| 基于偏最小二乘法的板栗近红外光谱分析模型的建立 |
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| 引用本文： | 傅谊,张拥军,陈华才,蒋家新,刘建风.基于偏最小二乘法的板栗近红外光谱分析模型的建立[J].食品科技,2012(5):42-45,51. |
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| 作者姓名： | 傅谊 张拥军 陈华才 蒋家新 刘建风 |
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| 作者单位： | 中国计量学院生命科学学院;中国计量学院现代计量测试技术与仪器浙江省重点实验室 |
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| 基金项目： | 浙江省科技厅重大招标科研项目(2006C12103) |
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| 摘 要： | 目的:应用近红外光谱技术和化学计量学方法,建立板栗品质分析的近红外光谱模型。方法:采用傅里叶变换近红外光谱仪,采集样品的近红外漫反射光谱,再用传统理化分析方法测得样品的各项品质参数,采用偏最小二乘法(PLS)建立定标模型,内部交叉验证法对模型进行检验。结果:对板栗分别建立了水分、淀粉、硬度和糖度的PLS模型,4种PLS模型都非常理想,模型的相关系数均大于0.99。结论:采用近红外光谱法可以实现板栗品质指标的快速无损检测。
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| 关 键 词： | 板栗 近红外光谱法 偏最小二乘法(PLS) 含量测定 |
Establishment of NIR models for components determination in fresh chestnut |
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| FU Yi,ZHANG Yong-jun,CHEN Hua-cai,JIANG Jia-xin,LIU Jian-feng.Establishment of NIR models for components determination in fresh chestnut[J].Food Science and Technology,2012(5):42-45,51. |
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| Authors: | FU Yi ZHANG Yong-jun CHEN Hua-cai JIANG Jia-xin LIU Jian-feng |
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| Affiliation: | 1(1.College of Life Sciences,China Jiliang University,Hangzhou 310018;2.Modern Measurement Technology and Instrument Key Laboratory of Zhejiang Province,China Jiliang University,Hangzhou 310018) |
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| Abstract: | Objective:To quantitative determinate several components of fresh chestnut directly and rapidly by using near infrared spectroscopy and chemometrics.Method:The NIR spectra of calibration set samples were collected with FT-NIR spectrometer,and the reference concentrations of components were analyzed with the standard chemical analysis methods.The calibration models were established using partial least square(PLS) regression and validated with leave-one-out cross validation method.Result:Result:The calibration models for analysis of water,amylum,texture and sugar contents were established with correlation coefficients over 0.99.Conclusion:It is possible to use NIR method to rapidly determinate the content of the above components in fresh chestnut. |
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| Keywords: | fresh chestnut near infrared spectroscopy(NIR) partial least square(PLS) content determination |
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