32 results about "Acid inhibition" patented technology

Thickened aqueous compositions, and a method for controlling viscosity drift for thickened aqueous compositions comprising a pigment, a copolymer containing polymerized units of phosphate- or phosphonate-containing monomers, and an acid suppressible thickener.

The invention provides a novel multilayer coating system enteric preparation for dexlansoprazole. The preparation comprises a drug layer I, a drug layer II, enteric coating layers IV and isolating layers III, wherein the isolating layers III are arranged among the drug layer I or II and the enteric coating layers IV, the drug layer I and the drug layer II are respectively composed of dexlansoprazole, a filler, a binder, a stabilizing agent and a lubricant, and the preparation comprises, from interior to exterior, the drug layer I, the isolating layer III-1, the enteric coating layer IV-1, the isolating layer III-2, the drug layer II, the isolating layer III-3 and the enteric coating layer IV-2. The novel multilayer coating system enteric preparation for dexlansoprazole provided by the invention can improve the acid inhibition effect of dexlansoprazole and prolongs action time of dexlansoprazole, the isolation effect of the isolating layers in the whole preparation system is optimized, and stability of product quality is ensured; and a preparation method provided by the invention is applicable to industrial production and has a great application value.

The invention discloses a culture medium for screening nitrogen sources suitable for bifidobacterium proliferation, and belongs to the technical field of fermentation engineering. Culture mediums of different nitrogen sources can be prepared and obtained by using the culture medium formula of the invention, in the culture mediums of different nitrogen sources, the pH value of the fermentation liquid is not less than 4.5 when the bacterial concentration of bifidobacterium adolescentis Z25 and bifidobacterium bifidum F35 is the highest, and the glucose content is not less than 2.0g / L. Moreover,the osmotic pressure of the culture medium is 300-400 mOsm / kg, indicating that the growth of bacteria is stopped because the effective nitrogen source is completely utilized, not because of lack of carbon source or acid or osmotic pressure inhibition. Therefore, the growth rate of bacterial strains using different nitrogen sources and the increment of strains using different nitrogen sources per unit mass can be clearly judged. The problems of traditional batch culture acid inhibition, substrate deficiency inhibition or osmotic pressure inhibition, and osmotic pressure inhibition of nitrogen source screened by sugar supplementation culture at constant pH in fermentation tank can not accurately analyze the screening of effective nitrogen sources are solved.

The invention provides a method for producing marsh gas by two-phase dry-type mixed anaerobic fermentation, belonging to the technical field of renewable energy sources. The method mainly comprises the following steps: ethanol prefermentation: inoculating a certain amount of dried yeast into kitchen waste to carry out ethanol prefermentation; and methane fermentation: mixing the kitchen waste subjected to ethanol prefermentation and vinasse in a ratio of 1:1 (on the basis of VS) as a substrate for subsequent anaerobic fermentation, and inoculating long-term acclimatized sludge in a ratio of 1:1 (sludge:substrate (on the basis of VS)). The method searches the possibility of optimizing methane anaerobic fermentation by ethanol prefermentation, and optimizes the experimental conditions for ethanol prefermentation. The method can effectively relieve the problem of volatile acid inhibition in the anaerobic digestion process, and obviously enhances the methane yield, thereby enhancing the energy recovery rate. The method is simple to operate, and thus, has high practical value.

The invention relates to a method for controlling the anaerobic digestion of easily-degradable organic wastes through utilizing intermittent micro-aeration. The method comprises the following steps: installing a micro-aeration apparatus at the bottom of an anaerobic digestion reactor; carrying out intermittent micro-aeration treatment of the anaerobic digestion reactor; stopping the intermittent micro-aeration after the anaerobic digestion process runs well and methane is stably produced; and carrying out intermittent micro-aeration of the anaerobic digestion reactor again if an acid inhibition phenomenon or an ammonia nitrogen inhibition phenomenon appears in the anaerobic digestion process. Compared with the prior art, the method provided by the invention, which allows the easily-degradable organic wastes to undergo intermittent micro-aeration in the anaerobic digestion process, utilizes excess organic acids generated in the hydrolysis acidifying process of anaerobic bacteria to maintain the pH value of a reaction system in a neutral range, so the acid inhibition on methane bacteria produced by the wastes is released. The formation of three-dimensional-distribution aerobic and anaerobic areas of the intermittent micro-aeration in the reaction system makes ammonia nitrogen generated through the anaerobic digestion be simultaneously nitrated and denitrified, so the wastes are effectively removed.

The invention relates to a biomedical material for treating gastric ulcer and a preparation method thereof, relating to the field of medicine. The preparation method is obtained by coating the surface of the first sample with polydopamine after the outer surface of the pollen wall is loaded with calcium carbonate to form the first sample, and the operation is simple and reliable. The biomedical material for treating gastric ulcer provided by the invention can exert the effects of anti-oxidation, anti-inflammation, neutralization of gastric acid and inhibition of ulcer enlargement at the site of gastric ulcer wound formation.

The invention discloses a method for producing lactic acid and simultaneously realizing coupling preparation of GABA (gamma-aminobutyric acid). The method comprises the steps of inoculating rhizopus oryzae into a fermentation culture medium to perform fermentation, adding glutamic acid decarboxylase, pyridoxal phosphate and L-sodium glutamate into a fermentation solution when the pH value of the fermentation solution is less than 4.8, then continuously adding L-sodium glutamate into the fermentation solution, and generating GABA of glutamic acid decarboxylase by utilizing the vitality of catalyzing glutamic acid to consume H+ in an environment so as to maintain the pH value of the fermentation solution at 4.8-6.0 and achieve the purposes of relieving acid inhibition against fermentation of lactic acid and realizing simultaneous production of lactic acid and GABA. The invention provides a new method for relieving the inhibition of a substrate for fermentation of lactic acid; furthermore, in the fermentation process, the coupling production of a functional compound, namely gamma-aminobutyric acid, is realized, so that the yield of lactic acid is increased, and the economy of the process is further improved.