Evaluation of Physicochemical Properties and Prebiotics Function of a Bioactive Pleurotus eryngii Aqueous Extract Powder Obtained by Spray Drying

Author:

Chen Jianqiu1ORCID,Zhou Mengling1,Chen Liding12,Yang Chengfeng3ORCID,Deng Yating1ORCID,Li Jiahuan12,Sun Shujing12ORCID

Affiliation:

1. College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China

2. Gutian Edible Fungi Research Institute, Fujian Agriculture and Forestry University, Ningde 352200, China

3. Sanya Institute, China Agricultural University, Sanya 572025, China

Abstract

A bioactive Pleurotus eryngii aqueous extract powder (SPAE) was obtained by spray drying and its performance in terms of physicochemical properties, in vitro digestion, inflammatory factors, and modulation of the intestinal microbiota was explored. The results indicated that the SPAE exhibited a more uniform particle size distribution than P. eryngii polysaccharide (PEP). Meanwhile, a typical absorption peak observed at 843 cm−1 in the SPAE FTIR spectra indicated the existence of α-glycosidic bonds. SPAE exhibited higher antioxidant abilities and superior resistance to digestion in vitro. In addition, SPAE supplementation to mice significantly reduced the release of factors that promote inflammation, enhanced the secretion of anti-inflammatory factors, and sustained maximum production of short-chain fatty acids (SCFAs). Additionally, it significantly enhanced the relative abundance of SCFAs-producing Akkermansia and reduced the abundance of Ruminococcus and Clostridiides in intestines of mice. These results show the potential of SPAE as a novel material with prebiotic effects for the food and pharmaceutical industries.

Funder

Modern Agricultural Industrial Technology System of Edible Fungi in Fujian Province

Publisher

MDPI AG

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