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331 results about "Diosgenin" patented technology

Diosgenin, a phytosteroid sapogenin, is the product of hydrolysis by acids, strong bases, or enzymes of saponins, extracted from the tubers of Dioscorea wild yam, such as the Kokoro. The sugar-free (aglycone) product of such hydrolysis, diosgenin is used for the commercial synthesis of cortisone, pregnenolone, progesterone, and other steroid products.

Environment friendly method for producing diosgenin

The invention provides a method for preparing diosgenin with an environmentally friendly method. At first, raw materials are prepared; then, alcohol-water mixed solution is used for extraction and filtration, and filter residue is used for being fermented to produce alcohol and composing methylcellulose raw materials, a filtrate is condensed to obtain dry extract; and hydrolysis in an acid water is carried out to the extract so as to obtain a solid residue, water washing is carried out till the residue is neutral, and drying is carried out to obtain a hydrolysate. Low-polarity alcohol-water mixed solution reflux is used for removing impurities from the hydrolysate; and finally, gasoline or 120# is used for carrying out extraction, and condensation is carried out to obtain diosgenin with high purity. The method has simple technological process, is liable to industrialization, has no high requirement to equipment, and can obtain the product with a quality melting point of over 195 DEG C; in addition, a large amount of fiber and starch in the raw material, yellow ginger, is effectively separated, which on one side makes good comprehensive use of yellow ginger source and on the other side solves the problems in the emission of large amount of acid water and waste water in the traditional method, thereby economically and effectively solving the problem of environmental protection and basically realizing production without waste.
Owner:HUNAN KEYUAN BIO PRODS

Preparation method of 6a-methyl hydrocortisone

The invention provides a preparation method of 6a-methyl hydrocortisone. The preparation method comprises the steps that hydrocortisone prepared from 4-androstene-3,17-dione (called as 4AD for short) is adopted as a raw material to generate an acid catalytic reaction with triethyl orthoformate in an organic solvent, and etherate 3-ether enol hydrocortisone is obtained; the etherate generates a Manlixi reaction with N-methylaniline and formaldehyde in an organic solvent, and a methylene product 6-methylene hydrocortisone is obtained; the methylene product generates a catalytic hydrogenation reaction in an organic solvent, and 6a-methyl hydrocortisone is obtained. Compared with a production method achieved by taking a mold removal product obtained by processing diosgenin as a raw material, the method for producing 6a-methyl hydrocortisone has the advantages that raw material sources are wide, the processes are economical and environmentally friendly, production operation is easy and convenient, the synthetic route is short, and the product yield is high; by producing 6a-methyl hydrocortisone through the method, the production cost is reduced by 40%-50% compared with a traditional method; the solvents used in production can be recycled and cyclically reused, and implementation of industrialized production is promoted.
Owner:HUNAN KEREY BIOTECH

Pollution-free new technique for extracting diosgenin from yellow ginger

The invention discloses a pollution-free new technique for extracting diosgenin from yellow ginger. The technique comprises the following steps: conducting pretreatment on the yellow ginger; using a solvent to extract the diosgenin with the supplement of other means, and carrying out filtration to obtain a saponin extracting solution; drying the filter residue, and adding a concentrated sulfuric acid into the dried filter residue for carbonization and sulfonation to obtain a carbon-based solid acid; adding the saponin extracting solution into the solid acid at a 2-20 g/50 ml ratio, and carrying out hydrolysis in a water bath at 60-90 DEG C for 2-12 h; after the hydrolysis is completed, separating the solid acid through filtration, using an organic solvent to extract the diosgenin, and carrying out concentration, crystallization, and drying to obtain a diosgenin product. The technique is free of pollution and has the advantages that saponin hydrolysis is realized by using the solid acid prepared from a waste residue of the yellow ginger, so that resources can be recycled, and the defects in the traditional production processes, such as serious pollution from wastewater and serious waste of waste residues, can be overcome; the solid acid is easy to separate and can be repeatedly utilized, so that the low-cost, environment-friendly and high-efficient new technique provided by the invention can be directly used for industrialized clean production of the diosgenin.
Owner:GUANGDONG UNIV OF TECH

Method for interplanting stropharia rugoso-annulata in kiwifruit orchard

The invention provides a method for interplanting stropharia rugoso-annulata in a kiwifruit orchard. Kiwifruit branchlet sawdust, straw and diosgenin waste residues and waste acid water are adopted as raw materials. The method comprises the steps of raw material processing, raw material soaking, culture medium preparation, composting fermentation, cultivation season and land selection, land arrangement, insect killing, material paving and seed sowing, hyphae period management, fruiting period management, harvesting and culture medium orchard return processing. The method is characterized in that the kiwifruit branchlet sawdust, cut rice, wheat and corn stalk are mixed and soaked to be mixed with turf and wheat bran for fermentation so that a culture medium can be prepared, waste acid water generated by diosgenin is used for adjusting the pH value of soil, the biological conversion rate is increased, the novel approach is provided for comprehensive development and utilization of waste, and environmental pollution is reduced; the combined, three-dimensional, ecological and efficient cultivation mode for interplanting stropharia rugoso-annulata in the kiwifruit orchard is adopted, so that the land utilization rate is increased, and the effect of harvesting and complementing fungi and fruits is achieved.
Owner:HANZHONG AGRI SCI INST SHAANXI RICE RES INST

Supercritical CO2 fluid extraction method for directly extracting dehydroepiandrosterone from sweet potato

The invention discloses a method for directly extracting dehydroepiandrosterone from sweet potato. According to the invention, sweet potatoes are cleaned and are ground into a raw pulp; a fermentation treatment is carried out; cellulase and amylase are added, such that hydrolysis is fully carried out; an obtained hydrolysis product is dried; the dried product is ball-milled into powder; supercritical CO2 fluid extraction is carried out; and the content of an extraction product is analyzed with a high performance liquid chromatography method. According to current industry, a dehydroepiandrosterone production method comprises the following steps: diosgenin is extracted from turmeric; and diosgenin is converted into dehydroepiandrosterone with a chemical synthesis method. The structure and chemical properties of the synthesized dehydroepiandrosterone are hard to be kept consistent with those of natural dehydroepiandrosterone. The extraction raw material adopted by the invention is sweet potato which has rich source and low price. The method overcomes defects of traditional processing methods, and has the advantages of simple process, high extraction efficiency, high product purity and no environmental pollution. The extraction product is fully natural dehydroepiandrosterone. The method provided by the invention is an ideal green processing and resource optimal utilization novel technology.
Owner:WUXI MEDER BIOTECH CO LTD

Industrial wastewater treatment method during diosgenin production process

The invention relates to an industrial wastewater treatment method during diosgenin production process. In the industrial wastewater treatment method provided by the invention, according to water quality, the wastewater produced during diosgenin production process enters a hydrolysis waste liquid pretreatment system, a hydrolysate washing wastewater treatment system, a Rhizoma Dioscoreae Zingiberensis washing wastewater treatment system or a sludge treatment system for treatment; percolate produced from the hydrolysis waste liquid pretreatment system is treated through the hydrolysate washingwastewater treatment system; sludge produced from a first-stage up-flow anaerobic sludge bed (UASB), a second-stage UASB and a coagulation settling tank of the hydrolysate washing wastewater treatment system is treated by the sludge treatment system; supernatant from the Rhizoma Dioscoreae Zingiberensis washing wastewater treatment system is returned to Rhizoma Dioscoreae Zingiberensis washing process, while the bottom sludge is dried by an acid liquid drying yard of the hydrolysis waste liquid pretreatment system and then delivered out. The method adopts different treatment processes for wastewater of different water qualities, to improve pollutant removal rate, reduce operation cost, and guarantee up-to-standard water discharge.
Owner:陕西省环境科学研究院
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