Effect of Ultraviolet C Irradiation on Isoflavone Concentrations in Different Cultivars of Soybean (Glycine max)

Phytoestrogens are naturally occurring plant polyphenolic compounds present in high concentrations in soybean products. Phytoestrogens are divided into three classes: lignans, isoflavones, and coumestans. Nine types of glycoside isoflavones and three types of aglycoside isoflavones are reported in s...

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Bibliographic Details
Published in:Plants (Basel) 2020-08, Vol.9 (8), p.1043
Main Authors: Karki, Krishna Bahadur, Mishra, Awdhesh Kumar, Choi, Seong-Jin, Baek, Kwang-Hyun
Format: Article
Language:English
Subjects:
Biomedical materials
Cultivars
Experimentation
Flavonoids
Glycine max
Glycosides
induction
Irradiation
isoflavone
Isoflavones
Legumes
Lignans
Liquid chromatography
Mass spectrometry
Mass spectroscopy
Menopause
Metabolites
Osteoporosis
phytoestrogen
Phytoestrogens
Polyphenols
Seeds
Soybeans
Ultraviolet radiation
UV-C
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Summary:Phytoestrogens are naturally occurring plant polyphenolic compounds present in high concentrations in soybean products. Phytoestrogens are divided into three classes: lignans, isoflavones, and coumestans. Nine types of glycoside isoflavones and three types of aglycoside isoflavones are reported in soybean. Soy isoflavones can reduce the risk of a certain type of cancer, cardiovascular problems, osteoporosis, and menopausal symptoms. We irradiated the leaves of five cultivars of soybean with UV-C (260 nm) and determined the effect on concentrations of isoflavone compounds using liquid chromatography–mass spectrometry (LC–MS). Isoflavone concentrations were significantly higher following irradiation, particularly in the cultivar Daepung, which was selected as the best cultivar for high isoflavone induction with UV-C irradiation. Further experimentation with the cultivar Daepung revealed that 20 min UV-C irradiation was the best treatment for the induction of aglycone compounds, and 5 min with the dorsal surface facing the UV-C irradiation source was the best treatment for the induction of glycoside isoflavone compounds.
ISSN:2223-7747
2223-7747
DOI:10.3390/plants9081043