42 results about "Ph regulation" patented technology

The invention discloses a green preparation method for realizing a high-performance chitosan film through pH regulation and control of a citric acid buffering agent, and belongs to the field of food packaging and high polymer materials. According to the method, a water phase separation method is adopted, a citric acid buffering agent serves as a water phase environment, and a chitosan solution is induced to be subjected to phase separation and gelation by regulating and controlling the pH value (preferably 5.0-5.5) of the citric acid buffering agent. The preparation method comprises the following specific steps: dissolving chitosan powder in an alkali urea solvent (KOH: urea: water = 7: 12: 81), inducing gelation through a citric acid buffer agent, carrying out solvent replacement through an ethanol solution, and drying and curing. According to the method, a chemical cross-linking agent does not need to be used, and the core is that a buffer system is used for regulating and controlling the phase separation process to promote aggregation among chitosan molecular chains, so that a compact physical structure network is constructed. The prepared chitosan film has excellent mechanical strength, water resistance, gas barrier property, biocompatibility and degradability, and is suitable for the fields of food, medicine packaging and the like.

The invention provides a method for synergistically removing impurities through pH regulation and complexing of ionic rare earth ore leachate, the ionic rare earth ore leachate is stirred and mixed uniformly, a plant polyphenol sulfonic acid derivative complexing agent is added, the complexing agent is prepared through sulfonation, neutralization, concentration and drying by taking gallic acid as a raw material, and the complexing agent can automatically regulate the pH value of the solution and stabilize the pH value at 5.1-5.3; under the condition, phenolic hydroxyl groups, carboxyl groups and sulfonic functional groups in complexing agent molecules preferentially form stable precipitates with impurity ions such as Al < 3 + > and Fe < 3 + > in the leachate, and the complexing effect with rare earth ions (RE < 3 + >) is weak; and after the reaction is completed, carrying out solid-liquid separation to obtain the purified leachate and impurity-containing precipitation slag. The method solves the problem of ammonia nitrogen pollution caused by use of ammonium bicarbonate, ammonia water and other ammonium salts in the traditional process, is a novel method with high impurity removal rate, simple process flow and environmental friendliness, and is suitable for industrial application.

The invention relates to the technical field of biological detection, and discloses a tyrosinase activity detection method based on in-situ fluorescence generation and application, and the method comprises the following steps: mixing L-tyrosine with 3-hydroxyphenylboronic acid; adding a biological enzyme sample solution, incubating at a constant temperature, and accumulating L-dopa by enzyme catalysis; then adding an alkaline adjusting solution to construct an alkaline environment, inducing the 3-hydroxyphenylboronic acid and L-dopa to generate a specific boric acid esterification reaction, and generating a fluorescent borate compound in situ; and finally, adding a constant-volume stop solution to maintain an alkaline environment and complement the volume, and detecting the fluorescence intensity. According to the method, a step-by-step pH regulation strategy is adopted, the enzyme activity is guaranteed under the neutral condition, then color development is promoted under the alkaline condition, and the problem that dynamic conditions of the two are incompatible is solved. The method has the advantages of low background interference, high sensitivity, good reproducibility and the like by utilizing specific recognition of a phenylboronic acid group on a catechol structure, and can be applied to food browning analysis, whitening drug screening and disease diagnosis.

The application provides a grey water PH regulating device, relates to the technical field of PH regulation, and comprises an adjusting tank and a filtering device, a water inlet pipe is fixedly connected to one side of the adjusting tank, a water outlet is fixedly connected to the lower end of the one side of the adjusting tank, a filtering device is arranged on the inner wall of the adjusting tank and corresponds to the position of the water inlet pipe, the filtering device comprises a filtering pipe, the two ends of the filtering pipe are slidably connected with the inner wall of the adjusting tank, mounting plates are fixedly connected to the two ends of the filtering pipe, sliding blocks are fixedly connected to the two sides of the mounting plates, sliding grooves are formed in the inner wall of the adjusting tank and correspond to the positions of the sliding blocks, and the surfaces of the sliding blocks are slidably connected with the inner walls of the sliding grooves. The filtering device, the stirring device and the gas exchange device are designed, so that the problem that the traditional filtering device is inconvenient to disassemble and clean, is easy to cause the mesh holes to be blocked by sundries, affects the water inflow, and has low PH regulation precision is solved.

The invention provides pH regulation systems of buffer-loaded hydrogels that can regulate pH of solutions for long periods of time. These pH-regulating hydrogels may be used in a variety of pH-dependent systems, including water treatment, agricultural soil, and biological applications. Demonstrated is an application in increasing the efficacy of weak base chemotherapeutics used for cancer treatments.

The utility model discloses a filtering device for low-concentration copper-containing wastewater. Comprising a grating tank used for collecting low-concentration copper-containing wastewater, a first pH adjusting tank communicated with the grating tank, a coagulation and flocculation tank communicated with the first pH adjusting tank, a first sedimentation tank communicated with the coagulation and flocculation tank, a second pH adjusting tank communicated with the first sedimentation tank, and a third pH adjusting tank communicated with the second sedimentation tank, a ceramic membrane filtration module used for filtering suspended solids is arranged between the first pH regulation tank and the coagulation flocculation tank, the first pH regulation tank is used for regulating the pH value of the low-concentration copper-containing wastewater to be weak acidic, and the second pH regulation tank is used for regulating the pH value of the low-concentration copper-containing wastewater to be weak acidic; according to the filtering device for the low-concentration copper-containing wastewater, disclosed by the utility model, the waste liquid containing medium-concentration and low-concentration copper ions is enriched and recycled, so that the pollutant emission can be reduced.

This invention discloses *Paenibacillus alvei* CHWJ-P3 for dissolving phosphorus and potassium in acidic soils and its applications. *Paenibacillus alvei* CHWJ-P3 is classified as *Paenibacillus alvei* CHWJ-P3 and was deposited at the China Center for Type Culture Collection (CCTCC) on December 8, 2025, with accession number CCTCC NO: M 20252813. The *Paenibacillus alvei* CHWJ-P3 of this invention exhibits a significant ability to dissolve phosphorus and potassium in the environment, along with high acid resistance and efficient pH regulation. It can be used for the release of insoluble phosphorus and potassium in soil, i.e., the bioremediation of phosphorus and potassium dissolution in acidic soils; and for the bioremediation of acidic soil pH regulation. It features high remediation efficiency, stable remediation effects, and no secondary pollution, demonstrating promising application prospects.

The utility model relates to the technical field of pure water pH regulation, and discloses a stable high-purity water pH regulation dosing device which comprises a pure water tank, a medicine box is fixedly arranged above the pure water tank, an opening is formed in the top of the pure water tank, a dosing pipe is fixedly arranged on the inner wall of the opening, the dosing pipe is communicated with the medicine box, a medicine storage chamber is arranged in the medicine box, and the medicine storage chamber is communicated with the pure water tank. A medicine discharging opening is formed in the bottom of the medicine storage chamber, the medicine adding pipe is located under the medicine discharging opening, a movable cavity is formed in the medicine box, and a sealing base is arranged on the inner wall of the movable cavity in a sliding mode. The regulating agent can be quantitatively added into the pure water tank, the situation that the pH value of high-purity water fluctuates greatly due to excessive agent adding amount is avoided, if the agent adding amount is insufficient, the flow guide opening continues to be moved to the position under the agent discharging opening for agent adding till the high-purity water reaches the proper pH value, and therefore the agent adding amount can be controlled according to the pH value of the high-purity water, and the effect of controlling the pH value of the high-purity water is achieved. The condition of excessive or insufficient dosing is effectively avoided, and the stability and precision of pH regulation are improved.

The invention discloses a wastewater treatment process optimization control system based on diversified analysis. The system comprises a wastewater segmented treatment module, a multi-source data acquisition module, a multi-target analysis decision module and a terminal regulation and control module. The method comprises the following steps: monitoring a plurality of processes such as pH regulation, Fenton reaction, neutralization reaction and flocculation precipitation reaction in series, obtaining an initial dosing rate of a medicament according to feed-forward water inlet data before reaction of each process, analyzing a process treatment effect based on feedback monitoring data in the reaction process, judging whether wastewater treatment of each process reaches the standard or not, and if so, judging whether the wastewater treatment reaches the standard or not. If the wastewater does not reach the standard, obtaining an agent adding correction value based on deviation analysis of feedback monitoring data, and based on a composite control mechanism of feedforward setting reference and feedback real-time fine adjustment, not only can cope with complex and changeable water inlet conditions in different wastewater treatment processes, but also can perform dynamic feedback optimization based on water quality fluctuation and reaction conditions; the intelligent dynamic dosing of the medicament is realized.

The invention belongs to the field of disinfection materials, and provides a skin disinfectant and a preparation method thereof.The skin disinfectant adopts the design that sodium hyaluronate and polyhexamethylene biguanide hydrochloride are subjected to ion complexation to form nanoparticles, and the nanoparticles are stably dispersed in an alcohol-based system; by accurately controlling the particle size of the nanoparticles, the component proportion and the pH regulation, the synergism of low-viscosity spraying and high-molecular film-forming moisturizing in a high-ethanol environment, the balance of stable dispersion of the nanoparticles in a mixed solvent and the contact property of an active ingredient interface, and the consideration of small particle size distribution and high active ingredient carrying capacity are realized; the problem that an existing alcohol-based disinfection system is difficult to meet the requirements for use convenience and disinfection persistence at the same time is solved, and the alcohol-based disinfection system has excellent antibacterial performance, skin moisture retention and long-term stability and has wide application value in the fields of medical treatment and public health, public epidemic prevention and daily disinfection.

The invention discloses a collagen peptide enzymolysis process pH value self-adaptive regulation and control method and a collagen peptide enzymolysis process pH value self-adaptive regulation and control system, particularly relates to the technical field of industrial process automatic control, and is used for solving the problem of control instability caused by sensor interface adsorption and mixing lag of an existing pH control system in a solid-liquid multiphase complex reaction system. The method comprises the following steps: acquiring a pH measurement value sequence and an acid-base reagent addition amount in real time, performing baseline drift evaluation to identify a pseudo signal component, performing signal decomposition on a pH dynamic response sequence to determine mixed dead zone time when the pseudo signal component exceeds a set threshold value, delimiting a pH stable observation window based on the mixed dead zone time, extracting a process gain through spectral analysis, and determining the pH stable observation window according to the process gain. Finally, dynamic control parameters are generated, pH regulation and control with delay judgment logic are executed, meanwhile, pseudo signal components are deducted in pH value collection, cooperative compensation of measurement distortion and execution lag is achieved, and the control quality and stability under a complex reaction system are remarkably improved.

The invention provides a crystallization process of recombinant insulin glargine and a product, and relates to the technical field of biological medicines. The crystallization process comprises the following steps: mixing and dissolving recombinant insulin glargine, organic acid, an organic solvent, salt and water, and adding zinc substances to obtain a crystallization solution; adjusting the pH value, stirring at low temperature, standing, and separating the recombinant insulin glargine crystal; in the crystallization solution, when the concentration of insulin is 5g / L, the concentration of the organic solvent is 10-30%, and the pH is 8.0-9.3; when the concentration of insulin is more than 5 and less than or equal to 10g / L, the concentration of the organic solvent is 15-30%, and the pH is 8.8-9.5. Under the condition of no phenolic substances, the successful crystallization of the high-concentration recombinant insulin glargine is realized by adopting the specific concentration of the recombinant insulin glargine and the concentration of the organic solvent and combining the conditions of pH regulation and the like; the crystal form of the recombinant insulin glargine is similar to that of the insulin glargine with phenol, and the obtained crystallized recombinant insulin glargine is applied to preparation of drugs for treating diabetes.

This invention discloses a pH-responsive dye platform, its preparation method, and its applications. The invention achieves precise pH regulation by introducing a heteroaryl amine at position 9 of a traditional rhodamine dye and replacing different heteroatoms at position 10. Based on this strategy, a pH-responsive dye platform spanning the entire physiological pH range (the platform consists of a series of pH-responsive dyes suitable for different pH ranges) is constructed. Furthermore, the pH-responsive dyes in this platform possess excellent photophysical properties, sensitive pH response capabilities, and cover a response range from pH 0.5 to 7.0, meeting the monitoring needs of different pH microenvironments in vivo.

The present invention relates to the measurement of ionic strength using closed loop electrochemical pH regulation. A method for monitoring changes in ionic strength in a sample solution by means of a closed loop device is provided, which provides for continuous electrochemical pH regulation cycles between predetermined pH values. In particular, changes in ionic strength can be induced by chemical reactions and can eventually change the electrical control parameters of the closed loop device. By measuring these electrical control parameters, the extent and progress of the respective chemical reactions can be monitored.

This invention belongs to the field of oil-in-water emulsion preparation technology, and relates to a pH-controlled gelatin-lecithin composite system stabilized oil-in-water emulsion and its preparation method. In the preparation process, lecithin, gelatin, and water are mixed to obtain solution A. The pH value of solution A is adjusted to 3-6. Finally, the pH-adjusted solution A is used as the aqueous phase, and then the oil phase is added to the aqueous phase. Emulsification is performed at a shear rate of 15000-18000 rpm to obtain the pH-controlled gelatin-lecithin composite system stabilized oil-in-water emulsion. The oil phase consists of cyclic monoterpenes. The particle size of the pH-controlled gelatin-lecithin composite system stabilized oil-in-water emulsion is 1-15 μm. The method of this invention is simple and easy to operate; the obtained pH-controlled gelatin-lecithin composite system stabilized oil-in-water emulsion exhibits good dispersibility and stability.

This invention discloses a segmented isoelectric extraction method for glutamic acid based on gradient pH control, belonging to the field of glutamic acid extraction technology. It aims to solve problems such as impurity encapsulation in crystals, low purity, difficulty in solid-liquid separation, and poor process stability caused by one-time pH adjustment in traditional isoelectric glutamic acid extraction processes. This method divides the crystallization process into three stages: rapid nucleation, slow crystal growth, and stable crystal growth. Through the synergistic effect of gradient pH control and segmented temperature control: In the first stage, the pH of the fermentation broth is adjusted from the initial pH to 4.2-4.6 at a uniform rate, while the temperature of the fermentation broth is lowered to 20°C within 2 hours; in the second stage, the pH is uniformly lowered to 3.6-3.8, and the temperature is uniformly lowered to 15°C; in the third stage, the pH is uniformly lowered to 3.3, and the temperature is uniformly lowered to 10-12°C. This invention avoids the problems of fine crystal loss and impurity co-crystallization, and the process is stable and easily controlled, increasing the purity of glutamic acid from 95.00% in traditional processes to approximately 98.25%, significantly improving the quality and production efficiency of glutamic acid.

The invention discloses an efficient fermentation shaking table system, and belongs to the technical field of bioengineering equipment. Comprising a shaking table main body unit, a pH regulation and control unit for detecting and regulating the pH value of a culture solution in real time, an OD real-time detection unit for monitoring the growth of microorganisms in a non-invasive manner, a continuous trace feeding unit for accurately conveying a nutrient solution, and a central control unit for coordinated control. The central control unit adopts a hybrid control algorithm combining fuzzy PID (Proportion Integration Differentiation) and incremental PID to realize rapid, accurate and overshoot-free adjustment of the pH value; and through a mathematical model based on growth dynamics, intelligent calculation and automatic feeding of the material supplementing rate are realized. The system supports multi-station independent parallel control. The system and the method have the beneficial effects that automation and intellectualization of a microorganism culture process are realized, the experiment efficiency, the data precision and the result repeatability are remarkably improved, laboratory research and industrial production are effectively bridged, and the process amplification risk is reduced.

The invention discloses a protein-based high-stability and high-load Pickering emulsion and a preparation method and application thereof.The preparation method comprises the steps that spirulina isolated protein and a gelatin solution are mixed, a composite nano-particle dispersion liquid is formed through pH regulation and stirring reaction, and then the composite nano-particle dispersion liquid and an oil phase are homogenized to prepare a high-load emulsion; the composite particles are synergistically constructed through hydrogen bonds and electrostatic and hydrophobic effects, and have high interface adsorption efficiency and mechanical stability, so that the emulsion keeps good stability under the conditions of wide pH (3-13), high salt (less than or equal to 500mM / L NaCl) and long-term storage (1 month), the oil-soluble active matter loading capacity reaches 42.12%, the encapsulation efficiency is greater than or equal to 99.9%, and the transdermal delivery efficiency can reach 10%. The emulsion system can adapt to various oil phases (vegetable oil and silicone oil) and active matters (curcumin and vitamin E), and has wide application prospects in the fields of quality guarantee and enhancement of functional foods, slow release of medicines and long-acting protection of cosmetics.

The invention relates to the technical field of bioengineering, in particular to a preparation method and application of a folium cortex eucommiae fermentation extract for promoting cartilage growth. According to the method, a four-stage dynamic regulation and control process of low-temperature plasma synergistic enzymolysis pretreatment, aerobic wall breaking, aerobic and anaerobic transition and anaerobic conversion is adopted; four specific strains with complementary functions, namely bacillus subtilis, aspergillus niger, saccharomyces cerevisiae and enterococcus faecalis, are selected, and precise temperature control and pH regulation are combined, so that efficient release and conversion of active ingredients of the folium cortex eucommiae are realized. The active ingredients of the extract are rich in variety and sufficient in content, cartilage cell proliferation and osteogenic differentiation can be remarkably promoted, and the extract has full-scene cartilage repair adaptability and is good in safety through toxicology verification. The preparation process is stable and repeatable, reaches the pilot test effect, can be adapted to various dosage forms such as oral preparations, injections and the like, and is suitable for preparing cartilage repair related medicines, functional foods and cartilage tissue engineering scaffold composite materials.

The invention discloses a method for realizing base-catalyzed organic oxidation reaction through local pH regulation and control in a non-strong alkaline solution, which comprises the following steps: by taking the non-strong alkaline solution containing organic matters as an electrolyte, applying alternating current to an electrode, periodically switching the polarity of the electrode, and carrying out pH regulation and control on the polarity of the electrode; and the polarity of the same electrode is periodically and alternately converted between a cathode state and an anode state. By adopting the method provided by the invention, the pH value of a non-strong alkaline solution does not need to be adjusted to be strong alkaline, and OH <-> generated by the electrode in a cathode state constructs a strong alkaline environment on the surface of the electrode in situ, so that the base-catalyzed organic oxidation reaction depending on the strong alkaline environment can still be stably supported to be continuously and efficiently carried out under the non-strong alkaline condition of a bulk phase. By regulating and controlling the alternating current period, the local pH of the surface of the electrode can be precisely regulated and controlled, so that the base catalysis organic oxidation reaction is precisely and efficiently catalyzed.

The invention belongs to the field of hydrogel intelligent driving materials, and discloses a preparation method of a gradient structure natural rubber-hydrogel composite intelligent driving material constructed based on pH regulation, and the preparation method comprises the following steps: mixing a poly (N-isopropylacrylamide) pre-polymerization solution and a natural rubber latex, regulating the pH of the solution to 11.5, and then adding an initiator to obtain a mixed solution; injecting the mixture into a mold and gelatinizing to obtain the natural rubber-hydrogel composite intelligent driving material. According to the method, the continuous anisotropic gradient structure material is spontaneously formed under the synergistic effect of gravity and gel network solidification, the tensile strength reaches up to 0.32 Mpa, and objects with the weight exceeding 50 times of the weight of the material can be lifted; and the material has a fast photo-thermal response speed, the bending speed can reach 129 DEG / s, the bending speed can reach 46 DEG / s, and complex bending and driving deformation such as bending can be realized. Therefore, the method has wide application prospects in the fields of soft robots, bionic drivers, light-operated intelligent grabbing systems and the like.

The invention relates to the technical field of microorganisms, and provides a lactobacillus plantarum P6 and a static high-density culture method thereof.Under a static culture system without material supplementation and precise pH regulation and control, a fermentation medium containing specific components is optimized, and ultrasonic physical field stimulation is applied in a thallus logarithmic phase in a time-sequence mode, so that the lactobacillus plantarum P6 is obtained. The lactobacillus plantarum P6 has the advantages that the density and activity of the lactobacillus plantarum P6 are obviously improved, the viable count of the lactobacillus plantarum P6 can reach CFU / mL or above, meanwhile, the tolerance of the lactobacillus plantarum P6 to alimentary canal stress such as cholate is enhanced, the requirements of low-cost and large-scale production of the probiotic industry are met, and the bottleneck that the viable count of existing lactobacillus plantarum in static culture is increased is broken through.

The invention discloses a method for recovering platinum group metal from copper anode slime treatment wastewater, which comprises the following steps: synthesizing modified resin containing amino and sulfydryl at the same time, and sequentially carrying out the steps of wastewater filtration, pH regulation, adsorption, elution, concentration, precipitation and firing or smelting. According to the method, high selectivity and high adsorption capacity of the resin to the platinum group metal chloride complex anions are utilized, efficient enrichment and recovery of low-concentration platinum group metal are achieved, and the method has the advantages that the process is simple, the cost is controllable, the resin can be recycled, and secondary pollution is avoided.

The invention discloses a curcumin extraction and purification method based on an aminophosphonic acid complexing agent, and belongs to the technical field of natural product extraction. According to the method, ethylenediamine tetramethylenephosphonic acid (EDTMP) or amino trimethylene phosphonic acid (ATMP) is taken as a complexing agent, and efficient extraction and accurate purification of curcumin are realized by virtue of a five-step process of raw material pretreatment, complexation reaction, complex separation, complex dissociation and refining purification and by virtue of specific binding and gradient pH regulation of the complexing agent on curcumin. The extraction rate reaches 92% or above, the product purity is larger than or equal to 98.5%, the total content of heavy metal is smaller than or equal to 0.1 mg / kg, and no toxic solvent is left; meanwhile, the process is simple and convenient, the cost is low, the complexing agent can be recycled, and the method is suitable for large-scale production, can be widely applied to preparation of high-purity curcumin in the fields of food and medicine, and has extremely high industrialization value.

The invention discloses a production process for green extraction of non-denatured II-type collagen from cartilage, and relates to the technical field of collagen extraction. The process comprises the following steps: firstly, carrying out low-temperature cleaning and crushing operation on a cartilage raw material, and then carrying out subcritical CO2 low-temperature degreasing to finish pretreatment; carrying out enzymolysis by adopting a gradient enzyme activity system, firstly carrying out pretreatment with low enzyme activity, then improving the enzyme activity to carry out deep enzymolysis, meanwhile, adding a composite protective agent in stages, and after enzymolysis, carrying out medium-temperature heat preservation, rapid cooling and pH regulation to obtain an enzymolysis material; and then completing acid dissolution by matching acetic acid with gradient concentration with variable frequency vibration, and finally preparing the non-denatured II-type collagen freeze-dried powder through low-temperature ultrafiltration purification and programmed freeze-drying. According to the production process provided by the invention, green and residue-free extraction of the collagen is realized, the natural triple helix structure and biological activity of the collagen can be reserved to the greatest extent, the extraction efficiency and purity of the product are greatly improved, and the residual amount of protease is reduced.

The utility model relates to a reaction device capable of realizing continuous phosphorus recovery and dynamic pH regulation and control, which belongs to the technical field of wastewater treatment and resource recovery and comprises a circulating precipitation reaction device, and the circulating precipitation reaction device sequentially comprises an outer circulating reaction tube, a primary precipitation tube, a secondary precipitation tube, a tertiary precipitation tube and a precipitation collection port which are integrally formed from top to bottom, an inner circulation reaction tube concentric with the outer circulation reaction tube is arranged in the outer circulation reaction tube, and the same reaction control cover plate is arranged at the tops of the outer circulation reaction tube and the outer circulation reaction tube; due to the continuous flow reaction design, whole-process automation of phosphorus-containing wastewater treatment and phosphorus recovery is achieved, traditional intermittent operation is replaced, the treatment efficiency is improved, and the large-scale wastewater treatment requirement is met; meanwhile, frequent starting and stopping of equipment are reduced, reaction conditions are optimized, energy consumption and reagent dosage are reduced, and cost is saved; an intelligent pH monitoring and regulating system is integrated, the reaction pH is controlled in real time, accurate pH regulation is achieved, and meanwhile the purity and quality of phosphorus products such as struvite are guaranteed.

The non-woven fiber post-treatment device with the switching function comprises a base, a protective frame plate is arranged above the top of the base, an acid pickling circulation tank and an oil agent circulation tank are installed at the two ends of the top of the base respectively, and a dilute acid blending pump is arranged in the middle of the acid pickling circulation tank and the middle of the oil agent circulation tank; a discharge pipe is mounted at the top output end of the dilute acid blending pump in a threaded manner; and a suction pipe is mounted on the front side of the dilute acid blending pump in a threaded manner. Through the dilute acid blending pump, the three-way pipe, and the first conveying pipe and the second conveying pipe which are controlled by the first stop valve and the second stop valve, rapid switching and accurate PH regulation and control of the HT / NW production process are realized; meanwhile, an automatic closed-loop control system of the PH and the concentration of the oiling agent is constructed by virtue of a PH sensor, a dilute acid metering pump, an alkali liquor metering pump, a densimeter and a liquid supplementing metering pump on the oiling agent circulating tank, so that the problem of low foam value of a finished product caused by unstable emulsification of the oiling agent is fundamentally solved, and the production efficiency is remarkably improved by reducing shutdown adjustment.

The utility model discloses a water injection and PH adjusting system for fry culture, which comprises fry culture ponds and a water tank, a water injection pipe is arranged at a water outlet of the water tank, branch pipe ends of the water injection pipe are respectively communicated with the adjacent fry culture ponds, the middle of a main flow pipe of the water injection pipe is connected with a water pump station in series, and a PH adjusting tank is arranged on the upper surface of a shell of the water pump station. A liquid outlet of the PH adjusting tank is communicated with a second liquid inlet of the water pump station; the flow dividing mechanism comprises flow dividing rings and flow dividing holes, the flow dividing rings are vertically connected to the interior of the fry culture pond in a sliding mode, and according to the water injection and PH adjusting system for fry culture, new water or a PH adjusting reagent is injected from multiple directions along the water surface of the fry culture pond all the time; the water surface of the upper layer of pond water can be promoted to be stirred in the water injection or PH adjustment process, so that new water or a PH adjustment reagent is mixed with old water more uniformly and comprehensively, and the water injection and PH adjustment effects of the fry culture pond are improved.

The invention provides a preparation method of colorless amorphophallus bulbifer alkaline gel, which comprises the following steps: mixing mixed amino acid with amorphophallus bulbifer fine powder, adding water to prepare a suspended emulsion, stirring for dissolving, adding an alkaline coagulator, heating to 60-80 DEG C, and preserving heat for 10-30 minutes to form the gel. The amino acids comprise L-glutamic acid, L-tyrosine and L-aspartic acid. L-tyrosine is used for inhibiting the color change of the amorphophallus bulbifer alkaline gel for the first time, and efficient inhibition is realized through double mechanisms of metal ion chelating and pH regulation.

The invention discloses a preparation method and application of a traditional Chinese medicine spray for treating asthma, and belongs to the technical field of traditional Chinese medicine preparations. The stability problem of the traditional Chinese medicine spray is systematically solved through the synergistic effect of alcohol precipitation impurity removal, volatile oil clathration, pH regulation and control and the ternary stabilizer. Pharmacodynamic studies show that the spray can remarkably reduce the inflammatory factor level of asthma model mice and prolong the incubation period of asthma inducing of guinea pigs, has the effect better than that of oral granules, takes effect quickly and is suitable for quick relief in the acute attack period of asthma.