Cheese Blue Enzyme Modified
Blue cheese is a general classification of cow's milk and/or goat's milk cheeses with a blue or blue-green mold. Roquefort cheese is a particular blue cheese that is made in the south of France. Some other blue cheeses are Stilton (England), Gorgonzola (Italy), Danablu (Denmark), and Americas' entry, Maytag Blue Cheese. These are just a few, there are many more blue cheeses. The blue mold in these cheeses is due to mold spores from Penicillium roqueforti or Penicillium glaucum, etc. Originally each of these cheeses were produced in caves in their respective areas, where the mold was naturally present. This combined with the unique nutrients that the mold grew on in the caves affected the flavor, texture and blue-green color of the mold in each of these cheeses. In the beginning, this was most likely discovered by accident when cheeses were stored in the caves, and they developed mold. Then someone decided to taste the cheese that others might have thought to be ruined, and realized how exquisite the taste had become. Most blue cheeses today are either injected with the mold, as with Roquefort, or the mold is mixed right in with the curds, as it is with Gorgonzola, to insure even distribution of the mold. Most of these cheeses must still be aged in the original caves where they were developed to bear the name. The process for making America's "Maytag Blue Cheese" was developed by the Iowa State U. in 1941 (it is a process for making blue cheese with pasteurized milk.) Production was begun by Fred Maytag II (of dishwasher fame) when he heard about the new process. Maytag blue is also aged in specially designed caves. Some specialist cheeses are made using mouldy breadcrumbs rather than chemical moulds, thus they may contain wheat. Source: http://www.foodreference.com/html/artbluecheese.html Enzymes are biomolecules that catalyze (i.e., increase the rates of) chemical reactions. Nearly all known enzymes are proteins. However, certain RNA molecules can be effective biocatalysts too. These RNA molecules have come to be known as ribozymes. In enzymatic reactions, the molecules at the beginning of the process are called substrates, and the enzyme converts them into different molecules, called the products. Almost all processes in a biological cell need enzymes to occur at significant rates. Since enzymes are selective for their substrates and speed up only a few reactions from among many possibilities, the set of enzymes made in a cell determines which metabolic pathways occur in that cell. Like all catalysts, enzymes work by lowering the activation energy (Ea or ?Gâ€¡) for a reaction, thus dramatically increasing the rate of the reaction. Most enzyme reaction rates are millions of times faster than those of comparable un-catalyzed reactions. As with all catalysts, enzymes are not consumed by the reactions they catalyze, nor do they alter the equilibrium of these reactions. However, enzymes do differ from most other catalysts by being much more specific. Enzymes are known to catalyze about 4,000 biochemical reactions. A few RNA molecules called ribozymes catalyze reactions, with an important example being some parts of the ribosome. Synthetic molecules called artificial enzymes also display enzyme-like catalysis. Enzyme activity can be affected by other molecules. Inhibitors are molecules that decrease enzyme activity; activators are molecules that increase activity. Many drugs and poisons are enzyme inhibitors. Activity is also affected by temperature, chemical environment (e.g., pH), and the concentration of substrate. Some enzymes are used commercially, for example, in the synthesis of antibiotics. In addition, some household products use enzymes to speed up biochemical reactions (e.g., enzymes in biological washing powders break down protein or fat stains on clothes; enzymes in meat tenderizers break down proteins, making the meat easier to chew).