Abstract: In order to investigate the effect of co-ingestion of 5 vegetables, including pakchoi, cauliflower, eggplant, green bean and wax gourd, on acute glycemic response to rice meals, the postprandial blood glucose level within 4 h were measured in 21 healthy subjects after consuming a mixed meal of 300 g each of above vegetables and rice. The results showed that the glycemic scores of vegetable-rice mixed meal within 1 h were 46.26%, 63.17%, 45.94%, 45.49% and 54.47% for cauliflower and rice meal (C+R), wax gourd and rice meal (W+R), pakchoi and rice meal (P+R), eggplant and rice meal (E+R) and green bean and rice meal (B+R) when taking rice meal (R) as the reference. Compared with R, P+R meal elicited the significantly lower peak value and the maximum amplitude glycemic expedition within 4 h (MAGE240) (P < 0.05). For all vegetable-rice meals except for W+R, the areas under glycemic response curve calculated on per gram of available carbohydrate (iAUCCHO) in the first 1, 2 and 3 hours were significantly lower than that of R (P < 0.05). The intake time was negatively correlated with iAUC, peak value and MAGE240. In conclusion, incorporating 300 g vegetables into rice meals, especially pakchoi, cauliflower and eggplant, could decrease intake time and attenuate glycemic response.

Key words: vegetables, mixed meal, postprandial glycemic response, eating time