In:
International Journal for Vitamin and Nutrition Research, Hogrefe Publishing Group, Vol. 87, No. 5-6 ( 2017-09-01), p. 237-246
Kurzfassung:
Abstract. Mushrooms are a great source of vitamin D and vitamin B 2 ; however, the content of these vitamins in dried mushrooms has not fully been investigated. Thus, the objectives of this study were to determine the contents of vitamin D 2 , ergosterol, and vitamin B 2 in commercially dried edible mushrooms in China and to investigate the effect of UV-C irradiation on fresh mushrooms. Among the 35 species of dried mushrooms considered for this study, the average ergosterol content was 1.98 mg/g, while the average vitamin D 2 content was 16.88 µg/g. The average vitamin B 2 content in dried mushrooms was 12.68 µg/g. Fresh shaggy ink caps and oyster mushrooms, when exposed to UV-C at 254 nm at a dose of 0.25 J/cm 2 for 10, 30, and 60 min, showed significantly (p 〈 0.05) increased vitamin D2 content (229.7 and 67.0 µg/g, respectively) as compared to its fresh counterparts. The conversion of ergosterol to vitamin D 2 induced by UV-C irradiation at 0.25 J/cm 2 was significant (p 〈 0.05). In conclusion, dried commercial mushrooms have higher contents of ergosterol and vitamin D 2 than fresh mushrooms. UV-C radiation can be used to increase vitamin D 2 content in mushrooms.
Materialart:
Online-Ressource
ISSN:
0300-9831
,
1664-2821
DOI:
10.1024/0300-9831/a000294
Sprache:
Englisch
Verlag:
Hogrefe Publishing Group
Publikationsdatum:
2017
SSG:
15,3
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