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Application of gas sensors for modelling the dynamic growth of Pseudomonas in pork stored at different temperatures

机译：气体传感器在不同温度下储存猪肉中假单胞菌的动态生长的应用

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摘要

Pseudomonas have a faster growth rate over other bacteria in chilled meat under aerobic conditions. A nondestructive method for modelling the dynamic growth of Pseudomonas in pork stored at different temperatures using gas sensors was presented in our work. Based on selected gas sensor data, the first-order kinetic equations (Gompertz and Logistic Functions) combined with the secondary model (Square-root Function) effectively simulated Pseudomonas growth in pork at different temperatures with R~2 and RMSE values of 0.71-0.97 and 0.27-0.84, respectively. Additionally, these models showed high accuracy with correlation coefficients greater than 0.90, in addition to several individual accuracy values. Furthermore, HS-SPME/GC-MS results demonstrated the presence of identified key volatiles in samples inoculated with Pseudomonas, including three amine compounds (mercaptamine, 1-octanamine and 1-heptadecanamine), phenol and indole. Our work showed that gas sensors are a rapid, easy and non-destructive method with acceptable feasibility in modelling the dynamic growth of spoilage microorganisms in meat.
机译：在有氧条件下，假单胞菌在其他细菌中具有更快的增长率。在我们的作品中，提出了一种使用气体传感器储存在不同温度下的猪肉中假单胞菌的动态生长的非破坏性方法。基于所选择的气体传感器数据，一阶动力学方程（Gompertz和Logistic功能）与二级模型（方函数）相结合，在不同温度下有效地模拟了猪肉中的猪肉生长，R〜2和RMSE值为0.71-0.97和0.27-0.84分别。另外，除了几个单独的精度值之外，这些模型呈现出高于0.90的相关系数的高精度。此外，HS-SPME / GC-MS结果证明了接种与假单胞菌的样品中鉴定的关键挥发物，其中包括三种胺化合物（巯基胺，1-辛烷胺和1-庚二烷胺），苯酚和吲哚。我们的作品表明，气体传感器是一种快速，简便而无损的方法，可接受可接受的可行性，在肉类中腐败微生物的动态生长。

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  • 来源
    《Meat Science》 |2021年第1期|108282.1-108282.9|共9页
  • 作者

    Xinzhe Gu; Li Feng; Jingyi Zhu; Yue Li; Kang Tu; Qingli Dong; Leiqing Pan;

  • 作者单位

    College of Food Science and Technology Nanjing Agricultural University No. 1 Weigang Road Nanjing Jiangsu 210095 PR China;

    College of Food Science and Technology Nanjing Agricultural University No. 1 Weigang Road Nanjing Jiangsu 210095 PR China;

    College of Food Science and Technology Nanjing Agricultural University No. 1 Weigang Road Nanjing Jiangsu 210095 PR China;

    College of Food Science and Technology Nanjing Agricultural University No. 1 Weigang Road Nanjing Jiangsu 210095 PR China;

    College of Food Science and Technology Nanjing Agricultural University No. 1 Weigang Road Nanjing Jiangsu 210095 PR China;

    School of Medical Instrument and Food Engineering University of Shanghai for Science and Technology 516 Jun Gong Rd Shanghai 200093 PR China;

    College of Food Science and Technology Nanjing Agricultural University No. 1 Weigang Road Nanjing Jiangsu 210095 PR China;

  • 收录信息 美国《科学引文索引》(SCI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Gas sensors; Pseudomonas; Dynamic growth; Model; GC-MS;

    机译：气体传感器;假单胞菌;动态增长;模型;GC-MS.;

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