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Three-phase partitioning for the direct extraction and separation of bioactive exopolysaccharides from the cultured broth of Phellinus baumii

文献类型: 外文期刊

作者: Wang, Yao-Yao 1 ; Ma, Haile 1 ; Ding, Zhi-Chao 1 ; Yang, Yan 2 ; Wang, Wen-Han 2 ; Zhang, He-Nan 2 ; Yan, Jing-Kun 1 ;

作者机构: 1.Jiangsu Univ, Sch Food & Biol Engn, Zhenjiang 212013, Peoples R China

2.Minist Agr, Key Lab Edible Fungi Resources & Utilizat South, Natl Engn Res Ctr Edible Fungi, Beijing, Peoples R China

3.Shanghai Acad Agr Sci, Inst Edible Fungi, Shanghai 201403, Peoples R China

关键词: Phellinus baumii; Exopolysaccharide; Three-phase partitioning

期刊名称:INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES ( 影响因子:6.953; 五年影响因子:6.737 )

ISSN: 0141-8130

年卷期: 2019 年 123 卷

页码:

收录情况: SCI

摘要: In this study, three-phase partitioning (TPP) was used to directly extract and separate bioactive exopolysaccharides (EPSs) from a cultured broth of Phellinus baumii. The maximum extraction yield of EPS was 52.09% under the following optimal conditions: 20% (w/v) ammonium sulfate concentration, 1.0:1.5 (v/v) ratio of cultured broth to t-butanol, 30 min, and 35 degrees C. A multifrequency power ultrasound in a sequential mode coupled with TPP resulted in similar to 9.12% increment in extraction yield and similar to 80% reduction in extraction time compared with those of traditional TPP. The carbohydrate (88.21%) and uronic acid (3.37%) contents of partially purified EPS were higher than those of EPS-C obtained through conventional ethanol precipitation and separation methods. EPS and EPS-C exhibited similar preliminary structural characteristics and different monosaccharide compositions and molecular weights. The radical-scavenging abilities, antioxidant capacities, alpha-amylase and alpha-glycosidase inhibitory activities, and macrophage stimulation activities of EPS were also higher than those of EPS-C. Therefore, it could be concluded that TPP as a simple and green separation technique could be used to directly extract and separate bioactive EPS from the fermentation broths of mushrooms and other fungi. (C) 2018 Published by Elsevier B.V.

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