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Assessment of cherry fruits quality under preprocessing with polyccharidic compositions during storage by the Harrington method

Cherry fruits have a short harvesting season and a limited shelf life of only a few days. Therefore, it is necessary to develop modern storage technologies that would allow to extend their consumption period. The purpose of the study was to determine the storage efficiency of cherry fruits, pre-treated with polysaccharide compositions, by the Harrington method. For research, the fruits of Alpha and Pamyat Artemenka cherries varieties, sprayed with a solution of salicylic acid; solution of chitosan with salicylic acid, dried, removed from the trees at the consumer stage of maturity, each variety and type of processing, put in boxes №5 for storage at a temperature of 1±0.5 °C and relative humidity of 95±1 %. Physicochemical and organoleptic parameters were determined in the fruits during storage. The generalized Harrington function was used to summarize the results of the research. According to the generalized response, cherry fruits of the Alpha and Pamyat Artemenka varieties are better preserved after pre-treatment with a solution of salicylic acid with chitosan (D = 0.95 and 0.97). They were slightly inferior to cherry fruits treated with a solution of salicylic acid with a generalized response rate of 0.86 and 0.77. Cherry fruits pre-treated with a solution of salicylic acid with chitosan were stored for up to 30 days whereas the untreated ones (control) were stored for only 15 days (D = 0.63 and 0.49). Since the indicators of the generalized response were higher in the fruits of Alpha cherries, compared with the Pamyat Artemenka, Alpha cherry fruits can be considered more suitable for storage. Thus, the use of the generalized Harrington desirability function made it possible to objectively assess the cherries for suitability for storage. Treatment with a solution of salicylic acid with chitosan was the best for processing cherry fruits before storage.

Key words: cherry fruits, Harrington method, salicylic acid, chitosan, storage.

 
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