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Raspberry Ketone
Raspberry ketone is a natural phenolic compound that is the primary aroma compound of red raspberry, red raspberries. Occurrence Raspberry ketone occurs in a variety of fruits, including raspberries, cranberry, cranberries, and blackberry, blackberries. It is biosynthesis, biosynthesized from coumaroyl-CoA. It can be extracted from the fruit, yielding about 1–4 mg per kg of raspberries. Preparation Since the natural abundance of raspberry ketone is very low, it is prepared industrially by a variety of methods from chemical intermediates. One of the ways this can be done is through a crossed aldol condensation followed by catalytic hydrogenation. First, acetone is condensed with 4-hydroxybenzaldehyde to form an Alpha-beta Unsaturated carbonyl compounds, α,β-unsaturated ketone. Then the alkene part is reduced to the alkane. This two-step method produces raspberry ketone in 99% yield. There is a less expensive hydrogenation catalyst, Nickel boride catalyst, nickel boride, wh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Food And Cosmetics Toxicology
''Food and Chemical Toxicology'' is a peer-reviewed scientific journal covering aspects of food safety, chemical safety, and other aspects of consumer product safety. It is published by Elsevier and was established in 1963. The editor-in-chief is José L. Domingo. Abstracting and indexing The journal is abstracted and indexed in Analytical Abstracts, BIOSIS Previews, CAB International, Chemical Abstracts Service, Current Contents/Agriculture, Biology & Environmental Sciences, Current Contents/Life Sciences, Elsevier BIOBASE, EMBASE, MEDLINE/PubMed, Science Citation Index, and Scopus. According to the ''Journal Citation Reports'', it has a 2014 impact factor of 2.895, ranking it 30th out of 87 journals in the category "Toxicology" and 14th out of 123 journals in the category "Food Science & Technology". Controversies In September 2012 F&CT was the original journal which published the paper in question in the Séralini affair. In November 2013 the publisher (Elsevier) then retracte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nickel Boride Catalyst
Nickel boride is the common name of materials composed chiefly of the elements nickel and boron that are widely used as catalysts in organic chemistry. Their approximate chemical composition is Ni2.5B, and they are often incorrectly denoted "" in organic chemistry publications. Nickel boride catalysts are typically prepared by reacting a salt of nickel with sodium borohydride. The composition and properties vary depending on the specific preparation method. The two most common forms, described and evaluated in detail by Herbert C. Brown and Charles Allan Brown in 1963, are known as P−1 nickel and P−2 nickel. These catalysts are usually obtained as black granules (P−1) or colloidal suspensions (P−2). They are air-stable, non- magnetic and non-pyrophoric, but slowly react with water to form nickel hydroxide . They are insoluble in all solvents, but react with concentrated mineral acids. They are claimed to be more effective hydrogenation catalysts than Raney nickel. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Food Additives
Food additives are substances added to food to preserve flavor or enhance taste, appearance, or other sensory qualities. Some additives have been used for centuries as part of an effort to preserve food, for example vinegar (pickling), salt (salting), smoke (smoking), sugar (crystallization), etc. This allows for longer-lasting foods such as bacon, sweets or wines. With the advent of processed foods in the second half of the twentieth century, many additives have been introduced, of both natural and artificial origin. Food additives also include substances that may be introduced to food indirectly (called "indirect additives") in the manufacturing process, through packaging, or during storage or transport. Numbering To regulate these additives and inform consumers, each additive is assigned a unique number called an "E number", which is used in Europe for all approved additives. This numbering scheme has now been adopted and extended by the '' Codex Alimentarius'' Commission t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flavors
Flavor or flavour is either the sensory perception of taste or smell, or a flavoring in food that produces such perception. Flavor or flavour may also refer to: Science *Flavors (programming language), an early object-oriented extension to Lisp * Flavour (particle physics), a quantum number of elementary particles related to their weak interactions *Flavor of Linux, another term for any particular Linux distribution; by extension, "flavor" can be applied to any program or other computer code that exists in more than one current variant at the same time Film and TV * ''Flavors'' (film), romantic comedy concerning Asian-Indian immigrants in America Music Artists and bands *Flavor Flav (born 1959), former rap/hip-hop promoter and current reality television actor *Flavour N'abania (born 1983), Nigerian singer-songwriter * Flavor (band), minor hit with "Sally Had A Party" in 1968 Albums * ''Flavours'' (album), 1975 album by The Guess Who * ''Flavors'' (album), by American R&B ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Raspberry Ellagitannin ...
The raspberry ellagitannin is an ellagitannin found in raspberries. It is a polyphenol per se, containing 6 ellagic acid-type components and two additional monomeric phenolics, for a total of 14 gallic acid units (and all of their substituent phenolic hydroxyl groups). See also * Sanguiin H-6 * Lambertianin C * Raspberry ketone References {{Ellagitannin Ellagitannins Natural phenol trimers ellagitannin The ellagitannins are a diverse class of hydrolyzable tannins, a type of polyphenol formed primarily from the oxidative linkage of galloyl groups in 1,2,3,4,6-pentagalloyl glucose. Ellagitannins differ from gallotannins, in that their galloyl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Food And Drug Administration
The United States Food and Drug Administration (FDA or US FDA) is a List of United States federal agencies, federal agency of the United States Department of Health and Human Services, Department of Health and Human Services. The FDA is responsible for protecting and promoting public health through the control and supervision of food safety, tobacco products, caffeine products, dietary supplements, Prescription drug, prescription and Over-the-counter drug, over-the-counter pharmaceutical drugs (medications), vaccines, biopharmaceuticals, blood transfusions, medical devices, electromagnetic radiation emitting devices (ERED), cosmetics, Animal feed, animal foods & feed and Veterinary medicine, veterinary products. The FDA's primary focus is enforcement of the Federal Food, Drug, and Cosmetic Act (FD&C), but the agency also enforces other laws, notably Section 361 of the Public Health Service Act, as well as associated regulations. Much of this regulatory-enforcement work is not d ... [...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] |
Dietary Supplement
A dietary supplement is a manufactured product intended to supplement one's diet by taking a pill, capsule, tablet, powder, or liquid. A supplement can provide nutrients either extracted from food sources or that are synthetic in order to increase the quantity of their consumption. The class of nutrient compounds includes vitamins, minerals, fiber, fatty acids, and amino acids. Dietary supplements can also contain substances that have not been confirmed as being essential to life, but are marketed as having a beneficial biological effect, such as plant pigments or polyphenols. Animals can also be a source of supplement ingredients, such as collagen from chickens or fish for example. These are also sold individually and in combination, and may be combined with nutrient ingredients. The European Commission has also established harmonized rules to help insure that food supplements are safe and appropriately labeled. Creating an industry estimated to have a 2020 value of $ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cardiotoxic
Cardiotoxicity is the occurrence of heart dysfunction as electric or muscle damage, resulting in heart toxicity. The heart becomes weaker and is not as efficient in pumping blood. Cardiotoxicity may be caused by chemotherapy (a usual example is the class of anthracyclines) treatment and/or radiotherapy; complications from anorexia nervosa; adverse effects of heavy metals intake; the long-term abuse of or ingestion at high doses of certain strong stimulants such as cocaine; or an incorrectly administered drug such as bupivacaine. One of the ways to detect cardiotoxicity at early stages when there is a subclinical dysfunction is by measuring changes in regional function of the heart using strains. See also * Cardiotoxin III * Batrachotoxin * Heart failure * Drug interaction Drug interactions occur when a drug's mechanism of action is disturbed by the concomitant administration of substances such as foods, beverages, or other drugs. The cause is often the inhibition of the speci ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Synephrine
Synephrine, or, more specifically, ''p''-synephrine, is an alkaloid, occurring naturally in some plants and animals, and also in approved drugs products as its ''m''-substituted analog known as neo-synephrine. ''p''-Synephrine (or formerly Sympatol and oxedrine British_Approved_Name">BAN.html" ;"title="British_Approved_Name.html" ;"title="nowiki/>British Approved Name">BAN">British_Approved_Name.html" ;"title="nowiki/>British Approved Name">BAN and ''m''-synephrine are known for their longer acting adrenergic effects compared to epinephrine and norepinephrine. This substance is present at very low concentrations in common foodstuffs such as orange juice and other orange (''Citrus'' species) products, both of the "sweet" and "bitter" variety. The preparations used in traditional Chinese medicine (TCM), also known as Zhi Shi (枳实), are the immature and dried whole oranges from ''Citrus aurantium'' (Fructus Aurantii Immaturus). Extracts of the same material or purified synephrine ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ketone Bodies
Ketone bodies are water-soluble molecules that contain the ketone groups produced from fatty acids by the liver (ketogenesis). Ketone bodies are readily transported into tissues outside the liver, where they are converted into acetyl-CoA (acetyl-Coenzyme A)—which then enters the citric acid cycle (Krebs cycle) and is oxidized for energy. These liver-derived ketone groups include acetoacetic acid (acetoacetate), beta-hydroxybutyrate, and acetone, a spontaneous breakdown product of acetoacetate (see graphic). Ketone bodies are produced by the liver during periods of caloric restriction of various scenarios: low food intake (fasting), carbohydrate restrictive diets, starvation, prolonged intense exercise, alcoholism, or during untreated (or inadequately treated) type 1 diabetes mellitus. Ketone bodies are produced in liver cells by the breakdown of fatty acids. They are released into the blood ''after'' glycogen stores in the liver have been depleted. (Glycogen stores typically ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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