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Article Publish Status: FREE
Abstract Title:

Optimized production and safety evaluation of hispidin-enrichedmycelia.

Abstract Source:

Food Sci Nutr. 2020 Apr ;8(4):1864-1873. Epub 2020 Mar 3. PMID: 32328252

Abstract Author(s):

I-Chen Li, Chang Cheng Chen, Sen-Je Sheu, I-Hsuan Huang, Chin-Chu Chen

Article Affiliation:

I-Chen Li

Abstract:

, also known as the sanghuang mushroom, is a medicinal mushroom that has been recognized as beneficial to health for more thousands of years. Among its diverse valuable secondary metabolites, the yellow-brown styrylpyrone pigment hispidin has garnered significant attention due to its various pharmacological effects. However, recently after detailed morphological and molecular phylogenetic studies, the correct scientific name of the true sanghuang strains was shown not to bebut. As the incorrect binomial namehas long been misleadingly referred, there is a need to evaluate the safety of. Moreover, the growing conditions can impact the secondary metabolite profile of the fungi. Hence, this study is the first to optimize hispidin production and to investigate the genotoxic and oral toxic effects of hispidin-enrichedmycelia. In order to induce the biosynthesis of hispidin, 15 different culture media consisting of five carbon sources, five nitrogen sources, and five initial pH conditions were screened. Glucose and yeast extract at an initial pH of 5 were found to be the most suitable carbon and nitrogen sources, respectively, for the optimal growth and production of hispidin. Moreover, the production of hispidin was 3 mg/g in a 20-ton bioreactor under optimal conditions. Furthermore, the ames test, in vitro chromosome aberration test, acute oral toxicity test, and bone marrow micronucleus test were used to detect toxicological properties of 3 mg/g hispidin-enrichedmycelia. In all tests, there was no statistically significant difference between the mycelia and the negative control. Based on the results obtained, the present study demonstrates that 3 mg/g hispidin-enrichedmycelia has a very low order of toxicity, which supports its safety for human consumption.

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