期刊
JOURNAL OF THE AMERICAN COLLEGE OF NUTRITION
卷 31, 期 4, 页码 280-287出版社
ROUTLEDGE JOURNALS, TAYLOR & FRANCIS LTD
DOI: 10.1080/07315724.2012.10720435
关键词
kefir; glycemia; insulinemia; satiety index
资金
- Lifeway Foods (Chicago, IL)
Objectives: To determine glycemic, insulinemic, and satiety indices of 3 types of kefir. Methods: This study was divided into 3 phases. In phase 1, 50 g of available carbohydrate from low-fat strawberry kefir or orange kefir was tested, and in phase 2, low-fat plain kefir containing 25 g of available carbohydrates was tested for glycemic index (GI), in both cases compared with an equivalent amount of glucose. In phase 3, 1000-KJ portions of all 3 types of kefirs were compared with white bread with the same energy content to determine the insulinemic index (II) and satiety index (SI) of all 3 kefirs. In all phases, a single-meal, randomized crossover design was performed in which the test meals were given to healthy adults, 5 men and 5 women. Results: The total incremental plasma glucose area under the curve (iAUC) for strawberry, orange, and plain kefirs was significantly lower compared with the respective high-GI control food, which was glucose solution. However, the Ifs and SIs of kefir did not differ significantly from the white bread. Conclusion: Kefir is a low- to moderate-GI food; however, its II was high. Although kefir had higher water content, the SI of kefir was not significantly different from white bread.
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