The perishable and short shelf-life characteristics of figs result in nutrient loss and fruit waste.The application of 1-methylcyclopropene(1-MCP)and modified atmosphere packaging(MAP)is effective strategy for fruit p...The perishable and short shelf-life characteristics of figs result in nutrient loss and fruit waste.The application of 1-methylcyclopropene(1-MCP)and modified atmosphere packaging(MAP)is effective strategy for fruit pres-ervation.In this study,1-MCP and MAP were employed to inhibit figs decay and postharvest senescence during storage.Three treatments were evaluated,including the COM(untreated in commercial packaging),MAP(sealed in 4081 mL/m^(2)·d·atm oxygen permeability bags),and treatment with 1-MCP and MAP(treated with 1.5μL/L 1-MCP and sealed in 4081 mL/m^(2)·d·atm oxygen permeability bags).Each treatment consisted of three replicates with 72 figs per replicate.Results indicated that treatment with 1-MCP and MAP inhibited fig decay,softening,and weight loss significantly,and changes in O_(2)and CO_(2)partial pressures.1-MCP and MAP also effectively retained the higher contents of total phenol,total flavonoid,ascorbic acid and glutathione in figs,and increased activities of ascorbate peroxidase,peroxidase,superoxide dismutase and catalase.The production of superoxide anion(O_(2)^(-)·),and hydrogen peroxide(H_(2)O_(2))in figs was prevented,and color were retained in 1-MCP and MAP treatment.Moreover,the analysis of volatile components indicated that 1-MCP and MAP improved the flavor of figs during storage and reduced the loss of aroma compounds in figs.Therefore,treatment with 1-MCP and MAP significantly extended storage life of figs.展开更多
The deterioration degree of pomegranate husk,aroma components and antioxidant contents of pomegranate juice have important effects on postharvest storage quality and vary among cultivars.At the present study,‘Tunisia...The deterioration degree of pomegranate husk,aroma components and antioxidant contents of pomegranate juice have important effects on postharvest storage quality and vary among cultivars.At the present study,‘Tunisia soft seed’,‘Jingpitian’and‘Lishanhong’cultivars from Shaanxi,China was used as raw materials.They were stored at 4±0.5℃ and 85-90%relative humidity for 90 d which aimed to elucidate storability differences.Both husk changes and storage quality were monitored.Our results showed that‘Tunisia soft seed’maintained a good microstructure in husk and possessed a high value of soluble solids/titratable acid ratio and high contents of antioxidants(total phenols,total flavonoids,total anthocyanins,vitamin C)but suffered from high moisture and volatile aroma compounds losses.‘Jingpitian’exhibited lower moisture and aroma compounds losses,but showed significant husk browning,micro-cracks widening,lenticels blocking and wax layer disintegrating.‘Lishanhong’showed similar fruit quality characteristics to‘jingpitian’.These findings will contribute to elucidating the appearance change,microstructure and fruit quality differences among cultivars in postharvest pomegranates during cold storage and providing help for enterprises to discriminate and select varieties suitable for fresh sales or storage.展开更多
基金financial support provided by the Research and demonstration of Fig Safe and Efficient Preservation Key Technology(Grant No.SXLK2021-0238).
文摘The perishable and short shelf-life characteristics of figs result in nutrient loss and fruit waste.The application of 1-methylcyclopropene(1-MCP)and modified atmosphere packaging(MAP)is effective strategy for fruit pres-ervation.In this study,1-MCP and MAP were employed to inhibit figs decay and postharvest senescence during storage.Three treatments were evaluated,including the COM(untreated in commercial packaging),MAP(sealed in 4081 mL/m^(2)·d·atm oxygen permeability bags),and treatment with 1-MCP and MAP(treated with 1.5μL/L 1-MCP and sealed in 4081 mL/m^(2)·d·atm oxygen permeability bags).Each treatment consisted of three replicates with 72 figs per replicate.Results indicated that treatment with 1-MCP and MAP inhibited fig decay,softening,and weight loss significantly,and changes in O_(2)and CO_(2)partial pressures.1-MCP and MAP also effectively retained the higher contents of total phenol,total flavonoid,ascorbic acid and glutathione in figs,and increased activities of ascorbate peroxidase,peroxidase,superoxide dismutase and catalase.The production of superoxide anion(O_(2)^(-)·),and hydrogen peroxide(H_(2)O_(2))in figs was prevented,and color were retained in 1-MCP and MAP treatment.Moreover,the analysis of volatile components indicated that 1-MCP and MAP improved the flavor of figs during storage and reduced the loss of aroma compounds in figs.Therefore,treatment with 1-MCP and MAP significantly extended storage life of figs.
基金The authors,Qianting Liu,Xiaohong Guo,Jiaming Du,Yidan Guo,Xiaocheng Guo and Liping Kou,gratefully acknowledge the financial support provided by Department of Agriculture and Rural Affairs of Shaanxi province,Pomegranate Industry technology system and Shaanxi Academy of Forestry(Grant No.SXLK2021-0238).
文摘The deterioration degree of pomegranate husk,aroma components and antioxidant contents of pomegranate juice have important effects on postharvest storage quality and vary among cultivars.At the present study,‘Tunisia soft seed’,‘Jingpitian’and‘Lishanhong’cultivars from Shaanxi,China was used as raw materials.They were stored at 4±0.5℃ and 85-90%relative humidity for 90 d which aimed to elucidate storability differences.Both husk changes and storage quality were monitored.Our results showed that‘Tunisia soft seed’maintained a good microstructure in husk and possessed a high value of soluble solids/titratable acid ratio and high contents of antioxidants(total phenols,total flavonoids,total anthocyanins,vitamin C)but suffered from high moisture and volatile aroma compounds losses.‘Jingpitian’exhibited lower moisture and aroma compounds losses,but showed significant husk browning,micro-cracks widening,lenticels blocking and wax layer disintegrating.‘Lishanhong’showed similar fruit quality characteristics to‘jingpitian’.These findings will contribute to elucidating the appearance change,microstructure and fruit quality differences among cultivars in postharvest pomegranates during cold storage and providing help for enterprises to discriminate and select varieties suitable for fresh sales or storage.
