The Group also deploys its expertise in the exploration, mining and safeguarding of valuable natural resources. In 2008, the companies of the BAUER Group employed some 8,600 people in over 60 countries and achieved total Group revenues of EUR 1.53 billion.
The main constituent of gastric acid is hydrochloric acid which is produced by parietal cells (also called oxyntic cells) in the gastric glands in the stomach.Its secretion is a complex and relatively energetically expensive process.he pH of gastric acid is 1.5 to 3.5 in the human stomach lumen, the acidity being maintained by the proton pump H+/K+ ATPase. The parietal cell releases bicarbonate into the bloodstream in the process, which causes a temporary rise of pH in the blood, known as an alkaline tide.
How can digestive tissue produce a concentrated acid without damage to cells and molecules exposed to the acid? Tissues associated with the stomach produce not only digestive enzymes but also hydrochloric acid. One type of cell, the parietal cell, secretes HCl which can have a pH as low as 1.5.The HCl helps to chemically break down the food in the stomach.The digestive enzymes have evolved a molecular structure that functions well in a very acid environment. The cells lining the stomach and associated ducts are coated with a protective mucus. The cells are also replaced at a rapid rate.he HCl helps to chemically break down the food in the stomach. The digestive enzymes have evolved a molecular structure that functions well in a very acid environment. The cells lining the stomach and associated ducts are coated with a protective mucus. The cells are also replaced at a rapid rate.