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Int. J. Mol. Sci. 2017, 18(6), 1246; doi:10.3390/ijms18061246

Effect of Light- and Dark-Germination on the Phenolic Biosynthesis, Phytochemical Profiles, and Antioxidant Activities in Sweet Corn (Zea mays L.) Sprouts

1
School of Food Science and Engineering, South China University of Technology, Guangzhou 510641, China
2
Crop Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China
3
Key Laboratory of Crops Genetics Improvement of Guangdong Province, Guangzhou 510640, China
4
Department of Wine, Food and Molecular Bioscience, Lincoln University, Canterbury 7647, New Zealand
*
Authors to whom correspondence should be addressed.
Received: 23 April 2017 / Revised: 3 June 2017 / Accepted: 7 June 2017 / Published: 10 June 2017
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Abstract

Sweet corn is one of the most widely planted crops in China. Sprouting of grains is a new processes to increase the nutritional value of grain products. The present study explores the effects of light on the nutritional quality of sweet corn sprouts. Gene expression of phenolic biosynthesis, phytochemical profiles and antioxidant activity were studied. Two treatments (light and dark) were selected and the morphological structure of sweet corn sprouts, as well as their biochemical composition were investigated to determine the effects of light on the regulation of genes responsible for nutritional compounds. Transcription analyses for three key-encoding genes in the biosynthesis of the precursors of phenolic were studied. Results revealed a negative regulation in the expression of ZmPAL with total phenolic content (TPC) in the light group. TPC and total flavonoid content (TFC) increased during germination and this was correlated with an increase in antioxidant activity (r = 0.95 and 1.0). The findings illustrate that the nutritional value of sweet corn for the consumer can be improved through germination to the euphylla stage. View Full-Text
Keywords: germination; sweet corn; phenolic biosynthesis; antioxidant activity germination; sweet corn; phenolic biosynthesis; antioxidant activity
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Xiang, N.; Guo, X.; Liu, F.; Li, Q.; Hu, J.; Brennan, C.S. Effect of Light- and Dark-Germination on the Phenolic Biosynthesis, Phytochemical Profiles, and Antioxidant Activities in Sweet Corn (Zea mays L.) Sprouts. Int. J. Mol. Sci. 2017, 18, 1246.

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