BACKGROUND Raw ewe's milk, as used to manufacture Serra da Estrela Protected Designation of Origin cheese, was pre-treated by high pressure processing (HPP), using previously optimized conditions (121 MPa for 30 min), aiming evaluate its effect on milk technological properties subsequent cheese production, namely the impact resulting curd, whey and throughout ripening. RESULTS The yield increas...

Aflatoxin M1 (AFM1) is an important mycotoxin frequently found in milk and in dairy products. It is a minor metabolic product of Aspergillus flavus and A parasiticus. However, it occurs in dairy products as a metabolite formed in cows from aflatoxin B1 contained in animal feeds. In cheese production, AFM1 distributes between curd and whey, being present in products derived from cheese whey proc...

Membrane technology has revolutionized the dairy sector. Different types of membranes are used in the industry for various purposes like extending the shelf life of milk without exposure to heat treatment, standardization of the major components of milk for tailoring new products as well increasing yield and quality of the dairy products, and concentrating, fractionation and purification of mil...

GMP is a C-terminal hydrophilic casein-peptide formed by 64 amino acid residues which presents up to four carbohydrate chains (sialic acid-galactose-N-acetyl galactosamine) bonded to threonine residues in six different positions (121; 131; 133; 136; 142, and 165). Ramified chain amino acids prevail in its structure; nevertheless there is absence of aromatic amino acids (phenylalanine, tryptopha...

The objective of present study was to evaluate the effects of the application of chitosan and chitosan/whey protein on the chemical, microbial and organoleptic properties of Göbek Kashar cheese during ripening time (on 3(rd), 30(th), 60(th) and 90(th) d). Difference in microbiological and chemical changes between samples was found to be significant (p<0.05) during ripening period. Cheese sample...

Whey is a co-product of processes for the production of cheese and casein that retains most of the lactose content in milk. World production of whey is estimated around 200 million tons per year with an increase rate of about 2%/per year. Milk production is seasonal, so surplus whey is unavoidable. Traditionally, whey producers have considered it as a nuisance and strategies of whey handling ha...

The effect of whey protein concentrate based edible coating incorporating different concentrations of natamycin and lysozyme-xanthan gum conjugate on ultrafiltrated white cheese shelf life was investigated. Escherichia coli O157: H7 (as an indicator for gram negative bacteria), Staphylococcus aureus (as an indicator of gram-positive bacteria), and Penicillium chrysogenum (as a mold) were inocul...

The dairy industry produces large quantities of whey as a by-product of cheese production and is increasingly looking for new ways to utilize this waste product. Gellan gum is reliably produced by Sphingomonas paucimobilis in growth media containing lactose, a significant component of cheese whey, as a carbon source. We studied and compared polysaccharide biosynthesis by S. paucimobilis ATCC 31...

ods have used this enzyme to crosslink proteins in the presence of calcium. The enzyme has been used to produce a curd. In our study, three replicate trials with unfortified skim milk and direct set cottage cheese manufacturing were completed. Experimental vats were manufactured using 10 units of transglutaminase enzyme per gram of total protein in the skim added immediately after the glucono d...

The present work assesses the efficacy of whey protein edible coatings with antimicrobial properties applied to ripened cheese as alternatives to commercial cheese coatings. Whey protein edible coatings were produced from ovine whey protein concentrate (WPC) with lactic acid and natamycin as antimicrobials. Two methods of coating polymerization were performed separately and in combination; the ...