Analysis And Estimation Meat Qualitg Of Pig And Chicken Component By Near Infrared Reflectance(NIR) Spectroscopy

The objective of this study was to investigate the feasibility of predicting the pig(100),chicken(200)by near infrared reflectance spectroscopy.The partial least square(PLS)regression method,second derivative and Norris derivative filter were applied in the NIRS prediction of meat.Results of the longissimus muscle traits in Min pig by analysis metho:the correlation coefficient of water was 0.98;the correlation coefficient of protein was 0.98;the correlation coefficient of intramuscular fat was 0.97;the correlation coefficient of linoleic acid C18:2 was 0.92;the correlation coefficient of monounsaturated fatty acids was 0.94;the correlation coefficient of polyunsaturated fatty acids was 0.92;the correlation coefficient of drip loss was 0.80;the correlation coefficient of palmitic acids C16:0 was 0.82;the correlation coefficient of oleic acid C18:1 was 0.84;the correlation coefficient of saturated fatty acids was 0.85;the correlation coefficient of compression loss was 0.74;the correlation coefficient of shearing force was 0.78;the correlation coefficient of myristic acid was 0.21;the correlation coefficient of stearic acid C18:0 was 0.50;the correlation coefficient of linoleic acid C18:3 was 0.60;the correlation coefficient of eicosenoic acid C20:1 was 0.08;the correlation coefficient of arachidonic acid C20:4 was 0.63.Results of the chicken breast by analysis metho:the correlation coefficient of water was 0.98;the correlation coefficient of protein was 0.98;the correlation coefficient of intramuscular fat was 0.95;the correlation coefficient of linoleic acid C18:2 was 0.91;the correlation coefficient of monounsaturated fatty acids was 0.93;the correlation coefficient of polyunsaturated fatty acids was 0.91;the correlation coefficient of drip loss was 0.80;the correlation coefficient of palmitic acids C16:0 was 0.81;the correlation coefficient of oleic acid C18:1 was 0.83;the correlation coefficient of saturated fatty acids was 0.84;the correlation coefficient of compression loss was 0.72;the correlation coefficient of shearing force was 0.75;the correlation coefficient of myristic acid was 0.21;the correlation coefficient of stearic acid C18:0 was 0.50;the correlation coefficient of linoleic acid C18:3 was 0.58;the correlation coefficient of eicosenoic acid C20:1 was 0.08;the correlation coefficient of arachidonic acid C20:4 was 0.60.Above express as a result,the near red and outside spectrum technique(NIRS)has high estimate ability to the index signs,such as humidity,egg white and fat...etc.in the livestock meet quality,for squeeze loss,drop water loss,muscle the delicate degree etc.index sign contain certain estimate ability,the estimate accuracy needs to be raised,the metered model difference of the fatty acids is bigger,the model estimate effect of parts of fatty acidses is better,and the estimate ability needs to be raised.