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Physiochemical, rheological, microstructural, and antioxidant properties of yogurt using monk fruit extract as a
Qingfeng Ban1, Zonghao Liu2, Chongwei Yu2
1College of Food Science, Northeast Agricultural University, Harbin, 150030, China; Key Laboratory of Dairy Science of Ministry of Education, Northeast Agricultural University, Harbin 150030, China.
Abstract:
A yogurt using monk fruit extract (MFE) as a sweetener was developed. The aim of the study was to investigate the viability of using MFE to develop sweetened yogurts without the calories of added sugar. The physiochemical, rheological, microstructural, and antioxidant properties of yogurt were studied. Rheological results showed that MFE affected the yogurt fermentation process and its rheological properties. Yogurt sweetened with MFE had similar microstructural properties to yogurt sweetened with sucrose. Yogurt with MFE showed higher levels of gly-pro-p-nitroanilide and dipeptidyl peptidase IV inhibitory activities, 1,1-diphenyl-2-picrylhydrazyl radical scavenging capacity, α-glucosidase inhibitory activities, and superoxide anion radical scavenging ability compared with other yogurt samples. Results indicated that MFE could be a novel sweetener and a food antioxidant for functional yogurt and related products.
