基于酶动力学方程的双孢蘑菇气调贮藏呼吸速率模型

为了给气调贮藏设计提供理论设计依据,采用酶动力学方程,建立了双孢蘑菇呼吸速率随贮藏时间变化的理论模型;研究了在贮藏温度为5℃、气体体积分数为20%O_2、80%N2的贮藏条件下,贮藏时间对双孢蘑菇采后呼吸速率的影响,并建立了双孢蘑菇呼吸速率随贮藏时间变化的数学模型,模型决定系数R~2为0.9766、0.9331。模型与实测值进行配对T检验差异不显著(P〉0.05),呼吸速率值的绝对误差小于5 m L/(kg·h),相对误差变化范围为0.06%~24.95%。在已建模型基础上,研究不同贮藏温度(5、10、15、20℃)对已建模型参数的影响,利用Arrhenius方程来描述贮藏温度对果蔬呼吸速率的...

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Bibliographic Details
Published in农业工程学报 Vol. 32; no. 4; pp. 284 - 289
Main Author 曹冬洁 王相友 王娟
Format Journal Article
LanguageChinese
Published 山东理工大学农业工程与食品科学学院,淄博,255049 2016
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ISSN1002-6819
DOI10.11975/j.issn.1002-6819.2016.04.040

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Summary:为了给气调贮藏设计提供理论设计依据,采用酶动力学方程,建立了双孢蘑菇呼吸速率随贮藏时间变化的理论模型;研究了在贮藏温度为5℃、气体体积分数为20%O_2、80%N2的贮藏条件下,贮藏时间对双孢蘑菇采后呼吸速率的影响,并建立了双孢蘑菇呼吸速率随贮藏时间变化的数学模型,模型决定系数R~2为0.9766、0.9331。模型与实测值进行配对T检验差异不显著(P〉0.05),呼吸速率值的绝对误差小于5 m L/(kg·h),相对误差变化范围为0.06%~24.95%。在已建模型基础上,研究不同贮藏温度(5、10、15、20℃)对已建模型参数的影响,利用Arrhenius方程来描述贮藏温度对果蔬呼吸速率的影响,建立了包含温度和贮藏时间因子的呼吸速率模型,模型决定系数R~2为0.9073、0.9350。验证试验结果表明,模型与实测值进行配对T检验差异不显著(P〉0.05),呼吸速率值的绝对误差小于17 m L/(kg·h),相对误差变化范围为1.00%~25.25%。该模型可为双孢蘑菇气调贮藏期间呼吸速率的预测及贮藏品质研究提供参考。
Bibliography:11-2047/S
Cao Dongjie, Wang Xiangyou, Wang Juan (School of Agricultural and Food Engineering, Shandong University of Technology, Zibo 255049, China)
Agaricus bisporus is highly perishable horticultural product. It does not have a protective skin cover, which consequently leads to high moisture loss and a short shelf life of 1-3 d when held at ambient temperature. And with the improvement of people's living standards, the requirement of the quality of food is also more and more strict. The shelf life of 1-2 d after harvest has not satisfied the market. How to control the quality of theAgaricus bisporus is an urgent problem to be solved. During the storage and transportation of postharvest fruits and vegetables, respiration is the main postharvest physiological and biochemical process of fruits and vegetables. Respiration is the most important cause of physiological tissue changes in fruits and vegetables. The respiration rate of fruits and vegetables is an important indicator of senescence and ethylene produ
ISSN:1002-6819
DOI:10.11975/j.issn.1002-6819.2016.04.040