| 南阳灰色小麦色素的变色范围与吸收光谱特性 |
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| 引用本文： | 高向阳,朱盈蕊,高遒竹,王长青.南阳灰色小麦色素的变色范围与吸收光谱特性[J].粮油食品科技,2015,23(5):68-71. |
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| 作者姓名： | 高向阳 朱盈蕊 高遒竹 王长青 |
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| 作者单位： | 郑州科技学院 食品科学与工程系，河南 郑州 450064；河南农业大学食品科学技术学院，河南 郑州 450002,郑州市质量技术监督检验测试中心，河南 郑州 450006,江南大学食品学院，江苏 无锡 214122,河南农业大学食品科学技术学院，河南 郑州 450002 |
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| 摘 要： | 探讨南阳彩色小麦色素的变色范围和吸收光谱等特性,为该资源的科学利用和开发提供参考。以南阳灰麦为材料,用酸性乙醇溶液超声波辅助浸提色素后,用酸碱滴定法和分光光度法测定。结果表明:在可见光区,色素乙醇溶液的最大吸收波长为541 nm,变色范围为p H 4.75~6.58;灰麦色素是较理想、经济的环保型酸碱指示剂,也可作为天然着色剂和抗氧化剂等食品添加剂加以开发利用。
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| 关 键 词： | 彩色小麦 色素 变色范围 吸收光谱 |
Absorption spectral characteristics and colour range of pigment in Nanyang grey wheat |
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| Abstract: | The absorption spectral characteristics and colour range of pigment in Nanyang grey wheat was studied, which provided reference for scientific utilization and development of the pigment. Nanyang grey wheat was soaked in acidic ethanol to extract pigment by ultrasonic. The pigment was determined by acid- base titration and spectrophotometry. The results showed that in the visible region the maximum absorption wavelength lied at 541 nm, colour range was pH 4.75~6.58. The pigment in grey wheat is a relatively ideal, economical and environmentally friendly acid-base indicator, it can be developed and used as a natural colorant and antioxidant in food. |
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| Keywords: | color wheat pigment colour range absorption spectra |
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