| 猕猴桃糖度傅里叶变换近红外光谱无损检测 |
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| 引用本文： | 陈香维,杨公明.猕猴桃糖度傅里叶变换近红外光谱无损检测[J].西北农业学报,2011,20(7):143-148. |
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| 作者姓名： | 陈香维 杨公明 |
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| 作者单位： | 1. 西北农林科技大学食品科学与工程学院,陕西杨凌,712100
2. 华南农业大学食品学院,广州,510642 |
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| 摘 要： | 研究傅里叶漫反射近红外光谱技术在猕猴桃糖度无损检测中的应用。在近红外区域(4 000~12 000cm-1)利用偏最小二乘法(PLS)建立猕猴桃糖度与近红外光谱(NIR)的定量分析数学模型,并对不同果园、不同贮藏期、不同质量的样品所建立的糖度预测模型进行对比分析。结果表明,近红外漫反射光谱与猕猴桃糖度含量之间呈显著的线性相关,模型决定系数(R2)可达到93.65%,预测标准差RMSEP(Root Mean SquareError of Prediction)可达0.656;而且随着建模样品量及成分含量梯度的增大,预测模型通用性提高,而准确性降低。因此,建立近红外定量分析模型时,样品组成和性质应该覆盖分析样品的组成和性质的整个变化范围,以更好地满足实际应用的需要。
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| 关 键 词： | 猕猴桃 NIR 糖度 PLS |
Using FT NIR Spectra in Non destructive Measurement of Kiwifruit Sugar Content |
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| CHEN Xiangwei,and YANG Gongming.Using FT NIR Spectra in Non destructive Measurement of Kiwifruit Sugar Content[J].Acta Agriculturae Boreali-occidentalis Sinica,2011,20(7):143-148. |
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| Authors: | CHEN Xiangwei and YANG Gongming |
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| Institution: | CHEN Xiangwei1 and YANG Gongming2(1.College of Food Science and Engineering,Northwest A&F University,Yangling Shaanxi 712100,China,2.College of Food Science,South China Agricultural University,Guangzhou 510642,China) |
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| Abstract: | The nondestructive analysis of soluble-solids in kiwifruit by near infrared spectroscopy was discussed with the technique of fourier transform near infrared sapectroscopy(FT-NIRS).In the range of 12 000 to 4 000 cm{-1},PLS calibration models were deveoloped and optimized for rapid assay analysis of soluble-solids in kiwifruit.Meanwhile,the calibration models were tested inwhich to the different orchard,the different storage period,and the different quality's sample were carried on the contrastive analysis.T... |
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| Keywords: | Kiwifruit NIR Sugar content PLS |
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