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Oh JH, Chung JO, Lee CY, Yun Y, Park MY, Hong YD, Kim WG, Cha HY, Shin KS, Hong GP, Shim SM. Characterized Polysaccharides from Green Tea Inhibited Starch Hydrolysis and Glucose Intestinal Uptake by Inducing Microstructural Changes of Wheat Starch. J Agric Food Chem 2021; 69:14075-14085. [PMID: 34784711 DOI: 10.1021/acs.jafc.1c04274] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The purpose of the current study was to investigate the effect of green tea ethanol extract (GTE) and polysaccharide fractions from green tea (PFGs) on the hydrolysis of wheat starch, microstructural changes, and intestinal transport of glucose. The amount of resistant starch (RS) was significantly lowered in the water-soluble polysaccharide (WSP), water-soluble polysaccharide-pectinase (WSP-P), and water-insoluble polysaccharide-alkali soluble (WISP-Alk-Soluble; p < 0.05). The microstructures of gelatinized wheat starch granules with WSP, WSP-P, and WISP-Alk-Soluble were spherical with small cracks. The amount of intestinal transported glucose from digested wheat starch was 2.12-3.50 times lower than the control group. The results from the current study suggest that water- and alkali-soluble PFGs could be potential ingredients to lower starch hydrolysis as well as to control the postprandial blood glucose level when foods that contain starch are consumed.
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Affiliation(s)
- Jeong-Ho Oh
- Department of Food Science and Biotechnology, Sejong University, 98 Gunja-dong, Seoul 143-747, South Korea
| | - Jin-Oh Chung
- AMOREPACIFIC R&D Center, 1920, Yonggu-daero, Giheung-gu, Yongin-si, Gyeonggi-do 17074, Republic of Korea
| | - Chan-Yang Lee
- Department of Food Science and Biotechnology, Sejong University, 98 Gunja-dong, Seoul 143-747, South Korea
| | - Youngchan Yun
- Department of Food Science and Biotechnology, Sejong University, 98 Gunja-dong, Seoul 143-747, South Korea
| | - Mi-Young Park
- AMOREPACIFIC R&D Center, 1920, Yonggu-daero, Giheung-gu, Yongin-si, Gyeonggi-do 17074, Republic of Korea
| | - Yong-Deog Hong
- AMOREPACIFIC R&D Center, 1920, Yonggu-daero, Giheung-gu, Yongin-si, Gyeonggi-do 17074, Republic of Korea
| | - Wan-Gi Kim
- AMOREPACIFIC R&D Center, 1920, Yonggu-daero, Giheung-gu, Yongin-si, Gyeonggi-do 17074, Republic of Korea
| | - Ha-Young Cha
- Department of Food Science and Biotechnology, Kyonggi University, 154-42 Gwanggyosan-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do 16227, Republic of Korea
| | - Kwang-Soon Shin
- Department of Food Science and Biotechnology, Kyonggi University, 154-42 Gwanggyosan-ro, Yeongtong-gu, Suwon-si, Gyeonggi-do 16227, Republic of Korea
| | - Geun-Pyo Hong
- Department of Food Science and Biotechnology, Sejong University, 98 Gunja-dong, Seoul 143-747, South Korea
| | - Soon-Mi Shim
- Department of Food Science and Biotechnology, Sejong University, 98 Gunja-dong, Seoul 143-747, South Korea
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