真空包裝冷卻羊肉pH值和顏色的近紅外快速無損檢測
[Abstract]:[objective] there are some problems in the traditional determination of the freshness of mutton, such as the complicated operation, the use of chemical reagent, the destruction and contact of the sample, etc. The pH value and color of chilled mutton in vacuum packaging were studied. [methods] using Xinjiang small tail Han sheep as the research object, the near infrared spectroscopy (NIRS),) technique was used to detect the pH value and color of mutton. The rapid nondestructive testing of physical and chemical indexes of vacuum packaged chilled mutton during storage was studied. The chemical index pH and the physical index color brightness (L *) were studied. Spectral preprocessing and feature band screening were used to optimize and simplify the prediction model of each index content. [results] pH and L * were established by combining genetic algorithm (GA) and continuous projection algorithm (SPA) to screen feature bands. The multivariate linear regression model (MLR) is the best. Compared with single band screening method, the correlation coefficient of prediction set is 0.91.The root mean square error of prediction set is 0.13 and 1.91.Conclusion Near-infrared spectroscopy has the advantages of green, nondestructive and multi-index analysis. It can replace the traditional detection method to realize fast nondestructive and accurate detection of meat physicochemical index.
【作者單位】: 石河子大學(xué)機(jī)械電氣工程學(xué)院;
【基金】:國家自然科學(xué)基金項(xiàng)目“新疆冷卻羊肉儲(chǔ)藏品質(zhì)的動(dòng)力學(xué)及不同光學(xué)速測技術(shù)融合研究”(31460418) 石河子大學(xué)青年創(chuàng)新人才培育計(jì)劃項(xiàng)目“基于多源光學(xué)信息的羊肉新鮮度快速檢測機(jī)理及系統(tǒng)開發(fā)研究”(CXRC201707)~~
【分類號(hào)】:O657.33;TS251.53
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