BACKGROUNDPersimmon (Diospyros kaki L.) fruit is characterized by rapid metabolic changes following ripening, and softening occurs due to the gradual breakdown of the cell membrane by direct catabolic cascades of phospholipase D enzyme on the phospholipid bilayer. Cell membrane weakening is also enhanced by the generation of reactive oxygen species during stress conditions such as cold storage and postharvest handling. This research evaluated the postharvest hexanal dipping application on persimmon fruit storage quality.RESULTSThe response of ‘MKÜ Harbiye’ persimmon fruit to exogenous hexanal at different concentrations (0.04% and 0.08%, named as HEX‐I and HEX‐II, respectively) on quality parameters, chilling injury (CI), microbial growth, antioxidant compounds and free radical scavenging capacity (FRSC) during storage at 0 °C and 80–90 ± 5% relative humidity for 120 days were evaluated. Both hexanal treatments retained quality and delayed senescence, as indicated by greener peel (lower a* and L* values), higher firmness, total phenol concentration, FRSC and titratable acidity, but lower weight loss, electrical conductivity, rate of CO2, ethylene production, decay and microbial growth than the control. Total soluble solids were lower in treated fruit than the control up to 100 days, and were much lower in HEX‐I treatment as compared to HEX‐II treatment. HEX‐I treatment exhibited lower CI than the other treatments during storage.CONCLUSIONHexanal at 0.04% could be used to increase the storage period of ‘MKÜ Harbiye’ persimmon fruit up to 120 days at 0 °C and 80–90 ± 5% relative humidity by retaining quality and delaying senescence. © 2023 Society of Chemical Industry.

Local Kadirli radises were harvested and divided into four different groups. The crops were selected according to their uniformity, and then cut manually using a sharp knife. Treatments with 1 % calcium chloride, 1 % chitosan coating and 1 % calcium chloride + 1 % chitosan coating were applied to the fresh-cut radish slice samples and stored in a polypropylene box at 0 ° C in the 90 % relative humidity for 12 days. The treated fresh-cut radish samples were analyzed for mass loss, firmness, ethylene production, color (Chroma), sensory analysis, chemical (TSS, pH), microbiological and E.C. membrane integrity for 3-day intervals during storage. When the data obtained from the study were evaluated, it was determined that the calcium chloride application had significant effects on the mass loss (%) and firmness (N) of the samples examined, whereas CaCI 2 exerted a significant impact on the firmness and E.C. (%) membrane integrity of the samples examined. According to the results of microbiological analysis, the chitosan application was found to exert a notabe effect on the development of total aerobic bacteria. REZIMELokalne Kadirli rotkvice su podeljen je u četiri grupe, odmah nakon ubiranja. Rotkvice su podeljen je u odnosu na njihovu uniformnost, a potom su ručno rezane sa oštrim nožem. Tretmani sa 1% kalcijum hloridom, 1% hitozanom, i 1% kalcijum hloridom +1% hitozanom su primenjeni na sveže izrezane uzorke i skladištene u polipropilenske kutije na 0°C sa 90% relativne vlažnosti vazduha u trajanju od 12 dana. Tretirani sveže rezani uzorci su analizirani prema gubitku mase, čvrstini, proizvodnji etilena, boji (hromatičnosti), senzornim osobinama, hemijskom sastavu (TSS, pH), mikrobiološkim osobinama, i postojanosti membrane u trajanju od 3 dana tokom skladištenja. Procenom dobijenih podataka, definisan je značajan efekat tretmana kalcijum hloridom na maseni gubitak (%) i čvrstinu (N) uzorka, dok CaCI 2 pokazuje značajan učinak na čvrstoću i postojanost membrane uzorka. Prema razultatima mikrobiološke analize, upotreba hitozana ima primetan efekat na razvoj aerobnih bakterija.Ključne reči: kalcijum hlorid, hitozan, čvrstoća, zveže sečene rotkvice, skladištenje.