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Effect of UV-A Irradiation on Ascorbic Acid Content in Soybean Sprout(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:
2015年03期
Page:
420-426
Research Field:
Publishing date:

Info

Title:
Effect of UV-A Irradiation on Ascorbic Acid Content in Soybean Sprout
Author(s):
WEI Sheng-jun GENG Dian-xiangWU Qi ZHANG Xiao-yan SU Na-na CUI Jin
College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China
Keywords:
Soybean sprout UV-A Ascorbic acid DHARGR
PACS:
-
DOI:
10.11861/j.issn.1000-9841.2015.03.0420
Abstract:
Effects of light quality on the growth and ascorbic acid content of soybean sprouts were studied in this article.Dark treatment was used as the control, and white, red, blue, yellow, UV-A and UV-B irradiation were used as different treatments. The results showed that compared with the dark, light reduced the hypocotyl length of soybean sprouts except white light, and more importantly the content of ascorbic acid were significantly improved both in hypocotyl and cotyledon of soybean sprouts.Compared with other light qualities, the most striking increase in contents of ascorbic acid in hypocotyl and cotyledon of soybean sprouts were happened after continuous UV-A illumination for 36 h. Further study was emphasized on the regulation mechanism of UV-A about how it could significantly raise the content of ASA, the results indicate that, after UV-A 36 h continuous illumination, the content of GSH in cotyledon, the enzymes activities of DHAR and GR and their gene relative expression in hypocotyl and cotyledon were notability improved in contrast to the control.To sum up, light is conductive to the accumulation of ascorbic acid in soybean sprouts; and UV-A through strengthen the enzyme activity of DHAR and GR and up-regulating their gene-expression to increase the content of ascorbic acid.

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Last Update: 2015-07-15