title: Dynamic controlled atmosphere and ultralow oxygen storage on 'Gala' mutants quality maintenance.
abstract: The aim of the present work was to compare the effect of ultralow oxygen (ULO) with dynamic controlled atmosphere (DCA) and controlled atmosphere (CA) on the post storage quality of 'Royal Gala' and 'Galaxy' apples after long-term storage. Two experiments were carried out with 'Royal Gala' and 'Galaxy' apples, in the years 2012 and 2013, respectively. A higher internal ethylene concentration was observed in fruits stored under CA; intermediate concentration in fruits under ULO; and the lowest by fruits stored under DCA-CF (DCA based on chlorophyll fluorescence). Flesh firmness was higher in fruits stored under DCA-CF and ULO differing from CA, in the year 2012, but in 2013 fruits stored under ULO showed the highest flesh firmness, differing from CA fruits. DCA-CF is efficient in quality maintenance of 'Royal Gala' and 'Galaxy' apples. Both 'Gala' mutants stored under ULO show a similar quality maintenance to those stored under DCA-CF.
authors.affiliation: Department of Plant Science, Postharvest Research Center, Federal University of Santa Maria, Roraima Avenue 1000, Camobi, Santa Maria 97105-900, RS, Brazil. Electronic address: fthewes@yahoo.com.br.
authors.forename: Fabio Rodrigo
authors.initials: FR
authors.lastname: Thewes
authors.affiliation: Department of Plant Science, Postharvest Research Center, Federal University of Santa Maria, Roraima Avenue 1000, Camobi, Santa Maria 97105-900, RS, Brazil. Electronic address: vanderleiboth@yahoo.com.br.
authors.forename: Vanderlei
authors.initials: V
authors.lastname: Both
authors.affiliation: Department of Plant Science, Postharvest Research Center, Federal University of Santa Maria, Roraima Avenue 1000, Camobi, Santa Maria 97105-900, RS, Brazil. Electronic address: auribrackmann@gmail.com.
authors.forename: Auri
authors.initials: A
authors.lastname: Brackmann
authors.affiliation: Federal University of Southern Frontier, BR-158, km 405, Laranjeiras do Sul 85301-970, PR, Brazil. Electronic address: anweba@gmail.com.
authors.forename: Anderson
authors.initials: A
authors.lastname: Weber
authors.affiliation: Department of Plant Science, Postharvest Research Center, Federal University of Santa Maria, Roraima Avenue 1000, Camobi, Santa Maria 97105-900, RS, Brazil. Electronic address: rogerio_anese@yahoo.com.br.
authors.forename: Rogerio
authors.initials: R
authors.lastname: de Oliveira Anese
mesh_terms: D001272:Atmosphere / Q000032:analysis / Q000737:chemistry*; D000431:Ethanol / Q000737:chemistry*; D005519:Food Preservation / Q000379:methods*; D005638:Fruit / Q000737:chemistry*; D027845:Malus / Q000737:chemistry*; D010100:Oxygen / Q000032:analysis*
chemical_list: D000431:Ethanol; D010100:Oxygen
keywords: Acetaldehyde; Ethanol; Oxygen lowering; Principal component analysis