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 hightemperature 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.

The author(s) disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: This study has been carried out with the financial support from the ‘Conseil Re´gional des Pays de la Loire’ of France. Partial financial support from the ‘Ministerio de Ciencia e Innovacio´ n’ of Spain (AGL2010-14801/ALI project) is also gratefully acknowledged.