Exopolysaccharides from the lactose-negative yeast Rhodotorula glutinis 16P were synthe­ sized by co-cultivation with the yeast Kluyveromyces lactis MP11 or with the homofermentative lactic acid bacteria Lactobacillus helveticus 9A in a cheese whey ultrafiltrate. Exopoly­ saccharides were produced by lactose hydrolysis, performed by two pathways: with ß-galactosidase from Kluyveromyces lactis M...

Biogas yield of mixtures of cattle slurry and cheese whey, rates of production of methane, removal efficiencies of chemical oxygen demand (COD) and biological oxygen demand (BOD) from the mixtures were investigated at 35°C. Four feed regimens (by volume) were studied. Stable biogas production of 621 l/kg Volatile Solids at an Hydraulic Retention Time of 42 days in a mixture containing 50% slurr...

In the past, milk whey was only a by-product of cheese production, but currently, it has a high commercial value for use in the food industries. However, the regulation of whey management (i.e., storage and hygienic properties) has not been updated, and as a consequence, its microbiological quality is very challenging for food safety. The Next Generation Sequencing (NGS) technique was applied t...

One of the earliest biotechnological applications enzymes is cheese production. The high specific milk-clotting activity chymosin gives it an advantage over other proteases in industry. action based on hydrolysis bond between amino acid residues Phe105 and Met106 κ-casein molecule, which causes destabilisation casein micelles, coagulation milk its separation into a clot whey. A recombinant came...

Abstract In the United States, over 70% of milk production is priced under Federal Milk Marketing Orders (FMMOs). A primary purpose FMMOs to facilitate orderly allocation as a limited, perishable resource among alternative uses. Fundamental are regulatory prices applicable used in cheese and whey (Class III), nonfat dry butter IV). This work examines novel pricing method based on concept opport...

The recovery of high-quality, valuable end products from cheese whey is a very important industrial process. The aim of this study is to improve the recovered protein content of concentrate stream in cheese whey. The experiments were conducted by using ceramic ultrafiltration (UF) membrane followed by diafiltration (DF) process with a 15kDa molecular weight cut-off (MWCO). The volume concentrat...

Biogas yield of mixtures of cattle slurry and cheese whey, rates of production of methane, removal efficiencies of chemical oxygen demand (COD) and biological oxygen demand (BOD) were investigated at 35 °C. Stable biogas production of 621 l/kg volatile solids at a hydraulic retention time of 42 days in a mixture containing 50% slurry and whey was obtained. The concentration of methane in the bi...

Lactose is an interesting carbon source for the production of several bio-products by fermentation, primarily because it is the major component of cheese whey, the main by-product of dairy activities. However, the microorganism more widely used in industrial fermentation processes, the yeast Saccharomyces cerevisiae, does not have a lactose metabolization system. Therefore, several metabolic en...

HA is a high value product with an increasing level of demand in the clinical and pharmaceutical sectors due to its high MW and interesting viscoelastic and rheological properties [2]. Interest in the production of HA by fermentation has focused scientific research in the last years. However, the formulation of costeffective culture media must be addressed for maintaining the commercial competi...