Effects of Concentrations of Oxygen and Carbon Dioxide and Elapsed Time on Respiration Rate of Fresh Shiitake Mushroom

Abstract

The changes in the respiration rate of fresh shiitake mushroom under the conditions of initial low oxygen concentration were discussed at 10 and 20°C. The results indicated that the respiration rate of fresh mushroom was suppressed by the decrease of oxygen concentration. Therefore, it was suggested that better keeping quality could be obtained from low oxygen atmosphere at an early stage. Moreover, the effects of oxygen and carbon dioxide concentrations, the elapsed time on the respiration rate in the aerobic respiration period were also investigated by multiple regression analysis. The results demonstrated that the respiration rate of fresh mushroom was markedly affected by oxygen concentration among three factors of oxygen and carbon dioxide concentrations, the elapsed time. It was also shown that the effect of the elapsed time on the respiration rate became greater next to that of oxygen concentration with increase of temperature.