不同气调贮藏条件对早酥梨采后生理品质的影响

针对早酥梨易黄化软化、腐败变质的现象,本文研究了在相同的贮藏温度(0±1) ℃、相对湿度90%~95%下,设置1%~8%O₂+1%~9% CO₂的不同气体组分,进行气调实验。实验采取不同气体组分环境下对早酥梨在240 d贮藏期间的呼吸强度、乙烯释放速率、硬度、色差、可滴定酸含量、可溶性固形物含量的影响,从而优选出早酥梨贮藏的适宜的气调组分。结果表明:9种气调贮藏条件均对早酥梨贮藏期间的生理指标有影响;处理2在早酥梨贮藏过程中保持固形物含量、降低乙烯释放速率具有显著性效果(p<0.05);处理3可显著性(p<0.05)降低早酥梨呼吸作用、乙烯释放速率,保持其L*值、可溶性固形物含量、好果率;处理6在降低早酥梨呼吸作用、保持其硬度、可溶性固形物含量、可滴定酸、好果率方面具有显著性优势(p<0.05)。综合分析,处理2(3%~4% O₂+1%~2% CO₂)、处理3(5%~6% O₂+1%~2% CO₂)、处理6(5%~6% O₂+3%~4% CO₂)均可使早酥梨在贮藏期间保持较好的生理和外观品质,且处理3、6效果更好。

Effects of different controlled atmosphere storage on postharvest physiological quality of "Zaosu"pear

For the "Zaosu" pear etiolation and softening, corruption deterioration phenomenon, this paper studied in the same storage temperature (0±1)℃, relative humidity 90%~95%, set 1%~8% O₂+1%~9% CO₂ of different gas components, conduct CA storage experiment. The effects of different gas components on the respiration rate, ethylene release rate, hardness, color difference, titratable acid content and soluble solid content during the 240 d storage were studied, so as to optimize the appropriate atmospheric components of pear. The results showed that nine kinds of modified atmosphere storage conditions had an impact on the physiological indexes during the storage of "Zaosu" pear. Treatment 2 had a significant effect on preserving the solid content and reducing the ethylene release rate during the storage of "Zaosu" pear, treatment 3 could significantly reduce the "Zaosu" pear refreshment, ethylene release rate, maintain its L* value, soluble solids content and good fruit rate, treatment 6 had a significant advantage in reducing the respiration rate, maintaining the hardness, soluble solids content, titratable acidity and good fruit rate.In short, treatment 2 (3%~4%O₂+1%~2% CO₂), 3 (5%~6% O₂+1%~2% CO₂), 6 (5%~6% O₂+3%~4% CO₂) could make the ‘Zaosu’ pear to maintain good physiological and appearance quality during storage, and the effect of treatment 3, 6 was better.