Gastric acid network (called canaliculi) from which the hydrochloric acid is secreted into the lumen of the stomach. The 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. The highly acidic environment in the stomach lumen causes proteins from food to lose their characteristic folded structure (or denature). This exposes the protein's peptide bonds. The gastric chief cells of the stomach secrete
Food presentation in food aesthetics is the development of molecular food in Spain, which emphasizes the essence of food using scientific elements. Molecular science can break down the roles of carbohydrates and protein in order to isolate what creates particular tastes. For instance, modern science makes it possible to freeze ice cream using liquid nitrogen and create wine using sugars, creating efficient and visually interesting new dishes. Like other aspects of culture, food presentation is subject to trends and fads. For instance, "unicorn food", a style of presentation that uses a rainbow color palette to decorate food, became popular in 2017. The