1495 results about "Macromolecular Substances" patented technology

An apparatus for delivering a bioactive material to a subterranean layer of a skin architecture is provided that includes a head including one or more needles that are operable to penetrate a stratum corneum of a skin. A bioactive material is disposed on one or more of the needles, whereby movement of the head operates to pick up the bioactive material and to deliver a portion of the bioactive material to a selected location, the selected location being a dermis, or an epidermis, or both the dermis and the epidermis. In more particular embodiments, the bioactive material is a macromolecule substance that is part of a group of substances, the group consisting of a protein, a vitamin, a gene, a growth agent, a drug, and a peptide. The needles create an injury that triggers collagen production from one or more fibroblasts in the skin.

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

A method is provided for ablating brain tissue of a living mammal comprising: placing first and second electrodes in a brain of the living mammal; applying a plurality of electrical pulses through the first and second placed electrodes which are predetermined to: cause irreversible electroporation (IRE) of brain tissue of the mammal within a target ablation zone; and cause a temporary disruption of a blood brain barrier (BBB) within a surrounding zone that surrounds the target ablation zone to allow material in a blood vessel to be transferred to the surrounding zone through the temporarily disrupted BBB. Such methods are useful for delivering large molecule material within a blood vessel of the brain across the BBB, where the large molecule is otherwise blocked by the BBB from passing through the blood vessel into the brain.

The invention relates to a biogas slurry concentrate and an engineering preparation method, which belongs to the technical field of biogas slurry resource utilization. The method comprises the following steps: pretreating a membrane of a chicken manure biogas slurry, passing the pretreated biogas slurry through an ultrafilter membrane of an inorganic ceramic membrane for filtering impurity, passing through a nanofiltration membrane and a reverse osmosis membrane for interception and condensation, and final removing solid insoluble particles in the biogas slurry, the macro-molecule substance which is difficult to be absorbed by the crops, high power concentrated biogas slurry organic micromolecule nutrients. The method overcomes of disadvantages of easy membrane obstruction, severe damage, difficult high power condensation, difficult engineering stable operation in prior art, the obtained biogas slurry concentrate finished product is nano level organic state micromolecule substance, has the advantages of comprehensive and balanced nutrition, good water solubility, strong permeability, high activity, and high practical application value.

The invention provides a collagen facial mask and a preparation method thereof. The method comprises the following steps of: stirring 1 to 20 mass percent of aqueous solution of collagen and 0.1 to 2 mass percent of aqueous solution of a modifier at the temperature of between 20 and 60 DEG C for reacting for 15 to 45 minutes to obtain stock solution; adding a plasticizer, a functional additive and an antimicrobial growth promoter into the stock solution, and continuing to stir at the temperature of between 20 and 60 DEG C for 30 to 60 minutes to obtain mixed solution; and pouring the mixed solution into a die for forming, and drying at the temperature of between 30 and 60 DEG C for 3 to 10 hours to obtain the collagen facial mask. The prepared collagen facial mask is mainly formed by macromolecular substances extracted from natural animals and plants, safe and effective and does not have toxic or side effect, has the high heat stability, toughness, ductility and adhesion, and can be in fit with skin well and achieve the effects of preserving moisture doubly, softening cutin skin, resisting winkle, whitening the skin, restoring the skin and the like under the assistance of the functional additive; rejected materials of the facial mask are degradable, and do not cause environmental pollution; and the collagen facial mask can be widely applied in the field of daily cosmetics and has the excellent market application prospect.

The invention provides an anti-stress fermentation protein feed which is produced by composite bacterium inoculation and high-temperature and moderate-temperature fermentation of a plant derived protein raw material, a terrestrial animal derived protein raw material and a marine animal derived protein raw material. Macromolecular substances in the protein feed are digested and decomposed into micromolecular substances, stressors in nutritional ingredients are decreased, anti-stress active factors such as genistein, glutathione and glucosamine are increased, the immunity of fed animals is improved, and the protein feed shows a good anti-stress capability. The invention further provides a producing method of the anti-stress fermentation protein feed. The feed product with high functionality, good anti-stress effect and high economical efficiency is obtained with the adoption of the multiple derived protein raw materials, a specific formula and an appropriate matching ratio and by mixed fermentation through a special secondary fermentation process.

The invention discloses a feed additive for increasing the egg yield of hens and a preparation method thereof. The feed additive is prepared by fermenting the following traditional Chinese medicine raw materials of radix codonopsis, poria cocos, bighead atractylodes rhizome, malt, medicated leaven, semen cuscutae, epimedium and common cnidium fruit with lactobacilli, bifidobacteria, microzyme and bacillus subtilis. For the feed additive for increasing the egg yield of the hens, disclosed by the invention, traditional Chinese medicine components are compounded with microorganisms to form a composite traditional Chinese medicine micro-ecological preparation to be used as the feed additive, so that the number of beneficial bacteria can be increased, the ecological balance of intestinal tracts of organisms can be maintained, the growth of harmful bacteria is restrained, and the health of the intestinal tracts of the organisms can be improved; macromolecular substances, such as starches and proteins, in the feed, can be effectively decomposed, small molecular nutrient substances which are easy to digest and absorb for laying hens are released, and the utilization rate of the feed is increased; the egg laying rate, the production performance and the reproductive performance are obviously improved, the quality of eggs is improved, and the peak period of egg laying is prolonged; and the toxic substance is decomposed in the fermentation process, and the feed additive dost not have medicine residue and is free of toxic and side effects, so that the feed additive is safe and reliable.

The invention relates to the technical field of flue-cured tobacco modulation, in particular to a tobacco flue-curing method for a bulk curing barn. The flue-curing process of the tobacco flue-curing method includes a yellowing period, a withering period, a stem yellowing period, a tobacco leaf drying period and a stem drying period according to factors such as dry-bulb temperature, wet-bulb temperature, drying time, heating rate, variable speed ventilation and tobacco leaf change targets, a color fixing period in the traditional tobacco flue-curing method is prolonged at a fixed point and steady temperature under the condition of hot air circulation, and sufficient decomposition and transformation of amylum, protein and other macromolecular substances in tobacco leaves and forming of aromatic matters are promoted. The tobacco flue-curing method for the bulk curing barn is easy to operate, safe and secure, can keep tobacco leaf yellow to be stable, leaf shrinking degree to be good, oil content to be increased and tobacco leaf aromatic amount to be increased greatly, further can reduce or avoid tobacco leaf roasting damage of green smoke roasting, ash smoke hanging, black bad smoke, lousy smoke roasting and the like, and can obtain high-quality tobacco leaves through roasting.

The invention discloses a bioadhesive, which contains a polymer and a solvent, wherein the polymer is a graft of dopamine or mussel adhesive protein and oxidized graft A; the graft A is a graft of a macromolecular substance andan acrylate compound; a six-membered ring in a macromolecular substance in the oxidized graft A is bonded with an aldehyde group; the macromolecular substance is selected from at least one of hyaluronic acid, chondroitin sulfate, gelatin, polypeptide, alginic acid and chitosan; and the acrylate compound is selected from one of methyl methacrylate, methacrylate, glycidyl methacrylate and acrylic ester. The invention further provides a preparation method of the bioadhesive. The bioadhesive has the advantages of being good in biological activity, relatively good in mechanical property and biodegradable, and is capable of promoting tissue healing in a moist environment.

An ion source for ion implantation system and a method of ion implantation employs a controlled broad, directional electron beam to ionize process gas or vapor, such as decaborane, within an ionization volume by primary electron impact, in CMOS manufacturing and the like. Isolation of the electron gun for producing the energetic electron beam and of the beam dump to which the energetic beam is directed, as well as use of the thermally conductive members for cooling the ionization chamber and the vaporizer, enable use with large molecular species such as decaborane, and other materials which are unstable with temperature. Electron optics systems, facilitate focusing of electrons from an emitting surface to effectively ionize a desired volume of the gas or vapor that is located adjacent the extraction aperture. The components enable retrofit into ion implanters that have used other types of ion sources. Demountable vaporizers, and numerous other important features, realize economies in construction and operation. Achievement of production-worthy operation in respect of very shallow implants is realized.

The invention relates to a tobacco leaf curing process capable of improving the curing quality of a flue-cured tobacco variety KRK26, belonging to the technical field of flue-cured tobacco modulation processes. The curing process comprises the following steps of: regulating the humidity at low temperature to yellow tobacco leaves; stabilizing the temperature and removing moisture for withering; ventilating and dewatering for drying the leaves; and controlling the temperature and the humidity to dry leaf ribs. In the invention, the method of keeping the tobacco leaves at lower temperature to reduce water evaporation in the tobacco leaves and guarantee the water content of the tobacco leaves is adopted to solve the problems of less water and difficult yellowing of the tobacco leaves of the KRK26 variety in the yellowing period; the dry-bulb temperature is between 41 DEG C and 44 DEG C, and the tobacco leaves can be sufficiently dewatered and shrunk to reduce the cell membrane turgor; the tobacco leaf cell membranes cannot be broken between 45 DEG C and 48 DEG C so as to smoothly fix the color; and in the whole process of tobacco leaf curing, the wet bulb temperature is controlled tobe between 34 DEG C and 38 DEG C so as to actively promote the decomposition and the conversion of macromolecular substances and the synthesis of flavoring substances. The invention has the advantages of simple and convenient operation, safety and insurance, can ensure that the tobacco leaves of the variety KRK26 can be smoothly yellowed, timely subjected to color fixing and subjected to rib drying in good time and improves the tobacco leaf curing quality.

The invention discloses a polymerizable deep eutectic solvent. The polymerizable deep eutectic solvent is obtained by mixing a hydrogen bond acceptor and a hydrogen bond donor at 60 DEG C to 100 DEG C; the mol ratio of the hydrogen bond donor to the hydrogen bond acceptor is not less than 1 to 3. The polymerizable deep eutectic solvent disclosed by the invention can be subjected to polymerization reaction to prepare a macromolecular substance, and a new turn of technical innovation can be brought to the deep eutectic solvent; the knowledge of people that the deep eutectic solvent only has a dissolving effect in processes of preparing and purifying the compound and the like is changed, and an application field of the deep eutectic solvent is greatly expanded.

The invention discloses a preparation method of instant oat flour and relates to a preparation method of oat flour. The preparation method comprises the following steps: baking, cleaning, soaking, steaming and cooling oats, serving as raw materials, sequentially; glue milling the oats after pretreatment to prepare oat pulp, carrying out enzymatic hydrolysis, heating, boiling, and killing enzyme; and cooling an enzymolysis liquid, glue milling, homogenizing, drying, sterilizing and packaging a finished product. According to the preparation method disclosed by the invention, with the oats as the raw materials, by virtue of pretreatment, enzymatic hydrolysis technological treatment and spray drying, the instant oat flour which can keep multiple nutritional components and fragrance of oat is prepared; the prepared instant oat flour is moderate in taste, has self flavor of oat, keeps the soluble nutritional components in the oats, is also capable of providing extra plant proteins, fats and soluble dietary fibers and can be directly used for preparing an oat beverage; as macromolecular substances including starch, cellulose and proteins in the oats are hydrolyzed by virtue of an enzyme method, the viscosity of the starch of the oats is lowered, and the problems of water separating, gelation, precipitation and the like caused when the oats are applied to beverages are solved.

The invention relates to the technical field of insect feed processing, in particular to a method for preparing protein insect feed with organic waste and the prepared insect feed. The method comprises the steps of directly crushing the organic waste into powder, mixing with beneficial microorganisms for fermentation, and adding necessary nutrition additives to form the insect feed. The raw material is not required to be sterilized and dried at high temperature; the production cycle is shortened; the production cost is lowered; simultaneously, macromolecular substances of the organic waste are converted to small peptides, organic acid and sugar by physiologic metabolism of the beneficial microorganisms; various nutrient substances such as bio-enzymes and vitamins which have a prebiotic effect on high protein insects and are easier to absorb are produced; and the purpose of recycling is achieved. Fermentation heat energy produced during fermentation of the microorganisms is effectively utilized to kill pathogenic microorganisms possibly existing in the organic waste, and the biosafety of the insect feed is ensured.

The invention relates to a method for separating and extracting the compound of Amadori of a Maillard reaction midbody. The method is characterized by using reducing sugar and amino acid as raw materials and comprising the following steps: adding a catalyst; carrying out a reflux reaction in an alcohol solution; conducting pressure-reduction concentrating on reaction liquid in vacuum to obtain dry materials; adding water to dissolve the dry materials to obtain a reaction mixture aqueous solution; separating and removing reaction substrates and macromolecular substances in the reaction mixture aqueous solution by adopting a nanofiltration membrane or the combination of a hyperfiltration membrane and a nanofiltration membrane; intercepting the target Amadori compound; recrystallizing and drying to obtain the solid powder of the Amadori compound, which can be used as a spice, a food additive or a medical raw material, and the like. The method has simple process flows, convenient and simple operation, shorter extraction time and higher finished product purity and can save power energy, decrease the preparation cost and be easy to produce industrially.

The invention relates to a tissue engineering bracket material capable of physically embedding active substances and a preparation method thereof. The tissue engineering bracket material capable of physically embedding the active substances is prepared from 100 weight parts of biodegradable macromolecular substance and 0 to 20 weight parts of active substances, wherein the weight part of the active substances is not equal to zero; 100 weight parts of biodegradable macromolecular substance consists of 50 to 100 weight parts of synthetic macromolecular substance and 0 to 50 weight parts of natural macromolecular substance; the macromolecular substances and the active substances form a micromolecular nanofiber membrane or a composite macromolecular nanofiber membrane; and the active substances are bonded on the surface of the fiber membrane uniformly. The tissue engineering bracket material capable of physically embedding the active substances has high biocompatibility and sufficient mechanical strength, can be biodegraded, is suitable for proliferation and directed differentiation of stem cells, and has the functions of promoting cell migration adhesion and capturing the stem cells so as to induce regeneration of tissues such as bones, cartilages, nerves, skin and the like.

The invention discloses a fermented ginger and a manufacturing method thereof; the manufacturing method comprises the following steps that ginger is adopted as raw material, washed, cut into pieces or block, dried and sterilized; probiotic fermenting liquor is accessed into the ginger raw material, heat-preserved and fermented at the temperature of 28 DEG C to 39 DEG C; the used probiotics is lactobacillus, mould or bacillus spp, which can produce cellulase, amylase and protease, etc. and degrade cellulose, starch, protein and other macromolecular substances in the ginger; the invention adopts the probiotics as a zymogenic agent, and due to the existence of the probiotics, the growth of competitor is restrained in the processing, the storage period and the safety of the ginger is improved, the flavor of the ginger is improved, the nutrition of the ginger is strengthened, the bioactivity, the health and the utilization rate of the ginger are improved; the fermented ginger can be used as general seasoning, can also be used as the development of serial health foods with simple manufacturing process and stable result and is suitable for industrial production.

The invention provides a preparation method of Jin Tang tobacco essential oil. The preparation method is characterized in that by adopting the combined technologies of subcritical extraction and molecular distillation, the Jin Tang tobacco as a raw material is extracted and separated, so that the content of volatile aroma substances in the essential oil is effectively improved. By applying the Jin Tang tobacco essential oil into the cigarettes, the aroma quality and the mouthfeel of the cigarettes can be improved, and the sensory comfort of the cigarettes is improved; after the Jin Tang tobacco essential oil is applied to juice of electronic cigarettes, rich tobacco scent can be attached to the electronic cigarettes, so that the satisfaction is enhanced, and the disagreeable sweet feel of a solvent is reduced. The preparation method and the application have the greatest advantages that (1) compared with the steam distillation, the extraction rate of essential oil is greatly improved; (2) due to the combined use of the subcritical extraction and molecular distillation, the content of the nonvolatile macromolecular substances in the essential oil is reduced, the content of volatile aromatic substances is improved, wherein the contents of nicotine, solanone, neophytadiene, megastigmatrienone, farnesyl acetone, and the like are obviously improved compared with those in the essential oil extracted by the subcritical extraction technology, and therefore, the characteristic aroma of the tobacco is more outstanding.

The invention discloses a black mushroom cultivation material. The cultivation material is characterized by using hickory branch chips, nutshell chips and husk chips as main raw materials, and using bran, bean cake, calcium superphosphate, gypsum powder and the like as auxiliaries, wherein the water content is 63-65%. The invention further discloses a manufacturing method of the cultivation material. The manufacturing method and the cultivation material have the following advantages: 1, the hickory branch chips, the nutshell chips and the husk chips are insolate by sunshine, secondarily fermented or piled up to be aged, so that the toxic bacteriostats are degraded, and the macromolecular substances such as lignin and cellulose are decomposed to simple substances which are beneficial to absorb by black mushroom hypha, and the growth of the black mushroom hypha can be promoted; 2, the cultivation material proportion is reasonable, the bacterial material is good in breathability, the water-retaining property is strong, the effective mushroom quantity is a lot, the yield is high, and the biological efficiency is up to 130.3-142.6%; 3, the preparation method provides a solution for innocent treatment of hickory branch, nutshell and husk, and provides a new substrate for cultivating the black mushroom.

The invention relates to a preparation method of a composite base material for facial masks, which belongs to the technical field of facial mask base materials. The preparation method comprises the steps of dissolving any one of hydrophilic macromolecular polyvinyl alcohol, polyacrylonitrile and polylactic acid in an organic solvent, so as to prepare a spinning solution of which the mass fraction is 5 to 20wt%; adding any one of chitin, collagen, silk fibroin, chitosan, sodium alginate and fibroin or a mixture of several of the substances to the spinning solution, and uniformly mixing, so as to obtain a mixed spinning solution of which the mass is 2 to 12% of the total mass of the hydrophilic macromolecular substance and the organic solvent; performing ultrasonic treatment on the mixed spinning solution for 1 to 300 min; collecting the mixed spinning solution on a non-woven fabric support layer by using a processing method of an electrospinning technique, so as to prepare a required composite nanofiber membrane. The composite base material for the facial masks, which is prepared by using the preparation method, has the advantages of excellent antimicrobial property, good air permeability, good application to skin and no stimulation to skin and is favorable for improving the safety and hygiene of the facial masks when the composite base material is used for manufacturing the facial masks, and more essence can be absorbed.

The invention provides a preparation method of tobacco-aroma matters for tobacco sheets.The preparation method includes using an extraction-molecular distillation combined technology for separating purified tobacco raw materials to obtain the strongly-satisfying tobacco-aroma matters.By the extraction-molecular distillation combined technology, nicotine and characteristic tobacco aroma light constituents in tobacco extract are enriched and purified, and macromolecular substances such as cellulose, polysaccharide, pectin and protein adverse to smell absorption can be further removed.The tobacco sheets prepared from the tobacco-aroma matters are capable of remarkably increasing smoke concentration, strength and aroma of cigarette products and make smokers feel satisfied and comfortable strongly.

The invention discloses a biological treatment method of papermaking-method reconstituted tobacco raw materials and pulp, biological treatment is conducted twice on the papermaking-method reconstituted tobacco raw materials and pulp by means of the crude enzymes obtained through microbial fermentation, the object for the first biological treatment is materials which are extracted and tread rolled, and biological enzymes degrade cell wall substances and plays a role of enzymatic pulping; the second biological treatment is conducted in the potential elimination process after high consistency pulping is conducted and before low consistency beating is conducted, and the biological enzymes are acted on pulp fibers, further efficiently degrades macromolecular substances such as lignin, cellulose, hemicellulose, pectin and protein, conducts decoration or modification on the fiber surfaces, and plays the role of enzymatic beating. After the biological treatment is conducted twice, the cell wall substances in the materials and the pulp and undissolved macromolecular substances are degraded effectively, and the sensory quality of papermaking-method reconstituted tobaccos is promoted obviously.

An apparatus for delivering a bioactive material to a subterranean layer of a skin architecture is provided that includes a head including one or more needles that are operable to penetrate a stratum corneum of a skin. A bioactive material is disposed on one or more of the needles, whereby movement of the head operates to pick up the bioactive material and to deliver a portion of the bioactive material to a selected location, the selected location being a dermis, or an epidermis, or both the dermis and the epidermis. In more particular embodiments, the bioactive material is a macromolecule substance that is part of a group of substances, the group consisting of a protein, a vitamin, a gene, a growth agent, a drug, and a peptide. The needles create an injury that triggers collagen production from one or more fibroblasts in the skin.

The invention discloses a composite live bacterial organism purifying agent and a method for the production thereof, the biological purifying agent contains Bacillus subtilis KX-1 CCTCC No. M 208057, Bacillus subtilis KX-2 CCTCC No. M 208058, and Bacillus subtilis KX-4 CCTCC No. M 208060, and the total bacteria count is larger than 1x10<8>CFU / g. The biological purifying agent can effectively remove ammonia nitrogen and nitrite in water and improve the water pollution; and degrade organic macromolecules and reduce the rich nutrition level in water; and the three bacilli can decompose organic macromolecule matters in water into saccharide, amino acid, vitamin, bioactive substances (hormone), etc. that can be absorbed by animals and plants, thereby realizing the complementary nutrition and harmonious symbiosis, and forming a complex and stable microbial system in water by proliferation.

The invention provides a pleurotus cornucopiae cultivation material. The cultivation material is characterized by taking chestnut branch scraps, bud hull scraps and chestnut hull scraps as main raw materials and cottonseed hulls, bran, corn powder, gypsum powder and the like as auxiliary materials, wherein the water content of the cultivation material is 63-65%. The invention also provides a preparation method of the cultivation material. The cultivation material has the advantages that I. through sunlight exposure, accumulation aging and biological fermentation carried out on the chestnut branch scraps, the bud hull scraps and the chestnut hull scraps, not only are toxic antibacterial materials removed but also macromolecular substances are degraded, thus being favourable for absorption by pleurotus cornucopiae hyphae and enabling the hyphae to grow vigorously; II. the cultivation material is reasonable in matching, so that the fungi have good air permeability and strong water retaining properties, the quantity of effective mushrooms is large, and the biological efficiency of the cultivation material is 103.7-112.5%; and III. the cultivation raw material channel is widened, thus greatly reducing the production cost.

The invention discloses an oyster mushroom cultivation material. The cultivation material is characterized by using hickory branch chips, nutshell chips and husk chips as main raw materials, and using mushroom dreg, bran, calcium superphosphate, gypsum powder and the like as auxiliaries, wherein the water content is 63-65%. The invention further discloses a manufacturing method of the cultivation material. The manufacturing method and the cultivation material have the following advantages: 1, the hickory branch chips, the nutshell chips and the husk chips are insolated by sunshine, secondarily fermented or piled up to be aged, so that the toxic bacteriostats are degraded, and the macromolecular substances such as lignin and cellulose are decomposed to simple substances which are beneficial to absorb by oyster mushroom hypha, and the growth of the oyster mushroom hypha can be promoted; 2, the cultivation material proportion is reasonable, the bacterial material is good in breathability, the water-retaining property is strong, the effective mushroom quantity is large, the yield is high, and the biological efficiency is up to 130.3-142.6%; 3, the preparation method provides a solution for innocent treatment of hickory branch, nutshell and husk, and provides a new substrate for cultivating the oyster mushroom.

The invention discloses a method for preparing a functional alga fertilizer through co-fermentation of multiple strains. By employing the multiple-strain co-fermentation manner, macro-molecular substances difficult to utilize are degraded into micro-molecular polysaccharide, monosaccharide and nitrogen-containing compounds, and also a large amount of soil beneficial bacteria and multiple special-efficacy metabolites are generated, so that the biological activity of the alga fertilizer is improved and the production cost for producing the alga fertilizer by employing a biological fermentation process is reduced. According to the method, the destroying effects caused by strong base, high temperature and high pressure in the production process of the alga fertilizer are avoided, alga macro-molecular substances are degraded by various enzyme systems generated in the microbial fermentation metabolism process, and abundant nutrients in alga are fully kept. The product provided by the invention has an organic matter content of 45% or more, is abundant in trace elements such as iodine, manganese, boron, selenium and the like, and has the efficient live bacteria number of 200 million / g or more. According to the product, natural nutrient compositions, antibiotics and phytohormone are integrated, and the product has the composite efficacy of combining four fertilizers such as an inorganic fertilizer, an organic fertilizer, a microbial fertilizer and a trace-element fertilizer into one fertilizer and combining pesticides and fertilizers into one product, and has wide application prospect.

The invention discloses a preparation method of a high-nicotine tobacco extract. The preparation method of the high-nicotine tobacco extract belongs to the field of tobacco additives, and mainly comprises three steps of raw material pretreatment, subcritical extraction and molecular distillation. A baking process is adopted for pretreating tobacco leaves, so that reducing sugar of tobacco and a nitrogen-containing compound are promoted to generate maillard reaction, substances such as pyrone and furanone are produced, the baking aroma is improved, the reducing sugar content is reduced, the suction offensive odor is reduced, meanwhile, combined-state nicotine in the tobacco leaves is converted into a free state, and the content of the free-state nicotine is improved. A weak polar solvent is adopted for subcritical extraction, so that the extraction rate of tobacco feature aroma substances and the free-state nicotine can be improved; and low-temperature molecular distillation is combined, so that low-boiling-point aroma substances and the nicotine can be effectively enriched, the damage on thermosensitive substances due to high temperature is avoided, and meanwhile, the content of macromolecular substances such as pectin and protein in an extract is reduced. The method is simple in preparation process, simple and convenient to operate, and suitable for industrial production and application.

A high-purity oligoxylose is prepared from corn cob through pretreating by diluted acid, digestion, enzymolyzing by xylanase, refining, ultrafiltering, and nano filtering. Its advantages are high purity (90%) and low cost.