180 results about "Fermentation rate" patented technology

The invention discloses a probiotic fermentation device, and relates to the technical field of fermentation devices, the probiotic fermentation device comprises a fermentation tank, a tank cover is mounted on the fermentation tank, a fixed plate is fixedly connected to the inner wall of the fermentation tank, a gas collection plate is slidably connected to the inner wall of the fermentation tank close to the upper part of the fixed plate, and a ventilation shaft is rotatably connected to the middle part of the tank cover; the middle part of the gas collecting plate is slidably connected to the outer surface of the ventilation shaft, and the outer surface of the middle part of the ventilation shaft is rotatably connected to the fixed plate; compared with the prior art, the device has the advantages that the ventilation shaft rotates under the action of driving force, the ventilation stirring plate can be driven to move together, comprehensive stirring operation is carried out on mixed thalli in the fermentation container, uniform distribution of the thalli is promoted in the stirring process, the contact opportunity of the thalli and oxygen is greatly increased, and the fermentation efficiency is improved. Therefore, the fermentation rate and efficiency of the probiotics are obviously improved.

The invention belongs to the technical field of health-care products, and particularly relates to a fermented composition beneficial to enhancing immunity and a preparation method thereof. The fermentation composition for improving immunity is prepared by taking yeast beta-glucan, an elderberry extract, glucoraphanin, sea cucumber peptide, inulin and a traditional Chinese medicine zymolyte as fermentation raw materials, firstly inoculating bacillus coagulans and staphylococcus xylosus for aerobic fermentation, and then inoculating bifidobacterium longum for anaerobic fermentation, the aerobic fermentation stage and the anaerobic fermentation stage have a synergistic effect, so that the fermentation speed can be increased, the fermentation time can be shortened, and richer nutrient substances can be provided, and therefore, the composition has an excellent effect of enhancing the immunity; the fermentation composition is applied to preparation of capsules helpful for enhancing immunity, is helpful for enhancing human immunity, and can solve the problem that active substances in existing health-care products are difficult to effectively absorb by human bodies, so that the effect of enhancing immunity is influenced.

The invention relates to the technical field of extraction of active ingredients of fermented plants, in particular to an extraction method of active ingredients of microbial fermented plants for resisting wrinkles, which comprises the following steps: step S1, preparing materials; step S2, primary fermentation extraction; step S4, secondary fermentation extraction; step S4, cell lysis; and step S5, filtering. According to the method, a mixed fermentation mode of lactobacillus plantarum and saccharomyces cerevisiae is used for plants to be extracted, in the fermentation process, foam and bubbles generated by fermentation are monitored and analyzed in combination with an image recognition technology to represent the fermentation process and the fermentation rate, the stirring rotating speed is adaptively adjusted according to the foam output, or the foam is discharged in time, so that the extraction efficiency is improved. The needed fermentation extraction effect and the minimum foam output are achieved, whether the fermentation extraction process tends to be stable or not is represented through the bubble generation frequency, fermentation extraction nodes are automatically and accurately determined, the stability of target active ingredients is guaranteed, the extraction rate is increased, and the active ingredients of fermented and extracted plants are prevented from being damaged.

The invention provides a bean product fermentation influence factor analysis method and system, and relates to the technical field of food safety detection.The method comprises the steps that multiple sets of key parameters are set within a preset range, physical and chemical index changes under the parameters are monitored in real time, and the physical and chemical index changes comprise the tannin variation, the acid production capacity, the fermentation rate and the active enzyme variation; the method comprises the following steps: establishing a key parameter, constructing a physical and chemical index prediction model, training by taking the key parameter as input, evaluating a fermented bean product, training a sensory evaluation index prediction model by taking the physical and chemical index as input, and finally, determining an optimal combination of the key parameter through a genetic algorithm by taking maximization of the sensory evaluation index as a target, thereby optimizing a fermentation process. By setting and adjusting key fermentation parameters in real time and combining physical and chemical index monitoring and sensory evaluation, the purposes of optimizing the fermentation process and improving the final quality of bean products are achieved.

The invention provides plant lactobacillus and application thereof in fermentation of sour cucumbers, and belongs to the technical field of microbial fermentation, the plant lactobacillus is preserved in Guangdong Microbial Culture Collection Center, and the preservation number is GDMCC No: 66118; the invention further provides a method for preparing sour cucumbers through fermentation of the plant lactobacillus. The method comprises the following steps that 1, cucumbers are pickled and dehydrated, and dehydrated cucumbers are obtained; and 2) mixing the dehydrated cucumbers with salt brine, and fermenting to obtain the pickled cucumbers. The plant lactobacillus provided by the invention has excellent fermentation characteristics, and when the plant lactobacillus is applied to cucumber fermentation, the fermentation rate can be increased, the fermentation period can be shortened, the crispness of cucumbers can be enhanced, and the product quality can be stabilized.

The invention relates to the technical field of agriculture and animal husbandry waste treatment, in particular to a livestock and poultry manure treatment system and method based on microbial fermentation and intelligent temperature control, and the system comprises the following steps: an activity demand analysis module, a manure pretreatment module, a temperature monitoring and regulation module, a pressure monitoring and regulation module, and a fermentation speed prediction module. According to the invention, by analyzing the breeding speed of microorganisms, identifying various environmental conditions required by microbial fermentation and pretreating excrement, the dynamic adjustment of temperature and pressure in the fermentation container is realized, the fermentation speed is effectively controlled, the reduction of fermentation efficiency caused by environmental fluctuation is reduced, and the stability of the fermentation process is ensured; the resource conversion efficiency, including organic fertilizers and biological energy sources, is improved, and in combination with the prediction of the fermentation speed and the precise measurement and calculation of the gas production rate, the fine management of the fermentation process is realized, the energy consumption and the operation cost are reduced, the automation and intelligence levels are increased, and the response to the environmental protection requirement is ensured.

The utility model discloses a bio-organic fertilizer fermentation turning and stirring device, which relates to the technical field of bio-organic fertilizer fermentation, and comprises a fixed platform, the front and rear ends of the upper side of the fixed platform are fixedly connected with support plates, the interiors of the two support plates are rotatably connected with support rods, and the inner sides of the two support rods are fixedly connected with a stirring cylinder. A push rod is fixedly installed at the left end of the lower side of the fixed platform, the output end of the push rod penetrates through the lower side of the fixed platform and is fixedly connected with a first fixed frame, first rotating rods are rotationally connected to the front side and the rear side in the first fixed frame, and first connecting rods are fixedly connected to the upper sides of the first rotating rods. Through the arrangement of the supporting plate, the supporting rod, the first fixing frame, the first rotating rod, the first connecting rod, the second fixing frame, the second rotating rod and the push rod, the stirring barrel can be effectively made to shake, bio-organic fertilizer is prevented from being stacked at the two ends of the stirring barrel, the fermentation speed is increased, and bad gas such as methane and hydrogen sulfide is prevented from being generated.

The utility model provides a wheat bran fermentation device for whole wheat flour processing, and relates to the field of whole wheat flour. The wheat bran fermentation device for whole wheat flour processing comprises a heat preservation shell and a fermentation tank, a turnover mechanism is arranged in the middle of the fermentation tank and comprises a second temperature sensor, a sealing cover and a second rotating wheel, the middle of the sealing cover is rotationally connected with a rotating shaft, a stirring mechanism is arranged in the heat preservation shell, and the stirring mechanism is arranged in the heat preservation shell. The stirring mechanism comprises a buckle, a gear ring and stirring blades, and the buckle is rotationally connected with the heat preservation shell. According to the wheat bran fermentation device for whole wheat flour processing, a fermentation tank is subjected to heat preservation through a heat preservation shell, a second rotating wheel drives a buckle to rotate, a rotating gear drives a gear ring to rotate, then stirring blades are driven to rotate, liquid in the heat preservation shell is stirred, the flowing speed of the liquid in the heat preservation shell is increased, and the temperature in the heat preservation shell is more stable; the accuracy of controlling the fermentation temperature of the wheat bran is improved, and the fermentation rate of the wheat bran is increased.

The present invention provides a method for preparing polygonatum wine, which comprises mixing polygonatum with saccharifying enzyme for saccharification and then mixing with saccharomyces cerevisiae FN107 bacterial liquid for fermentation. Compared with the traditional fermentation koji, the optimized fermentation process has the advantages of fast fermentation speed, convenient process operation, rich in polysaccharides, the main functional component of polygonatum, and can effectively improve the utilization efficiency of polygonatum, enrich the product types of polygonatum, expand the polygonatum industry chain, and thus promote the polygonatum industry.

The invention provides high-protein fermented milk as well as a preparation method and application thereof, and relates to the technical field of dairy products. The preparation method of the high-protein fermented milk comprises the following steps: S1, inoculating a fermentation base material with a fermentation inoculant, applying ultrasonic treatment, and finishing the ultrasonic treatment until the ultrasonic energy density of a fermentation system is 10-25kJ / L, the ultrasonic treatment power is 100-200W, and the frequency is 15-25kHz; s2, neutral protease is added into the secondary fermentation system for continuous fermentation treatment, the enzyme activity of the neutral protease is larger than or equal to 5000 U, and the adding amount is 0.01 wt%-0.04 wt%. According to the method, ultrasonic treatment and protease are combined to treat and ferment a high-protein product, so that the fermentation speed is further increased, the system viscosity of the high-protein fermented milk is effectively reduced, the problem of rough texture caused by high protein content is solved, the particle size of the fermented milk is relatively small, and the fineness and stability of the product are improved.

The invention discloses an oxygen supply device for agricultural microbial fertilizer fermentation, and relates to the technical field of microbial fertilizer ferment.The oxygen supply device for agricultural microbial fertilizer fermentation comprises a base, a linkage plate is fixedly installed at the top of the base, and a hydraulic cylinder is fixedly installed at the top of the base; a fermentation tank is rotatably mounted at one end, away from the base, of the linkage plate, and a motor I is fixedly mounted on the surface of the fermentation tank. According to the oxygen supply device for agricultural microbial fertilizer fermentation, aeration holes are limited in a large area through lantern rings under the action of a hydraulic cylinder, and at the moment, the oxygen supply value of an oxygen supply tank to the interior of the fermentation tank is minimum; at the moment, adaptation to oxygen supply requirements of the fertilizer in different fermentation time periods is achieved, then the fermentation rate and effect of the fertilizer in different stages are improved, the requirements of the fertilizer in different fermentation time periods are accurately adapted in the mode of automatically adjusting the oxygen supply amount according to the fermentation stages, and therefore the fermentation rate and effect of the fertilizer in each stage are improved.

The invention discloses biomass fermentation extraction equipment, belongs to the technical field of biological fermentation, and solves the problems that certain accessibility exists through biogas aeration, but obvious defects exist in the aspect of safety, and the safety coefficient needs to be maintained while an anaerobic environment needs to be maintained in the biomass fermentation process. Comprising a fermentation tank, a fuel gas recovery pipeline communicated with the fermentation tank and a gas concentration adjusting pipeline capable of forming a loop with the fermentation tank, the fuel gas recovery pipeline can be arranged in an on-off mode, the gas concentration adjusting pipeline can be separated from the fermentation tank, and the gas concentration adjusting pipeline can be arranged in an on-off mode. According to the invention, crushed biomass can be put into the fermentation tank, the gas concentration is adjusted through the control module, the oxygen content is reduced, an anaerobic environment is provided, fuel gas is recycled, when methane does not reach the standard, self-circulation aeration is carried out to prevent precipitation and improve the fermentation speed, and if methane reaches the standard, low-methane gas and carbon dioxide are used for cyclic aeration to ensure safety.

The invention relates to the technical field of sludge treatment, in particular to a sludge biological treatment system which comprises a fermentation box, the device further comprises an anaerobic fermentation area, an aerobic fermentation area, a precipitation tank plate, an aeration assembly, a transfer tank, a biological tank and a sludge outlet auger, the precipitation tank plate is in a V shape and installed in the middle of the fermentation box, the fermentation box is divided into the anaerobic fermentation area, the aerobic fermentation area and the precipitation area by the precipitation tank plate, the aeration assembly is installed at the bottom of the aerobic fermentation area, and the transfer tank is installed in the sludge outlet auger. The transfer tank is installed outside the fermentation box and communicated with a sludge outlet of the fermentation box, the lower end of the transfer tank is connected with the input end of the biological tank, the transfer tank is used for evaporating sludge moisture, a biological conversion bed is arranged in the biological tank, the biological tank is used for biological treatment of sludge, and the sludge outlet auger is installed outside the biological tank. The input end of the sludge outlet auger is connected with the output end of the biological tank; the high-integration fermentation box is adopted, the fermentation speed is high, fermentation is more sufficient, sludge can be preliminarily separated, and the subsequent biological treatment efficiency is improved.

The present application belongs to the technical field of liquid organic fertilizer fermentation, in particular to a liquid bio-organic fertilizer fermentation device, which comprises a fermentation tank, a support frame is sleeved and fixedly connected to the outer wall of the fermentation tank, and a top cover is arranged at the opening of the top of the fermentation tank; the device further comprises a raw material adding auxiliary assembly; the raw material adding auxiliary assembly comprises a reciprocating rod which is slidingly connected to one side of the top of the fermentation tank, and a discharge cylinder is fixedly connected to the lower end of the reciprocating rod. The raw material adding auxiliary assembly is used to uniformly disperse the raw material to all parts of the inner cavity of the fermentation tank. At this time, the raw material is stirred by the plurality of stirring rods, and since the raw material has been uniformly dispersed to all parts of the inner cavity of the fermentation tank, the raw material can be uniformly mixed only by a short stirring time, thereby being beneficial to improving the fermentation speed. Moreover, the raw material in the discharge cylinder can be extruded by the pressure plate to crush the caked raw material, thereby avoiding the situation that the fermentation speed is affected due to the caking of the raw material.

The utility model discloses a fermentation device for organic fertilizer production, which relates to the technical field of organic fertilizer fermentation and comprises a fermentation tank, a discharge port is fixedly connected to the left side of the bottom of the fermentation tank, a feed port is fixedly connected to the right side of the top of the fermentation tank, and a turning mechanism is fixedly mounted in the middle of the bottom end of the fermentation tank. The right side of the bottom end of the fermentation tank is fixedly connected with a heater. The motor is started, the rotating shaft can drive the connecting block to rotate, then the material turning plate rotates around the rotating shaft through the rotating shaft, fertilizer turning is achieved, meanwhile, the bevel gear is meshed with the bevel gear ring so that the bevel gear can drive the connecting shaft to rotate, the material turning plate can rotate through the rotating shaft, and therefore the fertilizer turning effect is enhanced, and the fertilizer turning effect is improved. The fertilizer is uniformly mixed and fully contacted, so that the problem of local unfermentation or incomplete fermentation is avoided, the fermentation speed is accelerated, the fermentation period is shortened, and the fermentation quality of the fertilizer is finally improved.

The utility model discloses a kind of composite enzyme fermentation devices for bioengineering, it is related to composite enzyme fermentation technical field, solve the technical problem that the current reaction kettle in stirring process, single stirring rod drives stirring blade to rotate, and then make that material cannot be fully mixed, reduce the fermentation rate of composite enzyme, including stirring box, the feeding pipe is fixedly installed on the stirring box upper wall, the steam inlet pipe is fixedly installed on the stirring box side wall, the steam exhaust pipe is fixedly installed on the other side wall of stirring box, the utility model is mixed evenly by longitudinal stirring of stirring assembly to material, improve the fermentation rate of composite enzyme, by steam inlet pipe and steam exhaust pipe import hot steam, and then heat inner bag, assist composite enzyme to ferment, and then heat fermentation for material, by shock-absorbing component shock-absorbing protection to shock-absorbing box, provide stable support when material fermentation.

The application provides a kind of liquor wastewater treatment device, belongs to liquor wastewater bacteria residue technical field. Including fermentation reaction bin, the top of the fermentation reaction bin is installed with feed pipe bin, one side of the feed pipe bin is installed with auxiliary agent bin, the top of the fermentation reaction bin is installed with microbial inoculant bin, the side of the fermentation reaction bin is installed with control center. The application is equipped with spraying adjusting assembly and stirring mixing assembly, which makes the microbial inoculant fully contact and mix with the auxiliary agent, increases the activity of the microbial inoculant, speeds up the degradation process with the liquor wastewater, improves the treatment efficiency. At the same time, stirring helps the microbial inoculant to be more evenly distributed in the liquor wastewater, ensures consistent reaction effect in each area, avoids insufficient treatment in local area, avoids blockage, ensures the concentration of microbial inoculant content and fermentation speed in each area to be flat, avoids damage caused by pressure drop of the device when blocked, prolongs the service life of the equipment, reduces the cost of production.

The utility model discloses a device for preparing organic fertilizer through sludge fermentation, and particularly relates to the technical field of organic fertilizer preparation, the device comprises a support and a fermentation tank body fixedly arranged at the top of the support, an oxygen supply box is fixedly arranged on one side of the top of the fermentation tank body, and a temperature control assembly is arranged on the outer wall of the fermentation tank body. The temperature control assembly is arranged in the fermentation tank body and used for guaranteeing the fermentation temperature needed by sludge fermentation in the fermentation tank body, the mixing assembly is arranged in the fermentation tank body and used for stirring and mixing sludge and accelerating the fermentation rate, the temperature control assembly comprises a temperature control frame, and the fermentation temperature in the fermentation tank body is monitored in real time through a temperature sensor; cold water and hot water are respectively added into the cold water tank and the hot water tank in advance, and when the temperature in the fermentation tank body is different from the required fermentation temperature, the cold water or the hot water in the cold water tank and the hot water tank are respectively pumped into the temperature control frame by the two pumps, so that the required fermentation temperature in the fermentation tank body is guaranteed; therefore, the sludge fermentation efficiency and quality are improved.

The utility model belongs to the field of waste composting technology, concretely relates to livestock breeding waste composting fermentation device, including support leg and control box, control box fixedly connected at the top of support leg, the top of control box is provided with feed pipe, the bottom of control box is provided with discharge valve, the utility model discloses the setting of stirring device makes the stirring rod on the circumference of connecting ring fixedly and drives the stress rotation of auxiliary plate, makes the rotation of auxiliary plate in the control box, stirs the breeding waste in the control box, makes the breeding waste be stirred and heated, and the heating is more even, accelerates the heating speed of breeding waste, speeds up the fermentation speed of breeding waste, solves the problem that the breeding waste in the control box cannot be stirred, leads to the breeding waste not being stirred and heated more evenly, cannot accelerate and speed up the fermentation speed of breeding waste.

The invention provides an application of lactobacillus plantarum SAAS-B-PCA-202043-6 in inhibition of aerogenesis saccharomycetes and an application of lactobacillus plantarum SAAS-B-PCA-202043-6 in preparation of bagged fermented chilies, belongs to the technical field of microbial fermentation, and provides a preparation method of bagged low-salt viable type fermented chilies. And mixing with the salt brine inoculated with lactobacillus plantarum SAAS-B-PCA-202043-6 fermentation liquor, loading into a vacuum sealed packaging bag, and fermenting to obtain the fermented chili. The lactobacillus plantarum SAAS-B-PCA-202043-6 provided by the invention has a relatively strong inhibition effect on main flatulence-causing saccharomycetes in fermented vegetables, and when the lactobacillus plantarum SAAS-B-PCA-202043-6 is applied to chili fermentation, the fermentation rate can be increased, the fermentation period can be shortened, the flatulence problem of bagged low-salt viable bacteria type fermented chili products can be effectively solved, and the product quality can be stabilized.

The present invention belongs to the technical field of bioengineering, and particularly relates to a polypeptide-rich feed and a preparation method thereof. By using non-starch polysaccharide degrading enzymes such as cellulase and α-galactosidase to pre-treat soybean meal, the viscosity of the feed liquid is significantly reduced and the fluidity is increased; inoculating mixed strains after enzymatic hydrolysis in an aqueous solution of soy protein concentrate not only helps to shorten the fermentation time but also improves the fermentation efficiency; by limiting the preparation of the polypeptide-rich feed under stirring conditions, it not only helps to improve the enzymatic hydrolysis and fermentation rates, but also avoids the blockage of pipelines and die holes caused by caking, greatly improving the fermentation efficiency. Therefore, the technical solution provided by the present invention has the characteristics of short time, high efficiency and high content of protein oligopeptides.

The invention discloses a leavening dough growth-promoting lactobacillus strain KUST4216 for shortening food fermentation time and producing p-cresol at high yield and application of the leavening dough growth-promoting lactobacillus strain KUST4216. The strain is classified and named as Levibacillus zyma KUST4216; the preservation number of the strain is GDMCC NO: 65660. The content of p-cresol in fermentation liquor is larger than or equal to 5 mg / kg after acid bamboo shoots are fermented by the strain for 7 days; after the brine is fermented for 4 to 5 days, the content of p-cresol is 15.5 to 22 mg / kg; the content of p-cresol in the fish dices fermented for 5 days is 5-6 mg / kg, the fermentation effect reaches the content of p-cresol obtained after fermentation of an existing natural fermentation method for 1 month, and the fermentation speed is effectively shortened.

The present invention relates to the technical field of sludge treatment, and in particular to a sludge biological treatment system, comprising a fermentation box; an anaerobic fermentation area, an aerobic fermentation area, a sedimentation tank plate, an aeration component, a transfer tank, a biological pool and a mud discharge auger, wherein the sedimentation tank plate is V-shaped and is installed in the middle of the fermentation box, and the sedimentation tank plate divides the fermentation box into an anaerobic fermentation area, an aerobic fermentation area and a sedimentation area, the aeration component is installed at the bottom of the aerobic fermentation area, the transfer tank is installed outside the fermentation box, the transfer tank is connected to the mud outlet of the fermentation box, the lower end of the transfer tank is connected to the input end of the biological pool, the transfer tank is used to evaporate sludge water, a biological conversion bed is provided in the biological pool, the biological pool is used to biologically treat sludge, the mud discharge auger is installed outside the biological pool, and the input end of the mud discharge auger is connected to the output end of the biological pool; the highly integrated fermentation box is used, the fermentation speed is faster and more sufficient, the sludge can be preliminarily separated, and the efficiency of subsequent biological treatment is improved.

The object of the present invention is to provide a processing method that makes it possible to improve various characteristics related to a fermented food or beverage that uses a protein ingredient (and, in particular, characteristics of the fermented food or beverage itself such as stress, water retention, suppression of water release, and the like or characteristics of the ingredients of the fermented food or beverage related to fermentation speed during production of the fermented food or beverage). The present invention improves various characteristics of a fermented food or beverage that uses a protein ingredient using the action of a protein deamidase and a multicopper oxidase during production of the fermented food or beverage.

Disclosed herein are yeast strains and derivatives thereof, as well as compositions comprising the yeast strains for use in ethanol production. The disclosure also relates to processes for producing ethanol from biomass using the yeast strains and compositions. In particular, the yeast strains produce less glycerol and more ethanol, and have higher temperature tolerance and faster fermentation rates than strains and products currently used in ethanol production processes.

The invention discloses a clostridium aerovorans continuous fermentation method based on multi-parameter regulation and control, and belongs to the technical field of microbial fermentation. The method comprises the following parameter control: fermentation culture medium concentration control: in a biomass stabilization stage, gradually reducing the fermentation culture medium concentration from an initial concentration so as to reduce an acid production ratio and improve an alcohol production ratio; the CO content in the tail gas is controlled, wherein the volume fraction of CO in the tail gas is controlled to be 5-10%, and therefore the growth rate of the clostridium aerovorans is increased; dilution degree control: gradually improving the dilution degree so as to improve the fermentation yield; wherein the dilution is equal to the product of the fermentation culture medium feeding speed and 24 / fermentation liquid volume; a ceramic membrane is added, and thalli are intercepted by adding the ceramic membrane, so that the biomass is improved. According to the method, the fermentation acid-alcohol ratio can be regulated and controlled, and the fermentation rate of the clostridium aerovorans is increased.

The invention discloses a pile fermentation device and a fermentation process for medicinal material extraction, and relates to the field of fermentation devices.The pile fermentation device comprises a fixed box, a ventilation opening is formed in the fixed box, a fan and a heater are arranged in the ventilation opening, a plurality of fermentation boxes are arranged in the fixed box, and the fermentation boxes can circularly move in the fixed box; the top of the fermentation box is open, a stirring assembly is arranged in the fermentation box, and the stirring assembly comprises a plurality of stirring rods and moving blocks. A poke rod can shake and loosen materials in the fermentation box, prevent the materials in the fermentation box from being stacked into blocks, keep the materials loose, improve the ventilation effect of the materials at the bottom of the fermentation box and prevent the materials at the bottom from being overheated due to fermentation, and meanwhile, the fermentation box is turned over, so that the materials in the fermentation box are poured into the empty fermentation box at the lower part; the position of the material in the fermentation box is changed, so that the inconsistent fermentation speed of the material on the upper layer and the lower layer in the fermentation box is prevented, and the fermentation uniformity is improved.

The invention provides a fermentation speed regulation and control method capable of keeping natural activity of fruits and vegetables and fermentation equipment, and relates to the technical field of fruit and vegetable fermention.The method comprises the steps that multiple flora types corresponding to multiple liquid inlets of a fruit and vegetable fermentation tank are collected; performing oxygen adaptability analysis according to the plurality of flora types, and outputting a plurality of groups of hypoxia regulation and control parameters; controlling a plurality of low-oxygen regulation and control sub-modules to activate florae at a plurality of liquid inlets according to a plurality of groups of low-oxygen regulation and control parameters; constructing a mixed fermentation speed regulation and control model, inputting the flora type in the mixer into the mixed fermentation speed regulation and control model for activity retention analysis, and outputting mixed-hypoxia regulation and control parameters; and performing oxygen regulation on the mixer according to the mixing-hypoxia regulation and control parameters. The technical problems of low fermentation efficiency and nutrient loss caused by lack of fine regulation and control of oxygen requirements in the multi-flora fermentation process in the prior art are solved, and the technical effects of improving the fermentation efficiency and retaining natural components of fruits and vegetables are achieved.

The invention relates to the technical field of biofuel preparation, and discloses an extraction device for biofuel preparation, which comprises a fermentation tank, and also comprises: a support hinged to the outer wall of the fermentation tank and used for placing the fermentation tank; the cover plate is mounted at the top of the fermentation tank and is used for taking and placing raw materials; the stirring mechanism is arranged in the fermentation tank and is used for mixing the raw materials; the enzyme adding mechanism is arranged in the stirring mechanism and is used for adding enzyme to promote fermentation. Through the stirring mechanism, raw materials are stirred through rotation of multiple groups of stirring rods, so that the raw materials are prevented from being stacked in the fermentation tank, an anaerobic area in the fermentation tank can be broken, fermentation of microorganisms is promoted, the fermentation speed is increased, and meanwhile, the fermentation efficiency is improved by moving a movable sleeve back and forth on the outer walls of the stirring rods. Meanwhile, the stirring effect is further improved in cooperation with the rotatable shifting rod, so that the raw materials and the enzyme are fully mixed, and the fermentation effect is further improved.

The application provides a lactobacillus plantarum and application thereof in fermented sour cucumbers, and belongs to the technical field of microbial fermentation. The lactobacillus plantarum is preserved in the Guangdong Microbial Culture Collection Center, and the preservation number is GDMCC No: 66118. The application also provides a method for preparing the sour cucumbers by fermentation of the lactobacillus plantarum, which comprises the following steps: 1) pickling and dehydrating cucumbers to obtain dehydrated cucumbers; and 2) mixing the dehydrated cucumbers with salt brine and fermenting to obtain the sour cucumbers. The lactobacillus plantarum has excellent fermentation characteristics, and when the lactobacillus plantarum is applied to cucumber fermentation, the fermentation rate can be improved, the fermentation period can be shortened, the crispness of the cucumbers can be enhanced, and the product quality can be stabilized.