[新聞] 食藥署掛保證:冷飯比熱飯熱量低消失
食藥署掛保證:冷飯比熱飯熱量低
蘋果日報(更新:新增配音影片)
很多愛美女性正餐不敢吃太多飯,擔心澱粉熱量會堆脂;
網路傳言稱,同樣是米飯,冷飯比熱飯的熱量還低。
衛福部食藥署證實, 米飯在加熱後冷卻的過程中,會提升抗性澱粉含量,
此為人體無法消化的澱粉,吃下肚有飽足感,但熱量確實比熱飯低。
食藥署說,抗性澱粉是一種不被小腸吸收、分解的澱粉,吃下冷飯進入大腸後,
會被腸內菌叢發酵成短鏈脂肪酸,功能類似膳食纖維。
雖具飽足感,但短鏈脂肪酸沒有熱量,因此從冷飯所攝取的熱量確實比熱飯還低。
三軍總醫院營養部主任戰臨茜表示,單就冷飯和熱飯的熱量比較,差異並不會太大,
不過白飯煮熟再經冰箱冷藏後,其澱粉會變性老化、口感變得不Q彈,冷飯雖變難吃,
但腸胃吸收速度也較慢,因此血糖不會快速上升,有利糖尿病控制,
但如果要吃冷飯減肥,效果不會太好。
高雄榮總教研部主任、減重醫師祝年豐指,東方人習慣吃熱飯,吃冷飯即便熱量較低,
也很少人會這樣吃,若要藉由不易消化、升糖速度慢來控制熱量攝取,
吃泰國米、五穀糙米的效果都比精緻白米還好。(蔡明樺/台北報導)
出版時間:18:01
更攳時間:19:51
http://www.appledaily.com.tw/realtimenews/article/life/20170531/1129932/
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