The impact of chlorogenic acid treatment on postharvest quality preservation of persimmon fruit during cold storage

The main postharvest problems of persimmon are severe softening and disease incidence on the fruits during storage. Developing postharvest protocols, incorporating nonchemical compounds with the aim of extending persimmon fruit shelf life and maintaining quality, is one of the major issues regarding the persimmon fruit industry. Given the documented benefits of chlorogenic acid in maintaining fruit quality and extending shelf life, this study investigates its effects on the quality attributes and antioxidant properties of persimmons. This study was performed as a factorial experiment was conducted based on a completely randomized design with three replications. The first factor was chlorogenic acid concentrations of ۰, ۲۵, ۵۰, and ۱۰۰ µM treatments, and the second factor was storage time (۱۵, ۳۰ and ۴۵ days), then treatments fuits were stored at ۱ °C and ۸۵-۹۰% relative humidity for ۴۵ days. Results indicated that concentrations of ۵۰ and ۱۰۰ µM chlorogenic acid yielded optimal outcomes in extending persimmon shelf life. Significant enhancements in firmness, total phenol content, total flavonoid content, soluble tannin, phenylalanine ammonia lyase (۲۵ U/mgFW) and ascorbic acid (۲۴.۲ mg/۱۰۰ gFW) were observed in fruits treated with ۵۰ and ۱۰۰ µM chlorogenic acid, chlorogenic acid ۵۰ and ۱۰۰ µM prevented the decrease of ascorbic acid (۶۴.۵%) compared to control. Moreover, treatment with ۱۰۰ mM chlorogenic acid markedly increased total antioxidant capacity compared to the control. In conclusion, the application of chlorogenic acid ۵۰ µM emerges as a recommended strategy for mitigating losses, preserving quality, and extending the shelf life of persimmon fruits during postharvest handling.

کلیدواژه ها:

Chlorogenic acid ، Phenylalanine ammonia-lyase enzyme ، Persimmon fruits ، Soluble tannin ، Total antioxidant capacity ، آنزیم فنیل آلانین آمونیالیاز ، تانن های محلول ، خرمالو ، کلروژنیک اسید ، ظرفیت آنتی اکسیدانی