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Authors: Juan Pablo Costa 1 ; Horacio Castellini 2 ; Patricia Risso 3 and Bibiana Riquelme 1

Affiliations: 1 FCByF, Universidad Nacional de Rosario and Instituto de Física Rosario (CONICET-UNR), Argentina ; 2 Universidad Nacional de Rosario, Argentina ; 3 FCByF and Universidad Nacional de Rosario, Argentina

Keyword(s): Milk protein, Acid gel, Gel structure, Digital images, Glucono-delta-lactone, Bovine caseins.

Related Ontology Subjects/Areas/Topics: Bioinformatics ; Biomedical Engineering ; Image Analysis

Abstract: Sodium caseinate (NaCAS) is a very useful ingredient in food industry because of its nutritional and functional properties. Acidification produces a gel structure as a result of the dissociation and aggregation of caseinic fractions. Formation of these protein gels can be made by the slow reduction of pH through the addition of glucono-delta-lactone (GDL). Depending on its concentration and temperature, hydrolysis speed of GDL can affect the grade of hardness and elasticity of the formed gel. This study evaluated the effect on the formation and structure of protein gels induced by different relations of GDL through analysis of digital images obtained in an inverted conventional microscope and a confocal microscope. The entropy, smoothness and variance decrease with the added GDL quantity, but the uniformity increases. Results confirm that the texture depends on gelification speed, which is directly related to the amount of added GDL. This digital image analysis technique using conve ntional or confocal microscopy is, therefore, suitable and very useful for the texture analysis of acid gels formed by different GDL/NaCAS rates. (More)

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Paper citation in several formats:
Pablo Costa, J.; Castellini, H.; Risso, P. and Riquelme, B. (2011). TEXTURE ANALYSIS OF MILK PROTEIN GELS USING DIGITAL IMAGE ANALYSIS . In Proceedings of the International Conference on Bioinformatics Models, Methods and Algorithms (BIOSTEC 2011) - BIOINFORMATICS; ISBN 978-989-8425-36-2; ISSN 2184-4305, SciTePress, pages 322-325. DOI: 10.5220/0003289303220325

@conference{bioinformatics11,
author={Juan {Pablo Costa}. and Horacio Castellini. and Patricia Risso. and Bibiana Riquelme.},
title={TEXTURE ANALYSIS OF MILK PROTEIN GELS USING DIGITAL IMAGE ANALYSIS },
booktitle={Proceedings of the International Conference on Bioinformatics Models, Methods and Algorithms (BIOSTEC 2011) - BIOINFORMATICS},
year={2011},
pages={322-325},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0003289303220325},
isbn={978-989-8425-36-2},
issn={2184-4305},
}

TY - CONF

JO - Proceedings of the International Conference on Bioinformatics Models, Methods and Algorithms (BIOSTEC 2011) - BIOINFORMATICS
TI - TEXTURE ANALYSIS OF MILK PROTEIN GELS USING DIGITAL IMAGE ANALYSIS
SN - 978-989-8425-36-2
IS - 2184-4305
AU - Pablo Costa, J.
AU - Castellini, H.
AU - Risso, P.
AU - Riquelme, B.
PY - 2011
SP - 322
EP - 325
DO - 10.5220/0003289303220325
PB - SciTePress

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