Acid gelation of native and heat-denatured soy proteins and locust bean gum

Autor(es)

Perrechil, Fabiana A. ^[1] ; Braga, Ana Luiza M. ^{[1, 2]} ; Cunha, Rosiane L. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Campinas UNICAMP, Food Engn Fac, Dept Food Engn, BR-13083862 Campinas, SP - Brazil

^[2] Fed Univ Paraiba UFPB, Technol Ctr Reg Dev, Dept Food Technol, BR-58051900 Joao Pessoa, Paraiba - Brazil

• Tipo de documento: Artigo Científico
• Fonte: INTERNATIONAL JOURNAL OF FOOD SCIENCE AND TECHNOLOGY; v. 48, n. 3, p. 620-627, MAR 2013.
• Citações Web of Science: 8

Resumo

The effects of protein concentration and locust bean gum (LBG) addition on the mechanical properties, microstructure and water holding capacity of acidified soy protein (SPI) gels were studied. The protein was employed in two different states: (i) native and (ii) heat denatured. A slow acidification rate was induced in both systems by applying glucono-d-lactone (GDL). The results indicated that the gels of native SPI were weaker, less deformable and showed lower water holding capacity than the gels of heat-denatured SPI. The LBG addition led to an increase in the strength and water holding capacity of SPI gels, independent of the protein state (native or denatured). These results indicated that the properties of texture and water holding capacity of the SPI acid gels can be modulated by the process conditions or by the addition of other ingredients, such as polysaccharides. (AU)

• Processo FAPESP: 04/08517-3 - Propriedades reologicas, termodinamicas e de microestrutura de sistemas formados por polissacarideos e proteinas globulares.
• Beneficiário: Rosiane Lopes da Cunha
• Modalidade de apoio: Auxílio à Pesquisa - Regular