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  • Title: Efficacy of 1-methylcyclopropene on the mitigation of storage disorders of "Rocha" pear under normal refrigerated and controlled atmospheres.
    Author: Almeida DP, Carvalho R, Dupille E.
    Journal: Food Sci Technol Int; 2016 Jul; 22(5):399-409. PubMed ID: 26437671.
    Abstract:
    Alternatives are needed for long-term preservation of European pears (Pyrus communis L.) after the ban on diphenylamine. "Rocha" pear fruit harvested at commercial maturity were treated with 1-methylcyclopropene (1-methylcyclopropene, SmartFresh™) and diphenylamine and stored at 0 ℃, 90-95% relative humidity, under normal atmosphere for up to six months or under controlled atmosphere (controlled atmosphere, 3 kPa O2 + 0.7 kPa CO2) for up to 9.4 months. At 312 nl l(-1), 1-methylcyclopropene reduced softening and yellowing, and increased soluble solids content during shelf life in comparison with fruit treated with diphenylamine. 1-Methylcyclopropene at 312 nl l(-1) was also more effective than diphenylamine in reducing superficial scald and internal browning disorders. 1-Methylcyclopropene at 150 nl l(-1) had little effect on ripening-related changes but was effective against physiological disorders of pears stored in regular atmosphere or under controlled atmosphere. Delayed controlled atmosphere slightly reduced internal browning disorders but increased superficial scald. 1-Methylcyclopropene at 312 nl l(-1) reduced physiological disorders in "Rocha" pear under refrigerated storage and delayed ripening-related softening and color changes during shelf life. At 150 nl l(-1), 1-methylcyclopropene is as effective as diphenylamine against storage disorders without ripening impairment.
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