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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VU Dai Long SAURAV Kumar MYLENKO Mykola RANGLOVA Karolina KUTA Jan EWE Daniela MASOJÍDEK Jiří HROUZEK Pavel

Rok publikování 2019
Druh Článek v odborném periodiku
Časopis / Zdroj Food Chemistry
Fakulta / Pracoviště MU

Přírodovědecká fakulta

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Doi http://dx.doi.org/10.1016/j.foodchem.2018.12.004
Klíčová slova Bioaccessibility; Selenoamino acids; Selenium enriched Chlorella vulgaris; Gas chromatography atmospheric pressure chemical ionization high resolution mass spectrometry (GC-APCI-HRMS); Selenized yeast
Popis 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 (similar to 49%) as compared to Se-yeast (similar to 21%), Se-supplement (similar to 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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