Zobrazeno 1 - 10
of 86
pro vyhledávání: '"Yuya Kumagai"'
Autor:
Ryuya Yamamoto, Koki Takizawa, Yoshikatsu Miyabe, Martin Alain Mune Mune, Hideki Kishimura, Yuya Kumagai
Publikováno v:
Phycology, Vol 3, Iss 3, Pp 394-404 (2023)
Mycosporine-like amino acids (MAAs) are natural UV-absorbing compounds found in microalgae and macroalgae. The content of MAAs in algae varies with the seasons and environmental factors. Red alga dulse in Usujiri (Hokkaido, Japan) is an underutilized
Externí odkaz:
https://doaj.org/article/809dfc4425fe4841a659fa834dcd3a8e
Publikováno v:
Phycology, Vol 3, Iss 1, Pp 127-137 (2023)
Mycosporine-like amino acids (MAAs) are natural ultraviolet-absorbing compounds found in microalgae and macroalgae. MAA content changes seasonally and in response to environmental factors. We previously investigated MAAs from the red alga dulse (Deva
Externí odkaz:
https://doaj.org/article/b2d3c09cbc7c4ffabfb06dee1ea4509e
Publikováno v:
Molecules, Vol 29, Iss 7, p 1536 (2024)
In this study, the α-glucosidase (maltase-glucoamylase: MGAM) and α-amylase inhibitory properties elicited by xylooligosaccharides (XOSs) prepared from dulse xylan were analysed as a potential mechanism to control postprandial hyperglycaemia for ty
Externí odkaz:
https://doaj.org/article/6259a308120c453c93c31524a8a4f443
Publikováno v:
Frontiers in Bioengineering and Biotechnology, Vol 10 (2022)
Externí odkaz:
https://doaj.org/article/a783e31a9c95429289f399ab344d229f
Autor:
Jin-Seok Park, Ji-Min Han, Yu-Na Shin, Ye-Seul Park, Ye-Ryeon Shin, Sin-Won Park, Vikash Chandra Roy, Hee-Jeong Lee, Yuya Kumagai, Hideki Kishimura, Byung-Soo Chun
Publikováno v:
Marine Drugs, Vol 21, Iss 6, p 328 (2023)
In this study, we characterized the bioactive properties of three important brown seaweed species, Sargassum thunbergii, Undaria pinnatifida, and Saccharina japonica, by subcritical water extraction (SWE), as these species are well known for their be
Externí odkaz:
https://doaj.org/article/00adcdfeb64442f3a4cef88f67717a88
Autor:
Yuki Fujii, Manami Kobayashi, Yoshikatsu Miyabe, Hideki Kishimura, Tadashi Hatanaka, Yuya Kumagai
Publikováno v:
Bioresources and Bioprocessing, Vol 8, Iss 1, Pp 1-10 (2021)
Abstract Red alga dulse contains xylan with β(1→3)/β(1→4) linkages. We previously prepared xylooligosaccharides (XOSs) from dulse xylan; however, the product contained many d-xylose residues and fewer XOSs with β(1→3) linkages. To improve th
Externí odkaz:
https://doaj.org/article/5a9c75cce0bd4fa1a91ae43860e1d095
Autor:
Martin Alain Mune Mune, Yoshikatsu Miyabe, Takeshi Shimizu, Wataru Matsui, Yuya Kumagai, Hideki Kishimura
Publikováno v:
Marine Drugs, Vol 21, Iss 1, p 49 (2023)
In this study, we studied the bioactive peptides produced by thermolysin hydrolysis of a water-soluble protein (WSP) from the red alga Gracilariopsis chorda, whose major components are phycobiliproteins and Ribulose-1,5-bisphosphate carboxylase-oxyge
Externí odkaz:
https://doaj.org/article/4ed7cf7c84bf41c687b6b070354528c4
Publikováno v:
Marine Drugs, Vol 20, Iss 3, p 184 (2022)
We recently demonstrated the monthly variation and antioxidant activity of mycosporine-like amino acids (MAAs) from red alga dulse in Japan. The antioxidant activity of MAAs in acidic conditions was low compared to that in neutral and alkali conditio
Externí odkaz:
https://doaj.org/article/479f3c2da75d400aa141c54a3f18f129
Autor:
Yuya Kumagai, Hideki Kishimura, Weeranuch Lang, Takayoshi Tagami, Masayuki Okuyama, Atsuo Kimura
Publikováno v:
Marine Drugs, Vol 20, Iss 4, p 250 (2022)
The glycoside hydrolase family 17 β-1,3-glucanase of Vibrio vulnificus (VvGH17) has two unknown regions in the N- and C-termini. Here, we characterized these domains by preparing mutant enzymes. VvGH17 demonstrated hydrolytic activity of β-(1→3)-
Externí odkaz:
https://doaj.org/article/5d12273d3e464d39b8b0776410a1443a
Autor:
Yukiho Sasaoka, Taichi Takagi, Shunta Michiba, Yohei Yamamoto, Yuya Kumagai, Hideki Kishimura
Publikováno v:
Marine Drugs, Vol 19, Iss 10, p 584 (2021)
In a previous study, we found that the collagen peptides prepared from the by-products of Bester sturgeon had an inhibitory effect on elevated blood glucose levels in a glucose tolerance test with ICR mice. In the present study, we examine the mechan
Externí odkaz:
https://doaj.org/article/e0dfad716bbe4880b93bf93cf6a70560