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发明公开
CN108165512A 一种产胞外多糖空间植物乳杆菌SS18-119及其在提高生物抗氧化活性中的应用 有权

一种产胞外多糖空间植物乳杆菌SS18-119及其在提高生物抗氧化活性中的应用
摘要：
本发明公开了一种产胞外多糖空间植物乳杆菌SS18‑119及其在提高生物抗氧化活性中的应用。本发明公开的空间植物乳杆菌SS18‑119在中国微生物菌种保藏管理委员会普通微生物中心的保藏编号为CGMCC No.15150。本发明对空间植物乳杆菌SS18‑119高产胞外多糖的发酵条件进行优化，从发酵液中提取的胞外多糖具有对DPPH清除能力、对超氧阴离子自由基(O2‑·)清除能力、对Fe2+螯合能力和对提供氢原子物质阻断过氧化物形成的总还原能力或总抗氧化能力；此外，该菌株还具有胃肠道逆环境耐受特性，为胞外多糖在提高生物抗氧化活性中的应用提供实践依据。本发明填补了空间食品微生物工程菌的研究空白。
摘要（英）：

The invention discloses exopolysaccharide production space lactobacillus plantarum SS18-119 and application thereof in improving biological antioxidation activity. The preservation number of the exopolysaccharide production space lactobacillus plantarum SS18-119 disclosed by the invention in the China General Microbiological Culture Collection Center is CGMCC No.15150. Fermentation conditions forhigh yield of exopolysaccharides with the space lactobacillus plantarum SS18-119 are optimized, and the exopolysaccharides extracted from fermentation broth have DPPH (Diphenyl-1-Picrylhydrazyl Free Radical) scavenging properties, superoxide anion free radical (O2<->.) scavenging properties, Fe<2+> chelation properties and total reduction or total antioxidation proerpties for hydrogen atom substances to interdict formation of peroxides; in addition, the strain has a gastrointestinal tract inverse environment resistance property, and practical evidences for application of exopolysaccharides inimproving biological antioxidation activity can be provided. By adopting the strain, the research blank of space food microorganism engineering bacteria can be made up.

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