| 小麦籽粒PPO活性和戊聚糖含量对面粉白度影响 |
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| 引用本文： | 张菊芳,郭文善,封超年,朱新开,彭永欣.小麦籽粒PPO活性和戊聚糖含量对面粉白度影响[J].扬州大学学报(农业与生命科学版),2008,29(4). |
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| 作者姓名： | 张菊芳 郭文善 封超年 朱新开 彭永欣 |
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| 作者单位： | 1. 扬州大学,江苏省作物遗传生理重点实验室/扬州大学小麦研究所,江苏,扬州,225009;扬州市农业局,江苏,扬州,225002
2. 扬州大学,江苏省作物遗传生理重点实验室/扬州大学小麦研究所,江苏,扬州,225009 |
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| 基金项目： | 国家自然科学基金资助项目(30170540,30571091) |
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| 摘 要： | 以不同类型小麦品种为材料,研究籽粒形成灌浆过程中多酚氧化酶（PPO）活性和戊聚糖含量动态变化,以及二者在籽粒中分布及其与面粉白度的关系。结果表明：小麦籽粒中PPO主要分布在籽粒外层,面粉白度和籽粒中PPO活性呈极显著负相关,面粉中PPO活性与面粉白度呈负相关,但不显著;籽粒形成与充实过程中,PPO活性呈先上升后下降再上升趋势,开花至花后21 d左右时,呈先上升后下降趋势,花后21 d PPO活性迅速上升,至成熟期达最大值;戊聚糖在小麦籽粒中的分布具有由内到外逐渐增加的特性,面粉和麸皮中戊聚糖含量与白度呈显著负相关,随着戊聚糖含量的增加,面粉白度逐渐降低,不同小麦品种籽粒戊聚糖含量的动态变化表现较为一致,均呈先上升后下降再上升趋势。
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| 关 键 词： | 小麦 PPO活性 戊聚糖 面粉白度 |
Effects of PPO activity and pentosan content on flour whiteness |
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| ZHANG Ju-fang,GUO Wen-shan,FENG Chao-nian,ZHU Xin-kai,PENG Yong-xin.Effects of PPO activity and pentosan content on flour whiteness[J].Journal of Yangzhou University:Agricultural and Life Science Edition,2008,29(4). |
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| Authors: | ZHANG Ju-fang GUO Wen-shan FENG Chao-nian ZHU Xin-kai PENG Yong-xin |
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| Institution: | 1.Key Lab of Crop Gen and Phys of Jiangsu Prov/Wheat Res Inst;Yangzhou Univ;Yangzhou 225009;China;2.Agric Dept of Yangzhou City;Jiangsu Prov;Yangzhou 225002;China |
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| Abstract: | The experiments mainly studied effects of PPO activity and pentosan on flour whiteness among wheat varieties.The main results were as follows,PPO was mainly in the outer part of wheat kernels.PPO activity in flour and grains negatively related with flour whiteness.With the development of grains,PPO activity rose at first,then declined gradually before the 21st day after anthesis(DAA).After the 21st DAA,PPO activity rose quickly,and reached the maximum at maturity.The distribution of pentosan in grains was t... |
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| Keywords: | wheats PPO activity pentosan Whiteness |
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