Effect of dietary fibre and MTGase on the quality of mackerel surimi gels

• Type: Article in International Scientific Journal
• Date: 2009

Authors

cardoso, c (Author) Other; mendes, r (Author) Other; vaz-pires, p (Author) ICBAS; nunes, ml (Author) ICBAS

Journal

Title: Journal of the Science of Food and Agriculture

Vol. 89

Pages: 1648-1658

ISSN: 0022-5142

Publisher: Wiley-Blackwell

Indexing

ISI Web of Knowledge - 38 Citations

Scopus - 47 Citations

Scientific classification

FOS: Agrarian Sciences > Other Agrarian Sciences

Other information

Authenticus ID: P-003-GRN

DOI: 10.1002/jsfa.3636

Abstract (EN): BACKGROUND: The effects of microbial transglutaminase (MTGase; 5 g kg(-1)) and dietary fibre (inner pea fibre and chicory root inulin, 20 and 40 g kg(-1)) on gels from surimi made with Atlantic (Scomber scombrus) and chub mackerel (Scomber japonicus) were studied with the purpose of achieving a better understanding of the underlying phenomena and improving gels. RESULTS: MTGase addition improved textural properties (namely, cohesiveness increased from 0.19-0.41 to 0.59-0.72) and increased PH and water-holding capacity (WHC). Moreover, MTGase reduced the elastic and viscous modules and darkened gels; protein solubility declined, meaning greater protein aggregation, according to electropherograms. MTGase had no unequivocal effect upon the gels' microstructure. Pea fibre increased hardness (an increase of almost 60% with 40 g kg(-1)) and related parameters, the elastic and viscous modules and WHC. Pea fibre reduced extractable protein in sodium dodecyl sulfate and urea (in the absence of MTGase) as well. Scanning electron microscopy revealed different structures for gels containing pea fibre. Regarding inulin, it worsened textural quality and WHC. CONCLUSION: A combination of MTGase and pea fibre can improve a poor quality surimi. (C) 2009 Society of Chemical Industry

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 11