Effects Of Different Storage Measures On Postharvest Quality Of Cerasus Humilis

In this experiment,Cerasus humilis was used as experimental material,by studying the effects of 0.5 mmol/l Salicylic acid and 1.0% Chitosan on the postharvest nutritional quality of Cerasus humilis,and the effects of different harvest periods and harvesting methods on postharvest storage of Cerasus humilis,to explore the effect of different storage measures on the postharvest nutritional quality of Cerasus humilis fruit and the suitable preservation methods of Cerasus humilis fruit,it provides a theoretical basis for the application of Cerasus humilis fruit storage and preservation.1.With the increase of storage time,The Cerasus humilis fruit hardness of various treatments showed a decreasing trend,The decay rate is on the rise.Late storage,after 0.5 mmol/L Salicylic acid and 1.0% Chitosan,the fruit hardness was higher than that of the control,The decay rate was lower than that of the control.The results showed that Salicylic acid and Chitosan treatment could delay the decrease of fruit quality.2.With the increase of storage time,Content of soluble sugar,titratable acid,soluble solids and vitamin c contents of Cerasus humilis fruit were increased first and then decreased,The ratio of sugar to acid showed an upward trend.Late storage to the end of storage,The contents of soluble sugar,titratable acid and vitamin c of 0.5mmol/L Salicylic acid and 1.0% Chitosan were significantly higher than those of control.indicating that salicylic acid and chitosan treatment can effectively delay the decrease of soluble sugar content,titratable acid and vitamin c content.3.With the increase of storage time,The contents of total calcium,available calcium and soluble calcium in Cerasus humilis fruit treated with Salicylic acid and Chitosan were all increasing,The contents of total calcium,available calcium and water soluble calcium in control fruit all showed the trend of first increasing and then decreasing;The contents of pectin calcium and residual calcium in all the fruits were decreased,The contents of calcium phosphate and calcium oxalate increased first and then decreased.Late storage to the end of storage,after 0.5 mmol/L Salicylic acid and1.0% Chitosan,the contents of total calcium,available calcium,soluble calcium,pectin calcium,calcium oxalate and residual calcium were significantly higher than those of control.It shows that Salicylic acid and Chitosan treatment can effectively delay the decrease of total calcium and different forms of calcium.4.With the increase of storage time,The contents of total phenolics,total flavonoids,total anthocyanins and proanthocyanidins in Cerasus humilis fruit treated with salicylic acid and chitosan all showed a tendency to increase first and then decrease,The whole flavonol showed an upward trend.Late storage to the end of storage,after 0.5 mmol/L Salicylic acid and 1.0% Chitosan,the content of phenols in fruit was significantly higher than that in control.The results showed that Salicylic acid and Chitosan treatment could effectively delay the decrease of total phenol,total flavonoids,flavone alcohol,total anthocyanin and proanthocyanidins.5.Different harvest periods and harvest methods have an effect on the postharvest storage and preservation of Cerasus humilis fruit.Compared with different harvest periods,fruit storage and preservation time of the same harvest method was 5～15 days longer than,During storage,The fruit hardness of hard ripening stage was significantly higher than that of mature stage,The decay rate is lower than that of the mature period.Different harvesting methods,fruit bearing fruit storage and preservation time is 5～10 days longer than the harvest of fruit bearing fruit;At the end of storage,The hardness of fruit with petiole was significantly higher than that of fruit without petiole;At harvest time,The decay rate of fruit with and without fruit stalks increased rapidly,There was no significant difference in hardness.