41results about How to "Reduce organic acid content" patented technology

A method for promoting the colouring on fruit (apple, pear, peach, grape, etc) features that the 5-aminolevulinic acid (ALA), or levulinic acid (LA)1 or glutamic acid (Glu) is applied to the fruit.

The invention relates to an agent for promoting fruit coloration of Nanguo pear. The agent is aqueous and dedicated for Nanguo pear, and can increase the 'red fruit' rate by regulating and controlling the synthesis and metabolism of anthocyanidin in Nanguo pear. The agent contains the following components: uniconazole 0.1g / L, sucrose 1g / L, potassium sulfate 1g / L, calcium chloride 3g / L, levulinic acid 0.1g / L, glutamic acid 1.0g / L, tyrosine 0.3g / L, phenylalanine 0.3g / L, boric acid 0.3g / L, Tween 100 1ml / L, and water in balance. The agent is prepared by the following steps: (1) respectively weighting uniconazole, sucrose, potassium sulfate, calcium chloride, levulinic acid, glutamic acid, tyrosine, phenylalanine, boric acid and Tween 100 at the given ratio; (2) respectively dissolving the materials in water, wherein uniconazole is dissolved with methanol; glutamic acid, tyrosine and phenylalanine are dissolves with distilled water at 100 DEG C; and potassium sulfate and calcium chloride are dissolved with distilled water at 50-70 DEG C; mixing after dilution; adding water until the desired concentration; and stirring thoroughly to obtain the final product. The agent can increase the 'red fruit' rate of Nanguo pear by 14%, and is convenient to use and harmless and innoxious to human body and environment.

A fruit induction coloring agent composition is prepared from, by weight, 1-3 parts of natural abscisic acid, 18-22 parts of isopentennyladenine with the mass content being 0.02%, 9-12 parts of ammonium molybdate, 38-42 parts of citricacide-titanium chelate, 18-22 parts of glycine, 1-3 parts of n-propyl dihydro-jasmonate and 6-10 parts of monopotassium phosphate. The composition does not contain ethephon and has no side effects like threshing and leaf falling; in the fruit swelling stage, fruits quickly swell, the fruits can be quickly colored within one week in the early stage of fruit coloring, the sugar degree is increased, the natural anthocyanin content is increased, the fruits can come into the market 7-10 days earlier, quality of fruits processed by a fruit induction coloring agent is improved, storage and transport performance is improved, photosynthesis can be enhanced, the chlorophyll content is increased, activity of peroxidase is improved, and absorption and transport of plants to nitrogen, phosphorus, potassium and other microelements are promoted.

The invention discloses a method for coproducing 5-hydroxymethyl furfural, 4-vinylphenol and bio-oil by multi-stage pyrolysis of corn stalk, belonging to the technical field of biomass energy utilization. The method comprises the following steps of: conducting rapid pyrolysis on corn stalk under anaerobic condition at 220-180 DEG C, 300-380 DEG C and 450-550 DEG C respectively; and after gas-solid separation, condensing a pyrolysis gas so as to respectively obtain a liquid product which is rich in 5-hydroxymethyl furfural, a liquid product which is rich in 4-vinylphenol and bio-oil. The method is simple in process; a method for high-valued utilization of the corn stalk is provided; and meanwhile a way for producing 5-hydroxymethyl furfural and 4-vinylphenol on a large scale is developed, and at the same time high-quality bio-oil is coproduced.

The invention provides a special fertilizer for slow-release of melon and a preparation method thereof. The special fertilizer for slow-release of melon includes the following components: 20-30% of vermicompost, 2-4% of Bacillus megaterium and 5% of urea formaldehyde in terms of mass percentage. ‑11%, Monoammonium Phosphate 4‑8%, Ammonium Nitrate 10‑20%, Calcium Nitrate 5‑15%, Potassium Sulfate 5‑15%, Potassium Chloride 10‑12%, Superphosphate 8‑12%, Calcium magnesium phosphate fertilizer 5-9%, clay 4-6%, nitrification inhibitor 0.1-0.2%, compound antibacterial compound 1-2%. The present invention uses vermicompost as the main raw material, which can provide organic nutrients for crops, and at the same time, Bacillus megaterium can synergize with the vermicompost to increase the yield of melon and improve the quality of melon. The slow-release special fertilizer of the present invention is prepared according to the nutrient law required for the growth of melon and the most suitable ratio of ammonium nitrate, and can be applied as a base fertilizer at one time, without topdressing in the later stage, and the slow-release special fertilizer of the present invention can reduce the fertilizer release rate and avoid fertilizer waste. , improve fertilizer utilization. In addition, the present invention specially adds compound bacteriostatic substances, which can effectively prevent the occurrence of fusarium wilt at the seedling stage of melon.

The invention discloses a processing method of sugar-free preserved green plums. According to the method, a salt pickling step is omitted; sugar alcohol type substances including xylitol, maltitol and the like penetrate into green plums so that the sweetness of the green plums is increased; meanwhile, part of contained organic acids can be transferred out; the content of the organic acids is reduced by using microbial fermentation so that a sweet-acid ratio suitable for eating is obtained; and in the process, the rigidity and the crispiness of the green plums are increased by the common effects of pectin methylesterase and calcium ions, so that the sugar-free healthy green plums which are suitable for being directly eaten are obtained. According to the method, the pectin methylesterase is used for catalytically hydrolyzing methoxyl of pectin to obtain pectic acid; the calcium ions obtained by ionizing the pectic acid and calcium lactate act with one another and the rigidity and the crispiness of the green plums are improved in the existence of a bridging effect of the calcium ions; and the problems that pulp is soft and rotten in processes of pickling and fermenting the green plums, and storing the preserved green plums are solved.

The invention relates to a simple extraction for the DNAs of microbes in a river environment sample. The method disclosed by the invention comprises: dividing the river environment sample into a water sample and a bottom sediment sample; and extracting the DNAs of the microbes in the water sample and bottom sediment sample respectively. The method can also be used for extracting any environment sample alone. In the invention, by combining a liquid nitrogen repeated freezing and thawing process, a sodium dodecyl sulfate (SDS) process, a lysozyme process and the like, the microbial cells in theenvironment sample can be fully lysed to fully release DNA; and analysis on bacterial diversity by polymerase chain reaction-denaturing gradient gel electrophoresis (PCR-DGGE) technique indicates theextraction method can effectively reflect the integrity and diversity of microbes in the river environment sample.

The invention provides a phosphogypsum soil improver and a preparation method thereof, which are used for improving soil polluted by heavy metals and belong to the field of soil improvers. The phosphogypsum soil improver is prepared from the following raw materials: phosphogypsum treated with active microorganisms is used as a carrier, and modified activated carbon and adsorbent are added; the quality of the phosphogypsum accounts for 40-60% of the total quality of the improver %; the mass ratio of the modified activated carbon to phosphogypsum is 1:3-5; the balance is an adsorbent; the soil improver of the present invention is rich in mineral content and has a variety of fermentation active substances, which can significantly improve the microbial activity in the soil. The activity further improves the phosphatase activity, which improves the repair ability of the soil, forms the elastic mechanism of the soil for heavy metal deposition, and significantly improves the treatment effect on heavy metal-contaminated soil.

The invention relates to a preharvest molecular intercalation quality inducer for Lingwu long jujubes. The inducer consists of a component A and a component B, wherein the component A contains 0.2g / L-0.5g / L of manganese sulfate, zinc acetate, boric acid, potassium dihydrogen phosphate, an SOD preparation, calcium chloride, linoleic acid, acetic acid, jasmonic acid methyl ester and arginine; and the component B contains heteroauxin, gibberellic acid, brassinolide, phytic acid and graphene. Specific to the improvement of the four preharvest qualities of color, fragrance, smell and taste, a quality improver A and a quality inducer B are respectively prepared and generate a synergistic effect, so that the plant absorption effect is improved, the maturing of fruits is promoted, and the qualities of color, sugar degree, brittleness and the like are improved.

The invention relates to a biological medicine and a preparation method and application thereof. The biological medicine is characterized by containing beneficial microorganisms. The biological medicine can restrain organic acid in human bodies from being too high, and reduce liver diseases and intestine and stomach diseases caused by too high organic acid.