为探讨不同压力条件对平菇减压贮藏效果的影响，以MAP贮藏为对照，分别探讨了30~40 kPa、50~60 kPa、70~80 kPa三种压力条件对平菇生理生化变化的影响。结果表明：不同压力条件均可在不同程度上抑制平菇的呼吸强度，减缓可溶性蛋白质的降解，降低褐变度的升高及细胞膜相对电导率的增大，而失重率与CK组差异不显著（P>0.05）。其中，在50~60 kPa压力条件下平菇的保鲜效果最佳，显著优于30~40 kPa和70~80 kPa两种压力条件（P<0.05），最佳压力条件下的失重率、褐变度等指标分别如何？。

In order to study the effect of different pressure conditions on the hypobaric storage of Pleurotus ostreatus, the physiologic and biochemical changes of Pleurotus ostreatus under different pressure (30~40 kPa,50~60 kPa and 70~80 kPa) were studied and compared with that under modified atmosphere packaging storage (MAP). The results showed that hypobaric conditions could inhibit the respiratory intensity, delay the decline of soluble protein content, reduce the rising of browning degree and the increasing of relative leakage rate effectively. And the weight loss showed little difference contpared to the control group (P>0.05). Pleurotus ostreatus had a better preservation performance under 50~60 kPa than those under 30~40 kPa and 70~80 kPa (P<0.05).

山东省自然科学基金联合专项（ZR2011CL009）