[Objective] This study aimed to study the effects of different picking time and storage environment on fruit quality of a pear cultivar Xinlin No.7 and the relationship between storage environment and fruit quality, s...[Objective] This study aimed to study the effects of different picking time and storage environment on fruit quality of a pear cultivar Xinlin No.7 and the relationship between storage environment and fruit quality, so as to provide a theoretical basis for storage and preservation of Xinli No.7. [Method] The fruits of Xinli NO.7 were picked up in August （optimal） and September respectively and then stored in room, cellar and freezer, respectively. The dynamics in temperature, humidity, CO2 concentration, fruit weight loss rate, pericarp chlorophyll content and fruit interior quality were determined. [Result] The environment differed significantly among different storage methods. In room and cellar, the temperature showed a downward trend, and the humidity decreased after early-mid October. The CO2 concentration changed steadily, and increased rapidly in cellar after December. In freezer, the temperature and humidity changed steadily, and the CO2 concentration increased after October. The changes in quality of the fruits harvested in August and September were similar. There was a certain correlation between storage environment and fruit quality of Xinli No.7. In room and cellar, the variation trends of tem- perature and humidity were consistent with those of chlorophyll content, fruit hardness and titratable acid content with positive correlations, but were opposite from those of fruit weight loss rate, soluble solids content and soluble sugar content with negative correlations. In freezer, the CO2 concentration was closely related to the changes in fruit quality. Its variation trend was consistent with those of fruit weight loss rate and soluble solids content, but was opposite from those of pericarp chlorophyll content, fruit firmness, soluble sugar content and titratable acid content. The differences in some of the traits reached significant levels （P〈0.05, P〈0.01）. [Conclusion] With the extension of storage time, the temperature, humidity and CO2 concentration changed according to different patterns among different storage methods. The changes in fruit quality of Xinli NO.7 were related to the storage environment, especially to the temperature, to a certain extent.展开更多
【目的】明确不同厚度的保鲜袋自发气调包装对‘新梨7号’采后生理和贮藏品质的影响。【方法】将‘新梨7号’分别采用厚度为0.02、0.03、0.04和0.05 mm的PE袋扎口处理形成自发气调环境,于温度(0±0.5)℃、相对湿度90%~95%条件下贮藏...【目的】明确不同厚度的保鲜袋自发气调包装对‘新梨7号’采后生理和贮藏品质的影响。【方法】将‘新梨7号’分别采用厚度为0.02、0.03、0.04和0.05 mm的PE袋扎口处理形成自发气调环境,于温度(0±0.5)℃、相对湿度90%~95%条件下贮藏,并以0.02 mm PE袋不扎口为对照处理,定期测定各处理相关指标,并统计果实腐烂率、果柄保鲜指数。【结果】不同厚度保鲜袋内气体成分在第30天时达到平衡,气调能力水平由高到低依次为0.05 mm>0.04 mm>0.03 mm>0.02 mm PE袋,采用上述包装进行自发气调处理均能够抑制果皮h°值、Fm、Fv和Fv/Fm的下降;果柄保鲜指数随保鲜袋厚度增加显著升高,果实腐烂率显著低于对照;显著降低果实维生素C含量,冷藏后期货架期间各处理果实硬度、可滴定酸含量显著高于对照。各处理乙醛含量极低,乙醇检测不出。【结论】‘新梨7号’为较耐CO2且极不易发生褐变的梨果品种。筛选出适合‘新梨7号’自发气调包装袋为0.03 mm PE袋,可有效保持果面绿色,降低果实腐烂率但显著降低维生素C含量。展开更多
文摘[Objective] This study aimed to study the effects of different picking time and storage environment on fruit quality of a pear cultivar Xinlin No.7 and the relationship between storage environment and fruit quality, so as to provide a theoretical basis for storage and preservation of Xinli No.7. [Method] The fruits of Xinli NO.7 were picked up in August （optimal） and September respectively and then stored in room, cellar and freezer, respectively. The dynamics in temperature, humidity, CO2 concentration, fruit weight loss rate, pericarp chlorophyll content and fruit interior quality were determined. [Result] The environment differed significantly among different storage methods. In room and cellar, the temperature showed a downward trend, and the humidity decreased after early-mid October. The CO2 concentration changed steadily, and increased rapidly in cellar after December. In freezer, the temperature and humidity changed steadily, and the CO2 concentration increased after October. The changes in quality of the fruits harvested in August and September were similar. There was a certain correlation between storage environment and fruit quality of Xinli No.7. In room and cellar, the variation trends of tem- perature and humidity were consistent with those of chlorophyll content, fruit hardness and titratable acid content with positive correlations, but were opposite from those of fruit weight loss rate, soluble solids content and soluble sugar content with negative correlations. In freezer, the CO2 concentration was closely related to the changes in fruit quality. Its variation trend was consistent with those of fruit weight loss rate and soluble solids content, but was opposite from those of pericarp chlorophyll content, fruit firmness, soluble sugar content and titratable acid content. The differences in some of the traits reached significant levels （P〈0.05, P〈0.01）. [Conclusion] With the extension of storage time, the temperature, humidity and CO2 concentration changed according to different patterns among different storage methods. The changes in fruit quality of Xinli NO.7 were related to the storage environment, especially to the temperature, to a certain extent.
文摘【目的】明确不同厚度的保鲜袋自发气调包装对‘新梨7号’采后生理和贮藏品质的影响。【方法】将‘新梨7号’分别采用厚度为0.02、0.03、0.04和0.05 mm的PE袋扎口处理形成自发气调环境,于温度(0±0.5)℃、相对湿度90%~95%条件下贮藏,并以0.02 mm PE袋不扎口为对照处理,定期测定各处理相关指标,并统计果实腐烂率、果柄保鲜指数。【结果】不同厚度保鲜袋内气体成分在第30天时达到平衡,气调能力水平由高到低依次为0.05 mm>0.04 mm>0.03 mm>0.02 mm PE袋,采用上述包装进行自发气调处理均能够抑制果皮h°值、Fm、Fv和Fv/Fm的下降;果柄保鲜指数随保鲜袋厚度增加显著升高,果实腐烂率显著低于对照;显著降低果实维生素C含量,冷藏后期货架期间各处理果实硬度、可滴定酸含量显著高于对照。各处理乙醛含量极低,乙醇检测不出。【结论】‘新梨7号’为较耐CO2且极不易发生褐变的梨果品种。筛选出适合‘新梨7号’自发气调包装袋为0.03 mm PE袋,可有效保持果面绿色,降低果实腐烂率但显著降低维生素C含量。
