Glycaemic index of three Indian rice varieties.

摘要

Three commonly consumed Indian rice varieties (Sona Masuri, Ponni and Surti Kolam) were tested for their glycaemic index (GI). Healthy volunteers were recruited and, after an overnight fast, were given a 50 g available carbohydrate portion of glucose (reference food) or different varieties of cooked rice (test foods) on separate occasions. Fasting and postprandial capillary blood glucose responses were determined over 2 h, and the incremental area under the curve (IAUC) was calculated. The GI was calculated as the IAUC of the test food/IAUC of the reference food (glucose) x 100. The differences between the GI values for Sona Masuri (72.0 +or- 4.5), Ponni (70.2 +or- 3.6) and Surti Kolam (77.0 +or- 4.0) rice varieties were non-significant (p = 0.606), and all rice varieties were classified as high GI. There is an urgent need to study the GI of other commonly consumed rice varieties and to develop rice of a lower GI value.