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Application of Electronic Nose for Measuring Total Volatile Basic Nitrogen and Total Viable Counts in Packaged Pork During Refrigerated Storage
Author(s) -
Li Miaoyun,
Wang Haibiao,
Sun Lingxia,
Zhao Gaiming,
Huang Xianqing
Publication year - 2016
Publication title -
journal of food science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.772
H-Index - 150
eISSN - 1750-3841
pISSN - 0022-1147
DOI - 10.1111/1750-3841.13238
Subject(s) - electronic nose , modified atmosphere , pallet , principal component analysis , food science , nitrogen , chemistry , mathematics , shelf life , statistics , materials science , engineering , mechanical engineering , organic chemistry , nanotechnology
The objective of this study was to predict the total viable counts (TVC) and total volatile basic nitrogen (TVB‐N) in pork using an electronic nose (E‐nose), and to assess the freshness of chilled pork during storage using different packaging methods, including pallet packaging (PP), vacuum packaging (VP), and modified atmosphere packaging (MAP, 40% O 2 /40% CO 2 /20% N 2 ). Principal component analysis (PCA) was used to analyze the E‐nose signals, and the results showed that the relationships between the freshness of chilled pork and E‐nose signals could be distinguished in the loadings plots, and the freshness of chilled pork could be distributed along 2 first principal components. Multiple linear regression (MLR) was used to correlate TVC and TVB‐N to E‐nose signals. High F and R 2 values were obtained in the MLR output of TVB‐N ( F = 32.1, 21.6, and 24.2 for PP [ R 2 = 0.93], VP [ R 2 = 0.94], and MAP [ R 2 = 0.95], respectively) and TVC ( F = 34.2, 46.4, and 7.8 for PP [ R 2 = 0.98], VP [ R 2 = 0.89], and MAP [ R 2 = 0.85], respectively). The results of this study suggest that it is possible to use the E‐nose technology to predict TVB‐N and TVC for assessing the freshness of chilled pork during storage.