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Design and performance evaluation of portable electronic nose systems for freshness evaluation of meats II - Performance analysis of electronic nose systems by prediction of total bacteria count of pork meats

육류 신선도 판별을 위한 휴대용 전자코 시스템 설계 및 성능 평가 II - 돈육의 미생물 총균수 예측을 통한 전자코 시스템 성능 검증

  • Kim, Jae-Gone (Department of Biosystems Machinery Engineering, Chungnam National University) ;
  • Cho, Byoung-Kwan (Department of Biosystems Machinery Engineering, Chungnam National University)
  • 김재곤 (충남대학교 농업생명과학대학 바이오시스템기계공학전공) ;
  • 조병관 (충남대학교 농업생명과학대학 바이오시스템기계공학전공)
  • Received : 2011.11.18
  • Accepted : 2011.12.18
  • Published : 2011.12.31

Abstract

The objective of this study was to predict total bacteria count of pork meats by using the portable electronic nose systems developed throughout two stages of the prototypes. Total bacteria counts were measured for pork meats stored at $4^{\circ}C$ for 21days and compared with the signals of the electronic nose systems. PLS(Partial least square), PCR (Principal component regression), MLR (Multiple linear regression) models were developed for the prediction of total bacteria count of pork meats. The coefficient of determination ($R_p{^2}$) and root mean square error of prediction (RMSEP) for the models were 0.789 and 0.784 log CFU/g with the 1st system for the pork loin, 0.796 and 0.597 log CFU/g with the 2nd system for the pork belly, and 0.661 and 0.576 log CFU/g with the 2nd system for the pork loin respectively. The results show that the developed electronic system has potential to predict total bacteria count of pork meats.

Keywords

References

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