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Magic Beans — Anti-obesity soya could help prevent diabetes
February 26, 2007A diet rich in black soya beans could help control weight, lower fat and cholesterol levels, and aid in the prevention of diabetes, reports Lisa Richards in Chemistry & Industry, the magazine of the SCI.
Yellow soya has already been hailed for its cholesterol lowering capabilities; this is one of the reasons why frozen food manufacturer Birds Eye has added the beans to its range. However, a team of Korean researchers has shown that black soya may be even more potent in rats, and also prevents weight gain (Journal of the Science of Food and Agriculture, February 2007 DOI: 10.1002/jsfa2808).
The researchers, led by Shin Joung Rho at Hanyang University, Seoul, allowed 32 rats to gorge on a fatty diet, supplemented with various levels of black soya. The results showed that, after two weeks, those getting 10% of their energy from black soya had gained half as much weight as those in the control group. Total blood cholesterol fell by 25% and LDL (so-called 'bad') cholesterol fell by 60% in the rats in the 10% group.
David Bender, sub-dean at the Royal Free and University College Medical School, London, thinks that the soya protein may be having an effect on fat metabolism in the liver and adipose tissue, reducing synthesis of new fatty acids and cholesterol. It is this metabolic effect that may explain the traditional Asian use of black soya in the treatment of diabetes. 'The key problem in type II diabetes is impairment of insulin action, mainly as a result of excess abdominal adipose tissue-so loss of weight often improves glycaemic control,' says Dr Bender.
Lynne Garton, a registered dietician and nutritionist and consultant to the Soya Protein Association, said: "Soy fits in well to a healthy balanced diet which is important in preventing diabetes - low in fat, high in fibre and a good source of complex carbohydrates."
Society of Chemical Industry
David Bender, sub-dean at the Royal Free and University College Medical School, London, thinks that the soya protein may be having an effect on fat metabolism in the liver and adipose tissue, reducing synthesis of new fatty acids and cholesterol. It is this metabolic effect that may explain the traditional Asian use of black soya in the treatment of diabetes. 'The key problem in type II diabetes is impairment of insulin action, mainly as a result of excess abdominal adipose tissue-so loss of weight often improves glycaemic control,' says Dr Bender.
Lynne Garton, a registered dietician and nutritionist and consultant to the Soya Protein Association, said: "Soy fits in well to a healthy balanced diet which is important in preventing diabetes - low in fat, high in fibre and a good source of complex carbohydrates."
Society of Chemical Industry
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A new study in SCI's Journal of the Science of Food and Agriculture shows that konjac gum and sesame seed extract may offer protection against different strains of E. coli and Salmonella bacteria.
Indigenous peoples hardest hit by climate change describe impacts
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Researchers & bakers combine to plug mineral gap in UK soil linked to fertility & cancer
A consortium of researchers, farmers and a major baker are working together to fill future supermarket shelves with loaves of bread that will arrest the plummeting levels in the UK diet of a mineral that plays a significant role in male fertility and the prevention of some cancers.
Ecologists warn of the dangers of GM fish
The aquaculture industry will do increasing ecological damage around the world unless urgent action is taken by national and international policy makers, a new report by the British Ecological Society has warned. The report - written by experts from University College Cork, the University of Glasgow, Germany and Sri Lanka - argues that while attention is being paid to the sustainability of capture fisheries in the North Sea, the Atlantic and elsewhere, the aquaculture industry is also becoming ecologically unsustainable. According to the report, Aquaculture: the ecological issues: "Aquaculture was originally regarded as a benign activity. Three decades ago, images of 'farming the seas' w
International Effort to Unearth the Secrets of the Soils
London/Nairobi, 28 November 2002 - Scientists are to go below ground in seven tropical countries to search for the largest source of untapped life left on Earth. Experts know that, millimetres below the surface in the twilight, subterranean world, of the earthworm and the nematode, tens of thousands of new species of tiny organisms including bacteria, fungi, insects, mites and worms await discovery. Scientists are also convinced that unraveling the secrets of how they operate may be the key to restoring the fertility of damaged and degraded lands while helping to raise crop yields in the tropics without the need for heavy pesticide and fertilizer use. Klaus Toepfer, Executive Director of the
Researchers Reveal Soya's Effects On Breast Tissue
Eating a diet rich in soya products such as tofu can affect the make-up of breast tissue, potentially reducing the risk of breast cancer, according to a new study* from Cancer Research UK. Scientists have previously suggested that soya intake might contribute to the low rates of breast cancer in countries like China and Japan but research has proved inconclusive. However, the new findings from a collaborative study involving scientists from the National University of Singapore, Cancer Research UK and the US National Cancer Institute add weight to the theory and point to a possible mechanism for this protective effect. The researchers combined data from two studies of women living in Singap
First direct evidence that environmental oestrogens affect sperm fertility
Researchers have found the first evidence that oestrogens from the environment, and also ones that occur naturally in our bodies, significantly affect the fertilising ability of sperm. Prof Lynn Fraser told the annual conference of the European Society of Human Reproduction and Embryology in Vienna today (Tuesday 2 July) that environmental oestrogens appeared to have a far greater impact on a sperm's ability to function than natural oestrogens. Although the environmental oestrogens were normally 1,000 times less biologically potent than the natural oestrogens, they could be 100 times more potent in sperm. This suggested that they might operate in a different way to naturally occurring oestro
Repel the aphids and you attract the leafhoppers
Things don`t always turn out as you expect when you play with genes AN ATTEMPT to make potato plants resistant to sap-sucking insects has highlighted the unpredictability of genetic engineering. The modified plants unexpectedly turned out to be vulnerable to other kinds of insect pests, demonstrating how important it is to assess each transgenic crop individually. Crops such as maize and cotton have already been made resistant to chewing insects by adding a gene for the bacterial toxin Bt. But Bt doesn`t deter sap-suckers like aphids, so genetic engineers are looking at other natural substances to keep insects at bay, such as the lectin prot
Report calls for huge changes to Kosovan farming industry to ensure economic stability and lasting peace
THE Kosovan farming industry must undergo huge changes if attempts to rebuild it are successful, according to a report by Newcastle University.
Genetically modified food: yes or no?
Genetically modified foods have been entering British supermarkets over this last year. The outcome has been mixed: some have been accepted without hesitation by the public - for example, 'vegetarian cheese' and the puree made from genetically modified tomatoes. But others, notably the flour from genetically modified soya beans, have caused considerable controversy. Why is this? After all, products like insulin, interferon and growth hormone - all made in bacteria or in animal cells by genetic modification - have been accepted by the consumer without question. If it's OK to use genetic modification for medicine then why not to produce more food?
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