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Tea Importation Act Of 1897
Tea Importation Act of 1897 was a United States public law forbidding the import of tea into the United States with excessive levels of fluoride, heavy metals, oxalate, and pesticides. The Act of Congress established a uniform standard of purity and quality while attempting to achieve the optimal health effects of tea and phenolic content in tea. The statute declared it unlawful to import into the United States "any merchandise as tea which is inferior in purity, quality, and fitness for consumption to the standards kept at customhouses..."21 U.S.C. §§ 301 et seq For nearly a century, Congress provided that no imported tea could enter the United States unless federal tea-tasters decided that it measured up to preselected standard samples. The law restricted the International trade of camellia sinensis. The 1897 statute superseded the Spurious Tea Importation Act of 1883. The act was on the books for 99 years before its repeal in 1996. After repeal, the Food and Drug ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Food And Drugs
Food is any substance consumed by an organism for nutritional support. Food is usually of plant, animal, or fungal origin, and contains essential nutrients, such as carbohydrates, fats, proteins, vitamins, or minerals. The substance is ingested by an organism and assimilated by the organism's cells to provide energy, maintain life, or stimulate growth. Different species of animals have different feeding behaviours that satisfy the needs of their unique metabolisms, often evolved to fill a specific ecological niche within specific geographical contexts. Omnivorous humans are highly adaptable and have adapted to obtain food in many different ecosystems. The majority of the food energy required is supplied by the industrial food industry, which produces food with intensive agriculture and distributes it through complex food processing and food distribution systems. This system of conventional agriculture relies heavily on fossil fuels, which means that the food and agricultura ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Camellia Sinensis
''Camellia sinensis'' is a species of evergreen shrub or small tree in the flowering plant family Theaceae. Its leaves and leaf buds are used to produce the popular beverage, tea. Common names include tea plant, tea shrub, and tea tree (not to be confused with ''Melaleuca alternifolia'', the source of tea tree oil, or the genus ''Leptospermum'' commonly called tea tree). White tea, yellow tea, green tea, oolong, dark tea (which includes pu-erh tea) and black tea are all harvested from one of two major varieties grown today, ''C. sinensis'' var. ''sinensis'' and ''C. s.'' var. ''assamica'', but are processed differently to attain varying levels of oxidation with black tea being the most oxidized and green being the least. Kukicha (twig tea) is also harvested from ''C. sinensis'', but uses twigs and stems rather than leaves. Nomenclature and taxonomy The generic name ''Camellia'' is taken from the Latinized name of Rev. Georg Kamel, SJ (1661–1706), a Moravian-born Jesuit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Great Tea Race Of 1866
In the middle third of the 19th century, the clippers which carried cargoes of tea from China to Britain would compete in informal races to be first ship to dock in London with the new crop of each season. The Great Tea Race of 1866 was keenly followed in the press, with an extremely close finish. ''Taeping'' docked 28 minutes before ''Ariel'' - after a passage of more than 14,000 miles. ''Ariel'' had been ahead when the ships were taken in tow by steam tugs off Deal, but after waiting for the tide at Gravesend the deciding factor was the height of tide at which one could enter the different docks used by each ship. The third finisher, ''Serica'', docked an hour and 15 minutes after ''Ariel''. These three ships had left China on the same tide and arrived at London 99 days later to dock on the same tide. The next to arrive, 28 hours later, was ''Fiery Cross'', followed, the next day, by ''Taitsing''. Given the close finish, and fearing that the consignees might find reason t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Board Of Tea Appeals
Tea Importation Act of 1897 was a United States public law forbidding the import of tea into the United States with excessive levels of fluoride, heavy metals, oxalate, and pesticides. The Act of Congress established a uniform standard of purity and quality while attempting to achieve the optimal health effects of tea and phenolic content in tea. The statute declared it unlawful to import into the United States "any merchandise as tea which is inferior in purity, quality, and fitness for consumption to the standards kept at customhouses..."21 U.S.C. §§ 301 et seq For nearly a century, Congress provided that no imported tea could enter the United States unless federal tea-tasters decided that it measured up to preselected standard samples. The law restricted the International trade of camellia sinensis. The 1897 statute superseded the Spurious Tea Importation Act of 1883. The act was on the books for 99 years before its repeal in 1996. After repeal, the Food and Drug Admini ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phenolic Content In Tea
The phenolic content in tea refers to the phenols and polyphenols, natural plant compounds which are found in tea. These chemical compounds affect the flavor and mouthfeel of tea. Polyphenols in tea include catechins, theaflavins, tannins, and flavonoids. Polyphenols found in green tea include, but are not limited to, epigallocatechin gallate (EGCG), epigallocatechin, epicatechin gallate, and epicatechin; flavanols such as kaempferol, quercetin, and myricitin are also found in green tea. Catechins Catechins include epigallocatechin-3-gallate (EGCG), epicatechin (EC), epicatechin-3-gallate (ECg), epigallocatechin (EGC), catechin, and gallocatechin (GC).The content of EGCG is higher in green tea. Catechins constitute about 25% of the dry mass of a fresh tea leaf, although total catechin content varies widely depending on species, clonal variation, growing location, season, light variation, and altitude. They are present in nearly all teas made from ''Camellia sinensis'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caffeine
Caffeine is a central nervous system (CNS) stimulant of the methylxanthine class. It is mainly used recreationally as a cognitive enhancer, increasing alertness and attentional performance. Caffeine acts by blocking binding of adenosine to the adenosine A1 receptor, which enhances release of the neurotransmitter acetylcholine. Caffeine has a three-dimensional structure similar to that of adenosine, which allows it to bind and block its receptors. Caffeine also increases cyclic AMP levels through nonselective inhibition of phosphodiesterase. Caffeine is a bitter, white crystalline purine, a methylxanthine alkaloid, and is chemically related to the adenine and guanine bases of deoxyribonucleic acid (DNA) and ribonucleic acid (RNA). It is found in the seeds, fruits, nuts, or leaves of a number of plants native to Africa, East Asia and South America, and helps to protect them against herbivores and from competition by preventing the germination of nearby seeds, as well as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Extraction (chemistry)
Extraction in chemistry is a separation process consisting of the separation of a substance from a matrix. Common examples include '' liquid-liquid extraction'', and ''solid phase extraction''. The distribution of a solute between two phases is an equilibrium condition described by partition theory. This is based on exactly how the analyte moves from the initial solvent into the extracting solvent. The term ''washing'' may also be used to refer to an extraction in which impurities are extracted from the solvent containing the desired compound. Types of extraction * Liquid–liquid extraction * Solid-phase extraction * Acid-base extraction * Supercritical fluid extraction * Ultrasound-assisted extraction * Heat reflux extraction * Mechanochemical-assisted extraction * Maceration * Microwave-assisted extraction * Instant controlled pressure drop extraction (DIC, from the French, Détente instantanée contrôlée) * Perstraction Laboratory applications and examples Liquid ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Government Agency
A government or state agency, sometimes an appointed commission, is a permanent or semi-permanent organization in the machinery of government that is responsible for the oversight and administration of specific functions, such as an administration. There is a notable variety of agency types. Although usage differs, a government agency is normally distinct both from a department or ministry, and other types of public body established by government. The functions of an agency are normally executive in character since different types of organizations (''such as commissions'') are most often constituted in an advisory role—this distinction is often blurred in practice however, it is not allowed. A government agency may be established by either a national government or a state government within a federal system. Agencies can be established by legislation or by executive powers. The autonomy, independence, and accountability of government agencies also vary widely. History Early exa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States
The United States of America (U.S.A. or USA), commonly known as the United States (U.S. or US) or America, is a country primarily located in North America. It consists of 50 states, a federal district, five major unincorporated territories, nine Minor Outlying Islands, and 326 Indian reservations. The United States is also in free association with three Pacific Island sovereign states: the Federated States of Micronesia, the Marshall Islands, and the Republic of Palau. It is the world's third-largest country by both land and total area. It shares land borders with Canada to its north and with Mexico to its south and has maritime borders with the Bahamas, Cuba, Russia, and other nations. With a population of over 333 million, it is the most populous country in the Americas and the third most populous in the world. The national capital of the United States is Washington, D.C. and its most populous city and principal financial center is New York City. Paleo-Americ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Infusion
Infusion is the process of extracting chemical compounds or flavors from plant material in a solvent such as water, oil or alcohol, by allowing the material to remain suspended in the solvent over time (a process often called steeping). An infusion is also the name for the resultant liquid. The process of infusion is distinct from both decoction—a method of extraction involving boiling the plant material—and percolation, in which water is passed through the material (as in a coffeemaker). History The first recorded use of essential oils was in the 10th or 11th century by the Persian polymath Avicenna, possibly in ''The Canon of Medicine''. Tea is far older than this, dating back to the 10th century BC as the earliest recorded reference. Preparation techniques Infusion is a chemical process that uses botanicals (typically dried herbs, flowers or berries) that are volatile and release their active ingredients readily in water, oil, or alcohol. In this process, a liquid i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Secretary Of Health And Human Services
The United States secretary of health and human services is the head of the United States Department of Health and Human Services, and serves as the principal advisor to the president of the United States on all health matters. The secretary is a member of the United States Cabinet. The office was formerly Secretary of Health, Education, and Welfare. In 1980, the Department of Health, Education, and Welfare was renamed the Department of Health and Human Services, and its education functions and Rehabilitation Services Administration were transferred to the new United States Department of Education. Patricia Roberts Harris headed the department before and after it was renamed. Nominations to the office of Secretary of HHS are referred to the Health, Education, Labor and Pensions Committee and the United States Senate Committee on Finance, which has jurisdiction over Medicare and Medicaid, before confirmation is considered by the full United States Senate. Secretary of Health and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
