Nippon Eiyo Shokuryo Gakkaishi
Online ISSN : 1883-2849
Print ISSN : 0287-3516
ISSN-L : 0287-3516
Research Note
Inhibitory Effect of Bread Containing Powdered Morus australis Leaves on Postprandial Elevation of Blood Glucose
Daisuke KumeYing QiaoJuri NakayamaKiyoshi YasukawaYoshinori ShimajiriMasaaki Ito
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2021 Volume 74 Issue 1 Pages 15-20

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Abstract

The present study investigated the inhibitory effect of bread containing powdered Morus australis leaves on postprandial elevation of the blood glucose level. First, we assessed the 1-deoxynojirimycin (1-DNJ) content and α-amylase- and maltase-inhibitory activities of bread containing powdered M. australis leaves. Second, we investigated the inhibitory effect of this bread on blood glucose elevation in healthy individuals. Although the level of 1-DNJ was reduced during the bread-making process, 1-DNJ was still present in the bread containing powdered M. australis leaves. The powdered leaves exhibited no α-amylase-inhibitory activity. Although the median maltase-inhibitory concentration was higher in the bread containing the powdered leaves than in the powdered leaves alone, this bread retained its maltase-inhibitory activity. Moreover, consumption of the bread containing powdered M. australis leaves suppressed postprandial elevation of the blood glucose and insulin levels to a greater degree than consumption of bread without the powdered leaves. These findings demonstrate that bread containing powdered M. australis leaves has an inhibitory effect on postprandial blood glucose elevation.

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© 2021 Japan Society of Nutrition and Food Science
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