AUTHOR=Xia Yongjun , Meng Peng , Liu Shaodong , Tan Zhuoming , Yang Xi , Liang Lihong , Xie Fan , Zhang Hui , Wang Guangqiang , Xiong Zhiqiang , Lo Jenyu , Ai Lianzhong 

TITLE=Structural and Potential Functional Properties of Alkali-Extracted Dietary Fiber From Antrodia camphorata

JOURNAL=Frontiers in Microbiology

VOLUME=13

YEAR=2022

URL=https://www.frontiersin.org/journals/microbiology/articles/10.3389/fmicb.2022.921164

DOI=10.3389/fmicb.2022.921164

ISSN=1664-302X

ABSTRACT=<p><italic>Antrodia camphorata</italic> is rich in a variety of bioactive ingredients; however, the utilization efficiency of the residue of <italic>A. camphorata</italic> is low, resulting in serious waste. It is necessary to deeply study the functional components of <italic>A. camphorata</italic> residues to achieve high-value utilization. In this study, the components, structural characteristics, and functional properties of alkali-extracted dietary fiber extracted from residues of <italic>A. camphorata</italic> (basswood and dish cultured fruiting body, respectively) were investigated. There were similar components and structural characteristics of ACA-DK (extract from basswood cultured) and ACA-DF (extract from dish cultured). The two alkali-extracted dietary fiber were composed of mainly cellulose and xylan. However, ACA-DK has better adsorption capacities than ACA-DF on lipophilic substances such as oil (12.09 g/g), cholesterol (20.99 mg/g), and bile salts (69.68 mg/g). <italic>In vitro</italic> immunomodulatory assays stated that ACA-DK had a good effect on promoting the proliferation of RAW 264.7 cells and can activate cell phagocytosis, NO synthesis, and other immune capabilities. The edible fungus <italic>A. camphorata</italic> is a good source of functional dietary fiber. The alkali-extracted dietary fiber of <italic>A. camphorata</italic> might be used as a functional ingredient in the medicine and food industry.</p>