食品科学

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不同玉米籽粒中烟酸和玉米黄质含量的测定

邓小净,梅秀鹏,徐 德,陈淅宁,刘晓丽,刘朝显,蔡一林*   

  1. 西南大学玉米研究所,重庆 400715
  • 出版日期:2015-06-25 发布日期:2015-06-12
  • 通讯作者: 蔡一林
  • 基金资助:

    重庆市重大攻关项目(CSTC2012ggc80003;CSTC2012ggc80004;CSTC2012ggc80006)

Niacin and Zeaxanthin Contents in Different Maize Kernels

DENG Xiaojing, MEI Xiupeng, XU De, CHEN Xining, LIU Xiaoli, LIU Chaoxian, CAI Yilin*   

  1. Maize Research Institute, Southwest University, Chongqing 400715, China
  • Online:2015-06-25 Published:2015-06-12
  • Contact: CAI Yilin

摘要:

从3 200 份玉米自交系中选取123 份作为研究材料,采用微生物法和分光光度法分别测定玉米籽粒中烟酸和玉米黄质含量,分析玉米类型、籽粒色泽、籽粒类型对籽粒中烟酸和玉米黄质含量的影响及烟酸和玉米黄质含量的相关性。结果表明,玉米籽粒中烟酸含量为0.57~4.80 mg/100 g,糯玉米远高于普通玉米,白玉米高于黄玉米,紫玉米介于白玉米和黄玉米之间。不同粒型间、同一粒色不同粒型间的烟酸含量则差异不显著。玉米籽粒中玉米黄质含量为0.35~4.03 mg/kg,糯玉米远低于普通玉米,白玉米低于黄玉米,紫玉米介于白玉米和黄玉米之间。不同粒型间、同一粒色不同粒型间的玉米黄质含量则差异不显著。由此说明,玉米类型、籽粒色泽对烟酸含量和玉米黄质含量有极显著影响,而籽粒类型的主效应、籽粒类型与籽粒色泽的交互效应均不显著。相关分析表明,籽粒中烟酸含量与玉米黄质含量存在极显著的中度负相关关系(r=-0.361,P<0.01),即籽粒中烟酸含量越高,玉米黄质含量越低。

关键词: 玉米, 烟酸, 玉米黄质

Abstract:

Microbiological and spectrophotometric methods were respectively used to determine the contents of niacin and
zeaxanthin in maize kernels of 123 from 3 200 inbred lines to study the effects of maize type, kernel color and kernel type
on the contents of both phytochemicals in maize as well as their correlation. The results showed that the niacin content
of maize was in the range of 0.57–4.80 mg/100 g; the niacin content of waxy maize was much higher than that of normal
maize, the niacin content of white maize was higher than that of yellow maize, and the niacin content of purple maize was
between those of white maize and yellow maize. No significant differences in niacin contents were found among different
kernel types and among different kernel types with the same kernel color. The zeaxanthin content of maize varied from 0.35
to 4.03 mg/kg. The zeaxanthin content of waxy maize was much lower than that of normal maize, the zeaxanthin content of
white maize was lower than that of yellow maize, and the zeaxanthin content of purple maize was between those of white
maize and yellow maize. No significant differences in zeaxanthin contents existed among different kernel types and among
different kernel types with the same kernel color. These results indicated that the different maize types and kernel colors of
maize significantly affected the contents of niacin and zeaxanthin, whereas the main effect of kernel type and its interactive
effect with kernel color were not significantly different. Moreover, there was a moderate but significant negative correlation
between niacin content and zeaxanthin content in maize (r = - 0.361, P < 0.01), indicating that the higher the niacin content,
the lower the zeaxanthin content. These findings could provide a reference for the reasonable application of maize kernels
and the improvement of maize breeding.

Key words: maize, niacin, zeaxanthin

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