Isolation and identification of polysaccharides from Pythium arrhenomanes and application to strawberry fruit (Fragaria ananassa Duch.) preservation. (30th March 2020)

• Record Type: Journal Article
• Authors: Yuan, Zhixiang; Shi, Yuqi; Cai, Fuhong; Zhao, Jieru; Xiong, Qingping; Wang, Yunpeng; Wang, Xiaoli; Zheng, Yonghua
• Is Part Of: Food chemistry. Volume 309(2020)
• Publication Date: 2020-03-30
• Subjects: Pythium arrhenomanes -- Exopolysaccharides -- Structural analysis -- Strawberry -- Postharvest quality; Food -- Analysis -- Periodicals; Food -- Composition -- Periodicals; 664
• DOI: 10.1016/j.foodchem.2019.125604
• Languages: English
• ISSNs: 0308-8146

Abstract

Graphical abstracts: Highlights: Polysaccharides from Pythium arrhenomanes was applicated to the strawberry preservation. Strawberries coated with the polysaccharide showed a significant delay in decay index. This polysaccharide may be exploitable to improve the shelf-life of strawberries. Abstract: In this study, we extracted exopolysaccharides from Pythium arrhenomanes and purified them to obtain three polysaccharides (PEPS-1, PEPS-2, PEPS-3). The composition of these polysaccharides was determined. PEPS-2 and PEPS-3 showed outstanding antioxidant activities. PEPS-2 was chosen as a polysaccharide-based coating for strawberry fruit, and its effects on postharvest preservation of the fruit were determined. Strawberries coated with PEPS-2 exhibited significant delay in decay index and lower malondialdehyde, higher soluble solids content, anthocyanin content and vitamin C content, and greater DPPH radical-scavenging activity than uncoated control fruit. The developed method could be beneficial for improving the shelf-life of strawberries.