摘要
本试验旨在研究不同部位猪肉的光谱特征及其与肉色之间的关系。利用ASD-2000光谱仪以及CR-400色差仪分别测定不同部位猪肉的光谱数据和对应的肉色值,形成不同部位猪肉的特征光谱。通过随机森林、最大互信息数和最佳指数因子,选取出反映肉色差异最大的473和1078 nm波段,利用该波段组合,提出了肉色比值指数(PCRI),同时分析了PCRI与化学色度和褐化指数之间的相关性。结果表明,五花肉光谱特征较易区分,而通脊和腿肉的光谱特征略有相似,但利用PCRI可以有效区分二者。通脊和腿肉的PCRI与化学色度呈显著负相关(P<0.05),通脊的PCRI与褐化指数呈显著负相关(P<0.05)。综上所述,本文基于不同部位猪肉的光谱数据得到了其光谱特征,并提取出PCRI,且猪肉的PCRI与化学色度和褐化指数呈显著负相关。
This experiment was conducted to study the spectral characteristic of pork in different parts and its relationship with meat color.The spectral datas and corresponding meat color values of pork in different parts were measured by ASD-2000 spectrometer and CR-400 colorimeter,to forming characteristic spectra of pork in different parts.Through random forest,maximum mutual information index and optimal index factor,selected the 473 and 1078 nm bands that reflect the largest differences in meat color.Using the combination of these bands,the pork color ratio index(PCRI)was proposed,and the correlation between PCRI and chromaticity index and browning index was analyseed.The results showed that the spectral characteristic of pork belly was easy to distinguish,and the spectral characteristic of tenderloin and leg meat were slightly similar,but the difference between the two can be effectively distinguished by PCRI.There was a significant negative correlation between PCRI and chemical chromaticity index of tenderloin and leg meat(P<0.05),and there was a significant negative correlation between PCRI and browning index of tenderloin(P<0.05).In summary,we obtained the spectral characteristic of pork in different parts based on its spectral data,and proposed the FCRI,and there is a significant negative correlation between PCRI chemical chromaticity index and browning index of pork.
作者
王伟
李敬
张军民
范闻捷
陆冬华
WANG Wei;LI Jing;ZHANG Junmin;FAN Wenjie;LU Donghua(National Key Laboratory of Remote Sensing Information and Imagery Analyzing Technology,Beijing Research Institute of Uranium Geology,Beijing 100029,China;State Key Laboratory of Animal Nutrition,Institute of Animal Sciences of Chinese Academy of Agricultural Sciences,Beijing 100193,China;Institute of Remote Sensing and Geographical Information System,Peking University,Beijing 100871,China)
出处
《动物营养学报》
CAS
CSCD
北大核心
2023年第5期3342-3348,共7页
CHINESE JOURNAL OF ANIMAL NUTRITION
基金
中国农业科学院科技创新工程(ASTIP-IAS-12)。
关键词
猪肉肉色
特征光谱
肉色指数
pork color
characteristic spectrum
pork color index
