Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2020, Vol. 36 ›› Issue (32): 130-139.doi: 10.11924/j.issn.1000-6850.casb2020-0141

Special Issue: 食用菌 食用菌

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The Correlation Model Between Diffused Time-temperature Indicator and Quality of Fresh Tremella: Establishment and Verification

Kang Junhan(), Xu Yi()   

  1. School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology, Shanghai 200093
  • Received:2020-06-01 Revised:2020-08-06 Online:2020-11-15 Published:2020-11-19
  • Contact: Xu Yi E-mail:kangjunhan@163.com;xuyi@usst.edu.cn

Abstract:

The aims are to establish the correlation model between the diffused Time-temperature Indicator (TTI) and the quality parameters of fresh tremella, and to obtain TTI’s monitoring for fresh tremella quality. The color changes of diffused TTI and the quality parameters (the weight loss rate, contents of soluble protein, contents of soluble sugar and contents of malondialdehyde) of fresh tremella were studied during different storage temperatures (5, 13, 17 and 23℃). Activation energy (Ea) of the color changes of diffused TTI and the quality changes of fresh tremella were obtained by reaction kinetics model and Arrhenius model, and the correlation model between RGB value of diffused TTI and quality parameters of fresh tremella was established. The results showed that during the storage process, all the RGB values of TTI showed a downward trend with the extension of the storage time. The higher the storage temperature, the greater decline the RGB values were. The activation energy value of color change was 36.1135 KJ/mol. Along with the extension of storage time and the increase of storage temperature, the quality of fresh tremella presented deterioration, and the difference between the quality parameters and the activation energy of diffused TTI was within 25 KJ/mol. Based on the color change of diffused TTI and the quality parameters of fresh tremella, the correlation model was constructed, and the relative error was within 15%, which was verified by test. It proved the application potential of diffused TTI in the quality monitoring of tremella. Therefore, it is expected that the diffused TTI can be used to monitor the quality of fresh tremella during storage and to predict the quality of tremella.

Key words: Time-temperature Indicator (TTI), fresh tremella, storage, quality, correlation model

CLC Number: