53 results about "Ammonium lactate" patented technology

A method for fermentation of lactic acid from a sugar-containing fermentation liquid in a fermentor by means of lactic acid-forming bacteria, in which whey protein is present or is added as a nutrient substrate for the lactic acid-forming bacteria, wherein at least one protease is added to the fermentor during the fermentation, so that hydrolysis of protein to amino acids takes place simultaneously with the fermentation of sugar into organic acid, and wherein lactic acid resulting from the fermentation is isolated from the fermentation liquid. Ammonia is preferably added to result in the formation of ammonium lactate, and lactic acid is preferably isolated by a process comprising ultra filtration, ion exchange, conventional electrodialysis and electrodialysis with bipolar membranes.

A method for recovery of highly pure alkyl lactate and lactic acid is provided, which includes a step 1 for producing source liquid comprising lactic acid or ammonium lactate; a step 2 for dehydrating the source liquid product of step 1; a step 3 for producing liquid mixture by sequentially adding and stirring alcohol and acid solution to the dehydrated source liquid; a step 4 for separating and removing ammonium salt precipitation from the liquid mixture of step 3; a step 5 for producing alkyl lactate from ammonium salt-free liquid mixture by esterification reaction; and a step 6 for separating alcohol and alkyl lactate by distillation from the mixture of step 5.

The invention discloses a moisturizing repair composition containing ceramide and phytosterol and a preparation method thereof and belongs to the field of cosmetics. The moisturizing repair composition is prepared from the following components in percent by mass: 0.01-5% of ceramide, 0.1-0.5% of phytosterol, 0.1-10% of shea butter, 0.5-10% of hydroxyethylurea, 0.1-6% of ammonium lactate, 1-30% ofa polyhydric alcohol moisturizing agent, 1-5% of an emulsifier, 1-20% of skin moistening grease, a proper amount of a thickener, essence and a preservative and the balance water, totaling 100%. The composition is an emulsified body which contains ceramide as the primary natural moisturizing factor of human skin and phytosterol and shea butter originated from plants, so that the composition has good moisturizing and repairing action, can keep the skin moisten and flexible and smooth, and can resist damage of outside severe climate environment to the skin.

The present invention provides a method for consistently producing lactide from ammonium lactate obtained by lactic acid fermentation, and a method for consistently producing polylactic acid from ammonium lactate obtained by lactic acid fermentation. The production method of lactide is as follows: (1) synthesis of lactate from ammonium lactate obtained by lactic acid fermentation; (2) polycondensation of the lactate in the presence of a catalyst other than butyltin to synthesize polysaccharides with a weight average molecular weight of less than 15,000. Lactic acid (lactic acid prepolymer); (3) depolymerize the polylactic acid to generate lactide. Also, (4) a method for producing polylactic acid by ring-opening polymerization of the lactide to obtain polylactic acid. And a method for producing lactate from ammonium lactate obtained by lactic acid fermentation.

Pharmaceutical, cosmetic and cosmeceutical compositions for topical application, containing, as an active ingredient, ammonium lactate and/or any other alpha-hydroxy carboxylic acid and/or salts thereof, processes of manufacturing these compositions and uses of these compositions in the treatment of medical and cosmetic conditions such as conditions associated with dry skin or scalp.

The invention relates to a calcium salt method-electrodialysis coupling technology-based lactic acid cleaner production method. The method comprises the following steps that 1, the pH value of fermentation broth is still adjusted through CaCO3 in a lactic acid fermentation stage; 2, calcium lactate-containing lactic acid fermentation broth and ammonium carbonate, sodium carbonate or potassium carbonate undergo a precipitation displacement reaction to form fermentation broth containing ammonium lactate, sodium lactate or potassium lactate, and calcium carbonate precipitates; and 3, the fermentation broth containing ammonium lactate, sodium lactate or potassium lactate is treated into lactic acid-containing solution and regenerated NH3 solution, NaOH solution or KOH solution through a bipolar membrane electrodialysis technology. The method provided by the invention can overcome the defect that calcium sulfate waste residues can be produced in the existing production technology-based lactic acid production, be directly linked up with the existing lactic acid fermentation step (adopting calcium carbonate to adjust a pH value), and realize closed cycle use of materials.

The invention discloses a method for extracting and separating L-lactic acid from an ammonium lactate fermentation material liquid. The method comprises the following steps: (1) pre-treating the ammonium lactate fermentation material liquid; (2) carrying out sulphuric acidolysis on ammonium lactate; (3) adding an acidolysis material liquid and a coupling adsorbent in a centrifugal extractor respectively, and extracting L-lactic acid through coupling adsorption at 15-25 DEG C; (4) separating an organic phase from a water phase; and (5) adding the organic phase and hot water at 55-65 DEG C in the centrifugal extractor respectively, and extracting L-lactic acid through backcoupling adsorption. The method disclosed by the invention is capable of rapidly extracting and separating L-lactic acid from the lactic acid acidolysis liquid, changing the process route of separating various impurities from L-lactic acid one by one, and directly separating L-lactic acid through coupling adsorption by virtue of a coupling adsorption agent so as to leave the various impurities in a raffinate; because the coupling adsorption agent in the method disclosed by the invention has a specific adsorption property on L-lactic acid, the purpose of further purifying L-lactic acid is achieved, and a decolouring process and most of hybridization processes in the existing processes are removed.

The ferric chloride modification ion exchange resin catalyst and the preparation method and application is provided, which relates to a catalyst and the preparation method and application. In order to solve the problem of the existing ammonium lactate catalyst with complicated preparation techniques, high production cost and low ammonium lactate catalyzing esterification efficiency. The catalyst is made of hydrogenous strong acid cation exchange resin and butanol solution of ferric chloride. The preparation method of the catalyst is realized by the following method: firstly, washing resin and drying; secondly, prepare compound resin; thirdly, proceed alcohol washing and acetone washing to compound resin and then dry, the ferric chloride modification ion exchange resin catalyst can be achieved. The catalyst is used in the ammonium lactate esterification reaction, which has simple preparation techniques, the cost is reduced by 5 to 8 per cent and the ammonium lactate esterification rate can reach 78 to 96 per cent.

A process for the production of hemicellulose derived monosaccharides comprising: (a) contacting an aqueous hemicellulosic stream with a C_3-8 alkyl alcohol at elevated temperature and acidic pH to produce a reaction mixture comprising at C_3-8 alkyl ester and a hemicellulose-derived monosaccharide; and (b) separating the reaction mixture obtained from step (a) into an aqueous phase comprising said hemicellulose-derived monosaccharide and an organic phase comprising said C_3-08 alkyl ester. The product of step (b) may be further processed using an optional step: (c) reacting said hemicellulose-derived monosaccharide obtained from step (b) with a metal hydroxide or a quaternary ammonium hydroxide to produce a metal lactate or quaternary ammonium lactate.

The invention discloses a method for separation and purification of D-lactic acid from D-ammonium lactate fermentation broth. The method includes the following steps in order: 1) conducting solid-liquid separation and removal of protein and pigment on D-ammonium lactate fermentation broth to obtain clarified fermentation broth; 2) concentrating the clarified fermentation broth obtained in step 1);3) conducting acidification and crystallization operations on the concentrated fermentation broth obtained in step 2); 4) filtering the liquid-solid mixture obtained in step 3) to obtain the by-product ammonium sulfate; 5) subjecting the crystalized fermentation broth containing D-lactic acid to ion exchange; 6) carrying out nanofiltration decolorization on the fermentation broth subjected to ionexchange; and 7) concentrating the fermentation broth subjected to nanofiltration so as to obtain D-lactic acid. The D-lactic acid extraction method has the characteristics of simplicity, easy operation, no waste liquid pollution, low energy consumption, high recovery and high product quality.

The present invention relates to an industrial process for producing a lactic ester containing in total at least seven carbon atoms, from a fermentation liquor containing ammonium lactate in order to avoid the inherent production of gypsum, with a high yield and according to which the loss of lactic ester in the form of lactamide is limited as much as possible.

Certain example embodiments of this invention relate to the deposition of coatings onto substrates via combustion deposition. An aqueous precursor solution is used in connection with combustion deposition for the deposition of coatings onto a substrate. In certain example embodiments, the aqueous precursor solution may be an organic salt (e.g., of titanium, such as titanium (IV) bis(ammonium lactate)dihydroxide (aq)), an oxalic acid salts of titanium (e.g., potassium titanyl oxalate (e.g., K₂TiO(C₂O₄)₂.2H₂O or other suitable stoichiometry) and Ti₂(C₂O₄)₃.10H₂O), a water soluble salts of titanium acetate and titanium citrate, etc., which may enable a titanium oxide (e.g., TiO₂ or other suitable stoichiometry) coating to be deposited onto a glass substrate. The deposited TiO₂ coating may be of high refractive index and may possess photocatalytic and/or super-hydrophilic properties. Thus, certain example embodiments advantageously may be used for the inexpensive, easy to handle, and environmentally friendly production of, for example, multilayer AR (MLAR) designs and low maintenance glass applications.

The invention discloses a heavy metal soil remediation agent. The heavy metal soil remediation agent is prepared from, by weight, 10-20 parts of edible fungus culture medium waste, 5-10 parts of urea,5-8 parts of starfish steroidal saponins, 2-8 parts of picfeltarraenin IA, 8-15 parts of vesica fusca sepiae, 2-5 parts of citronellal, 5-8 parts of maca, 2-6 parts of radix aconiti lateralis preparata, 2-6 parts of raspberry, 2-5 parts of carrot leaves, 1-3 parts of sugarbeet pulp, 1-3 parts of ammonium lactate, 1-3 parts of fulvic acid, 1-2 parts of additives and 60-100 parts of water. The heavy metal soil remediation agent is capable of effectively reducing the content of cadmium in an aboveground portion and an underground portion and has great heavy metal contamination treatment effects;by adoption of the edible fungus culture medium waste as a raw material, the utilization rate of the edible fungus culture medium waste is increased, and waste recycling is realized, so that energy saving and environmental friendliness are realized.

The invention relates binary catalysis system and its application in ammonlum lactate esterification reaction, and the method for preparation of magnetism solid acid catalyst in the said catalysis system. It solves the problem of magnetism solid acid catalyst not suiting ammonlum lactate esterification. In the invention the binary catalysis system comprises the magnetism solid acid catalyst and tin dichloride, the proportion by weight of which is 20: 1-1: 20. The method for making magnetism solid acid catalyst comprises the following steps: 1. adding ammonia into ferric persulfate solution; 2. solid-liquid separation, drying and powdering the solid; 3.adding the powder into the nickel sulfate solution; 4. evaporating to dryness and roasting; 5. cooling. The said catalysis system is used in ammonlum lactate esterification reaction, comprising the following proportion: a. the mass ratio of ammonium lactate and the C1-C4 alcohol being 10í†1-1í†10; b. the weight ratio of catalysis system and ammonium lactate being 0.005-5úÑ, and the magnetism solid acid catalyst and tin dichloride being 20í†1-1í†20; c. the esterification reaction reacting in atmosphere pressure, at 115-140íµ, for 3.5-11h. The invention has good selectivity, adapted for ammonlum lactate esterification reaction.

The invention belongs to the technical field of pharmaceutical and chemical engineering, and relates to a preparation method of ammonium lactate solids, in particular to a method for changing an ammonium lactate solution into the ammonium lactate solids. The preparation method of the ammonium lactate solids mainly comprises steps as follows: 1) preparation of the ammonium lactate solution : a lactic acid solution reacts with ammonia water to produce the ammonium lactate solution; 2) preparation of a concentrated ammonium lactate solution : the ammonium lactate solution is extracted with acetonitrile and concentrated, and the concentrated ammonium lactate solution is obtained; 3) preparation of the ammonium lactate solids: the concentrated ammonium lactate solution is dissolved in ethanol, acetonitrile, acetone or a acetonitrile and acetone mixed solution is added, and the solids are precipitated. The ammonium lactate solid products prepared with the preparation method of the ammonium lactate solids are high in purity, good in stability, easy to store and transport and suitable for mass industrial production.

The present invention comprises ternary compositions of tamibarotene and/or ammonium lactate in Pemulen for treatment of effects of aging.

The invention provides a self-induction-based method for biomimetic titanification of immobilized protease. Immobilization of the protease is achieved in the induced biomimetic titanification process by using the inductive effect of papain on biomimetic titanification of a titanium precursor dihydroxy bis(ammonium lactate) titanium to obtain the immobilized protease employing titanium oxide as a carrier. The defects that a traditional immobilization method is complicated in immobilization process, the immobilized protease is poor in biocompatibility of an enzyme and the carrier, relatively weak in bonding action with the carrier, poor in stability and short in service life, and the immobilization reaction is relatively violent and easily causes enzyme inactivation and activity reduction are overcome, and the method has the advantages of being simple in immobilization process, mild in condition, high in efficiency, good in enzyme recovery rate of the immobilized protease and good in embedding rate.

The invention belongs to the technical field of skin care and health care products, particularly relates to a sustained-release microcapsule wrapping traditional Chinese medicine extract and a preparation method and application thereof, and solves the problems that in the prior art, the traditional Chinese medicine extract is directly added into a skin care product to be mixed and emulsified for use, due to the special chemical structure of traditional Chinese medicine active ingredients, the biological activity on the skin surface is extremely easy to lose, the active ingredients cannot reach the deep layer of the skin, cannot repair the skin barrier and cannot achieve a remarkable skin care effect. The sustained-release microcapsule wrapping the traditional Chinese medicine extract comprises a capsule core material and a capsule material wrapping the capsule core material; the capsule core material is prepared by mixing and compounding a traditional Chinese medicine extract, ascorbyl palmitate and xylitol fatty acid ester; the capsule material is prepared by mixing and compounding fatty acid sucrose polyester, ammonium lactate, hydroxy propyl distarch phosphate and ethyl p-hydroxybenzoate. The microcapsule can effectively ensure that the active ingredients of the traditional Chinese medicines can abut against the deep layer of the skin and are slowly released, thereby playing a role in repairing the skin barrier.