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Title

Kinetic study of the antioxidant compounds and antioxidant capacity during germination of Vigna radiata cv. Emmerald, Glycine max cv. jutro and Glycine max cv. Merit

AuthorsFernández-Orozco, Rebeca ; Frías, Juana ; Zielinski, Henryk; Piskula, Mariusz K.; Kozlowska, Halina; Vidal-Valverde, Concepción
KeywordsMung bean
Soybean
Germination
Antioxidant capacity
Vitamin C
Vitamin E
Phenolic compounds
Reduced glutathione
Lipid peroxidation
Issue Date1-Dec-2008
PublisherElsevier
CitationFood Chemistry 111(3): 622–630 (2008)
AbstractThe purpose of this study was to determine the antioxidant capacity and the content of antioxidant compounds in raw mung bean seeds and sprouts (Vigna radiata cv. emmerald) germinated for 2, 3, 4, 5 and 7 days and of soybean seeds of Glycine max cv. jutro germinated for 2, 3 and 4 days and of Glycine max cv. merit germinated for 2, 3, 4, 5 and 6 days. Antioxidant compounds, such as vitamin C and E, total phenolic compounds and reduced glutathione (GSH) were studied. Antioxidant capacity was measured by superoxide dismutase-like activity (SOD-like activity), peroxyl radical-trapping capacity (PRTC), trolox equivalent antioxidant capacity (TEAC) and inhibition of lipid peroxidation in unilamellar liposomes of egg yolk phosphatidylcholine (PC). The results indicated that changes in the contents of vitamin C, vitamin E and GSH depended on the type of legume and germination conditions. Sprouts of mung bean and soybeans provided more total phenolic compounds than did raw seeds. The SOD-like activity increased after germination of mung bean seeds for 7 days, by 308%, while no change was observed in sprouts of Glycine max cv. jutro and an increase was observed after 5 and 6 days of germination ( 20%) in Glycine max cv. merit. PRTC and TEAC increased during the germination process and retentions of 28–70% and 11–14%, respectively, for soybean, and 248% and 61%, respectively, for mung bean were observed at the end of germination. The inhibition of lipid peroxidation increased by 389% in 5–7 days’ germination of Vigna radiata cv. emmerald sprouts, and 66% in Glycine max cv. merit sprouts whilst, in Glycine max cv. jutro, germination did not cause changes in lipid peroxidation inhibition. According to the results obtained in this study, germination of mung bean and soybean seeds is a good process for obtaining functional flours with greater antioxidant capacity and more antioxidant compounds than the raw legumes.
Publisher version (URL)http://dx.doi.org/10.1016/j.foodchem.2008.04.028
URIhttp://hdl.handle.net/10261/36979
DOI10.1016/j.foodchem.2008.04.028
ISSN0308-8146
Appears in Collections:(IFI) Artículos
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