Chemical Components and Quality Characteristics of Waxy Corns Cultured by Conventional and Environmentally-Friendly Methods

摘要

The objective of this study was to investigate the chemical components and quality characteristics of three waxy corn varieties (Heukjinju, Ilmi, and Yeonnongl) harvested by conventional cultivation (CC) and environmentally-friendly cultivation (EFC).Crude ash content of the three corn varieties was higher, but not significant, in CC than EFC. Crude fat and protein contents in Heukjinju were higher in EFC, and amy lose content was significantly higher (p<0.001). Free sugar, minerals, and fatty acidcomposition patterns varied according to the cultivation method. Vitamin E contents in the Heukjinju and Yeonnongl cultivars were higher in CC than EFC. Total polyphenol content of waxy corns on EFC and CC were 175.28 and 204.00 mg/100 g, respectively, in the Heukjinju cultivar (p<0.01), and 148.64 and 158.42 mg/100 g, respectively, in the Ilimi cultivar, and 123.24 and 128.30 mg/100 g, respectively, in the Yeonnongl cultivar. 2,2-Diphenyl-l-picrylhydrazyl radical scavenging activity on EFC and CC was 1.51 and 1.76 in Heukjinju cultivar (p<0.05), 0.29 and 0.34 in Ilmi cultivar (p>0.05), and 0.39 and 0.42 mg trolox eq/g in Yeonnongl cultivar (p>0.05), respectively. However, 2,2'-azinobis-(3-ethylbenzothiazoline-6-sulfonate) radical scavenging activity was higher in CC than EFC.