35results about How to "Overcome residual" patented technology

The invention discloses a method for separating and preparing instant tea by use of multilayer membranes. The method comprises the following steps: performing conventional treatment such as extraction, filtering and the like on tea leaves; filtering through a microfiltration membrane film, an ultrafiltration film and a nano filter membrane to obtain the tea filtered concentrated liquid; and drying to obtain the instant tea. Through the method disclosed by the invention, harmful germs, useless components and pesticide residue in tea leaves can be removed, the content of heavy metals such as lead and the like can be obviously reduced, and the quality and sanitation index of the tea leaf product are improved.

The invention provides a manufacturing method of a PCB (Printed Circuit Board). The manufacturing method comprises the following steps: manufacturing sub-boards of the PCB, wherein each sub-board comprises a full-copper sheet surface layer, a substrate layer and a circuit pattern surface layer; performing brown oxidation on the circuit pattern surface layers of the sub-boards; sequentially stacking a PP (Propene Polymer) sheet and adjacent sub-boards on the circuit pattern surface layers of the sub-boards, stacking copper foils on the full-copper sheet surface layers of the sub-boards and then laminating; tearing off the copper foils The invention also provides a PCB which is manufactured by use of the method. The method can be used for improving the PCB manufacturing quality.

The invention belongs to the field of a feed additive, and more particularly provides a feed additive for chickens, which is formed by mixing the components by mass percent: 50-80% of turmeric residue, 10-30% of ginseng residue and 10-30% of tea residue. When in use, 1-4% of feed additive is added into basic ration by mass percent. The feed additive has the performance of promoting parturition ofthe chickens, has the function of improving the immunity, is capable of overcoming the defects of residue and side effects of antibiotics and chemical synthesis additives, and solves the problem of environmental pollution caused by processing residues of plant extraction industry.

The invention discloses a method for extracting shinyleaf yellowhorn seed kernel oil with a supercritical or subcritical fluid, which comprises the following steps: (1) selecting shinyleaf yellowhorn seed kernel, and pulverizing to 10-120 meshes; and (2) extracting the pulverized shinyleaf yellowhorn seed kernel in the step (1) with a supercutical fluid or subcritical fluid to obtain the shinyleaf yellowhorn seed kernel oil, wherein the residual material is shinyleaf yellowhorn dregs. Compared with the traditional pressing method, the method disclosed by the invention obviously enhances the oil extraction rate, and avoids the problems of severe damage of unsaturated fatty acids and other components in oil, and protein denaturation at high temperature in the pressing method. Compared with the leaching method, the method disclosed by the invention solves the problems of solvent residues, complex after-treatment process and high tendency of environmental pollution. According to the method disclosed by the invention, the oil extraction rate is not lower than 50%, the protein content in the shinyleaf yellowhorn dregs is not lower than 55g/100g, and the obtained oil product has high quality.

The invention provides a medicinal composition for preventing and controlling moss. The medicinal composition is formed by uniformly mixing 0.1-10 parts by weight of copper sulfate and 1-50 parts by weight of fructus cnidii water extract. The medicinal composition is mainly used for removing moss on a soil surface or in a pool, and the effect of the medicinal composition is superior to that of single copper sulfate and prometryn. The invention also provides a method for preventing and controlling growth of moss in a fritillaria planting greenhouse. The method comprises the following steps: keeping ventilation in the greenhouse, and illuminating for 1-2 hours every other day; mixing the copper sulfate and the fructus cnidii water extract, adding water into the mixture so as to prepare a medicinal liquid; spraying the medicinal liquid in a dosage of 500-800ml per square meter on the soil surface in the fritillaria planting greenhouse. The medicinal composition is small in dosage and durable in drug effect, cannot cause hazard to the environment, and can be used for overcoming the defect of drug residues of existing chemicals; meanwhile, the method has the advantages of simplicity in operation, safety in use and exact curative effect.

The present invention provides a mud shale thermal release C5-C14 hydrocarbon preparation and online chromatographic analysis method, which comprises that: 1, a mud shale sample is grinded into particles, and are in the quartz sample boat of a tubular furnace; 2, the tubular furnace is heated under helium gas purging, and hydrocarbon components of the sample are enriched in a liquid nitrogen cold trap; and 3, after completing the enriching, a chromatograph is started, the online enriching tube is rapidly heated, and the thermal release hydrocarbon enters the chromatographic column through a high temperature six-way valve along with carrier gas so as to separate. With the mud shale thermal release C5-C14 hydrocarbon preparation and online chromatographic analysis method of the present invention, the incomplete heavy-component thermal release caused by the large sample particles or the low thermal release temperature is avoided, the online chromatographic analysis and the sample preparation for other analysis items can be concurrently performed, the oil-rock comparative study can be performed, the mud shale can be subjected to quantitative evaluation, and advantages of convenience and environmental protection are provided.

The invention relates to a urinary catheter, wherein at least the insertable part of the urinary catheter is coated with a hydrophilic lubricating coating, a coating material composition containing aphotocurable polymer is coated on the surface of the urinary and is cured through illumination to form the hydrophilic lubricating coating, and the photocurable polymer is formed by copolymerizing a water-soluble polymerizable photosensitive monomer with a specific structure and a hydrophilic monomer. The urinary catheter disclosed by the invention has advantages of good lubricating property, excellent biological safety and high firmness.

The invention belongs to technical methods for eliminating algae in water, and particularly relates to a botanical algaecide for filamentous algae and a preparation method of the botanical algaecide. The botanical algaecide comprises pine needles, willow leaves and metasequoia leaves. The preparation method includes: cleaning, drying, smashing and screening the pine needles, the willow leaves and the metasequoia leaves, and mixing the screened materials proportionally. The botanical algaecide for the filamentous algae has the advantages that natural plant sources including fallen leaves of familiar plants are taken as raw materials, the preparation method is simple, and the filamentous algae can be eliminated quickly and effectively.

The invention provides biological active peptide for promoting growth of a piglet. The biological active peptide comprises an amino acid sequence shown in SEQ IDNo.1, the absorption and utilization rate of nutrient substances in feed for the piglet can be obviously increased through the biological active peptide, growth and development of the piglet can be promoted, the morbidity can be reduced, and the survival rate of the piglet can be increased. Furthermore, the preparation method of the biological active peptide for promoting growth of the piglet and application of the biological active peptide to promoting growth of the piglet and reducing the death rate of the piglet are provided. The biological active peptide for promoting growth and development of the piglet is generated under the synergistic effect of multiple kinds of enzyme production probiotics and is applied to the piglet, constructive metabolism and lipolysis of the organism are promoted, protein synthesis is promoted, and the aims of promoting growth of the piglet and increasing the growth speed of the piglet are achieved. The function of promoting growth and development of the piglet is achieved by adjusting the hormone level of an endocrine system, the problem of hormone residues is solved, and the aim of healthy and environment-friendly breeding is achieved.

The invention belongs to the technical field of natural pigment extraction. The purposes of the invention are to extract anthocyanin products from ipomoes batatas by acidic oxidation potential water by adopting an economic, safe and effective problem method aiming at the problem existing in a technology for extracting anthocyanins from the ipomoes batatas and obtain starch, proteins and a mucopolysaccharide product by extraction, so that values added of the ipomoes batatas are improved, and the method for extracting the anthocyanins from the ipomoes batatas by the acidic oxidation potential water is provided for comprehensive utilization of the ipomoes batatas. The method comprises the following steps: cleaning the ipomoes batatas, soaking the artificial acidic oxidation potential water with a pH value of 2.0-4.5, crushing, pulping, separating purple sweet potato residues, naturally precipitating, performing filtration and membrane filtration twice on an upper-layer anthocyanin aqueoussolution, and absorbing, eluting and concentrating a filtrate to obtain the pasty anthocyanins; drying and crushing the pasty anthocyanins to obtain the solid anthocyanin products. The method provided by the invention has the benefits that the consumption of a chemical reagent and the water is reduced, the product yield is improved, the extracted anthocyanins are ensured to be stable in structure, the ipomoes batatas are comprehensively utilized, the values added are improved, and economic, social and environmentally-friendly benefits are good.

The invention provides a steady-state maize yellow pigment preparation method. The preparation method comprises the following steps: (1) removing starch from maize yellow powder, carrying out a steamexplosion treatment, extracting with alcohol, centrifuging, and collecting the supernatant to obtain a crude extract of maize yellow pigment; (2) carrying out membrane filtration and separation on thecrude extract of maize yellow pigment by using a membrane with a molecular weight cut-off of 3000Da, and collecting permeate to obtain a purified extract of maize yellow pigment; (3) evaporating andconcentrating the purified extract of maize yellow pigment to obtain a concentrate of maize yellow pigment; and (4) adding microporous starch into the concentrate of maize yellow pigment, uniformly mixing, drying, adding an water solution of gelatin and maltodextrin to obtain a mixed solution, adding ascorbyl palmitate, carrying out a homogeneous emulsification treatment to obtain a mixed emulsionof maize yellow pigment, and carrying out spray drying to obtain the microcapsule steady-state finished product of maize yellow pigment. The prepared maize yellow pigment is high in yield and good instability.

The invention relates to a synthesis method of a compound as shown by the formula (I), namely chiral beta-amino acid: an aromatic aldehyde compound. An aromatic aldehyde compound and a chiral amine auxiliary form Schiff base, and then the Schiff base is reduced to prepare an intermediate compound as shown by the formula (IV); an ester group and an acyl group are removed, and crystallization is performed to finally obtain an optically active product. The method is simple in process, high in yield and high in purity; the product is high in optical purity; no harsh reaction conditions exist; different corresponding isomers are obtained by selecting different chiral auxiliaries; the synthesis method has small pollution and is very suitable for industrial production. The formula (I) and the formula (IV) are respectively as follows: as shown in the specification.