Castello cheeses Castello cheeses Castello is a brand of cheeses produced by Arla Foods amba, an agricultural marketing cooperative based in Denmark. Worldwide, a variety of cheeses are marketed under the Castello name, including semi soft cheeses, semi hard cheeses, blue cheeses, and cream cheeses. For the market of Europe, Castello markets soft ripened cheeses called Golden and White; Organic Brie; semi hard cheeses Herrgård and Prast; blue cheeses Black, Creamy Blue, Danablu, Danablu Gold, Organic Blue, Organic Mild; and a line of cream cheeses. For the market of North America, Castello markets a camembert, a brie, and several varieties of blue
Blue cheese enzyme, rennet, plays in removing the hairy layer in the casein micelle. Rennet is an enzyme that cleaves the κ-casein off the casein micelle, thus removing the strain that occurs when the hairy layer entangles. The casein micelles are then able to aggregate together when they collide with each other, forming the curds that can then be made into blue cheese. "Penicillium roqueforti" and "Penicillium glaucum" are both molds that require the presence of oxygen to grow. Therefore, initial fermentation of the cheese is done by lactic acid bacteria. The lactic acid bacteria, however, are killed by the low pH