12896 results about "Lactic acid" patented technology

A high flux in conversion of pyruvate to acetolactate was achieved in yeast through expression of acetolactate synthase in the cytosol in conjunction with reduction in pyruvate decarboxylase activity. Additional manipulations to improve flux to acetolactate are reduced pyruvate dehydrogenase activity and reduced glycerol-3-phosphate dehydrogenase activity. Production of compounds having acetolactate as an upstream intermediate benefit from the increased conversion of pruvate to acetolactate in the described strains.

Coatings for an implantable medical device and a method of fabricating thereof are disclosed, the coatings comprising polymers of lactic acid.

<heading lvl="0">Abstract of Disclosure</heading> A small volume sensor, and methods of making, for determining the concentration of an analyte, such as glucose or lactate, in a biological fluid, such as blood or serum, using techniques such as coulometry, amperometry, and potentiometry. The sensor includes a working electrode and a counter electrode, and can include an insertion monitoring trace to determine correct positioning of the sensor in a connector.

Disclosed are methods for non-destructively measuring in vitro the effect on cellular metabolism of the addition to animal cells in culture of a soluble molecule potentially capable of perturbing the biological state of the cells, such as a drug or drug candidate, a toxin, a ligand known or suspected to bind to a cell surface receptor, a nutrient, a cytokine, a growth factor, a chemokine, a metabolism inhibitor or stimulator. Also disclosed are methods for measuring cell viability, vitality, or quality, e.g., in anticipation of the execution of an experiment on the cells. The measurements are done by observing alteration in the rates of consumption or production of extracellular solutes related to aerobic and anaerobic cellular metabolism, such as oxygen, protons, nutrients, carbon dioxide, lactate, or lactic acid. The methods are particularly useful in drug discovery efforts, such as cancer drug discovery and searches for modulators of cellular metabolism.

Yogurt containing lactic acid bacteria and Bifidobacteria, to which one or more kinds of sweet substances selected from a group consisting of palatinose, palatinite, maltose, maltitol, starch syrup, reducing starch syrup and trehalose as well as a refined fish oil containing highly unsaturated fatty acids such as DHA and EPA are added, is packed in an oxygen blocking hermetic package. The yogurt contains highly unsaturated fatty acids and has good flavor and taste, as well as excellent product quality stability, and does not generate a fishy odor during normal storage periods.

The invention relates to a preparation method of a biological detergent. The biological detergent is prepared by mixing APG (C8-16), maltose, ethanol, composite amino acid, aloe, chitin, salt, probiotics, lactic acid, spice and water. According to the method, the maltose serving as a main raw material, the APG biosurfactant and the probiotics are subjected to biochemical reaction to form various biological resolvase under the auxiliary edge action of the chitin. The process comprises the following steps of: preparing the maltose, the APG and the water according to the percentage; adding the probiotics and the chitin and mixing; stirring uniformly; performing sealed fermentation for 48 to 72 hours; adding the ethanol, the composite amino acid, the aloe, the lactic acid and the spice, and mixing and stirring uniformly; adding the salt and mixing; and standing for 24 hours. The biological detergent has a good pollutant-removing effect and a wide using range, does not damage a human body, protects objects, prolongs the service life of the objects, and is safe and environment-friendly.

A conjugate vaccine for Neisseria meningitidis comprising lipooligosaccharide which does not contain a lacto-N-tetraose antigen from which at least one primary O-linked fatty acid has been removed conjugated to an immunogenic carrier. The vaccine is useful for prevention of meningitis and septic shock in mammals.

The invention discloses a fruit and vegetable jam and a preparation method thereof. The fruit and vegetable jam is characterized by being prepared from the following components: 50-99.8% of fruit and vegetable concentrated pulps, 0.01-0.5% of Sodium D-isoascorbate or vitamin C, 0.01-0.5% of citric acid and 0-49.8% of syrup or substitute sugar. The preparation method comprises the following steps:pulping or juicing fruits and vegetables, and then concentrating the pulped or juiced fruits and vegetables 0-10 times; evenly stirring the components in proportion, and sterilizing the components atthe temperature of 75-132 DEG C for 2 seconds-50 minutes; and cooling the sterilized fruit and vegetable pulp to 20-45 DEG C, inoculating lactic acid bacteria into the sterilized and cooled fruit andvegetable pulp at a ratio of 103-109 cfu/mL, and fermenting the pulp at the temperature of 25-45 DEG C for 6-96 hours until the pH value is 2.5-5.0. The method has the following characteristics: (1) obtaining natural tender tart flavor is obtained, the astringent flavor of the fruits and the wild artemisia flavor of the vegetables are effectively removed; (2) by means of lactic acid bacteria fermentation, the content of amino acid in the fruits and vegetables can be improved by more than 20%, the contents of substances with special flavor are improved by more than 30%, and the flavor and taste of products are effectively improved; (3) nutrient components in the fruits and vegetables, such as vitamins, dietary fibers and the like, in the fruits and vegetables are fully maintained; and (4) the quality guarantee period of food is prolonged, and corruption is avoided.

According to the invention there is provided a strain of lactic acid bacteria of the species Bifidobacteria pseudolongum obtainable by isolation from resected and washed canine gastrointestinal tract having a probiotic activity in animals. Methods of use and compositions comprising the Bifidobacteria pseudolongum of the present invention are also provided.

Natural beverage products and methods for making the same are disclosed. The natural beverage products comprise an acidulant comprising lactic acid and at least one of tartaric and citric acids, optionally other natural carboxylic acids and no phosphoric acid.

The invention discloses an enteric-solubility multilayer encysted bacterium microcapsule and making method in the biological agent technical domain, which is characterized by the following: adopting sodium alginate, calcium chloride and chitose as clad material of microcapsule; making lactic acid bacteria or bifidobacteria as core-clad material; proceeding ionic exchange for sodium alginate and calcium chloride; forming second clad on the surface of calcium alginate through different isoelectric points of calcium alginate and chitose; freezing at low temperature to obtain the product.

The invention discloses pressure lowering and lipid lowering sweet corn soup and a preparation method thereof. The pressure lowering and lipid lowering sweet corn soup consists of the following raw materials in parts by weight: 40-50 parts of corn, 10-15 parts of oat, 5-10 parts of leek, 5-10 parts of pawpaw, 5-8 parts of cucumber, 4-6 parts of celery, 5-8 parts of chicken meal, 3-5 parts of coix seed, 3-4 parts of tangerine peel, 2-4 parts of mulberry leaf, 1-3 parts of cochinchinese asparagus root, 2-3 parts of ginkgo leaf, 1-3 parts of gynostemma pentaphyllum, 2-4 parts of medlar, 1-3 parts of egg, 2-3 parts of lactic acid bacteria tablet, 5-6 parts of grape juice and 5-7 parts of nutritional additive. The pressure lowering and lipid lowering sweet corn soup prepared by the invention is convenient to store, carry and eat, can be eaten after a can is opened, contains various nutrient substances, is rich in nutrition, has good mouthfeel, can also lower the lipid and can be eaten by various kinds of people; the formula contains natural plant compositions such as the tangerine peel, the mulberry leaf, the cochinchinese asparagus root and ginkgo leaf; the sweet corn soup has the effects of lowering lipid, lowering pressure, tonifying lung, strengthening spleen, protecting liver and nourishing kidney, can be eaten for a long time, can nourish the five internal organs, improves the immunity and has a health care effect of strengthening the body.

Fluids comprising an aqueous acid, synthetic polymer, metal crosslinking agent and lactic acid or a salt thereof have particular applicability in fracturing subterranean formations of an oil or gas well. The lactic acid acts as a delaying agent. As a result, crosslinking of the synthetic polymer and metal crosslinking agent typically occurs at a temperature of 100° F. or higher.

The invention discloses a molecular sieve based catalyst, a preparation method and an application thereof in crylic acid preparation by lactic acid dehydration. The method comprises the following steps: processing the ZSM-5 molecular sieve in aqueous alkali, or adopting an impregnation method to support phosphate, drying, roasting and finally obtaining the modified molecular sieve based catalyst. The catalyst realizes the reaction of crylic acid preparation by lactic acid dehydration in low temperature and has the advantages of high lactic acid conversion rate and crylic acid selectivity, and long-life of catalyst, the conversion rate of lactic acid dehydration reaction is 100%, and crylic acid selectivity can reach as high as 83.9%, thus having good industrial application prospect.

The present invention comprises the discovery and development of an effective cryoprotectant composition, without containing skim milk or any other animal-derived compounds, to achieve long-term stability of freeze-dried lactic acid bacteria (LAB), at different temperatures, whereby the retention of viability of the freeze-dried LAB after 6 months of storage, preferably after 9 months of storage, more preferably after 12 months of storage is more than 50%. The invention is in the field of producing freeze dried bacteria, in particular Lactic acid bacteria. More in particular, the invention relates to the use of a novel combination of cryoprotectants for increasing the viability of bacteria after freeze drying, improving the texture of the lyofilized cake for easy grinding and improving the long term stability of the freeze dried bacteria at different temperature conditions. The invention further relates to such freeze dried bacteria for use in food industry or in human or animal health applications. More in particular, the invention relates to the increased viability and long-term storage of recombinant bacteria capable of expressing heterologous proteins or peptides and administered to humans or animals for therapeutic or vaccination purposes.

Packaging laminate for packages for liquid foods having excellent liquid and oxygen gas barrier properties in which all included layers are biodegradable. The packaging laminate includes at least one liquidtight layer (11, 13) of homo or copolymers of monomers selected from a group consisting of lactic acid, glycol acid, lactide, glycolide, hydroxy butyric acid, hydroxy valeric acid, hydroxy caproic acid, valerolactone, butyrolactone and caprolactone, as well as an oxygen gas barrier layer (12) of ethylene vinyl alcohol, polyvinyl alcohol, starch or starch derivatives. The oxygen gas barrier layer is preferably applied by a dispersion coating process. The layers may be laminated directly to one another or indirectly by means of interjacent adhesive layers. The packaging laminate may also include a core layer of, for example, paper or paperboard, or a biopolymer. The invention also realises a method of producing the biodegradable packaging laminate according to the invention.

A method of treating a well consists of introducing into the wellbore a biodegradable fluid system containing a blend of lactic acid ester, such as ethyl lactate, and a fatty acid ester, such as methyl soyate. The fluid system may be further in the form of a microemulsion that is formed by combining a blend with one or more emulsifiers, an alcohol, and water. The fluid system may be used in displacement, well remediation and stimulation as well as additional, alternative applications such as the cleaning of surface and/or downhole equipment.

A yeast strain, wherein the yeast strain is transformed with at least one copy of a gene coding for <SMALLCAPS>D</SMALLCAPS>-lactate dehydrogenase functionally linked to a promoter sequence allowing the expression of the gene in the yeast strain and the yeast strain has undergone disruption of one or more pyruvate decarboxylase genes or pyruvate dehydrogenase genes. Also, a method of producing <SMALLCAPS>D</SMALLCAPS>-lactic acid including culturing such a yeast strain in a medium and recovering <SMALLCAPS>D</SMALLCAPS>-lactic acid.

Certain applicator liquids and application techniques are described, which can be used to form nanotube films or fabrics of controlled properties. An applicator liquid for preparation of a nanotube film or fabric includes a controlled concentration of nanotubes dispersed in ethyl lactate. The controlled concentration is sufficient to form a nanotube fabric or film of preselected density and uniformity.

The subject invention relates to newly isolated organisms from nature that produce L(+)-lactic acid high yield from hexose and pentose sugars found in biomass. Organisms and processes or methods for the production of lactic acid and other industrially important chemicals from cellulose and hemicellulose are also provided.

The invention discloses a process for preparing viable bacteria enzyme. The process comprises the following steps of: respectively adding aspergillus oryzae, ganoderma lucidum, bacillus subtilis, lactic acid bacteria and saccharomycetes into vegetables and fruits to ferment so as to obtain a vegetable ferment basic solution and a fruit ferment basic solution; vaccinating the bacillus subtilis, yeast and the lactic acid bacteria by using edible fungus to ferment so as to obtain an edible fungus ferment basic solution; vaccinating the ganoderma lucidum, the bacillus subtilis, the saccharomycetes and the lactic acid bacteria by using perennial herbs to ferment so as to obtain a herbal enzyme solution; inoculating the bacillus subtilis, the yeast and the lactic acid bacteria to ferment so as to obtain an algae ferment basic solution; and inoculating bifidobacterium, bacillus natto and bacillus aceticus to carry out secondary fermentation after combining filtrates, and then sealing for ageing for 2 months, so as to obtain the aged viable bacteria enzyme. According to the process provided by the invention, mixed fungi generation can be effectively reduced; macro-molecular substances are rapidly resolved to micro-molecular substances which can be easily absorbed by a human body; and the problem that the substances are difficult to digest and inactivate in severe environments of intestinal canals can be solved. Furthermore, the content of functional active components can be greatly improved, and various health benefits and high added value of the enzymes can be effectively improved.

Toughened polyoxymethylene-poly(lactic acid) resin compositions comprising polyoxymethylene, poly(lactic acid), and an impact modifier comprising an ethylene copolymer impact modifier made from monomers (a) ethylene; (b) one or more olefins of the formula CH₂═C(R¹)CO₂R², where R¹ is hydrogen or an alkyl group with 2-8 carbon atoms and R² is an alkyl group with 1-8 carbon atoms, such as methyl, ethyl, or butyl; and (c) one or more olefins of the formula CH₂═C(R³)CO₂R⁴, where R³ is hydrogen or an alkyl group with 1-6 carbon atoms, such as methyl, and R⁴ is glycidyl. The ethylene copolymer impact modifier may further be made from carbon monoxide monomers. The compositions may further comprise one or more ethylene/acrylate and/or ethylene/vinyl ester polymers, ionomers, and cationic grafting agents.