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Issue 8, 2018
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In vitro bioaccessibility and speciation changes of selenium in Pleurotus eryngii during the growing stage

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Abstract

The production of Pleurotus eryngii by selenium (Se) biofortification is an effective way to improve the demand for Se in humans. In order to investigate the Se bioaccessibility and speciation of Se-enriched P. eryngii during the growing stage, the Se distribution in biochemical fractions, and the molecular weight and the Se species of Se-containing compounds derived from in vitro simulated gastrointestinal fluids were analyzed by size exclusion and anion exchange-high performance liquid chromatography and inductively coupled plasma mass spectrometry. The results showed that albumin had the highest Se content among biochemical fractions, approximately 34.40% of total Se, followed by glutelin, globulin and gliadins. Selenomethionine that was proved to be the major Se species would increase with P. eryngii growing from 45.85% to 59.32%, while selenocysteine would decrease from 40.68% to 15.17% of total Se. In conclusion, selenocysteine would gradually convert to selenomethionine, and thus the bioaccessibility of Se was greater in mature P. eryngii than in younger mushrooms.

Graphical abstract: In vitro bioaccessibility and speciation changes of selenium in Pleurotus eryngii during the growing stage

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Publication details

The article was received on 25 Mar 2018, accepted on 18 Jul 2018 and first published on 31 Jul 2018


Article type: Paper
DOI: 10.1039/C8FO00566D
Citation: Food Funct., 2018,9, 4493-4499

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    In vitro bioaccessibility and speciation changes of selenium in Pleurotus eryngii during the growing stage

    Y. Fang, Y. Zhang, M. Wang, F. Pei, M. Xie, P. Li and Q. Hu, Food Funct., 2018, 9, 4493
    DOI: 10.1039/C8FO00566D

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