Modulation of gut microbiota by rice starch enzymatically modified using amylosucrase from Deinococcus geothermalis
- Authors
- Song, Eun-Ji; Lee, Eun-Sook; So, Yun-Sang; Lee, Chang-Young; Nam, Young-Do; Lee, Byung-Hoo; Seo, Dong-Ho
- Issue Date
- Mar-2023
- Publisher
- KOREAN SOCIETY FOOD SCIENCE & TECHNOLOGY-KOSFOST
- Keywords
- Amylosucrase; Rice starch; Resistant starch; Gut microbiota; Deinococcus geothermalis
- Citation
- FOOD SCIENCE AND BIOTECHNOLOGY, v.32, no.4, pp.565 - 575
- Journal Title
- FOOD SCIENCE AND BIOTECHNOLOGY
- Volume
- 32
- Number
- 4
- Start Page
- 565
- End Page
- 575
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/87416
- DOI
- 10.1007/s10068-022-01238-1
- ISSN
- 1226-7708
- Abstract
- Amylosucrase can increase the amount of resistant starch (RS) in starch by transferring glucose from sucrose to amylopectin. Here, rice starch was modified using amylosucrase from Deinococcus geothermalis (DgAS). DgAS-modified rice starch (DMRS) increased the side-chain length of amylopectin and appeared in the form of B-type crystals. In vitro digestion analyses revealed that DMRS had a higher RS contents and lower digestion rate than native rice starch. When high-fat diet (HFD)-induced C57BL/6 mice were orally administered DMRS, body weight and white fat tissues of DMRS-fed HFD mice were not significantly different. However, serum leptin and glucose levels were significantly decreased and serum glucagon like peptide-1was increased in these mice. The cecal microbiome in DMRS-fed HFD mice was identified to investigate the role of DMRS in gut microbiota regulation. DMRS supplementation increased the relative abundance of Bacteroides, Faecalibaculum, and Ruminococcus in mouse gut microbiota.
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