Lactic Acid Wikipedia

Lactic acid - Wikipedia.

History. Swedish chemist Carl Wilhelm Scheele was the first person to isolate lactic acid in 1780 from sour milk. The name reflects the lact-combining form derived from the Latin word lac, which means milk.In 1808, Jons Jacob Berzelius discovered that lactic acid (actually L-lactate) also is produced in muscles during exertion. Its structure was established by Johannes Wislicenus in ....

Lactic acid fermentation - Wikipedia.

Lactic acid fermentation is a metabolic process by which glucose or other six-carbon sugars (also, disaccharides of six-carbon sugars, e.g. sucrose or lactose) are converted into cellular energy and the metabolite lactate, which is lactic acid in solution.It is an anaerobic fermentation reaction that occurs in some bacteria and animal cells, such as muscle cells..

Polylactic acid - Wikipedia.

Carboxylic acid and alcohol end groups are thus concentrated in the amorphous region of the solid polymer, and so they can react. Molecular weights of 128-152 kDa are obtainable thus. Another method devised is by contacting lactic acid with a zeolite. This condensation reaction is a one-step process, and runs about 100 ?C lower in temperature..

Lactic acid bacteria - Wikipedia.

Characteristics. The lactic acid bacteria (LAB) are either rod-shaped (), or spherical (), and are characterized by an increased tolerance to acidity (low pH range).This aspect helps LAB to outcompete other bacteria in a natural fermentation, as they can withstand the increased acidity from organic acid production (e.g., lactic acid).Laboratory media used for LAB typically include ....

Lactic acidosis - Wikipedia.

Lactic acidosis is a medical condition characterized by a build-up of lactate (especially L-lactate) in the body, with formation of an excessively low pH in the bloodstream. It is a form of metabolic acidosis, in which excessive acid accumulates due to a problem with the body's oxidative metabolism.. Lactic acidosis is typically the result of an underlying acute or chronic medical ....

Malic acid - Wikipedia.

Malic acid is an organic compound with the molecular formula C 4 H 6 O 5.It is a dicarboxylic acid that is made by all living organisms, contributes to the sour taste of fruits, and is used as a food additive.Malic acid has two stereoisomeric forms (L- and D-enantiomers), though only the L-isomer exists naturally.The salts and esters of malic acid are known as malates..

Tartaric acid - Wikipedia.

Tartaric acid is a white, crystalline organic acid that occurs naturally in many fruits, most notably in grapes, but also in bananas, tamarinds, and citrus. Its salt, potassium bitartrate, commonly known as cream of tartar, develops naturally in the process of fermentation.It is commonly mixed with sodium bicarbonate and is sold as baking powder used as a leavening agent in food ....

Fatty acid synthesis - Wikipedia.

In biochemistry, fatty acid synthesis is the creation of fatty acids from acetyl-CoA and NADPH through the action of enzymes called fatty acid synthases.This process takes place in the cytoplasm of the cell.Most of the acetyl-CoA which is converted into fatty acids is derived from carbohydrates via the glycolytic pathway.The glycolytic pathway also provides the glycerol with ....

Acid lactic – Wikipedia tiếng Việt.

Axit lactic la mot axit carboxylic voi cong thuc hoa hoc C 3 H 6 O 3. No co mot nhom hydroxyl dung gan nhom carboxyl khien no la mot axit alpha hydroxy (AHA). Trong dung dich, no co the mat mot proton tu nhom acid, tao ra ion lactate CH 3 CH(OH)COO -..

Branched-chain amino acid - Wikipedia.

High levels of lactic acid cause glucose metabolism to stop in order to reduce further reduction of pH. BCAA supplementation has been shown to decrease levels of lactic acid in the muscle, allowing glucose metabolism to continue. This results in reduced rates of glycogenolysis in the liver and consequently lower plasma levels of glucose..

Wine fault - Wikipedia.

A wine fault or defect is an unpleasant characteristic of a wine often resulting from poor winemaking practices or storage conditions, and leading to wine spoilage.Many of the compounds that cause wine faults are already naturally present in wine but at insufficient concentrations to be of issue. In fact, depending on perception, these concentrations may ....

Energy system (disambiguation) - Wikipedia.

Energy system may refer to: . Energy system, a system primarily designed to supply energy-services to end-users; Electric power system, for the supply, transfer, and use of electric power; Thermodynamic system, a physics concept for analysis of thermal energy exchange; Bioenergetic systems, metabolic processes for converting energy in living organisms; See also.

Quark (dairy product) - Wikipedia.

Quark or quarg is a type of fresh dairy product made from milk. The milk is soured, usually by adding lactic acid bacteria cultures, and strained once the desired curdling is achieved. It can be classified as fresh acid-set cheese.Traditional quark can be made without rennet, but in modern dairies small quantities of rennet are typically added.It is soft, white and unaged, and usually ....

Nutrient - Wikipedia.

An essential amino acid is an amino acid that is required by an organism but cannot be synthesized de novo by it, and therefore must be supplied in its diet. Out of the twenty standard protein-producing amino acids, nine cannot be endogenously synthesized by humans: phenylalanine, valine, threonine, tryptophan, methionine, leucine, isoleucine, lysine, and histidine..

SCOBY - Wikipedia.

SCOBY is the commonly used acronym for "symbiotic culture of bacteria and yeast", and is formed after the completion of a unique symbiotic fermentation process of lactic acid bacteria (LAB), acetic acid bacteria (AAB), and yeast to form several sour foods and beverages such as kombucha and kimchi. Beer and wine also undergo fermentation with yeast, but the lactic acid ....

Glossary of chemical formulae - Wikipedia.

lactic acid: 50-21-5 HC 5 H 5 N + pyridinium ion: HC 6 H 7 O 6: ascorbic acid: 50-81-7 HC 9 H 7 O 4: acetylsalicylic acid: 50-78-2 HC 12 H 17 ON 4 SCl 2: thiamine hydrochloride vitamin B 1 hydrochloride: 67-03-8 HCl: hydrochloric acid hydrogen chloride: 7647-01-0 HClO: hypochlorous acid: 7790-92-3 HClO 2: chlorous acid: 13898-47-0 HClO 3 ....

Difference Between Lactic Acid and Alcoholic Fermentation.

Dec 25, 2017 . The main difference between lactic acid and alcoholic fermentation is that lactic acid fermentation produces lactic acid molecules from pyruvate whereas alcoholic fermentation produces ethyl alcohol and carbon dioxide. Alcoholic fermentation of yeast is used in the food industry to produce wine and beer..

Curd - Wikipedia.

Types of curd. There are two methods to make curd, with rennet and with acid. Using acid, like lemon juice or lactic acid, to make curd releases the lactose into the water. Thus the solid curd formed from this method is good for people with lactose intolerance.This type of curd is known as Chhena in India.. Using rennet to make curd attaches the lactose to the solid coagulated proteins..

Acid - Wikipedia.

An acid is a molecule or ion capable of either donating a proton (i.e. hydrogen ion, H +), known as a Bronsted-Lowry acid, or forming a covalent bond with an electron pair, known as a Lewis acid.. The first category of acids are the proton donors, or Bronsted-Lowry acids.In the special case of aqueous solutions, proton donors form the hydronium ion H 3 O + and are known as Arrhenius ....

2-Ethylhexanoic acid - Wikipedia.

2-Ethylhexanoic acid is the organic compound with the formula CH 3 (CH 2) 3 CH(C 2 H 5)CO 2 H. It is a carboxylic acid that is widely used to prepare lipophilic metal derivatives that are soluble in nonpolar organic solvents..

Crystal violet - Wikipedia.

Crystal violet or gentian violet, also known as methyl violet 10B or hexamethyl pararosaniline chloride, is a triarylmethane dye used as a histological stain and in Gram's method of classifying bacteria. Crystal violet has antibacterial, antifungal, and anthelmintic properties and was formerly important as a topical antiseptic.The medical use of the dye has been largely superseded by ....

Steroid - Wikipedia.

A steroid is a biologically active organic compound with four rings arranged in a specific molecular configuration.Steroids have two principal biological functions: as important components of cell membranes which alter membrane fluidity; and as signaling molecules.Hundreds of steroids are found in plants, animals and fungi.All steroids are ....