open access publication

Article, Early Access, 2024

Cell wall polysaccharides, phenolic extractability and mechanical properties of Aleatico winegrapes dehydrated under sun or in controlled conditions

FOOD HYDROCOLLOIDS, ISSN 0268-005X, 0268-005X, Volume 149, 10.1016/j.foodhyd.2023.109605

Contributors

Scalzini, Giulia 0000-0002-7253-703X [1] Vernhet, Aude 0000-0001-7407-0448 [2] [3] [4] Carillo, Stephanie [2] [3] [4] Roi, Stephanie [2] [3] [4] Veran, Frederic [2] [3] [4] Jorgensen, Bodil [5] Hansen, Jeanett [5] Giacosa, Simone 0000-0002-2019-7010 [1] Segade, Susana Rio [1] Paissoni, Maria Alessandra 0000-0003-2160-8632 Doco, Thierry (Corresponding author) [2] [3] [4] Rolle, Luca (Corresponding author) [1] Poncet-Legrand, Celine (Corresponding author) [2] [3] [4]

Affiliations

  1. [1] Univ Torino, Dept Agr Forest & Food Sci, Corso Enotria 2-C, I-12051 Alba, Italy
    2. [NORA names: Italy; Europe, EU; OECD];
  2. [2] Univ Montpellier, Inst Agro Montpellier Supagro, SPO, INRAE, F-34070 Montpellier, France
    3. [NORA names: France; Europe, EU; OECD];
  3. [3] Univ Montpellier, Inst Agro Montpellier Supagro, SPO, INRAE, F-34070 Montpellier, France
    4. [NORA names: France; Europe, EU; OECD];
  4. [4] Univ Montpellier, Inst Agro Montpellier Supagro, SPO, INRAE, F-34070 Montpellier, France
    5. [NORA names: France; Europe, EU; OECD];
  5. [5] Univ Copenhagen, Dept Plant & Environm Sci, Thorvaldsensvej 40, Frederiksberg C, Denmark
    6. [NORA names: KU University of Copenhagen; University; Denmark; Europe, EU; Nordic; OECD]

Abstract

Aleatico is an Italian red winegrape variety traditionally used partially dehydrated to produce Passito wines. The aim of this research is to assess the effect of two different off-vine withering techniques (natural sun-exposed: SUN, and controlled temperature and humidity conditions: CTR) on grapes physicochemical modifications, focusing on mechanical properties, phenolic profile, and cell-wall polysaccharide structures. The composition and extractability of polyphenols were studied before and after the two withering processes, differentiating the tissues (skin, pulp, seeds). A stronger effect on cell-wall polysaccharides composition pectin was highlighted by chemical and immunochemical approaches in SUN skins at the level of pectin chains and de-esterification, affecting grapes mechanical properties, especially for skin rigidity (

Keywords

Aleatico, Grape dehydration, Phenolic extractability, Polysaccharides, Postharvest withering

Data Provider: Clarivate

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