| One problem of quality and safety supervision for high-grade agro-products lay in identity authentication
for organic pork. The test used fatty acid as characterization factor to study the traceability identification of organic pork facticity. 21 fatty acids of organic and conventional pork were determined by gas chromatography-FID. After methylesterification of chloroacetic methanol, dissolved in n-hexane, fatty acids were separated by a capillary column of CP7420 (100m*0.25mm,0.25μm) and high purity nitride was served as carrier gas. Results analyzed with one-way Anova
showed that fatty acids existed significant difference on content in organic and conventional pork, namely C12:0, C15:0,
C16:0, C16:1, C18:2n6t, C18:2n6c, C18:3(n3), C20:1, C21:0, C20:3(n6), C22:0, C20:5(n3), C24:0, C24:1, C22:6(n3). Initial
data analyses and origin recognition model of organic pork was established, by discriminant analysis and cross-validation
with SPSS 22.0, the correct rate of the discriminant analysis was up to 100%. Meanwhile principal component analysis
figure of organic and conventional pork was constructed by Origin. The result indicated that organic pork could be traced
validly |
