Characterisation of soy extract processed under different drying methods and extraction conditions

Autor(es)

Fasolin, Luiz H. ^[1] ; Cunha, Rosiane L. ^[1]

Afiliação do(s) autor(es)

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

• Tipo de documento: Artigo Científico
• Fonte: INTERNATIONAL JOURNAL OF FOOD SCIENCE AND TECHNOLOGY; v. 48, n. 3, p. 503-511, MAR 2013.
• Citações Web of Science: 2

Resumo

Soybean extract (SE), enriched in soy soluble polysaccharide (SSPS), was evaluated in three different conditions varying in extraction temperature and drying process: SE-A -80 degrees C, freeze-dried, SE-B -80 degrees C, spray-dried, SE-C -95 degrees C, spray-dried. Spray-dried SE presented lower moisture content, smaller and more uniform particles. In addition, zeta potential showed the same negative surface charge for all extracts showing the prevailing behaviour of SSPS. Moreover, all biopolymers were composed of three main molecular weight (Mw) fractions, but the Mw distribution was different between the three ingredients, reflecting their rheological behaviour in aqueous solution. Higher mean Mw led to enhanced apparent viscosity observed in neutral and acid pH for SE-A, followed by -B and -C, respectively. The inverse behaviour was observed for intrinsic viscosity at neutral pH. However, SE-C showed lower intrinsic viscosity at acid pH, which was attributed to proteinpolysaccharide interaction presents in the solution. (AU)

• Processo FAPESP: 09/54137-1 - EMUS: aquisição de um analisador de distribuição de tamanho de partículas, um medidor de potencial zeta, um spray dryer e um sistema de cromatografia líquida de ultra alta pressão / espectrômetro de massa
• Beneficiário: Miriam Dupas Hubinger
• Modalidade de apoio: Auxílio à Pesquisa - Programa Equipamentos Multiusuários
• Processo FAPESP: 04/08771-7 - Projeto multi-usuário e multi-institucional para estudo de interações entre polióis e biopolímeros em géis e biofilmes e de açúcares com nanoDSC e FTIR
• Beneficiário: Paulo José do Amaral Sobral
• Modalidade de apoio: Auxílio à Pesquisa - Programa Equipamentos Multiusuários