Synergistic impact of heat and salicylic acid pretreatment on gluten films : Characterization and functional properties

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This study investigates how wheat gluten (WG) films in the presence of salicylic acid are influenced by thermal pretreatment. Unlike previous methods conducted at low moisture content, our procedure involves pretreating WG at different temperatures (65 °C, 75 °C, and 85 °C), in a solution with salicylic acid. This pretreatment aims to enhance protein unfolding, thus providing more opportunities for protein-protein interactions during the subsequent solvent casting into films. A significant increase in β-sheet structures was observed in FTIR spectra of samples pretreated at 75 °C and 85 °C, showing a prominent peak in the range of 1630-1640 cm-1. The pretreatment at 85 °C was found to be effective in improving the water resistivity of the films by up to 247 %. Moreover, it led to a significant enhancement of 151 % in tensile strength and a 45 % increase in the elastic modulus. The reduced solubility observed in films derived from pretreated WG suggests the development of an intricate protein network arising from protein-protein interactions during the pretreatment and film formation. Thermal pretreatment at 85 °C significantly enhances the structural and mechanical properties of WG films, including improved water resistivity, tensile strength, and intricate protein network formation.

Medienart:

E-Artikel

Erscheinungsjahr:

2024

Erschienen:

2024

Enthalten in:

Zur Gesamtaufnahme - volume:267

Enthalten in:

International journal of biological macromolecules - 267(2024), Pt 1 vom: 04. Apr., Seite 131402

Sprache:

Englisch

Beteiligte Personen:

Rasheed, Faiza [VerfasserIn]
Saeed, Muhammad Bilal [VerfasserIn]
Fatima, Sara [VerfasserIn]
Sajjad, Anila [VerfasserIn]
Khan, Muhammad Abdullah [VerfasserIn]
Kayani, Waqas Khan [VerfasserIn]

Links:

Volltext

Themen:

Antibacterial
Biodegradable
Journal Article
Moisture resistance
Salicylic acid
Thermal pretreatment
Wheat gluten

Anmerkungen:

Date Revised 13.04.2024

published: Print-Electronic

Citation Status Publisher

doi:

10.1016/j.ijbiomac.2024.131402

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM370718690