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Qishta—A Lebanese Heat Concentrated Dairy Product Characteristics and Production Procedures

Authors :
Najib, Mustapha
Hallab, Mohamad Walid
Hallab, Karim
Hallab, Zaher
Delaplace, Guillaume
Hamze, Monzer
Chihib, Nour-Eddine
Université Libanaise
Unité Matériaux et Transformations - UMR 8207 (UMET)
Institut de Chimie du CNRS (INC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Centrale Lille Institut (CLIL)
Université de Lille
CNRS
INRA
ENSCL
Unité Matériaux et Transformations (UMET) - UMR 8207
Unité Matériaux et Transformations - UMR 8207 [UMET]
Centrale Lille-Institut de Chimie du CNRS (INC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)
Source :
Foods, Foods, MDPI, 2020, Foods, 9 (2), pp.125. ⟨10.3390/foods9020125⟩, Foods, Vol 9, Iss 2, p 125 (2020), Volume 9, Issue 2, Foods, 2020, Foods, 9 (2), pp.125. ⟨10.3390/foods9020125⟩
Publication Year :
2020
Publisher :
HAL CCSD, 2020.

Abstract

This study aims at exploring the chemical composition of a traditional Lebanese dairy product known as Qishta, describing the process of how to prepare it and understanding the mechanisms leading to its formation. The process of making Qishta can be divided into two phases: a hot phase during which milk is heated in a stainless-steel large shallow vessel, and a cold phase consisting of draining, cooling and packaging. According to milk temperature, two reaction zones were identified: zone A with an average temperature of 100 &deg<br />C, and zone B with an average temperature of 60 &deg<br />C. The results showed that Qishta had a moisture, fat, protein, lactose and ash content of 68%, 11.7%, 12.1%, 5.4% and 1.6%, respectively. Our findings showed that Qishta is a lipoprotein product having an equal amount of fat and proteins (&asymp<br />12%)<br />this composition is almost similar to that of Ricotta cheese made from whole milk. In addition, our results assert that the interactions between caseins and whey proteins lead to gel formation. Milk initial fat percentage had a significant effect on Qishta production. The highest yields were obtained when the initial fat percentage was 3.6% (182.5 g of Qishta).

Details

Language :
English
ISSN :
23048158
Database :
OpenAIRE
Journal :
Foods, Foods, MDPI, 2020, Foods, 9 (2), pp.125. ⟨10.3390/foods9020125⟩, Foods, Vol 9, Iss 2, p 125 (2020), Volume 9, Issue 2, Foods, 2020, Foods, 9 (2), pp.125. ⟨10.3390/foods9020125⟩
Accession number :
edsair.dedup.wf.001..7fb493688390b1a3dc99143584d1df50