Study serves up healthy choice of rice
Rice consumers concerned about reports that rice is linked to diabetes can rest assured that rice can be part of a healthy diet, with scientists finding that the glycemic index (GI) of rice varies a lot from one type of rice to another, with most varieties scoring a low to medium GI.
The findings of the research, which analyzed 235 types of rice from around the world, is good news because it not only means rice can be part of a healthy diet for the average consumer, but it also means people with diabetes, or at risk of diabetes, can select the right rice to help maintain a healthy, low-GI diet.
The study found that the GI of rice ranges from a low of 48 to a high of 92, with an average of 64.
The research team from the International Rice Research Institute (IRRI) and Australia’s Commonwealth Scientific and Industrial Research Organisation (CSIRO) Food Futures Flagship also identified the key gene that determines the GI of rice, an important achievement that offers rice breeders the opportunity to develop varieties with different GI levels to meet consumer needs. Future development of low-GI rice would also enable food manufacturers to develop new, low-GI food products based on rice. Dr. Melissa Fitzgerald, who led the IRRI team, said that GI is a measure of the relative ability of carbohydrates in foods to raise blood sugar levels after eating.
“Understanding that different types of rice have different GI values allows rice consumers to make informed choices about the sort of rice they want to eat,” she said. “Rice varieties such as India’s most widely grown rice variety, Swarna, have a low GI and varieties such as Doongara from Australia and Basmati have a medium GI.”
Dr. Tony Bird, CSIRO Food Futures Flagship researcher, said that low-GI diets offer a range of health benefits: “Low-GI diets can reduce the likelihood of developing type 2 diabetes, and are also useful for helping diabetics better manage their condition.
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