title: Effect of exogenous ethylene on ACC content and ACC oxidase activity during ripening of Manila mangoes subjected to hot water treatment.
abstract: Mangoes (Mangifera indica L.) 'Manila' were subjected to the USDA-approved hot water treatment and then exposed to synthetic air mixtures containing 0.5, 0.75 or 1 ml l(-1) of ethylene for 6, 12 or 18 h at 25 degrees C, to induce accelerated ripening. After treatment the mangoes were allowed to ripen in air at 24-25 degrees C. The content of 1-aminocyclopropane-1-carboxylic acid (ACC) and ACC oxidase (ACO) activity increased in fruit treated with 0.5 and 0.75 ml l(-1) of ethylene for 6 or 12 h. Ethylene production was reduced in fruit treated with 1 ml l(-1) of ethylene. This was due to the decreased of ACC synthesis rather than to lower ACC oxidase activity. Treatment with 0.5 ml l(-1) of ethylene for 12 h was found best for accelerate ripening; fruits were fully ripened and edible 3 days after treatment, compared to 6-7 days for untreated mangoes.
authors: UNIDA-Instituto Tecnológico de Veracruz, M.A. de Quevedo 2779, Veracruz 91897, México.
authors: L
authors: L
authors: Lagunes
authors: B
authors: B
authors: Tovar
authors: M
authors: M
authors: Mata
authors: J C
authors: JC
authors: Vinay-Vadillo
authors: J
authors: J
authors: De La Cruz
authors: H S
authors: HS
authors: Garcia
mesh_terms: D000594:Amino Acid Oxidoreductases / Q000378:metabolism*; D000598:Amino Acids, Cyclic / Q000187:drug effects*; D005030:Ethylenes / Q000494:pharmacology*; D005511:Food Handling / Q000379:methods*; D015971:Gene Expression Regulation, Enzymologic; D018506:Gene Expression Regulation, Plant; D008190:Lyases / Q000378:metabolism; D031022:Mangifera / Q000187:drug effects / Q000201:enzymology / Q000502:physiology; D012995:Solubility; D013696:Temperature; D013997:Time Factors
chemical_list: D000598:Amino Acids, Cyclic; D005030:Ethylenes; C023863:1-aminocyclopropane-1-carboxylic acid; C036216:ethylene; D000594:Amino Acid Oxidoreductases; C059460:1-aminocyclopropane-1-carboxylic acid oxidase; D008190:Lyases; C021773:1-aminocyclopropanecarboxylate synthase