搜索结果: 1-14 共查到“食品科学技术 NIR”相关记录14条 . 查询时间(0.159 秒)
Prediction of Total Phenolics and Flavonoids Contents in Chinese Wild Rice (Zizania latifolia) Using FT-NIR Spectroscopy
Total Phenolics Flavonoids Contents
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2016/6/2
Total phenolics and flavonoids contents in Chinese wild rice were predicted using Near Infrared (NIR) spectroscopy as a rapid method. A Partial Least Square (PLS) algorithm was applied to perform the ...
利用900~1700 nm近红外高光谱成像系统对冷鲜羊肉嫩度进行快速无损检测研究。采集冷鲜羊肉(1~8 d)表面的高光谱散射图像,提取样本感兴趣区域反射光谱曲线并用剪切力值表征冷鲜羊肉的标准嫩度。以原始光谱、特征区域光谱和Savitzky-Golay卷积平滑预处理光谱建立冷鲜羊肉嫩度的偏最小二乘回归(PLSR)模型,预处理的特征区域光谱建立的模型效果更优。结果表明:特征区域光谱可有效替代全波段光谱...
Preliminary study using visible and SW-NIR analysis for evaluating the loss of freshness in commercially packaged cooked ham and Turkey ham
spectroscopy hyperspectral camera storage time cold meat
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2014/8/11
A non-destructive Vis-NIR spectroscopy (400–1000 nm) method was developed to evaluate the loss of freshness of sliced and commercially packaged cooked ham and turkey ham without any sample manipulatio...
Dynamic NIR Spectroscopy to Monitor Bread Dough Mixing: A Short Review
Monitor Bread Dough Mixing Short Review
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2016/5/31
Near infrared (NIR) spectroscopy has been recognized as a valuable tool for quality control in both industry and laboratories. The aim of this review is to describe the ability of the dynamic NIR spec...
Dynamic NIR Spectroscopy to Monitor Wheat Product Processing: A Short Review
Monitor Wheat Product Processing Short Review
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2016/5/31
The aim of this short review is to present the different applications of NIR spectroscopy to monitor and describe physical and chemical modifications during wheat products processing. The dynamic NIR ...
Vis/NIR hyperspectral imaging for detection of hidden bruises on kiwifruits
Actinidia deliciosa principal component analysis support vector machine
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2014/2/25
It is necessary to develop a non-destructive technique for kiwifruit quality analysis because the machine injury could lower the quality of fruit and incur economic losses. Bruises are not visible ext...
南丰蜜桔可溶性固形物近红外特征波段选择（Selection of NIR Characteristic Wavelength Bands for Soluble Solids Content in Nanfeng Mandarin Fruit）
南丰蜜桔 可溶性固形物 近红外光谱 间隔偏最小二乘法
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2009/8/11
探讨了在350～1800nm波段范围内不同光谱预处理方法对提高模型预测能力和稳定性的作用，但其效果不如间隔偏最小二乘法显著。通过间隔偏最小二乘特征波段选择方法，确定了南丰蜜桔可溶性固形物特征波段为：642～787nm、861～1006nm、1080～1152nm和1226～1371nm。采用30个未参与建模的南丰蜜桔样品，预测特征波段建模模型，预测模型的相关系数为0.95，预测均方根误差为0.55...
NIR Measurement of Specific Gravity of Potato
near infrared (NIR) spectroscopy specific gravity potato partial least square
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2009/6/10
Near infrared (NIR) spectroscopy was investigated as a method for nondestructive measurement of specific gravity of potato. A total of 250 potatoes of three cultivars, Irish-Cobbler, May-Queen and Kit...
基于滤光片型NIR光谱仪快速测定完整大豆蛋白含量的研究
蛋白质 偏最小二乘法 无损检测
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2009/3/24
采用滤光片型近红外光谱分析仪对来自全国各地的38个完整颗粒大豆样品中蛋白质的含量进行快速测定的研究，根据凯氏定氮法测得的蛋白质含量，运用偏最小二乘法（PLS）建立完整大豆的蛋白质校正模型，其校正相关系数0.935，预测相关系数0.946，最大相对误差为2.47%，平均相对误差1.36%，预测均方差0.59，试验证明该滤光片型近红外光谱仪快速检测完整大豆的蛋白质含量具有较高的检测精度，能满足生产、加...
NIR FT-Raman和FTIR光谱法无损快速鉴别药材的真伪——八角茴香及其伪品
FTIR NIR FT-Raman
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2008/5/12
本文首次利用近红外傅立叶变换拉曼(NIR FT-Raman)和傅立叶变换红外(FT-IR)光谱法无损快速鉴别了八角茴香和伪品莽草、红茴香。结果表明:八角茴香和伪品莽草、红茴香在拉曼和红外谱图中均有各自的特征峰,可容易地将它们区别开来。该方法具有快速、准确、操作简单、不需对样品进行提取分离,可直接进行测定等特点。
Nondestructive identification of tea (Camellia sinensis L.) varieties using FT-NIR spectroscopy and pattern recognition
green teaAvarietyAidentificationAFT-NIR spectroscopyApattern recognition
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2014/3/3
Due to more and more tea varieties in the current tea market, rapid and accurate identification of tea (Camellia sinensis L.) varieties is crucial to the tea quality control. Fourier Transform Near-In...
Bread features evaluation by NIR analysis
wheat flour dough maturograph OTG NIRSystem 6500 prediction of rheological characteristics
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2014/3/4
Bakery characteristics of wheat dough and the final product and their predictability by NIR technique was investigated using 231 variety and commercial wheat samples (crop years 2003–2005). The behavi...
Determination of selected parameters of quality of the dairy products by NIR spectroscopy
NIR spectroscopy dairy products dry matter fat pH titrable acidity of yoghurt
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2014/3/17
The possibility of the application of near-infrared spectroscopy to the analysis of the selected parameters of quality of the dairy products was followed. The contents of solids and fat, as well as pH...
Prediction of wheat and flour Zeleny sedimentation value using NIR technique
wheat flour Zeleny sedimentation value NIRSystem 6500 Inframatic 8620 ASH prediction of quality
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2014/3/19
Analytical quality parameters of wheat flour prepared from variety and commercial wheat samples (wheat harvest 1998, 1999, 2000 and 2001) were assessed by means of filter spectrograph Inframatic 8620 ...