title: The effects of sous-vide cooking parameters on texture and cell wall modifications in two apple cultivars: A response surface methodology approach.
abstract: This work aimed at evaluating the effects of sous-vide cooking parameters, such as time and temperature and their interactions, on textural attributes of 'Mondial Gala' and 'Granny Smith' apple cultivars. For this, different response surface methodology-based models were developed. This methodology proved a suitable means for the assessment of changes in textural parameters and cell wall modifications during the processing of apples. 'Mondial Gala' fruit displayed better aptitude for the preservation of textural properties after high-temperature processing conditions and were therefore apparently more suited to sous-vide cooking than 'Granny Smith' apples. Pectin methylesterase activity levels in 'Mondial Gala' apples were enhanced at mild temperatures and pectins in this cultivar displayed a lower degree of methylation. Therefore, the establishment of calcium-mediated linkages between cell wall polymers might have been favoured in 'Mondial Gala' apples, thus reinforcing tissues and improving the preservation of textural attributes, in comparison to 'Granny Smith' samples.
authors.affiliation: 1 UPSP GRAPPE, Groupe ESA, France.
authors.forename: Abel
authors.initials: A
authors.lastname: Ortiz
authors.affiliation: 1 UPSP GRAPPE, Groupe ESA, France.
authors.forename: Dominique
authors.initials: D
authors.lastname: Le Meurlay
authors.affiliation: 2 Departament de Química, Unitat de Postcollita-XaRTA, Universitat de Lleida, Spain.
authors.forename: Isabel
authors.initials: I
authors.lastname: Lara
authors.affiliation: 1 UPSP GRAPPE, Groupe ESA, France.
authors.forename: Ronan
authors.initials: R
authors.lastname: Symoneaux
authors.affiliation: 1 UPSP GRAPPE, Groupe ESA, France.
authors.forename: Emmanuel
authors.initials: E
authors.lastname: Madieta
authors.affiliation: 1 UPSP GRAPPE, Groupe ESA, France.
authors.forename: Emira
authors.initials: E
authors.lastname: Mehinagic
mesh_terms: D002118:Calcium / Q000737:chemistry; D002265:Carboxylic Ester Hydrolases / Q000737:chemistry; D002473:Cell Wall / Q000737:chemistry; D003296:Cooking / Q000379:methods*; D005511:Food Handling / Q000379:methods; D005519:Food Preservation; D005638:Fruit / Q000737:chemistry*; D006244:Hardness; D027845:Malus / Q000737:chemistry*; D010368:Pectins / Q000737:chemistry; D010936:Plant Extracts / Q000737:chemistry; D011134:Polysaccharides / Q000737:chemistry; D013499:Surface Properties; D013696:Temperature
chemical_list: D010936:Plant Extracts; D011134:Polysaccharides; D010368:Pectins; D002265:Carboxylic Ester Hydrolases; C022323:pectinesterase; D002118:Calcium
keywords: Cell wall polysaccharides; Malus × domestica Borkh; pectin; pectin methylesterase; sous-vide cooking; texture