrease the unsaturated fatty acid content and make the product more stable. Association of hydrogenation with generation of trans fats, injurious to health, has led to its shunning by responsible industries and now comes the news that genetic engineering technology has been able to suppress a specific gene that is involved in the fatty acid pathway to increase the oleic acid formation in the seed.

"Pioneer Hi-Bred announced on June 8, 2010, that the U.S. Dept. of Agriculture had approved its Plenish™ high-oleic soybean trait for cultivation in the U.S., allowing the high-oleic soybeans to be grown under contract for ongoing field testing in the U.S. and additional oil testing by food companies. The Food and Drug Administration had completed its review of the soybeans in 2009. Pioneer and its commercial partners will continue to do field testing this year and next, with full commercialization expected in 2012. The company has agreements with 15 oil processors, restaurants, foodservice companies, and food manufacturing companies testing the high-oleic oil in commercial situations. Pioneer scientists used genetic engineering to suppress a specific gene in the fatty acid pathway of soybean seeds, resulting in increased levels of oleic acid and decreased levels of linoleic and linolenic acid in the seeds and oil. According to the company, extensive testing at both university and commercial pilot facilities has shown that the high-oleic soybean oil is at least 2–3 times as stable against oxidation as regular soybean oil and as stable as commonly used partially hydrogenated oils, while generating less objectionable flavor and odor during frying. It also has 20% less saturated fat than commodity soybean oil".

The on-going controversy regarding the green credentials of Palm oil which is being blamed for destruction of thousands of acres of forest land in Indonesia, Malaysia and Brazil, can be expected to increase demand for modified soy oil from the snack product industry. Global edible oil market is dominated by Palm oil, Coconut oil, Rapeseed oil and Soy oil. The relative proportion of market share is determined by the price factor with Palm oil producers consistently being able to outwit others and whether the new version of soy oil can face the competition remains to be seen. How far the new frying oil, being a product evolved by genetic tinkering, can gain acceptability depends on the safety clearance from the authorities who want to make sure that its wide scale use by the industry is safe beyond any shadow of doubt. One of the biggest advantages for the new oil is its ability to prevent generation of the undesirable fish odor under the high temperature frying conditions, conferring extended shelf life to products prepared using this oil. .

V.H.POTTY
http://vhpotty.blogspot.com/
http://foodtechupdates.blogspot.com