Bouhezza is a traditional Algerian ripened cheese made in goatskin bags. The aim of this study was to characterise the chemical composition and proteolysis of Bouhezza as well as the microbial ecosystems that are present in this cheese using numerations and PCR-TTGE profiles. The microstructure of the cheese was also observed using confocal microsc...
peer reviewed / Extraction of proteose-peptones (PPs) was carried out from fresh milk, from milk after prolonged incubation (12 days at 37 degrees C) and from two different whey protein concentrates (WPCs). The high performance liquid chromatography profiles of these extracts were compared. PPs eluted as three chromatographic peaks, which increased...
Published in International journal of food microbiology
Lactobacillus helveticus is a lactic acid bacterium very used in fermented milks and cheese. The rapid growth of L. helveticus in milk is supported by an efficient cell envelope proteinase (CEP) activity, due to subtilisin-like serine proteases. These enzymes play also crucial roles in texture and flavor formation in dairy products as well as in ge...
Caseins, the main proteins of milk, are known to be responsible of flux limitations in tangential filtration of skim milk. These proteins are well known to be versatile with the pH. Their initial form, corresponding to the so-called “native casein micelles” is due to a complex aggregation of monomers through calcium phosphate bridges that can be di...
September-October 2006
Two recent techniques using optical immunosensor technology were developed for the quantification of milk proteins in dairy products. The first application is the simultaneous quantification of the 3 major caseins (alpha s(1), beta, and kappa). This assay consists of a 2-step sandwich strategy, with 2 monoclonal antibodies directed against the N- a...
The study of the solubility of unstructured proteins (αS1-, β-, and κ-casein) and well-structured globulin (β-lactoglobulin) in low water binary solvent systems demonstrated the crucial importance of solvent polarity and neutralization of protein polar functions on the final outcome of solubility experiments. The solubilities up to 38, 56, and 96% ...
