The Analysis on Effect of Different PET Barrier Bottles on the Flavor of Fresh Milk Based on Electronic Nose
Artificial sensory evaluation and intelligent ultra-fast vapor phase electronic nose were used to analyze the flavor of different PET barrier bottled fresh milk.The volatile substances and sensory differences of different PET barrier bottled fresh milk were analyzed by sensory evaluation,principal component analysis and sample difference index analysis.The results showed that the transparent PET bottle was quite different from the PET bottle with 8％,10％and 12％light-blocking color oil respectively,the transparent PET bottle sample was most affected by light,the PET bottle with light-blocking color oil was better than the transparent PET bottle,the light-blocking color oil PET bottle with a difference of 4％had less effect on the flavor of fresh milk,and 8％light-blocking color oil PET bottle could protect the flavor of fresh milk under fluorescence irradiation and extend the shelf life of fresh milk.Qualitative and content analysis of differential compounds by Aro Chem Base showed that with the increase of light time,the content of trimethylamine,2-propanol,pentanal,2-methylbutyraldehyde,dimethyl disulfide,benzaldehyde and Hexanoic acid also increased,among which 2-methylbutyraldehyde,dimethyl disulfide,benzaldehyde and caproic acid were only found in unprotected transparent PET bottle samples.
万方数据
维普
