Abstract
Vitamin C, as an essential vitamin for humans, has important physiological functions, such as antioxidants and enzyme cofactors. Mung bean sprouts are a good source of vitamin C and light is an essential impact factor of vitamin C content during germination. This study focused on the kinetic changes and metabolic regulation mechanism of vitamin C during mung bean sprouting under three-light treatment including constant light (24 h light/0 h dark), semi-light (12 h light/12 h dark) and constant dark (0 h light/24 h dark). Results confirmed that vitamin C content increased with the raised of light time during germination. The highest level of vitamin C, appeared on three days after constant light treatment (3-DALT), was 78 - fold higher than the initial concentration. L-ascorbic acid content on 3-DALT of mung bean sprouts was 21.4 and 29.8 times higher compared to the value on day 3 with semi -light treatment and constant dark treatment, respectively. Additionally, PMI, GME, GLDH, GalUR and DHAR expressions had strong correlations with L-ascorbic acid and vitamin C responding to light. Results indicated that light had an intimate correlation with the component and biosynthesis of vitamin C.
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Abbreviations
- ASA:
-
Ascorbic acid
- DADT:
-
Days after constant dark treatment
- DALT:
-
Days after constant light treatment
- DAST:
-
Days after semi-light treatment
- DHA:
-
Dehydroascorbic acid
- DHAR:
-
Dehydroascorbic acid reductase
- GLDH:
-
L-galactonolactone dehydrogenase
- GME:
-
GDP-mannose 3,5-epimerase
- HAI:
-
Hours after imbibition
- PMI:
-
Mannose-6-phosphate isomerase
- RDA:
-
Recommended dietary allowance
- ROS:
-
Reactive oxygen species
- DT:
-
Dark treatment
- LT:
-
Light treatment
- ST:
-
Semi-light treatment
- VC:
-
Vitamin C
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This research was funded by National Natural Science Foundation of China (31501765).
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Lu, Y., Guo, X. The Effect of Light in Vitamin C Metabolism Regulation and Accumulation in Mung Bean (Vigna radiata) Germination. Plant Foods Hum Nutr 75, 24–29 (2020). https://doi.org/10.1007/s11130-019-00787-x
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DOI: https://doi.org/10.1007/s11130-019-00787-x