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食用油酸值與過(guò)氧化值近紅外光譜模型轉(zhuǎn)移研究
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北京市自然科學(xué)基金項(xiàng)目(4182017)和國(guó)家重點(diǎn)研發(fā)計(jì)劃項(xiàng)目(2018YFD0101000)


Transfer of Near-infrared Spectroscopy Model of Edible Oil Acid Value and Peroxidation Value
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    摘要:

    在使用近紅外光譜技術(shù)進(jìn)行食用油酸值與過(guò)氧化值檢測(cè)時(shí),儀器制造與檢測(cè)環(huán)境的差異導(dǎo)致不同儀器建立的校正模型無(wú)法共享,。為解決食用油酸值與過(guò)氧化值模型轉(zhuǎn)移問(wèn)題,,使用125個(gè)食用油樣本于主機(jī)建立偏最小二乘校正模型,采用光譜空間轉(zhuǎn)換法進(jìn)行模型轉(zhuǎn)移,,并與斜率/截距算法,、直接標(biāo)準(zhǔn)化算法、分段直接標(biāo)準(zhǔn)化算法,、極限學(xué)習(xí)機(jī)自編碼器算法進(jìn)行對(duì)比,。結(jié)果表明,采用光譜空間轉(zhuǎn)換法進(jìn)行模型轉(zhuǎn)移后,,驗(yàn)證集酸值與過(guò)氧化值的預(yù)測(cè)均方根誤差分別從0.5836mg/g和15.8010mmol/kg降低到了0.1670mg/g與9.9893mmol/kg,,說(shuō)明光譜空間轉(zhuǎn)換法可以有效應(yīng)用于食用油酸值與過(guò)氧化值間的模型轉(zhuǎn)移,使不同儀器之間實(shí)現(xiàn)模型共享,,這對(duì)于近紅外光譜應(yīng)用于食用油品質(zhì)快速檢測(cè)具有實(shí)際意義,。

    Abstract:

    Near-infrared spectroscopy (NIRS) detection technology has been widely used in the field of edible oil quality detection due to its features of simple operation, no damage, fast detection and analysis. However, due to differences in manufacturing and testing environment, instrument aging, replacement of accessories and other factors, the spectral response of the same sample on different instruments was not completely consistent, resulting in the failure to share calibration models established by different instruments. To solve the problem of edible oil quality detection of acid value and peroxide value model transfer problem, transfer model was established by using the spectral space transformation method, which realized the calibration transfer of acid value and peroxide value between different instruments, and the slope/bias algorithm, direct standardized algorithm and piecewise direct standardization, extreme learning machine auto-encoder algorithm were compared. The VERTEX-70 Fourier near infrared spectrometer and MATRIX-F on-line process analysis Fourier spectrometer were used. Totally 125 edible oil samples were used in the experiment, VERTEX-70 was used as master instrument and MATRIX-F as slave instrument to establish the multivariate calibration model of acid value and peroxide value. The results showed that the prediction root-mean-square error of the validation set of acid value and peroxide value was reduced from 0.5836mg/g and 15.8010mmol/kg to 0.1670mg/g and 9.9893mmol/kg by using spectral space transformation method for model transfer. Obviously, spectral space transformation can be effectively applied to model transfer between edible oleic acid value and peroxidation value, so as to realize model sharing between different instruments. The problem of time and energy consumption caused by re-modeling can be avoided, which was of great significance for the application of NIRS in the rapid detection of edible oil quality.

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劉翠玲,劉浩言,孫曉榮,吳靜珠,楊雨菲.食用油酸值與過(guò)氧化值近紅外光譜模型轉(zhuǎn)移研究[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2020,51(9):344-349. LIU Cuiling, LIU Haoyan, SUN Xiaorong, WU Jingzhu, YANG Yufei. Transfer of Near-infrared Spectroscopy Model of Edible Oil Acid Value and Peroxidation Value[J]. Transactions of the Chinese Society for Agricultural Machinery,2020,51(9):344-349.

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  • 收稿日期:2019-11-11
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  • 在線發(fā)布日期: 2020-09-10
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