[Suppression of glucose absorption by various health teas in rats].
The inhibitory effects on the intestinal digestion and absorption of sugar of health teas that claim beneficial dietary and diabetes-controlling effects were compared in rats using portal cannulae. The measured durations were the times during which the elevation of portal glucose levels resulting from continuous intragastric infusion of sucrose or maltose was suppressed by concentrated teas. The teas investigated included salacia oblonga, mulberry, guava, gymunema, taheebo, yacon, and banaba. The duration of the inhibitory effect on the sucrose load of salacia oblonga, mulberry, and guava were 110 min, 20 min, and 10 min, respectively. In contrast, gymunema, taheebo, yacon, and banaba had no significant effect on the continuous infusion of sucrose. These results suggest that there is considerable difference in the efficacy of commercial health teas in influencing glucose absorption.
Matsuura
Toshiki
T
Department of Food Science and Nutrition, School of Human Environmental Sciences, Mukogawa Women's University, Nishinomiya, Japan. toshikim@mwu.mukogawa-u.ac.jp
Yoshikawa
Yukako
Y
Masui
Hironori
H
Sano
Mitsuaki
M
D000818:Animals; D001628:Beverages; D001786:Blood Glucose / Q000032:analysis; D005947:Glucose / Q000378:metabolism*; D007408:Intestinal Absorption; D008297:Male; D011169:Portal Vein; D051381:Rats; D017207:Rats, Sprague-Dawley
D001786:Blood Glucose; D005947:Glucose