A transgressive brown rice mediates favourable glycaemic and insulin responses
A transgressive brown rice mediates favourable glycaemic and insulin responses
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DOI：
10.1002/jsfa.4395
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发表时间：
2011-08-30
影响因子：
4.1
通讯作者：
Ratnam, Wickneswari
中科院分区：
文献类型：
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作者：
Karupaiah, Tilakavati;Aik, Chuah Khun;Ratnam, Wickneswari
背景：我们评估了通过杂交培育的一种糙米变异体(BR)的血糖反应。受试者(n=9)摄入509碳水化合物当量的BR、白米(WR)和精米(PR)，在交叉设计中与50g葡萄糖参考(GLU)进行比较。测定0、15、45、60、90、120和180min的血糖和胰岛素，计算曲线下增量面积(IAUC)和血糖指数(GI)和胰岛素指数(II)。结果：无论直链淀粉含量如何，BR组和WR组的餐后血糖(GI：51vs79vs86)和胰岛素血症(II：39vs63vs68)最低。仅BR在血糖(P=0.012)、胰岛素(P=0.013)、糖化血红蛋白(Glu)(P=0.045)和糖化血红蛋白(INS)(P=0.031)方面与GLU有显著差异。血糖和胰岛素反应呈正相关(r=0.550，P<；0.001)。IAUC(Glu)和IAUCins的线性趋势表明，胰岛素的分泌增加与WR(r(2)=0.848)、PR(r(2)=0.302)和BR(r(2)=0.122)的升糖反应密切相关。结论：糙米的GI和II值最低，但这些优势随着抛光而消失。(C)2011年化学工业学会
BACKGROUND: We evaluated glycaemic response of a brown rice variant (BR) developed by cross-breeding. Subjects (n = 9) consumed 509 carbohydrate equivalents of BR, white rice (WR) and the polished brown rice (PR) in comparison to 50 g glucose reference (GLU) in a cross-over design. Plasma glucose and insulin at 0, 15, 45, 60, 90, 120 and 180 min were measured and incremental area under the curve (IAUC) and indices for glucose (GI) and insulin (II) calculated.RESULTS: BR compared to PR or WR produced the lowest postprandial glycaemia (GI: 51 vs 79 vs 86) and insulinaemia (II: 39 vs 63 vs 68) irrespective of amylose content (19 vs 23 vs 26.5%). Only BR was significantly different from GLU for both plasma glucose (P = 0.012) and insulin (P = 0.013) as well as IAUC(glu) (P = 0.045) and IAUC(ins) (P = 0.031). Glycaemic and insulinaemic responses correlated positively (r = 0.550, P < 0.001). Linear trends for IAUC(glu) and IAUCins indicated a greater secretion of insulin tied in with a greater glycaemic response for WR (r(2) = 0.848), moderate for PR (r(2) = 0.302) and weakest for BR (r(2) = 0.122).CONCLUSION: The brown rice variant had the lowest GI and II values but these advantages were lost with polishing. (C) 2011 Society of Chemical Industry