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Acta Agron Sin ›› 2014, Vol. 40 ›› Issue (07): 1227-1234.doi: 10.3724/SP.J.1006.2014.01227

• TILLAGE & CULTIVATION·PHYSIOLOGY & BIOCHEMISTRY • Previous Articles     Next Articles

Variation of Provitamin A and Vitamin E Components at Milk Stage of Kernel Development in Sweet Corn

FENG Fa-Qiang1,WANG Guo-Hua1,WANG Qing-Feng1,YANG Rui-Chun1,LI Xiao-Qin1,2,*   

  1. 1 College of Agriculture, South China Agricultural University, Guangzhou 510642, China; 2 State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, South China Agricultural University, Guangzhou 510642, China
  • Received:2013-11-25 Revised:2014-04-16 Online:2014-07-12 Published:2014-05-16
  • Contact: 李小琴, E-mail: xiaoqinli2000@126.com, Tel: 020-85285332

Abstract:

 

Vitamin A and Vitamin E are two kinks of micronutrients that must be acquired regularly from dietary sources. Sweet corn is a type of fresh corn for direct consumption by human beings. The content of provitamin A and vitamin E components at milk stage of kernels development were measured by HPLC in 47 sweet corn lines. The results showed that the contents of carotenoids and tocopherols and the α/γ tocopherol ratio were extremely different among 47 sweet corn lines. The non-provitamin A, including lutein and zeaxanthin, is the main components of the total carotenoids. The main component of vitamin E is γ-tocopherol. The pearson correlation analysis showed that significantly positive correlation and non-correlation were detected among most traits. β-Carotene was significantly positive correlated with zeaxanthin, β-cryptoxanthin and α-carotenoids, respectively. Three isomers of vitamin E were significantly correlated between each other. The ratio of α/γ tocopherol had a significantly negative correlation with δ-tocopherol and γ-tocopherol and a significantly positive correlation with zeaxanthin and α-tocopherol. A significantly positive association was found between β-carotene and α-tocopherol. These results provide useful information for the research on provitamin A and vitamin E metabolism and nutritional improvement in sweet corn.

Key words: Sweet corn, Milk stage, Provitamin A, Vitamin E, HPLC

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