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59results about How to "Inhibition inhibition" patented technology

A kind of supported noble metal hydrogenation catalyst and its preparation and application

The invention discloses a supported noble-metal hydrogenation catalyst, and a preparation method and an application of the catalyst. The catalyst is prepared according to the following steps: (1) preparing a mixed solution consisting of water, an alcohol and tetraethyl orthosilicate; (2) pouring activated carbon into the mixed solution obtained in the step (1) and performing stirring, then adding a soluble noble metal salt, regulating the pH value of the slurry to a range of 0.5-2.5, and performing stirring aging to obtain a reaction slurry; (3) adding a base liquor into the reaction slurry to regulate the pH value to a range of 7.5-14, wherein the basic substance in the base liquor is one or a combination of more selected from a group consisting of potassium hydroxide, cesium hydroxide, potassium acetate, cesium acetate, potassium carbonate and cesium carbonate, continuing to perform stir, and finally performing filtering and washing to obtain a catalyst precursor; and (4) performing reduction on the catalyst precursor to obtain the supported noble-metal hydrogenation catalyst. The invention provides an application of the catalyst in catalyzing hydrogenation synthesis of amino phenyl ether compounds which are represented as a formula II by using compounds which are represented as a formula II, the conversion rate reaches 100%, the selectivity can reach 99.5% or more, and the catalyst can be used for 50 times or more.
Owner:ZHEJIANG UNIV OF TECH

Laminaria japonica root hypoglycemic product and preparation method and application thereof

The invention relates to a laminaria japonica root hypoglycemic product and a preparation method and application thereof. The preparation method comprises the following steps that laminaria japonica roots are taken and extracted for multiple times through ethyl alcohol, an antioxidant is added during the extraction process, and an extracted concentrate is obtained; and extract liquor is added into the extracted concentrate for extraction, an antioxidant is added in the extraction process, drying is conducted, and the laminaria japonica root hypoglycemic product is obtained. The laminaria japonica roots used in the preparation method is sufficient in raw material, and the laminaria japonica root hypoglycemic product is definite in hypoglycemic effect and free of toxic and side effects, and is a safe and effective hypoglycemic product; the hypoglycemic product obtained through the preparation method has an obvious inhibition effect on alpha-glucosidase, reaches 140 [mu]g/ml in IC50, and is a noncompetitive inhibitor to the alpha-glucosidase; and an antioxidant vitamin C is added, compared with the prior art, the hypoglycemic effect IC50 is doubled or above, and meanwhile, the product yield is increased by several times.
Owner:QINGDAO JIARILONG SEAFOOD

Instant fermented bean curd and preparation method thereof

ActiveCN112998204AShorten the edible sceneExpand the edible sceneClimate change adaptationCheese manufactureBiotechnologyAcetic acid
The invention provides a preparation method of instant fermented bean curd. The preparation method comprises the following steps: A) soaking soybeans, grinding into thick liquid, boiling the thick liquid, curdling and squeezing to obtain white blanks; B) inoculating mucor on the surface of the white blank, and culturing to obtain a fermented bean curd blank; C) sugaring the fermented bean curd blank to obtain a sugaring blank; and D) bottling the sugared fermented bean curd blank, adding the blended soup, fermenting and sterilizing to obtain the product. A preparation method of the blended soup specifically comprises the following steps: mixing fruit vinegar and salt, sterilizing and cooling. The sugar is used for replacing salt used in traditional fermentation to pickle the fermented bean curd blank, so that 1, the salt content of the finished product fermented bean curd is reduced, and the fermented bean curd is beneficial to human health; 2, the treatment cost of the high-concentration salt wastewater is reduced; 3, the sugar waterlogging can be repeatedly used, so that the production cost is saved; the fruit vinegar is used as a fermentation carrier, and the fruit vinegar contains acetic acid and a low-pH environment, so that the growth of infectious microbes can be effectively inhibited. Meanwhile, the fermented bean curd is endowed with a special fruity flavor.
Owner:四川新希望味业有限公司 +1

Use of beta-carboline alkaloid GAK in preparation of products for treating and/or preventing pulmonary fibrosis

The invention discloses use of a beta-carboline alkaloid GAK in preparation of products for treating and/or preventing pulmonary fibrosis. According to the use, the bioactivity of the beta-carboline alkaloid GAK in treatment on the pulmonary fibrosis is researched, and the condition that the beta-carboline alkaloid GAK has a relatively good improvement action on body weight, survival rate, pulmonary index and tissue pathological changes of PF mice and is dose-dependent is verified. A Masson staining and hydroxyproline assaying result shows that the GAK can be used for obviously inhibiting collagen deposition of pulmonary tissue; and an immunization fluorescence staining result shows that an epithelial cell marker protein E-Cadherin in the pulmonary tissue of mice of a GAK-dosed group is increased obviously, an interstitial cell marker protein alpha-SMA in the pulmonary tissue is decreased obviously, and thus, the GAK has an obvious inhibiting action on an EMT process of a fibrosis stage. The above results show that the GAK has anti-PF activity in an animal body, a theoretical foundation is provided for researching and developing natural product drugs for treating the pulmonary fibrosis, and the GAK is advantageously used for treating the pulmonary fibrosis.
Owner:LINYI UNIVERSITY
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