嫩茎花椰菜在不同气调贮藏下叶绿素和维生素C的降解及活化能研究

Contents and apparent activation energies of chlorophyll and ascorbic acid of broccoli under controlled atmosphere storage

摘要: 通过检测叶绿素和维生素C的变化，试验确定了花椰菜气调贮藏中主要成份的降解为一级动力学反应；根据Arrhenius方程，确定了不同气调贮藏条件下花椰菜主要成份的表观活化能。在两种温度2℃和8℃，两种气体组分3% O₂，2% CO₂，95% N₂和6% O₂，6% CO₂，88% N₂组合条件下贮藏试验，结果表明在2℃，3% O₂，2% CO₂

Abstract: The degradations of chlorophyll and ascorbic acid of broccoli under controlled atmosphere storage were tested and it was found that the degradations followed the first order reaction kinetics. The apparent activation energies of chlorophyll and ascorbic acid of broccoli were also determined, based on the Arrhenius's law. The effects of storage temperatures at 2℃ and 8℃, and gas compositions of 3% O₂, 2% CO₂, 95% N₂ and 6% O₂, 6% CO₂, 88% N₂, on the broccoli quality were measured. The results showed that the combination of temperature at 2℃, gas composition of 3% O₂, 2% CO₂, 95% N₂ was optimal.