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Nuruk
''Nuruk'' () is a traditional Korean fermentation starter. It is used to make various types of Korean alcoholic beverages including ''takju'', ''cheongju'', and soju. It is an essential ingredient in Shindari and is mixed with rice.Nowicki, Stephen. Holt McDougal Biology. Orlando, FL: Holt McDougal, 2012. Print. Historically, it was used in a variety of provinces of Korea, including Jeju Island. Wheat, rice (of both the glutinous and non-glutinous types), and barley are used to make ''nuruk,'' either as whole grain or in the form of grits or flour. Wheat ''nuruk'' is the most common variety. The dry grain is moistened, shaped into a large cake, and hung up to ferment for 2‒4 weeks in an ondol room. The cake matures at a precise temperature until a mold forms. Origin ''Nuruk'' has been used in Korea since the period of the Three Kingdoms in the 3rd century CE, while similar fermentation starter, '' jiuqu'', was first made in China during the Warring States period beginning in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Korean Alcoholic Beverages
Korean cuisine has a wide variety of traditional alcoholic drinks, known as ''sul'' (). Many of these drinks end with the Sino-Korean word ''-ju'' (), and some end with the native Korean word ''-sul''. The Sino-Korean ''-ju'' is not used as an independent noun. There are an estimated 1,000 or more kinds of alcoholic drinks in Korea. Most are made from rice, and are fermented with the aid of yeast and ''nuruk'' (a wheat-based source of the enzyme amylase). Fruits, flowers, herbs, and other natural ingredients have also been used to craft traditional Korean alcoholic drinks. There are six distinct flavors: sweet, sour, pungent, roasted, bitter, and spicy. When the flavors are balanced, the alcohol is considered of good quality. Etymology There are several hypotheses regarding the origin of the word Sul, for one it is thought to have come from Chinese characters or Su-eul meaning Korean milk porridge (Korean word Tarakjuk). It can be understood that Sul must have derived from the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nuruk
''Nuruk'' () is a traditional Korean fermentation starter. It is used to make various types of Korean alcoholic beverages including ''takju'', ''cheongju'', and soju. It is an essential ingredient in Shindari and is mixed with rice.Nowicki, Stephen. Holt McDougal Biology. Orlando, FL: Holt McDougal, 2012. Print. Historically, it was used in a variety of provinces of Korea, including Jeju Island. Wheat, rice (of both the glutinous and non-glutinous types), and barley are used to make ''nuruk,'' either as whole grain or in the form of grits or flour. Wheat ''nuruk'' is the most common variety. The dry grain is moistened, shaped into a large cake, and hung up to ferment for 2‒4 weeks in an ondol room. The cake matures at a precise temperature until a mold forms. Origin ''Nuruk'' has been used in Korea since the period of the Three Kingdoms in the 3rd century CE, while similar fermentation starter, '' jiuqu'', was first made in China during the Warring States period beginning in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Takju
''Makgeolli'' ( ko, 막걸리, raw rice wine ), sometimes anglicized to makkoli (, ), is a Korean alcoholic beverage. The milky, off-white, and lightly sparkling rice wine has a slight viscosity that tastes slightly sweet, tangy, bitter, and astringent. Chalky sediment gives it a cloudy appearance. As a low proof drink of six to nine percent alcohol by volume, it is often considered a "communal beverage" rather than hard liquor. In Korea, ''makgeolli'' is often unpasteurized, and the wine continues to mature in the bottle. Because of the short shelf life of unpasteurized "draft" ''makgeolli'', many exported ''makgeolli'' undergo pasteurization, which deprives the beverage of complex enzymes and flavor compounds. Recently, various fruits such as strawberries and bananas are added to makgeolli to drink in new forms. Names The name ''makgeolli'' () is a compound, consisting of ''mak'' (; "roughly, recklessly, carelessly") and a deverbal noun derived from the verb stem ''georeu-'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
China
China, officially the People's Republic of China (PRC), is a country in East Asia. It is the world's most populous country, with a population exceeding 1.4 billion, slightly ahead of India. China spans the equivalent of five time zones and borders fourteen countries by land, the most of any country in the world, tied with Russia. Covering an area of approximately , it is the world's third largest country by total land area. The country consists of 22 provinces, five autonomous regions, four municipalities, and two Special Administrative Regions (Hong Kong and Macau). The national capital is Beijing, and the most populous city and financial center is Shanghai. Modern Chinese trace their origins to a cradle of civilization in the fertile basin of the Yellow River in the North China Plain. The semi-legendary Xia dynasty in the 21st century BCE and the well-attested Shang and Zhou dynasties developed a bureaucratic political system to serve hereditary monarchies, or dyna ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2,6-Dimethoxybenzoquinone
2,6-Dimethoxybenzoquinone (2,6-DMBQ) is a chemical compound, classified as a benzoquinone, that has been found in ''Rauvolfia vomitoria'' and in ''Tibouchina pulchra''. Toxicity At physiological concentrations 2,6-dimethoxybenzoquinone is an antibacterial substance. At higher concentrations there is evidence that it is mutagenic,Brambilla G; Robbiano L; Cajelli E; Martelli A; Turmolini F; Mazzei M Cytotoxic, DNA-damaging and mutagenic properties of 2,6-dimethoxy-1,4-benzoquinone, formed by dimethophrine-nitrite interaction. The Journal of Pharmacology and Experimental Therapeutics (1988), 244(3), 1011-5 cytotoxic, genotoxic, and hepatotoxic Hepatotoxicity (from ''hepatic toxicity'') implies chemical-driven liver damage. Drug-induced liver injury is a cause of acute and chronic liver disease caused specifically by medications and the most common reason for a drug to be withdrawn fro .... Some reports have challenged its mutagenicity and others exclude such a possibility.Int ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Busan
Busan (), officially known as is South Korea's most populous city after Seoul, with a population of over 3.4 million inhabitants. Formerly romanized as Pusan, it is the economic, cultural and educational center of southeastern South Korea, with its port being Korea's busiest and the sixth-busiest in the world. The surrounding "Southeastern Maritime Industrial Region" (including Ulsan, South Gyeongsang, Daegu, and some of North Gyeongsang and South Jeolla) is South Korea's largest industrial area. The large volumes of port traffic and urban population in excess of 1 million make Busan a Large-Port metropolis using the Southampton System of Port-City classification . Busan is divided into 15 major administrative districts and a single county, together housing a population of approximately 3.6 million. The full metropolitan area, the Southeastern Maritime Industrial Region, has a population of approximately 8 million. The most densely built-up areas of the city are situated in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lipase
Lipase ( ) is a family of enzymes that catalyzes the hydrolysis of fats. Some lipases display broad substrate scope including esters of cholesterol, phospholipids, and of lipid-soluble vitamins and sphingomyelinases; however, these are usually treated separately from "conventional" lipases. Unlike esterases, which function in water, lipases "are activated only when adsorbed to an oil–water interface". Lipases perform essential roles in digestion, transport and processing of dietary lipids in most, if not all, organisms. Structure and catalytic mechanism Classically, lipases catalyse the hydrolysis of triglycerides: :triglyceride + H2O → fatty acid + diacylglycerol :diacylglycerol + H2O → fatty acid + monacylglycerol :monacylglycerol + H2O → fatty acid + glycerol Lipases are serine hydrolases, i.e. they function by transesterification generating an acyl serine intermediate. Most lipases act at a specific position on the glycerol backbone of a lipid sub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Protease
A protease (also called a peptidase, proteinase, or proteolytic enzyme) is an enzyme that catalyzes (increases reaction rate or "speeds up") proteolysis, breaking down proteins into smaller polypeptides or single amino acids, and spurring the formation of new protein products. They do this by cleaving the peptide bonds within proteins by hydrolysis, a reaction where water breaks bonds. Proteases are involved in many biological functions, including digestion of ingested proteins, protein catabolism (breakdown of old proteins), and cell signaling. In the absence of functional accelerants, proteolysis would be very slow, taking hundreds of years. Proteases can be found in all forms of life and viruses. They have independently evolved multiple times, and different classes of protease can perform the same reaction by completely different catalytic mechanisms. Hierarchy of proteases Based on catalytic residue Proteases can be classified into seven broad groups: * Serine protease ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amylase
An amylase () is an enzyme that catalyses the hydrolysis of starch (Latin ') into sugars. Amylase is present in the saliva of humans and some other mammals, where it begins the chemical process of digestion. Foods that contain large amounts of starch but little sugar, such as rice and potatoes, may acquire a slightly sweet taste as they are chewed because amylase degrades some of their starch into sugar. The pancreas and salivary gland make amylase (alpha amylase) to hydrolyse dietary starch into disaccharides and trisaccharides which are converted by other enzymes to glucose to supply the body with energy. Plants and some bacteria also produce amylase. Specific amylase proteins are designated by different Greek letters. All amylases are glycoside hydrolases and act on α-1,4-glycosidic bonds. Classification α-Amylase The α-amylases () ( CAS 9014-71-5) (alternative names: 1,4-α-D-glucan glucanohydrolase; glycogenase) are calcium metalloenzymes. By acting at random loca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saccharomyces Cerevisiae
''Saccharomyces cerevisiae'' () (brewer's yeast or baker's yeast) is a species of yeast (single-celled fungus microorganisms). The species has been instrumental in winemaking, baking, and brewing since ancient times. It is believed to have been originally isolated from the skin of grapes. It is one of the most intensively studied eukaryotic model organisms in molecular biology, molecular and cell biology, much like ''Escherichia coli'' as the model bacteria, bacterium. It is the microorganism behind the most common type of fermentation (biochemistry), fermentation. ''S. cerevisiae'' cells are round to ovoid, 5–10 micrometre, μm in diameter. It reproduces by budding. Many proteins important in human biology were first discovered by studying their Homology (biology), homologs in yeast; these proteins include cell cycle proteins, signaling proteins, and protein-processing enzymes. ''S. cerevisiae'' is currently the only yeast cell known to have Berkeley body, Berkeley bo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pichia Anomala
''Pichia anomala'' is a species of ascomycete and teleomorphic fungi of the genus ''Pichia''. It is used as a preventive (biocontrol agent) for undesirable fungi or mold, nevertheless it may spoil food in large quantities. It is used in wine making, airtight stored grain (preventing ''Aspergillus flavus'' aflatoxins), apples, and grapevines. ''P. anomala'' has been reclassified as '' Wickerhamomyces anomalus''. Features Distinguished from some other species of ''Pichia'' by high osmotolerance, ''P. anomala'' ferments sucrose, and assimilates raffinose. Does not exhibit crabtree effect but rather Pasteur effect. Products * ethanol under anaerobiosis * acetate under respiratory and respirofermentative growth. * ethyl acetate from glucose under oxygen limitation, also other small volatiles, e.g., ethyl propanoate, phenyl ethanol, and 2-phenylethyl acetate. * glycerol, arabinitol, and trehalose under osmotic stress Osmotic shock or osmotic stress is physiologic dysfunction c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lactobacillus
''Lactobacillus'' is a genus of Gram-positive, aerotolerant anaerobes or microaerophilic, rod-shaped, non-spore-forming bacteria. Until 2020, the genus ''Lactobacillus'' comprised over 260 phylogenetically, ecologically, and metabolically diverse species; a taxonomic revision of the genus assigned lactobacilli to 25 genera (see below). ''Lactobacillus'' species constitute a significant component of the human and animal microbiota at a number of body sites, such as the digestive system, and the female genital system. In women of European ancestry, ''Lactobacillus'' species are normally a major part of the vaginal microbiota. ''Lactobacillus'' forms biofilms in the vaginal and gut microbiota, allowing them to persist during harsh environmental conditions and maintain ample populations. ''Lactobacillus'' exhibits a mutualistic relationship with the human body, as it protects the host against potential invasions by pathogens, and in turn, the host provides a source of nutrien ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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