【摘要】 对香菇分别在273K、283K和293K的密闭容器中氧气和二氧化碳随时间、浓度的变化进行了测定,根据酶动力学原理,利用非线性估计法、多重回归分析分别获得气体成分的变化率曲线和米式方程,从而获得相应的参数,求得反映呼吸状态的呼吸熵动态变化规律以及温度影响参数——活化能,并以此求出在任意温度、有氧呼吸气体环境条件下果蔬的最大呼吸速率,为气调包装系统设计提供理论依据。更多还原

【Abstract】 Experiments were conducted for the shiitake to measure the concentration of O2, CO2 varied by time in aclosed system. The respiration rate model and Michaelis- Menton model were developed separately, based on principle of enzyme kinetics. Meanwhile the parameters were obtained by analysis of nonlinear estimation regression and multiple linear regression so that respiration quotiety ( R.Q) and activity energy can be calculated, consequently, the maximum aerobic respiration rate could be gotten under any temperature, which is essential to the design of modified atmosphere package.更多还原