1055 results about "Digestion" patented technology

The invention relates to selenium-rich health-care rice dumplings. The selenium-rich health-care rice dumplings are prepared from the following raw materials of selenium-rich glutinous rice, rose petals, haw tree parasitism, plum tree parasitism, radix rehmanniae, dendrobium candidum, vegetable oil, pork, mung beans, ground cinnamon and table salt. The selenium-rich glutinous rice is used as a main raw material, so that selenium elements in human bodies are complemented, and collective antioxidation is strengthened; besides, the glutinous rice and the mung beans are soaked in a traditional Chinese medicine extracting solution, and medical components in traditional Chinese medicines are absorbed, so that the selenium-rich health-care rice dumplings have the efficacies of clearing heat, promoting salivation, relieving restlessness, resolving stagnation, reducing blood lipid, promoting digestion and enhancing the immunity of organisms.

The invention provides a whey protein deep hydrolysate with low sensitization and an allergy relieving effect as well as a preparation method and application of the whey protein deep hydrolysate. According to the method, the alkaline protease, the neutral protease and the glutamyltransferase are sequentially used for carrying out first enzymolysis, second enzymolysis and third enzymolysis on the whey protein raw material, and the whey protein hydrolysate which is low in molecular weight, good in taste, good in digestion and absorption performance, low in sensitization and capable of effectively relieving allergic reaction of the organism is obtained.

The invention relates to the technical field of microorganisms, in particular to bifidobacterium bifidum BGLP1 capable of regulating sugar digestion and producing GLP-1 at high yield and application of the bifidobacterium bifidum BGLP1. The preservation number of the bifidobacterium bifidum BGLP1 is CGMCC (China General Microbiological Culture Collection Center) No.35718, and the bifidobacterium bifidum BGLP1 can be used for preparing the feed additive. The strain has the capability of inhibiting alpha-glucosidase and alpha-amylase; sTC-1 cells are stimulated to secrete GLP-1, and the blood glucose reducing pathway capacity of the intestinal tract is activated; the activity of pancreatic lipase is obviously inhibited, and the dietary fat absorption capability can be effectively reduced; redundant cane sugar is converted into exopolysaccharide, so that the probiotic function capability is improved; the capability of converting white fat into brown fat is promoted; macrophages are activated, and the body immune function is improved. In addition, the bifidobacterium bifidum BGLP1 also has relatively strong intestinal colonization ability, has good tolerance in artificial gastric juice and artificial intestinal juice, and can smoothly reach the intestinal tract of a human body.

The invention provides infant rapid brewing rice flour based on enzymolysis and superfine water grinding and a preparation method thereof, and belongs to the technical field of food processing. Rice is subjected to raw material differential temperature pretreatment and multi-stage hydration pulping, and a stable three-dimensional microscopic network structure with starch particles as filler and soluble protein and colloid as a continuous phase is constructed; then, food-grade lactic acid bacteria pre-fermentation is combined with sequential action of various enzymes, and starch and protein are subjected to mild directional hydrolysis under the condition of simulating dynamic pH of gastrointestinal tract digestion, so that the nutritional and digestible infant healthy rice flour is prepared, and the problems that the rice flour is easy to agglomerate, non-uniform in dispersion and low in nutritional value during brewing are solved. The digestion and absorption efficiency of macromolecular nutrient components such as starch and protein is relatively low, and the nutrition and flavor of the product mainly depend on exogenous addition, so that the naturalness and functionality are insufficient. The rice flour disclosed by the invention has excellent reconstituability and nutrient absorption rate, and is suitable for being used as a healthy nutritional complementary food for infants of 6-36 months.

The invention discloses modified biogas residue-based hydrothermal carbon, a preparation method thereof and a dry digestion method for kitchen waste, and belongs to the technical field of waste organic matter recycling. The preparation method comprises the following steps: soaking biogas residues in a phosphoric acid solution to obtain pretreated biogas residues; mixing the pretreated biogas residues, transition metal salt, biochar loaded with vitamin B12 and water with the mass being 8-15 times that of the pretreated biogas residues, and performing hydrothermal reaction for 1-4 hours under the conditions that the temperature is 180-250 DEG C and the pressure is 1.5-4 MPa to obtain a hydrothermal product; and activating the hydrothermal product for 1-2 hours under the protective atmosphere of 300-400 DEG C to obtain the modified biogas residue-based hydrothermal carbon. The surface Fe-Cu composite oxide sequentially catalyzes and oxidizes H2S into elemental sulfur and sulfate ions, the vitamin B12-loaded biochar can promote MA directional proliferation, the sulfate ions can competitively inhibit SRB substrate uptake, the quantity ratio of MA to SRB is increased, and the methane production efficiency is effectively improved.

The invention discloses a strain of lactobacillus fermentum LF-HF25 obtained by screening sour cucumber, which is preserved in the China Center for Type Culture Collection, the preservation number is CCTCC No.M20241566, the classification name is the lactobacillus fermentum LF-HF25, the preservation date is July 15, 2024, and the preservation address is Wuhan University, China. The lactobacillus fermentum LF-HF25 has the advantages that the preservation number is CCTCC No.M20241566, the classification name is the lactobacillus fermentum LF-HF25, the preservation date is July 15, 2024, and the preservation address is Wuhan University, China. The lactobacillus mucilaginosus LF-HF25 or the metabiotic microbial inoculum prepared from the lactobacillus mucilaginosus LF-HF25 has the functions of dispelling the effects of alcohol, protecting the liver, promoting digestion and nourishing the stomach, also has the effect of improving sleep, and has a wide application prospect.

The application provides an extendable digestive tract cannula and application thereof, and relates to the technical field of medical devices. The application comprises a first cannula, a second cannula and a degradable material. Opposite ends of the first cannula are a proximal end and a distal end, respectively. The first cannula is sleeved with the second cannula, and a double-layer structure is formed at the distal end of the first cannula. The double-layer structure is fixed by the degradable material. When the degradable material degrades, the second cannula moves towards the end face of the distal end of the first cannula. By setting the movable second cannula, the second cannula moves backward after the degradable material degrades, so that the length of the digestive tract cannula is extended. Since the length of the digestive tract cannula is increased, the area of intestinal absorption is also increased, the compensatory absorption function of the intestine at the distal end of the digestive tract cannula is weakened, the isolation effect of chyme and the intestine is improved, and the digestion and absorption effect of the intestine can be reduced for a long time.

The invention discloses a composition for regulating body weight through satiety-sugar control double channels. The composition is prepared from the following components in parts by weight: 5-25 parts of cinnamon extract, 1-20 parts of ganoderma lucidum EGCG composite powder, 10-40 parts of L-arabinose, 5-40 parts of composite fruit and vegetable fiber powder, 5-25 parts of fructus cannabis protein peptide, 1-20 parts of apple polyphenol, 1-20 parts of white kidney bean dietary fiber powder and 1-20 parts of agaricus bisporus powder. The composition is characterized in that digestion and absorption of carbohydrate are inhibited, the swelling ratio larger than or equal to 35 times is achieved through a composite fiber system, gastric emptying is remarkably prolonged, satiety hormones such as GLP-1 are adjusted, and the composition can be used as a non-alternative weight management product and is good in safety.

The invention belongs to the technical field of food processing, and relates to a method for preparing low-salt shrimp juice through rapid microbial fermentation. The method comprises the following steps: removing heads of shrimps, preparing meat paste, drying and crushing shrimp shells, and mixing the shrimp shells with the meat paste; carrying out enzymolysis treatment on the meat paste by using alkaline protease, and then carrying out high-temperature enzyme deactivation; mixing the shrimp meat and shrimp shell enzymatic hydrolysate mixture with soybean meal and bran, and sterilizing at high temperature; inoculating a complex microbial inoculant containing lactobacillus plantarum, saccharomyces rouxii, aspergillus oryzae, deep-sea bacillus subtilis and bacillus subtilis to prepare a mold starter, fermenting at 28 DEG C for 30 days, and finally filtering and sterilizing. According to the method disclosed by the invention, the availability of the raw materials is effectively improved, the fermentation period is shortened, efficient fermentation under a low-salt condition is realized, various basic indexes of the obtained shrimp juice product meet national standards, and the shrimp juice product is outstanding in flavor quality and has rich sauce flavor and sweet taste. In addition, the shrimp juice shows good antioxidant stability before and after digestion.

The invention provides a method for overspeed preparation of gene edited goldfish. The method comprises the following steps: S1, obtaining gobiocypris rarus without primordial germ cells as receptor fish; s2, designing a target spot for the goldfish amh gene, introducing a Cas9 / gRNA complex into a goldfish fertilized egg, performing sequencing verification to obtain a mutant individual, and feeding the mutant individual as a donor fish; s3, taking gonads of donor fish, cutting into pieces, performing enzymolysis digestion, filtering, and performing density gradient centrifugation to enrich donor germline stem cells; s4, transplanting the germline stem cells of the donor fish into the receptor fish body, and feeding to obtain the gene edited goldfish sperms and ova. S5, hybridizing and feeding goldfish amh mutant sperms and ova produced by gobiocypris rarus to obtain gene edited goldfish individuals. According to the invention, gobiocypris gobiocypris is used as a receptor, the cross-subfamily gene edited goldfish is used as a donor, and an efficient, stable and easy-to-popularize method for preparing the gene edited goldfish is provided by utilizing a belly borrowing reproduction technology.

The invention discloses a single-cell probiotic packaging method of thiolated guluronic acid oligosaccharide and a probiotic microcapsule, and relates to the technical field of biological medicines. The packaging method comprises the following steps: mixing a thiolated guluronic acid oligosaccharide solution with a probiotic suspension to form a probiotic-polysaccharide mixed solution; and adding a calcium chloride solution into the probiotic-polysaccharide mixed solution, and stirring to form the single-cell microcapsule encapsulating the probiotics. The packaging method can protect a single strain from being damaged by an external adverse environment to the maximum extent, and the survival rate is increased. Meanwhile, the obtained single-cell microcapsule can improve the digestion of the probiotics, the survival rate of the probiotics under the oxidative stress environment and the antibiotic combination, has high stability, and prolongs the intestinal residence time of the probiotics. An innovative solution is provided for the problems that in the existing medicine field, probiotic preparations cannot improve the gastrointestinal stress resistance of probiotics, and antibiotics lose efficacy when combined.

The invention discloses lactobacillus plantarum OBM7 and application thereof, and belongs to the technical field of biology. The strain is preserved in the Guangdong Microbial Culture Collection Center (GDMCC) on November 12, 2025, the preservation address is the 5th floor of the building 59, No.100 Courtyard, Xianlie Middle Road, Guangzhou, and the preservation number is GDMCC NO. 67282; and the probiotic preparation does not contain antibiotics or drug residues, and meets the development requirements of green and healthy breeding. The probiotic preparation can specifically prevent and control lamb diarrhea, significantly reduce the fatality rate of lamb diarrhea, effectively improve the survival rate of lambs, and provide targeted protection for lamb intestinal health; the lamb feed can regulate lamb gastrointestinal tract micro-ecological balance, improve digestion and absorption functions, significantly improve feed intake and feed conversion efficiency, and promote lamb growth performance improvement. Reliable technical support is provided for efficient, green and healthy breeding of lambs, high practicability and wide industrial application prospects are achieved, and the method has great significance in promoting green transformation of the livestock breeding industry.

The invention belongs to the technical field of traditional Chinese medicine tablet manufacturing, and particularly relates to an online quality prediction method for stomach invigorating and digestion promoting tablets based on multi-modal fusion. Comprising the following steps: synchronously acquiring hyperspectral imaging data and near infrared spectrum data of a stomach invigorating and digestion promoting tablet sample; processing the near infrared spectrum data through a one-dimensional convolutional neural network to extract a first spectrum feature; parallel extraction of spatial features and spectral features is carried out on the hyperspectral imaging data through a double-branch feature extraction network; performing intra-modal fusion on the extracted spatial features and the second spectral features through a cross attention mechanism to obtain hyperspectral fusion features, and performing cross-modal fusion on the hyperspectral fusion features and the first spectrum through cross-modal multi-head attention to generate fusion features; and outputting a quality index prediction value of the stomach invigorating and digestion promoting tablets through a regression prediction module based on the fusion features.

The invention relates to the technical field of circulating fluidized bed flue gas desulfurization, and discloses an automatic control system applied to a CFB desulfurization digester. The feeding unit is used for conveying quick lime and comprises a quick lime bin, a screw feeder and a belt conveying scale which are connected in sequence, and the belt conveying scale is in signal connection with the digestion automatic controller; the digestion reaction unit comprises a three-stage digester and a plurality of digestion thermometers arranged in the three-stage digester, and the digestion thermometers are in signal connection with the digestion automatic controller. The water-cement ratio is dynamically adjusted by monitoring the temperature change trend in real time, fluctuation of the quality of quick lime can be automatically adapted, and the limitation of fixed water-cement ratio control is overcome; by searching the optimal water-cement ratio, the full digestion of the quick lime is ensured, and the activity and uniformity of the slaked lime product are improved; and moreover, the dependence on artificial experience is reduced through automatic control, and the stability and continuity of system operation are improved.

The invention discloses a preparation method of highland barley prefabricated powder with a low glycemic index and application of the highland barley prefabricated powder in 3D printed biscuits. According to the method, firstly, cellulase and alpha-amylase are adopted for carrying out enzymatic modification treatment on highland barley flour, the content of anti-digestion starch (RS) is remarkably increased, the content of fast-digestion starch (RDS) is reduced, and therefore the modified highland barley flour with the predicted glycemic index (pGI) reaching the low-GI food standard (GI is smaller than or equal to 55) is prepared, and the dietary requirements of people with different metabolic requirements are met. Further, the modified highland barley powder is compounded with sodium alginate, glutamine transaminase is utilized for inducing and constructing a protein-polysaccharide gel network, the incubated and cross-linked dough is subjected to freeze drying and smashing, and the highland barley prefabricated powder with the low glycemic index is obtained.The 3D printing adaptability, the structural stability and the digestion resistance of the material are effectively enhanced through the method. The highland barley biscuit has the characteristic of low glycemic index, and is suitable for making healthy food for special crowds with diabetes and the like.

The invention provides a method for detecting the content of elements in carbonized resin. The method comprises the steps of resin pretreatment, instrument tuning, standard curve drawing, sample detection and the like. The method comprises the following steps: firstly, transferring a certain amount of dry carbonized resin into a cleaned PFA digestion tank, adding high-purity mixed acid, setting a segmented heating program to start microwave digestion, cooling to room temperature after digestion is completed, adding a proper amount of ultrapure water to dilute a digestion solution, and adding an internal standard solution and a chemical additive to obtain a to-be-detected sample solution; preparing a multi-element mixed standard solution according to the sample element types, adding the standard solution into the sample solution, and measuring the signal intensity ratio R of the to-be-measured element to the internal standard in each solution; and drawing a standard curve by taking the labeling concentration as a horizontal coordinate and R as a vertical coordinate, correcting the standard curve, and detecting the sample to be detected. The method is used for detecting the content of elements in carbonized resin, the carbonized resin is digested through microwaves, and the obtained solution is clear and can be directly subjected to ICP-OES (Inductively Coupled Plasma-Optical Emission Spectrometer) detection.

The invention provides a construction method, system and product of a false positive judgment model of a mutation site obtained by sequencing after enzyme digestion fragmentation and related application. Specifically, the false positive judgment model is constructed on the basis of a plurality of characteristic parameters associated with mutation sites obtained by enzyme digestion fragmentation sequencing; the characteristic parameters comprise scores obtained by performing reverse complementary sequence alignment on the front and back extension 30bp of the mutation site, the sequence proportion of 15 basic groups at the tail end of the mutation site, the Bayesian conditional probability of the extracted mutation site, and the KS test statistic of the extracted mutation site. Furthermore, the invention also provides a method for constructing the model by utilizing the crowd detection rate and the corresponding false positive. According to the method, the data characteristics of the false positive mutation sites are introduced by utilizing digestion fragmentation, so that the reliability of the digestion false positive mutation sites is objectively evaluated under the condition that high depth and large data volume are not needed, and the detection accuracy of the mutation sites can be remarkably improved.

The invention discloses a biological energy feed fermentation yeast based on enzyme-mineral synergistic activation and a preparation method thereof. According to the scheme, dual functions of mineral activation and microbial conversion are focused, clinoptilolite, sodium bentonite and kaolin are taken as mineral carriers, lignite humic acid is taken as a nutrient synergist, brown sugar, rice bran and bran organic matrixes are matched, and mineral lattice structures are broken through mechanical crushing and biological enzymolysis pretreatment, so that the mineral active substances are obtained. And through a double-stage fermentation process of'aerobic fermentation to activate flora and anaerobic aging to enrich metabolites' of microorganisms, mineral ions, humic acid active ingredients and probiotic metabolites are released to the maximum extent, and finally, the high-quality biological energy feed fermentation yeast with nutrition supply, digestion promotion and immune regulation functions is formed. According to the bioenergy feed prepared by conversion of the fermentation yeast, the feed crude protein improvement rate is greater than or equal to 20%, the crude fiber degradation rate is greater than or equal to 40%, the feed conversion rate is improved by 10-15%, the intestinal disease incidence rate is reduced by 60-70%, and the bioenergy feed is suitable for various livestock and poultry and aquaculture scenes.

The invention belongs to the technical field of microcapsule preparation and probiotic embedding, and particularly relates to a potato resistant starch-based lactobacillus plantarum microcapsule as well as a preparation method and application thereof. The preparation method comprises the following steps: S1, preparing the potato type II resistant starch; s2, preparing a bacterial suspension; and S3, preparing the lactobacillus plantarum embedded microcapsule. The potato starch is subjected to enzymolysis and drying treatment to obtain the potato type II resistant starch, and digestible starch components can be specifically eliminated; then, potato type II resistant starch, sodium alginate, Tween 80, soybean oil and calcium chloride are used for forming an embedding system for embedding lactobacillus plantarum, a compact and stable microcapsule network structure is constructed, the microcapsule network structure is good in stability and not prone to digestion, absorption and decomposition, the ionic crosslinking-hydrogen bond synergistic interaction is achieved, and the lactobacillus plantarum microcapsule is prepared. The embedding effect and the survival rate of the lactobacillus plantarum are improved.

The present application provides a probiotic microcapsule and a preparation method thereof. The probiotic microcapsule comprises a core material made of probiotics, a freeze-drying protective layer made of a freeze-drying protective agent and a wall material made of polysaccharides, wherein the freeze-drying protective layer is interposed between the core material and the wall material. The freeze-drying protective agent used in the probiotic microcapsule of the present application can reduce the damage to the bacterial body in the freezing and drying process through synergistic effect; and the wall material can form an acid-stable, dense and hard shell outside the bacterial body, greatly improving the stress resistance and stability of the probiotic in the production, storage and digestion processes. The probiotic microcapsule of the present application can be used for preparing food, cosmetics, medicines and feed.

The invention belongs to the technical field of food processing, and particularly relates to a product with peony peptide and ginseng peptide as main raw materials and a preparation method of the product. According to the invention, leftovers such as ginseng root hair and peony seed meal are used as raw materials, so that the production cost is greatly reduced, and the prepared product is presented in the form of a solid beverage and is convenient to carry and drink; the ginseng peptide is prepared by adopting a steam explosion and biological enzymolysis technology, the peony peptide is prepared by adopting a microbial fermentation mode, the molecular weight of the polypeptide is reduced, digestion and absorption are facilitated, meanwhile, the yield and oxidation resistance of the peptide are improved by adopting the microbial fermentation mode, the highest yield can reach 45.5%, and the highest oxidation resistance can reach 72.5%; besides, isomaltulose is also added while the bovine bone collagen peptide powder, the ginseng peptide powder and the peony peptide powder are adopted, so that the taste of the product is improved, the reconstituability of the product is improved, the fluctuation of blood sugar and insulin level is not caused after the product is taken, and the product can also be drunk by diabetics.

The present application relates to a kind of lactic acid powder scale, continuous production equipment and production method.Lactic acid and calcium lactate are used as raw materials, first, both are input simultaneously according to the set ratio into first hollow paddle dryer, then input into second hollow paddle dryer to complete mixing, drying, lactic acid dehydration in raw material lactic acid digestion and its eutectic with calcium lactate etc.Process, then the mixture is input into pulverizer to be crushed, finally, the target lactic acid powder product is collected and screened by cyclone separator and matching screen.The hollow paddle dryer and its matching equipment used in the present application not only ensure the full mixing of raw materials, but also have heating and drying functions, which can realize the hydrolysis and conversion of lactic acid anhydride, lactylate, poly-lactylate in various specifications of lactic acid raw materials and its eutectic with calcium lactate, drying one-step continuous completion while mixing the feed, and finally shorten the production cycle of the usual process about 4-30 days to the present application process on the same day or shift.

The invention belongs to the technical field of traditional Chinese medicines, and particularly relates to a traditional Chinese medicine composition for treating gastroesophageal reflux cough and a preparation method thereof. The traditional Chinese medicine composition disclosed by the invention is constructed by carefully selecting a medicine formula under the guidance of a traditional Chinese medicine theory and clinical experience and through a compatibility theory of monarch, minister, assistant and guide of traditional Chinese medicines. In the traditional Chinese medicine composition, the inula flower has the effects of promoting blood circulation, removing stasis and turbidity, clearing the airway and removing phlegm and fluid retention, and the mangnolia officinalis has the effects of promoting qi circulation, removing food retention, calming adverse-rising energy and relieving asthma, and both serve as monarch drugs; the dried orange peel has the effects of regulating qi and removing stagnation, the poria cocos has the effects of tonifying spleen, eliminating dampness and phlegm and breaking up the source of phlegm, and the bulbus fritillariae cirrhosae has the effects of clearing heat and moistening lung and resolving phlegm and relieving asthma; the rhizoma atractylodis macrocephalae has the effects of invigorating the spleen, replenishing qi, eliminating dampness and inducing diuresis, and the endothelium corneum gigeriae galli has the effects of promoting digestion and invigorating the stomach and is an assistant and guide drug. The whole prescription is ordered in monarch and minister, focuses on pathogenesis, is rigorous in prescription, has the effects of relieving cough and asthma, clearing heat and moistening lung, and strengthening spleen and stomach, and treats both symptoms and root causes of cough.

The invention belongs to the field of detection, and particularly relates to a method for detecting the migration amount of nine metals in a cosmetic packaging material and application of the method. The method comprises the following steps: sample acquisition: taking cosmetic simulation liquid; sample migration; sample pretreatment: taking the cosmetic simulation liquid in the packing material, and respectively carrying out the following treatments: filtering the acid-containing cosmetic simulation liquid through a filter membrane; heating the alcohol-containing cosmetic simulation liquid to be nearly dry, fixing the volume by using nitric acid, and filtering; adding nitric acid into the oil-containing cosmetic simulation liquid, heating for pre-digestion, cooling to room temperature after the pre-digestion is completed, carrying out microwave digestion, heating until no yellow smoke is generated after the digestion is completed, fixing the volume by using deionized water, and filtering; an ICP-MS instrument is adopted for testing, and data acquisition and processing are carried out; and preparing a standard solution, and calculating to obtain the content of each element. Nine elements can be detected at the same time, and the detection efficiency can be effectively improved; the pretreatment method is designed for different cosmetic simulation liquids, and the detection accuracy can be improved.

The utility model discloses a smashing device for fishery feed processing. The smashing device comprises a U-shaped support, a shell is fixedly connected to the U-shaped support, a feeding port is formed in the shell, a smashing assembly is arranged in the shell, and a discharging port used for outputting materials is formed in the shell. According to the feed crushing device, the shell and the crushing assembly are arranged and matched with each other, so that feed raw materials can be crushed, and crushed feed can be output outwards through the screens during crushing through the screen drum and the screens with different pore diameters arranged on the screen drum, so that the particle size of the crushed feed can be accurately controlled, and the crushing efficiency is improved. Through the cooperative arrangement of the circular track and the limiting assembly, the use state of the screen drum can be flexibly adjusted according to requirements, and different production requirements can be fully met by replacing and using the screens of different specifications, so that feed of different particle sizes is produced, the ingestion efficiency is improved, digestion and absorption are promoted, and the nutritional requirements of different fishes are met.

This invention belongs to the technical field of environmental health risk assessment and in vitro toxicology evaluation, specifically relating to an in vitro evaluation method for the human fate assessment of oral exposure to chlorinated antibacterial agents. This invention establishes an integrated evaluation process combining simulated digestion, liver metabolism, metabolite screening, and toxicity prediction. It can systematically characterize the in vitro fate process after oral exposure to chlorinated antibacterial agents and introduces a computational toxicology prediction platform to predict the toxicity endpoints of metabolites, identifying the risk of metabolic activation or enhanced toxicity, thus compensating for the shortcomings of focusing only on the parent compound.

Biostimulant compositions made by digestion of Ecklonia maxima feedstock, and methods of promoting plant growth by contacting a plant, plant seed or plant growth medium with such compositions.

The utility model discloses a COD (Chemical Oxygen Demand) digestion device, relates to the technical field of water quality detection instruments, and solves the problems that when the existing COD digestion device is not used, a conical flask and a return pipe are usually directly placed on the COD digestion device, no protective device is arranged outside the conical flask and the return pipe, and external dust directly falls on the device when the conical flask and the return pipe are placed for a long time, so that the subsequent use is influenced. According to the technical scheme, the problems that a conical flask, a backflow pipe and other glassware are damaged due to the fact that the conical flask and the backflow pipe are easily touched by mistake, and using is inconvenient are solved, the device comprises a groove body, two L-shaped supports and a main machine body, the two symmetrical L-shaped supports are fixedly installed on the upper surface of the rear side of the groove body, and the bottom of the main machine body is fixedly connected with the top planes of the L-shaped supports. According to the utility model, through the matching design of the two L-shaped protective plates and the back plate, the conical flask and the return pipe in the COD digester are sealed and shielded, so that external dust is not easy to directly fall on the conical flask and the return pipe, and the follow-up use is facilitated.

The invention relates to the field of pasturing livestock nutrition and feed resource development, and particularly discloses an application method of a digestion and emission reduction functional composite preparation for pasturing cattle in saline-alkali soil, and the application method comprises the following steps: S1, selecting Allium mongolicum and Stellera chamaejasme as raw materials, and screening an optimal mixing ratio through in vitro rumen fermentation; s2, preparing a granular composite preparation according to the optimal proportion; s3, supplementary feeding is conducted on the saline-alkali land grazing cattle according to the fixed dosage. The method solves the problems of low digestibility and high methane emission of saline-alkali soil grazing cattle due to ingestion of low-quality forage grass, and solves the technical gaps that Allium mongolicum and Stellera chamaejasme are wasted as traditional toxic weed resources, and single grass seeds are difficult to synergistically realize digestion promotion and methane emission reduction, improves the digestibility of saline-alkali soil grazing cattle and nitrogen utilization efficiency, and improves the economic benefit of the saline-alkali soil grazing cattle. Methane emission is synchronously reduced, toxic weeds are converted into functional indigenous grass, the feed source is expanded, the breeding cost is reduced, the technology adapts to the grazing scene, operation is easy and convenient, and large-scale application and popularization are easy.

The present invention relates to a method for preparing esterified flour as resistant starch, through cross-linking by esterification process through hot air oven and alternative method (reactive extrusion), comprising the steps of: for hot air oven, preparing acid aqueous solution; adding flour into the solution; incubating, and drying the slurry in hot air oven to get esterified flour; and washing the flour, and the resistant starch processed by the method thereof and for reactive extrusion, preparing and mixing flour with citric acid aqueous solution; reactively extruding the dried mixed flour; feeding the extruded dried mixed flour; adjusting a screw rotation speed of the extruding machine; stabilizing the weight of the starch citrate extrudate; grounding and sieving the stabilized starch citrate extrudate; and removing unreacted citric acid, and the neutral acid-base resistant starch citrate product processed by the method thereof. The purpose of the invention is to produce resistant starch citrate classified as resistant starch type 4 (RS4) to improve the digestion-resistant property of flour to be the key ingredient of the food helping develop the world food products, in the manufacturing scale, to have properties beneficial to health, as well as to add value to plant- based flour products.