Effects of Selenium on Differentiation and Antioxidant Activity of Sclerotium of Penicillium thomii Q1 Strain.

Abstract:

:Selenium is an essential trace element, which has certain antioxidant properties. Na2SeO3 is toxic, and its use is limited. SeMet, as an organic selenium, is less toxic than Na2SeO3. In this experiment, different concentrations of Na2SeO3 and SeMet were added to MEA and PDA media to observe the effect of selenium on the sclerotium differentiation of Q1 strain, and the contents of carotenoids, ascorbic acid, and total phenol and their reducing power, DPPH free radical scavenging ability, ferrous ion chelating ability, and superoxide anion scavenging ability were determined. Meanwhile, the orthogonal design was used to optimize the selenium enrichment culture conditions of Q1. The results showed that the addition of selenium in the PDA medium was not conducive to the differentiation of Q1 strain. The addition of inorganic and organic selenium in the MEA medium at different concentrations resulted in the accumulation of carotenoids, ascorbic acid, phenols, and selenium in the sclerotia of Q1 strain, and the contents of carotenoids, ascorbic acids, and selenium in the sclerotia of Q1 strain were increased to different degrees, but it cannot increase the content of total phenol. In addition, when the concentration of Na2SeO3 and SeMet in the medium was 10 μg/mL, the reducing power of the extract was improved. The experimental results can provide a new research idea for the utilization and development of Penicillium sclerotium and selenium.

journal_name

Biomed Res Int

authors

Zhao W,Zhai F,Han J

doi

10.1155/2020/2368245

subject

Has Abstract

pub_date

2020-04-26 00:00:00

pages

2368245

eissn

2314-6133

issn

2314-6141

journal_volume

2020

pub_type

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