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N-acetylneuraminic acid guide to efficacy and application

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  What is N-acetylneuraminic acid? N-acetylneuraminic acid, also known as  sialic acid (SA) , bird's nest acid, is a naturally occurring amino sugar, which was originally isolated from bovine submandibular adenomucin, hence the name sialic acid. Sialic acid is a nine-carbon monosaccharide derivative containing an amino group, and is a general term for all N- or O-derivatives of neuraminic acid or keto-deoxynonyluronic acid (KDN). Sialic acid usually exists in the form of oligosaccharides, glycolipids or glycoproteins, mainly in the form of short-chain residues at the ends of glycoproteins and glycolipids. Acetylneuraminic acid main source The main sources of sialic acid are breast milk and dairy products. Including human milk, cow milk, goat milk and yogurt, the content of breast milk colostrum is the highest, which can reach more than 1.5 g / liter, and the average content of sialic acid in skim milk powder is 172 mg / 100 g. Another great source of sialic acid is egg foods. ...

Determination of effective components in grape seed extract

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Grape seed extract  is a kind of polyphenols extracted from grape seeds, mainly composed of procyanidins, catechins, epicatechins, gallic acid, epicatechin gallate and other polyphenols. Determination of effective components in grape seed extract Bate Smith method This method determines the Proanthocyanidins in grape seed extract, and its content is expressed by proanthocyanidins index. Since there is no standard of proanthocyanidins, this method only determines the relative value of proanthocyanidins in grape seed extract. Principle Procyanidins are converted into red anthocyanins by heating under acidic conditions. Operating procedures Weigh an appropriate amount of grape seed extract (about 15 ~ 40mg) and dissolve it in methanol, and finally dissolve it in 100ml. Take 1ml of sample solution from it and add it to 10ml colorimetric tube, then add 6ml of hydrochloric acid n-butanol solution (5/95, v/v), react at 97 ℃ for 40min, take it out and cool it quickly, measure its absorbanc...

Olive fruit extract helps protect skin

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       Olive fruit extract  helps protect skin In hot summer, the weather is getting hotter and hotter, and the sunshine is getting stronger and stronger. Unconsciously, we will bear the baptism of overexposure. Sunlight brings warmth and ultraviolet rays. UV is the biggest enemy of skin, because it will produce reactive oxygen species, lead to lipid peroxidation, damage DNA in skin cells, and cause skin photoaging. Many of our skin problems, such as pigment production (age spots, color spots, sunburn, etc.), skin relaxation, wrinkles, and even red blood, sensitive skin are related to UV. Skin maintenance requires both internal and external repair. In this era of beauty economy, beauty lovers have not only relied on external beauty effects such as medical beauty and skin care products, but also focused on healthy and safe oral skin care products, gradually entering the stage of "external application + oral" and pursuing "internal and external maintenance". Olive...

What is rhubarb extract used for?

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       Basic product introduction of rhubarb extract Rhubarb extract  is Rheum palmatum L Rheum tanguticum maxim ex Balf. Or Rheum officinale baill Extracts from dried roots and rhizomes of. It is mainly produced in Qinghai, Gansu, Sichuan and other places. Rhubarb is mainly produced in Sichuan, Hubei and other places. The effective ingredients are anthraquinone compounds, including rhein, emodin, chrysophanol, aloe emodin, emodin methyl ether, etc., which have the effects of scavenging oxygen free radicals, regulating blood lipids, anti arteriosclerosis, anti-cancer, anti-aging, anti psychosis, antibacterial and anti-inflammatory, protecting the liver and gallbladder, anti-virus and so on. Pharmacological effects of rhubarb extract 1. Impact on digestive system (1) Purgative effect: the main effect site of diarrhea is in the large intestine. The effective component of rhubarb is anthracoside, mainly sennoside. Sennoside decomposes under the action of intes...

Alpha arbutins uses - what can I do with this product?

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  Alpha arbutin  is an ingredient with multiple uses in skin care products, mainly extracted from the leaves of the bearberry plant. It can be used as a skin brightener, lighten pigmentation, and has anti-inflammatory and bactericidal effects. Go ahead for more specific effects, using methods and precautions. Alpha arbutin serum various effects 1. Lighten dark spots One of the most important effects of arbutin is to lighten dark spots and whiten the skin. Alpha-arbutin is a new type of whitening raw material, which can be quickly absorbed by the skin. Generally speaking, melanin in the human body increases with age. However, the components of α-arbutin can inhibit the activity of endonuclease, avoid the oxidation of glutamic acid, and affect the synthesis of dopa and dopaquinone, thereby blocking the production of melanin. At the same time, α-arbutin can also promote the decomposition and excretion of melanin, so as to avoid the deposition of skin pigment, so as to achieve the...

What are the medicinal, nutritional and cosmetic value of aloe?

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Aloe  contains 75 elements, which are almost completely consistent with the substances required by human cells. In Western countries, cosmetics are marked with aloe vera and their value has doubled, so it is obvious that its diet and medical effects, and some hospitals are helpless with chronic diseases. Difficult and difficult diseases often have incredible effects. People are honored as "magic plants." , "Family Medicine Box".       The nutritional value of fresh aloe :   1. Stabilized aloe gel ingredients: lignin, aloe acid, saponin, anthraquinone, aloin, cinnamic acid quinone, aloin, aloe-emodin, isoaloin, emodin, anthracene, phenol, rhein , Anthracene Resistannol;   2. Vitamins: vitamin B1, folic acid, vitamin B2, vitamin C, nicotinamide, vitamin E, vitamin B6, vitamin A, choline, (B-carotene);   3. Inorganic element: Ca;   4. Monosaccharides and mucopolysaccharides: cellulose, aoldonentose, glucose, L-rhamnose, glycosides, and sugar;   ...