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Abstract
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. The fasting as well as postprandial capillary blood glucose response was 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) × 100. The differences between the GI values for Sona Masuri (72.0 ± 4.5), Ponni (70.2 ± 3.6) and Surti Kolam (77.0 ± 4.0) rice varieties were non-significant (p = 0.606) and are all classified as high GI varieties of rice. There is an urgent need to study the GI of other commonly consumed rice varieties and to develop rice of a lower GI value.
Declaration of interest: We thank the volunteers who participated in this study for GI testing. The authors thank M/S Marico Limited, Mumbai, India for sponsoring the study and particularly wish to thank Mr Anand and Mrs Ankita for their interest and support to this project. V.M., V.S. and C.J.K.H. designed the study. K.A., L.N., M.R.B. led the data collection. S.S. wrote the first draft of the manuscript. Su.S. analyzed the data and wrote the statistical analysis. V.S., N.G.M., C.J.K.H. R.M.A. and V.M. reviewed the manuscript and contributed to the interpretation of data. All authors contributed to the revision and finalization of the manuscript. All authors declare that they have no duality of interest associated with this manuscript.