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酒糟主要成分含量的近紅外反射光譜快速分析
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國家自然科學(xué)基金資助項(xiàng)目(31072062);科技部國際合作資助項(xiàng)目(2010DFA34540);歐盟第七框架資助項(xiàng)目(FPT—265702,QSAFFE)


Rapid Quantitative Determination of Main Components in Dried Distillers’ Grains by Near-infrared Spectroscopy
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    摘要:

    從全國21個省份收集78個代表性酒糟樣品,采用國標(biāo)方法測定了其成分含量并進(jìn)行了統(tǒng)計分析,結(jié)果顯示粗纖維、粗灰分和粗蛋白3種成分質(zhì)量分?jǐn)?shù)分布范圍分別為1.60%~37.54%、0.74%~26.85%和12.01%~38.69%,標(biāo)準(zhǔn)偏差分別為8.33%、5.21%和7.11%,樣品成分含量差異較大。利用NIRS建立了其粗纖維、粗灰分和粗蛋白質(zhì)量分?jǐn)?shù)的定量分析模型,定標(biāo)決定系數(shù)分別為0.98、0.91和0.96,定標(biāo)標(biāo)準(zhǔn)誤差分別為1.19%、1.58%和1.61%,驗(yàn)證決定系數(shù)分別為0.98、0.92和0.96,預(yù)測標(biāo)準(zhǔn)誤差分別為1.20%、1.57%和1.60%,相對分析誤差分別為7.38、3.75和4.98,模型預(yù)測精度較高,可以用于實(shí)際檢測分析。

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    Dried distillers’ grains were rich in nutrition, which used as protein feed materials, and could give some benefit to supplement feed deficit and reduce feed cost. Totally 78 dried distillers’ grains samples were collected from 21 provinces of China. Crude fiber, crude ash and crude protein contents were detected in laboratory by standard methods. The statistic analysis showed that the distribution range of crude fiber, crude ash and crude protein contents were 1.60%~37.54%, 0.74%~26.85% and 12.01%~38.69%, respectively, the standard distribution value of them were 8.33%, 5.21% and 7.11%, respectively. The big differences in components content were mainly caused by the remaining rice hull during drying and separating process. Quantitative evaluation models were established to determinate crude fiber, crude ash and crude protein content of dried distillers’ grains by NIRS methods. The results of NIRS analysis showed that this method could provide rapidly quantitative prediction for crude fiber, crude ash and crude protein contents in dried distillers’ grains, the coefficient of determination in calibration were 0.98, 0.91 and 0.96, respectively; the standard error in calibration were 1.19%, 1.58% and 1.61%, respectively; the coefficient of determination in validation were 0.98, 0.92 and 0.96, respectively; the standard error in validation were 1.20%, 1.57% and 1.60%, respectively, and the ratio of performance to standard deviation were 7.38, 3.75 and 4.98, respectively. The prediction values of these models are accurate.

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周興藩,楊增玲,劉賢,黃光群,韓魯佳.酒糟主要成分含量的近紅外反射光譜快速分析[J].農(nóng)業(yè)機(jī)械學(xué)報,2012,43(3):103-107. Zhou Xingfan, Yang Zengling, Liu Xian, Huang Guangqun, Han Lujia. Rapid Quantitative Determination of Main Components in Dried Distillers’ Grains by Near-infrared Spectroscopy[J]. Transactions of the Chinese Society for Agricultural Machinery,2012,43(3):103-107.

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  • 在線發(fā)布日期: 2012-03-17
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