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加拿大學者研究表明,小扁豆能顯著降低血糖水平,預防2型糖尿病

2018-06-14 由 來寶科學 發表于健康

根據圭爾夫大學(University of Guelph)的首次研究,用脈衝代替土豆或大米可以將血糖水平降低20%以上。https://googleads.g.doubleclick.net/pagead/ads?client=ca-pub-2923152866385027&output=html&h=280&slotname=7278175363&adk=971666465&adf=678168136&pi=t.ma~as.7278175363&w=336&fwrn=4&lmt=1638024544&rafmt=11&psa=1&format=336×280&url=https%3A%2F%2Fkknews.cc%2Fhealth%2F3lpqlmg.html&flash=0&wgl=1&uach=WyJXaW5kb3dzIiwiMTAuMC4wIiwieDg2IiwiIiwiOTYuMC4xMDU0LjI5IixbXSxudWxsLG51bGwsIjY0Il0.&dt=1638024543548&bpp=7&bdt=653&idt=575&shv=r20211111&mjsv=m202111110101&ptt=9&saldr=aa&abxe=1&cookie=ID%3D8c9ab5748258899d-22d2592b7fcb004e%3AT%3D1634956501%3ART%3D1634956501%3AS%3DALNI_MYmHFjLbG7FXK5ZOF8DB7vakKHj-w&prev_fmts=0x0&nras=1&correlator=8697323239968&frm=20&pv=1&ga_vid=1845738707.1638024544&ga_sid=1638024544&ga_hid=2103728606&ga_fc=0&rplot=4&u_tz=-300&u_his=4&u_h=709&u_w=1260&u_ah=676&u_aw=1260&u_cd=24&dmc=4&adx=294&ady=755&biw=1244&bih=605&scr_x=0&scr_y=0&eid=44754332&oid=2&pvsid=1228167050889219&pem=949&tmod=1113870059&wsm=3&ref=https%3A%2F%2Fwww.google.ca%2F&eae=0&fc=1920&brdim=0%2C0%2C0%2C0%2C1260%2C0%2C1260%2C676%2C1260%2C605&vis=1&rsz=%7C%7CEebr%7C&abl=CS&pfx=0&fu=128&bc=31&ifi=2&uci=a!2&btvi=1&fsb=1&xpc=o7wjrHRzs7&p=https%3A//kknews.cc&dtd=588

人類健康和營養科學部門的Alison Duncan教授和加拿大農業和農業食品公司的Dan Ramdath發現,將這些澱粉類食物中的一半換成小扁豆可以顯著改善身體對碳水化合物的反應。

用扁豆替換半份米飯,可使血糖下降高達20%。用扁豆代替土豆會導致下降35%以上。

鄧肯說:「豆類是一種營養豐富的食物,有可能減少與管理錯誤的葡萄糖水平有關的慢性疾病。」

但她補充說,很少有加拿大人吃小扁豆。

鄧肯說:「加拿大的小扁豆產量很大,但我們出口了大部分小扁豆,只有13%的加拿大人每天吃小扁豆。」「我們希望這項研究能讓人們更了解吃豆類食品對健康的好處。」

發表在《營養學雜誌》(the Journal of Nutrition)上的一項研究發現,24名健康的成年人只吃4碟——白米、半白米和半大綠色小扁豆、半白米和半小綠扁豆、半白米和半裂紅扁豆。

研究人員在參與者進食前和進食後兩小時測量了他們血液中的葡萄糖水平。他們重複了單獨使用白土豆和同樣的土豆和小扁豆的過程。https://googleads.g.doubleclick.net/pagead/ads?client=ca-pub-2923152866385027&output=html&h=280&slotname=7278175363&adk=971666465&adf=650748198&pi=t.ma~as.7278175363&w=336&fwrn=4&lmt=1638024544&rafmt=11&psa=1&format=336×280&url=https%3A%2F%2Fkknews.cc%2Fhealth%2F3lpqlmg.html&flash=0&wgl=1&uach=WyJXaW5kb3dzIiwiMTAuMC4wIiwieDg2IiwiIiwiOTYuMC4xMDU0LjI5IixbXSxudWxsLG51bGwsIjY0Il0.&dt=1638024543555&bpp=1&bdt=660&idt=596&shv=r20211111&mjsv=m202111110101&ptt=9&saldr=aa&abxe=1&cookie=ID%3D8c9ab5748258899d-22d2592b7fcb004e%3AT%3D1634956501%3ART%3D1634956501%3AS%3DALNI_MYmHFjLbG7FXK5ZOF8DB7vakKHj-w&prev_fmts=0x0%2C336x280&nras=1&correlator=8697323239968&frm=20&pv=1&ga_vid=1845738707.1638024544&ga_sid=1638024544&ga_hid=2103728606&ga_fc=0&rplot=4&u_tz=-300&u_his=4&u_h=709&u_w=1260&u_ah=676&u_aw=1260&u_cd=24&dmc=4&adx=294&ady=1685&biw=1244&bih=605&scr_x=0&scr_y=0&eid=44754332&oid=2&pvsid=1228167050889219&pem=949&tmod=1113870059&wsm=3&ref=https%3A%2F%2Fwww.google.ca%2F&eae=0&fc=1920&brdim=0%2C0%2C0%2C0%2C1260%2C0%2C1260%2C676%2C1260%2C605&vis=1&rsz=%7C%7CEebr%7C&abl=CS&pfx=0&fu=128&bc=31&ifi=3&uci=a!3&btvi=2&fsb=1&xpc=v3QPxEUQd8&p=https%3A//kknews.cc&dtd=602

「我們把小扁豆和土豆和米飯混合在一起,因為人們通常自己不會單獨吃豆類,而是把它們與其他澱粉類食物一起作為大餐的一部分,所以我們希望結果能反映這一點。」

當三種小扁豆分別替換了一半的澱粉後,血糖降低了差不多的量。

血糖包括在上消化道消化過程中血液中發現的糖,取決於所吃食物的澱粉含量。

鄧肯說,像扁豆這樣的豆類可以減緩消化和澱粉中糖的釋放,最終降低血糖水平。

「這種緩慢的吸收意味著你不會經歷葡萄糖的激增。」一段時間內的高水平會導致血糖失控,這是2型糖尿病的標誌。基本上,吃小扁豆可以降低這種風險。

鄧肯補充說,豆類含有抑制葡萄糖吸收的酶的成分,這些食物中含有的纖維可以促進短鏈脂肪酸的產生,這也有助於降低血糖水平。

「健康加拿大」要求在批准一項關於降血糖的健康聲明之前,將血糖水平降低20%,鄧肯說。

「我們希望,為批准一項關於豆類的健康聲明提供證據,將進一步鼓勵人們在他們的配菜中添加豆類。

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