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968 results about "Allantoin" patented technology

Allantoin is a chemical compound with formula C₄H₆N₄O₃. It is also called 5-ureidohydantoin or glyoxyldiureide. It is a diureide of glyoxylic acid. Allantoin is a major metabolic intermediate in most organisms including animals, plants and bacteria. It is produced from uric acid, which itself is a degradation product of nucleic acids, by action of urate oxidase (uricase).

Blood sample collecting device

The invention discloses a blood sample collecting device. The collecting device comprises a collecting tube, wherein an orifice of the collecting tube is provided with a sealing rubber plug, the outside of the rubber plug is provided with a protective cap, the collecting tube is filled with additives, the additives are composed of a blood anticoagulation, a hemocyte nucleic acid stabilizing agent, a blood plasma nucleic acid stabilizing agent, and a pH buffer solution; the blood anticoagulation is one or more of oxalate, heparinate and citrate, the pH buffer solution is one of glycine-sodium hydroxide-hydrochloric acid buffer solution; the hemocyte nucleic acid stabilizing agent is one or more of allantoin, 5,5-dimethyl hydantoin and oxazolidine; the blood plasma nucleic acid stabilizing agent is N-acetic acid azomethine, N-(3-acetic acid-amylamine)azomethine. The blood sample collecting device simultaneously contains the hemocyte nucleic acid stabilizing agent and the blood plasma nucleic acid stabilizing agent, and does not contain free aldehyde material, so that the blood sample can be stored in long term at normal temperature, and the free nucleic acid level of the blood sample can be stabilized, and the completeness of the free nucleic acid can be maintained.
Owner:广州维帝医疗技术有限公司

Facial mask with rhus chinensis leaf extract and method for preparing facial mask

The invention provides a facial mask with rhus chinensis leaf extract and a method for preparing the facial mask. The facial mask comprises facial mask base cloth and facial mask essence. The facial mask essence comprises allantoin, methylparaben, EDTA (ethylene diamine tetraacetic acid) disodium, glycerin, betaine, xanthan gum, polyacrylate cross-linked polymers-6, methyl glucitol polyether-10, panthenol, PEG-40 (polyethylene glycol-40) hydrogenated castor oil, beta-glucan, ceramide 3, chitosan oligosaccharide, hyaluronic acid, caprylyl hydroximic acid, polypeptides, the rhus chinensis leaf extract and water. The method for preparing the facial mask includes steps of 1), preparing the rhus chinensis leaf extract by the aid of steps of repeated extraction, micro-filtration and ultra-filtration, reduced-pressure distillation and concentration, spray drying and the like; 2), preparing the facial mask with the rhus chinensis leaf extract. The facial mask and the method have the advantages that a main active component of the facial mask is the natural plant extract, and accordingly obvious tightening, anti-wrinkle, moisturizing and skin whitening effects can be realized by the facial mask; raw materials for the facial mask can come from wide sources, and the method is simple.
Owner:张家界久瑞健康产业发展有限公司
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