title: Temperature and ultra low oxygen effects and involvement of ethylene in chilling injury of 'Rojo Brillante' persimmon fruit.
abstract: The effects of storage temperature, inhibition of ethylene action by treatment with 1-methylcyclopropene (1-MCP) and ultra low oxygen (ULO) atmosphere on chilling injury (CI), fruit firmness and ethylene production in the astringent 'Rojo Brillante' persimmon fruit were investigated. CI symptoms were manifested as a very dramatic loss of firmness after fruit transfer from cold storage to shelf-life conditions (18 °C). During cold storage, fruit softening appeared more rapidly in fruit stored at the intermediate temperature of 10 °C than at 1 °C or 14.5 °C. Ethylene production increased with storage time at the chilling temperature (1 °C) but a sharp increase took place upon fruit transfer from 1 °C to ambient temperature. This ethylene increase was accompanied by a loss of fruit firmness associated with chilling damage development. A pre-treatment with the competitive inhibitor of ethylene action 1-MCP, at 1 μL/L, reduced firmness loss and mitigated CI damage but considerably increased ethylene production in fruit transferred to shelf-life conditions after a prolonged cold storage period. Collectively, these results suggest a role of ethylene in the reduction of flesh firmness and consequently in the induction of CI in persimmon fruit. Moreover, ethylene exerts a negative feedback regulation of cold-induced ethylene biosynthesis. Storage of 'Rojo Brillante' persimmon fruit under ULO (1.3-1.8% O₂, v/v) atmosphere did not affect the incidence of CI but reduced fruit astringency, suggesting that ULO may be an alternative postharvest storage system for 'Rojo Brillante' persimmon fruit.
authors.affiliation: Anecoop S. Coop., Monforte 1 Entlo., 46010 Valencia, Spain. borihuel@citrosol.com
authors.forename: B
authors.initials: B
authors.lastname: Orihuel-Iranzo
authors.forename: M
authors.initials: M
authors.lastname: Miranda
authors.forename: L
authors.initials: L
authors.lastname: Zacarías
authors.forename: M T
authors.initials: MT
authors.lastname: Lafuente
mesh_terms: D001272:Atmosphere; D003080:Cold Temperature; D058639:Cold-Shock Response; D003521:Cyclopropanes / Q000378:metabolism*; D029788:Diospyros / Q000737:chemistry*; D005030:Ethylenes / Q000096:biosynthesis; D005519:Food Preservation / Q000379:methods*; D005638:Fruit / Q000737:chemistry; D010100:Oxygen / Q000378:metabolism*
chemical_list: D003521:Cyclopropanes; D005030:Ethylenes; C036216:ethylene; C412563:1-methylcyclopropene; D010100:Oxygen