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Título

Influence of amino acid addition during the storage life of high pressure processed low salt surimi gels

AutorCando, Deysi ; Borderías, A. Javier ; Moreno Conde, Helena María
Palabras claveTexture properties
High pressure processing
Transglutaminase
Low-salt-surimi gels
Fecha de publicación2017
EditorAcademic Press
CitaciónLWT - Food Science and Tecnology 75: 599- 607 (2017)
ResumenProtein gelation is the main step in the preparation of surimi-based products. Salt addition is essential in thermal gelation in order to dissolve myofibrillar proteins before heating. The manufacture of reduced-NaCl surimi-based products poses a technological challenge to the surimi gelation in that the proteins are not previously unfolded. In this study reduced-NaCl surimi gels (0.3 g/100 g NaCl) were made by adding cystine (0.1 g/100 g) or lysine (0.1 g/100 g), with or without high pressure assistance (300 MPa) to determine the influence of those additives on surimi gel and on stability over up to 28 days of chilled storage. Results indicated that the physicochemical properties achieved in the reduced-NaCl surimi gels were similar to those of the gels with regular NaCl content (3 g/100 g). Gel properties remained stable throughout chilled storage, indicating a successful gelation process and a well stabilized protein network. Although gels were microbiologically safe (<10 CFU/g) during chilled storage, sensory analysis detected off-flavour after day 14, especially in cystine samples, rendering them unacceptable. In conclusion these gels exhibit good physicochemical and sensory properties as well as microbiological and sensory stability up to day 14 of chilled storage.
URIhttp://hdl.handle.net/10261/140670
DOI10.1016/j.lwt.2016.10.012
Identificadoresdoi: 10.1016/j.lwt.2016.10.012
issn: 0023-6438
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