In vitro bioaccessibility of selenoamino acids from selenium (Se)-enriched Chlorella vulgaris biomass in comparison to selenized yeast; a Se-enriched food supplement; and Se-rich foods.

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2019
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Abstract
Selenium (Se) is an indispensable microelement in our diet and health issues resulting from deficiencies are well documented. Se-containing food supplements are available on the market including Se-enriched Chlorella vulgaris (Se-Chlorella) which accumulates Se in the form of Se-amino acids (Se-AAs). Despite its popular uses, data about the bioaccessibility of Se-AAs from Se-Chlorella are completely missing. In the present study, gastrointestinal digestion times were optimized and the in vitro bioaccessibility of Se-AAs in Se-Chlorella, Se-yeast, a commercially available Se-enriched food supplement (Se-supplement) and Se rich foods (Se-foods) were compared. Higher bioaccessibility was found in Se-Chlorella (∼49%) as compared to Se-yeast (∼21%), Se-supplement (∼32%) and Se-foods. The methods used in production of Se-Chlorella biomass were also investigated. We found that disintegration increased bioaccessibility whereas the drying process had no effect. Similarly, temperature treatment by microwave oven also increased bioaccessibility whereas boiling water did not.
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Authors Vu, Dai Long;Saurav, Kumar;Mylenko, Mykola;Ranglová, Karolína;Kuta, Jan;Ewe, Daniela;Masojídek, Jiří;Hrouzek, Pavel;
Journal Food chemistry
Year 2019
DOI S0308-8146(18)32091-0
URL
Keywords
bioaccessibility gas chromatography atmospheric pressure chemical ionization high resolution mass spectrometry (gc-apci-hrms) methanesulfonic acid (pubchem cid: 6395) methylselenocysteine (pubchem cid: 147004) selenium enriched chlorella vulgaris selenium enriched food supplement selenium rich foods selenized yeast selenoamino acids selenocysteine (pubchem cid: 6326983) selenomethionine (pubchem cid: 15103)

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