期刊
FRONTIERS IN NUTRITION
卷 9, 期 -, 页码 -出版社
FRONTIERS MEDIA SA
DOI: 10.3389/fnut.2022.762595
关键词
Laminaria japonica; polysaccharide; structural characteristics; bioactivity; 3D structure analysis
资金
- National Key R&D Program of China-Korea Cooperative Project [2019YFE0107700, NRF-2019K1A3A1A20081146]
- National Research Foundation Grant of Korea [NRF-2017R1D1A3B03031665, NRF-2020R1A2C2004144]
- Basic Science Research Program through the NRF
- Ministry of Education [NRF-2021R1A6A3A13046827]
- Major Application Technology Innovation Projects [SD2019XM001]
- Forage Industrial Innovation Team Project [SDAIT-23-05]
- Excellent Seed Project of China [LZ201712080160, 2019LZGC012]
- National Research Foundation of Korea [2019K1A3A1A20081146] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
This study investigated the structural characteristics and bioactivities of a novel long-chain LJPS derived from Laminaria japonica. The LJPS was found to consist of various monomer residues and was a multi-branched, long-chain macromolecule with highly branched and helix domains. The LJPS exhibited no toxicity to mouse macrophage cells and showed biphasic immuno-modulating capacity.
Polysaccharides derived from Laminaria japonica (LJPS) have shown a variety of beneficial effects on improving human health; however, the structural features and bioactivities of long-chain LJPS remain unclear. This study aimed to investigate the structural characteristics and bioactivities of a novel long-chain LJPS. Results showed that the LJPS was composed of Fuc, Rha, Ara, Gal, Glc, Xyl, Man, Fru, Rib, GalA, GluA, GlcA, and ManA, with a molar ratio of 35.71:1.48:0.28:13.16:0.55:2.97:6.92:0.58:0.41:0.14:3.16:15.84:18.79. Of these, Fuc, Gal, Man, GlcA, and ManA were the predominant components with an accumulated proportion of 93.6%. The LJPS was found to consist of seven types of the monomer residues, and the main interchain glycosidic linkages were beta -D-(1 -> 2), alpha -D-(1 -> 3), (1 -> 4), and (1 -> 6), and the molecular mass was 5.79 x 10(4) g/mol. Regarding the molecular conformation, LJPS was a multi-branched, long-chain macromolecule, and appeared in a denser crosslinking network with highly branched and helix domains in the terms of morphology. Additionally, the LJPS had no toxicity to mouse macrophage cells and exhibited biphasic immuno-modulating capacity. The present findings suggested that the long-chain LJPS might be an attractive candidate as an immunopotentiating and anti-inflammatory functional food, and this study also provides a feasible approach to decipher the structural characteristics and spatial conformations of plant-derived polysaccharides.
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