Lipid and protein structure analysis of frankfurters formulated with olive oil-in-water emulsion as animal fat replacer
Lipid and protein structural characteristics of frankfurter formulated with olive oil-in-water emulsion stabilized with soy protein isolate (SPI) as pork backfat replacer were investigated using Fourier transform infrared spectroscopy (FT-IR). Proximate composition and textural properties were also evaluated. Different frankfurters were reformulated: F/PF with pork backfat, F/SPI with oil-in-water emulsion stabilized with SPI and F/SPI + SC + MTG with emulsion stabilized with a combination of SPI, sodium caseinate (SC) and microbial transglutaminase (MTG). Replacement of pork backfat with these emulsions produced an increase (P < 0.05) of hardness, springiness, cohesiveness and chewiness but a reduction (P < 0.05) of adhesiveness. F/SPI and F/SPI + SC + MTG frankfurters showed the lowest (P < 0.05) half-bandwidth in the 2922 cm -1 band, which could be related to lipid chains were more ordered than in F/PF. Modifications in the amide I band profile revealed a higher concentration of aggregated intermolecular β-sheets in F/SPI + SC + MTG samples. Lipid and protein structural characteristics could be associated with specific textural properties of healthier frankfurters. © 2012 Elsevier Ltd. All rights reserved.
Main Authors: | Herrero, Ana M., Carmona, Pedro, Pintado, T., Jiménez Colmenero, Francisco, Ruiz-Capillas, C. |
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Format: | artículo biblioteca |
Language: | English |
Published: |
Elsevier
2012
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Subjects: | Lipid structure, Protein structure, Olive oil-in-water emulsion, Healthier lipid frankfurter, Texture, Soy protein isolate, |
Online Access: | http://hdl.handle.net/10261/58714 |
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