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基于近紅外光譜的食用油酸價和過氧化值自動化檢測
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中央高?;究蒲袠I(yè)務(wù)費(fèi)專項(QN2009074);西北農(nóng)林科技大學(xué)大型儀器設(shè)備新功能開發(fā)項目(DYSB090218)


Automatic Determination of Acid Value and Peroxide Value of Edible Oils by Near-infrared Spectroscopy
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    為實現(xiàn)食用油酸價和過氧化值的自動化快速檢測,,以常見食用油為材料,,利用近紅外自動分析儀結(jié)合連續(xù)進(jìn)樣流通池,建立食用油酸價和過氧化值的定量模型并進(jìn)行模型驗證,。結(jié)果表明:在波數(shù)范圍為5500~4600cm-1時,光譜預(yù)處理選擇(6524,4823)兩點基線校正和標(biāo)準(zhǔn)正交變換,酸價定量模型驗證相關(guān)系數(shù)和預(yù)測標(biāo)準(zhǔn)偏差分別為0.9873和0.114mg/g,;在波數(shù)范圍為6050~4450cm-1時,選擇一階求導(dǎo)和Norris導(dǎo)數(shù)平滑,,過氧化值定量模型驗證相關(guān)系數(shù)和預(yù)測標(biāo)準(zhǔn)偏差分別為0.9958和0.90mmol/kg,;模型盲樣驗證效果良好,模型可行,,通過近紅外自動分析儀每小時可檢測90個樣品,。

    Abstract:

    For automatic determination of acid value and peroxide value of edible oils, using edible oils as raw materials, calibrations were developed and validated for determination of acid value and peroxide value by near-infrared spectrometer with continuous samples injection cell. The correlation coefficient R and the root mean square errors of prediction (RMSEP) of the calibration for acid value were 0.9873 and 0.114mg/g in range of 5500~4600cm-1 with baseline correction point at 6524cm-1 and 4823cm-1 and standard normal variant (SNV). The R and RMSEP for peroxide value of calibration were 0.9958 and 0.90mmol/kg in range of 6050~4450cm-1 with first derivative and Norris filter. The results of blind samples validation were good, the calibrations were workable, throughput of 90 samples can be achieved per hour.

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于修燭,張靜亞,李清華,許春瑾,高錦明.基于近紅外光譜的食用油酸價和過氧化值自動化檢測[J].農(nóng)業(yè)機(jī)械學(xué)報,2012,43(9):150-154,159. Yu Xiuzhu, Zhang Jingya, Li Qinghua, Xu Chunjin, Gao Jinming. Automatic Determination of Acid Value and Peroxide Value of Edible Oils by Near-infrared Spectroscopy[J]. Transactions of the Chinese Society for Agricultural Machinery,2012,43(9):150-154,159.

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  • 在線發(fā)布日期: 2012-09-04
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