Production and physicochemical properties of resistant starch from hydrolysed wrinkled pea starch

Autor(es)

Polesi, Luis F. ^[1] ; Sarmento, Silene B. S. ^[1] ; Franco, Celia M. L. ^[2]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, ESALQ USP, Coll Agr Luiz Queiroz, Dept Agroind Food & Nutr, Sao Paulo - Brazil

^[2] Sao Paulo State Univ, UNESP, Dept Food Engn & Technol, Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: INTERNATIONAL JOURNAL OF FOOD SCIENCE AND TECHNOLOGY; v. 46, n. 11, p. 2257-2264, NOV 2011.
• Citações Web of Science: 5

Resumo

The content and physicochemical properties of resistant starches (RS) from wrinkled pea starch obtained by different molecular mass reduction processes were evaluated. Native and gelatinised starches were submitted to acid hydrolysis (2 m HCl for 2.5 h) or enzymic hydrolysis (pullulanase, 40 U g(-1) for 10 h), followed by hydrothermal treatment (autoclaving at 121 degrees C for 30 min), refrigeration (4 degrees C for 24 h) and lyophilisation. Native starch showed RS and total dietary fibre contents of 39.8% and 14.3%, respectively, while processed ones showed values from 38.5% to 54.6% and from 22.9% to 37.1%, respectively. From these, the highest contents were among acid-modified starches. Processed starches showed endotherms between 144 and 166 degrees C, owing to the amylose retrogradation. Native and processed starches showed low viscosity, which is inversely proportional to the RS concentration in samples. The heat treatment promoted an increase in the water absorption index. The pea starch is a good source for obtaining resistant starch by acid hydrolysis. (AU)

• Processo FAPESP: 07/52986-6 - Amido resistente obtido a partir de amido de leguminosas e de seus hidrolisados
• Beneficiário: Luis Fernando Polesi
• Linha de fomento: Bolsas no Brasil - Mestrado
• Processo FAPESP: 07/58577-0 - Amido resistente a partir de amido de leguminosas e de seus hidrolisados
• Beneficiário: Silene Bruder Silveira Sarmento
• Linha de fomento: Auxílio à Pesquisa - Regular