18 results about "Steam distillation" patented technology

This invention discloses a topical traditional Chinese medicine composition for relieving pain and its preparation method, belonging to the field of traditional Chinese medicine preparation technology. The topical traditional Chinese medicine composition for relieving pain is made from the following raw materials in parts by weight: Angelica sinensis 5-25 parts, Ligusticum striatum 5-20 parts, Lycopodium clavatum 10-35 parts, Artemisia argyi 5-25 parts, artificial Phellodendron chinense 3-18 parts, Clematis chinensis 10-40 parts, and Angelica dahurica 5-20 parts. This invention uses steam distillation to extract volatile oils and a dual-solvent gradient extraction method with the residue, which not only fully extracts the volatile fat-soluble components from Angelica sinensis, Ligusticum striatum, and Angelica dahurica, but also efficiently extracts the water-soluble components from artificial Phellodendron chinense, Lycopodium clavatum, and other medicinal materials. Experimental results show that the extraction rates of ferulic acid, ligustilide, imperatorin, and berberine hydrochloride in Example 1 of this invention reached 89.23%, 92.56%, 90.12%, and 93.45%, respectively, which are 110.7%, 223.1%, 75.8%, and 23.6% higher than those of conventional water decoction process, thus improving the utilization rate of raw materials.

This invention discloses a multi-target synergistic preservation method for fruits and vegetables based on the active ingredients of Torreya grandis aril, belonging to the field of fruit and vegetable preservation technology. The method includes the following steps: Step 1: Using Torreya grandis aril as raw material, Torreya grandis aril essential oil is extracted by steam distillation. This multi-target synergistic preservation method for fruits and vegetables based on the active ingredients of Torreya grandis aril combines four active ingredients—3-carene, D-limonene, δ-juniperol, and δ-juniperene—from the Torreya grandis aril essential oil with chitosan to construct an integrated synergistic preservation system of "antioxidant—enzyme inhibition—film protection—antibacterial action." This system protects the integrity of fruit cell membranes and delays softening and water loss, thereby overcoming the shortcomings of existing technologies that are single-function and unstable in effect. It achieves precise, multi-target intervention across the entire chain of postharvest physiological decline in perishable fruits and vegetables.

This invention discloses a targeted extraction method for honeysuckle and an integrated honeysuckle extract, relating to the field of plant active ingredient extraction technology. The targeted extraction method for honeysuckle includes the following steps: S1, preparing a glucose-citric acid natural eutectic solvent; S2, mixing honeysuckle powder with the glucose-citric acid natural eutectic solvent, performing ultrasonic-assisted extraction, and obtaining a first extract and filter residue after solid-liquid separation; S3, sequentially subjecting the filter residue to steam distillation and ethanol reflux extraction, collecting the upper oily layer of the azeotropic distillate as the second extract, and concentrating the ethanol reflux extract to obtain a third extract; S4, separating and purifying the first extract to obtain the first extract, and recovering the glucose-citric acid natural eutectic solvent; S5, mixing the first extract, second extract, and third extract. This invention achieves efficient and simultaneous extraction of multiple active ingredients from honeysuckle, resulting in an integrated honeysuckle extract with high activity.

The present application relates to a kind of high-purity nicotine preparation method derived from tobacco stem, belong to plant extraction technical field.This method is for the large amount of tobacco stem waste produced in the process of tobacco planting and baking, proposes an efficient nicotine extraction method.By crushing tobacco stem, using acid aqueous solution for acidification treatment, then using alkaline solution to adjust pH value and carry out steam distillation, collect distillate.Subsequently, using reverse osmosis membrane concentration and molecular distillation technology for purification, obtain high-purity nicotine solution.This method does not use organic solvent, reduces the security risk, at the same time improves the extraction rate and purity of nicotine, purity can reach 95%~99%, extraction efficiency is more than 85%.In addition, the method uses membrane distillation process to reduce energy consumption, reduce the loss of active ingredients, and further remove impurities through molecular distillation technology, prevent nicotine degradation and oxidation deterioration.The implementation of the present application not only realizes the high value-added utilization of tobacco stem, but also improves the economic benefit, reduces the pollution to the environment.

This invention discloses a method for preparing camphor root volatile oil, which is used for anti-oxidation, anti-aspergillus flavus, and inhibition of aflatoxin synthesis. The camphor root volatile oil of this invention is extracted by steam distillation, with a maximum volatile oil content of 3.34%. Gas chromatography-mass spectrometry analysis of the chemical composition of the camphor root volatile oil confirmed that the main components include camphor, 1,8-cineole, linalool, α-pinene, and sapinene. When applied to inhibit the growth and toxin production of Aspergillus flavus, a volatile oil concentration of 3 μL / mL completely inhibits aflatoxin production. This volatile oil also possesses antioxidant activity, with a half-maximal inhibitory concentration (IC50) for scavenging ABTS free radicals. 50 Below DPPH radicals, its lowest IC50 value is... 50 The values ​​were 0.6115±0.4240 mg / mL and 1.7658±0.2488 mg / mL, respectively. This volatile oil can also inhibit and control Aspergillus flavus contamination in Job's tears, and has application value in the food and health industries.

The utility model discloses an ultrasonic decompression water vapor distillation device, including water vapor generating system, distillation system, collection system, cooling system, vacuum system, ultrasonic system, water vapor generating system includes heat source, first three -neck flask, first bushing, gas guide connector, gas duct, reflux tube, second bushing, first glass tube, distillation system includes second three -neck flask, second glass tube, third bushing, fourth bushing, collection system includes distillation head, syringe, cooling system includes condenser pipe, vacuum system includes three -way air -bleed connector, vacuum pipe, pressure regulating valve, vacuum pump, ultrasonic system includes ultrasonic generator. Adopt the utility model to carry out water vapor distillation experiment, can reduce water consumption, reduce energy consumption, improve efficiency, have the advantages such as avoiding heat -sensitive organic matter to be destroyed simultaneously.

This invention discloses a continuous steam distillation extraction system for woody essential oils, relating to the field of woody essential oil distillation extraction. Based on a distillation tower, it incorporates a spiral flow channel and a multi-stage gradient inverted conical filter layer. The tower is divided into a distillation chamber, a filtration chamber, and a steam outlet chamber. During distillation, the temperature and pressure parameters of each chamber are collected in real time. Using the distillation chamber as the first stage and the steam outlet chamber as the second stage, single-domain cross-linking analysis is performed in conjunction with the filtration chamber parameters to generate action interference commands. These commands drive a cylinder rod to achieve online self-cleaning of the filter layer and dynamic spacing control. This enables deep vapor phase impurity removal and closed-loop control of the distillation process, extending the system's continuous operating time, ensuring stable pressure-temperature-vapor velocity balance within the tower, and improving the extraction rate and product quality of woody essential oils. Essentially, it maintains the stability of the working environment within the tower while preserving the basic function of vapor phase filtration.

This application relates to the technical field of fine chemicals, specifically disclosing a method for extracting chamomile volatile oil. The method disclosed in this application includes the following steps: soaking chamomile in a 5-20 wt% ethanol aqueous solution, performing low-temperature extraction, and filtering to discard the extract; soaking the residue in a 50-70 wt% ethanol aqueous solution, then performing ultrasonic extraction, filtering, and collecting the extract; soaking the residue from step S2 in a 70-100 wt% ethanol aqueous solution, then performing ultrasonic extraction, filtering, and collecting the extract; combining the extracts from steps S2 and S3 to obtain a chamomile ethanol extract, which is then subjected to rotary evaporation, salting out, and washing with water to obtain chamomile volatile oil. Using the method of this application, the extraction rate and core component content of chamomile volatile oil are significantly better than traditional steam distillation, and the energy consumption is lower, showing good prospects for industrial application.

This invention discloses a method for simultaneously separating multiple active ingredients from *Pterocarya stenoptera* essential oil, belonging to the field of natural product separation and purification technology. The invention includes the following steps: (1) sequentially subjecting *Pterocarya stenoptera* to steam distillation and molecular distillation to obtain *Pterocarya stenoptera* essential oil; (2) subjecting the *Pterocarya stenoptera* essential oil to dehydration and degassing to obtain pretreated essential oil; (3) subjecting the pretreated essential oil to two-stage molecular distillation to obtain fraction 1, fraction 2, and residual liquid; (4) subjecting fraction 1, fraction 2, and residual liquid to vacuum precision distillation to simultaneously separate multiple active ingredients from *Pterocarya stenoptera* essential oil. This invention features a green and environmentally friendly process, no organic solvent residue, low energy consumption, and strong controllability, enabling continuous industrial production. The purity of each monomer product is ≥98%, with the main component, methyl salicylate, having a purity ≥99%. This fully exploits the resource value of *Pterocarya stenoptera* essential oil and significantly increases the added value of the product.

This invention discloses rosemary as a preservative and its extraction process, belonging to the field of plant extraction technology. The process first involves soaking and pulping rosemary branches and leaves, followed by enzymatic hydrolysis using a compound enzyme. Subsequently, rosemary essential oil is separated by steam distillation, and the distillate residue is subjected to solid-liquid separation. The filtrate is concentrated and dried to obtain a water-soluble preservative, while the solid residue is subjected to ethanol extraction and purification to obtain a fat-soluble preservative. Finally, the three active components are mixed with preservative factors and excipients in appropriate proportions, granulated, and sterilized to obtain the final product. Compared with existing technologies, this invention achieves efficient comprehensive utilization of different polarity active ingredients in rosemary through a multi-step synergistic extraction process. The resulting rosemary preservative exhibits multi-component, multi-target synergistic antioxidant effects, with significant, long-lasting, and stable preservation effects, making it particularly suitable for meat product preservation.

This invention relates to the field of plant extraction technology and discloses a process for extracting rose petals. The process includes: slurrying fresh rose petals and adjusting the pH; suspending a mesh cage filled with macroporous adsorption resin in the slurry; adding a compound enzyme preparation for isothermal enzymatic hydrolysis; utilizing the difference between the mesh cage pore size and the material particle size to achieve physical phase isolation between the resin and the petal residue; and utilizing the resin to adsorb the released aroma components in situ during enzymatic hydrolysis. After enzymatic hydrolysis, keeping the mesh cage in place, inorganic salt electrolytes are directly added to the slurry, and the temperature is raised to boiling for steam distillation. Desorption is achieved through the synergistic effect of thermal field and salting-out, and the distillate is collected to obtain rose essential oil. This invention relieves the inhibition of enzymatic hydrolysis products through in-situ adsorption, improving the conversion rate of bound glycosides. The use of inorganic salt-assisted steam distillation instead of organic solvent elution significantly improves the essential oil yield while retaining key aroma components such as phenylethyl alcohol, avoiding solvent residue.

The utility model relates to a kind of methanol tank exhaust low-temperature aeration-distillation-catalytic combined processing device, belong to volatile chemical waste gas treatment equipment technical field, to solve the problem of less function of existing methanol tank exhaust treatment device, and poor treatment effect.It is composed of vertical multistage combined high-efficiency processing tower body and low-temperature aeration condensing unit, distillation unit, catalytic adsorption purification unit, safety prevention and control unit and PLC controller, using 0-5 ℃ low-temperature aeration water and waste gas reverse contact mass transfer strengthening, steam distillation purification methanol, and using MnO2-CeO2 composite catalyst realizes waste gas multistage processing, methanol removal rate is greater than or equal to 95%;It realizes standard discharge by grading processing different concentration waste gas, high concentration waste gas realizes resource by "aeration dissolution+ catalytic adsorption+ distillation recovery", medium and low concentration waste gas is discharged by standard by "low-temperature catalysis+ adsorption desorption", form multistage processing system, mass transfer efficiency is improved, and it is applicable to the treatment of different concentration methanol tank exhaust to realize standard discharge.

This invention discloses a traditional Chinese medicine composition for treating vascular cognitive impairment, its preparation method, and its application, belonging to the field of traditional Chinese medicine technology. It includes the following raw materials: stir-fried Atractylodes macrocephala, Fritillaria thunbergii, Ligusticum chuanxiong, Salvia miltiorrhiza, Curcuma longa, Acorus tatarinowii, Polygala tenuifolia, Cornus officinalis, Cistanche deserticola, Rehmannia glutinosa, Scrophularia ningpoensis, and borneol. Preparation method: First, the volatile oil is extracted by steam distillation and encapsulated with β-cyclodextrin; then, the lipid-soluble components in Salvia miltiorrhiza and Fritillaria thunbergii are extracted with ethanol; finally, the residue is combined with the remaining medicinal materials and decocted in water for extraction. Through the combination of Fritillaria thunbergii and borneol, the dual functions of "clearing inflammation + opening the blood-brain barrier" are achieved, increasing the brain concentration of lipid-soluble components such as tanshinone IIA. It significantly improves the learning and memory abilities of rats with vascular cognitive impairment, with efficacy superior to the Western medicine donepezil, and exhibits synergistic effects on multiple targets such as inhibiting NLRP3 inflammasomes and upregulating BDNF. This invention has a simple process, is suitable for industrial production, and has significant clinical application value.

This utility model discloses an ammonia nitrogen wastewater collection and treatment device, belonging to the technical field of wastewater treatment equipment. It includes a collection tank, with an inlet pipe for a booster pump extending from the top of the collection tank. The outlet of the booster pump is connected to the inlet pipe of a mixer. The outlet pipe of the mixer is connected to one side inlet of a heat exchanger, and the outlet pipe of the heat exchanger is connected to the inlet of a deammoniation tower. A pipe connects the top steam pipe of the deammoniation tower to the steam inlet of a condenser, and a pipe connects the bottom pipe of the condenser to the liquid inlet of a gas-liquid separator. By incorporating multiple treatment devices, the ammonia nitrogen wastewater undergoes steps such as alkali replenishment, stripping deammoniation, steam distillation, and condensation. The ammonia water is collected and stored in an ammonia water storage tank, while the residual tail gas is treated and purified by an ammonia scrubber and a line purification tower, achieving highly efficient treatment and recovery of ammonia nitrogen wastewater.

This invention discloses a method for preparing a traditional Chinese medicine compound essential oil preparation to improve sleep, belonging to the field of health product processing and preparation technology. The method selects seven medicinal and edible herbs, including jujube seed, polygala root, and sandalwood, and accurately combines them in a compound system to achieve both "calming the mind" and "nourishing the blood." It can quickly relieve insomnia symptoms such as frequent dreams, easy awakening, palpitations, and forgetfulness, and can also regulate the constitution of deficiency of both heart and spleen from the root. At the same time, it adopts a combination of supercritical CO2 extraction and molecular distillation purification process. Compared with steam distillation, supercritical CO2 extraction can retain heat-sensitive effective components such as jujube seed saponins and polygala root volatile oil to the maximum extent and avoid loss of effective components. Molecular distillation purification process can effectively remove impurities such as polysaccharides, proteins, and waxes from crude essential oils, greatly improving the transparency, stability, and user experience of essential oils, while reducing the risk of skin irritation.

This invention belongs to the field of high-value utilization of spice by-products and green extraction technology of natural products, specifically relating to a method for preparing antibacterial essential oil from Sichuan pepper seeds. The method couples atmospheric pressure dielectric barrier discharge cold plasma pretreatment with steam distillation to achieve efficient and clean extraction of Sichuan pepper seed essential oil. This method significantly overcomes the mass transfer barrier, greatly improving the essential oil extraction rate. Under optimal process conditions, the mass transfer resistance to essential oil release is significantly reduced, with an extraction rate as high as 2.33%~2.39%, an improvement of approximately 14.08% compared to traditional steam distillation. The Sichuan pepper seed essential oil obtained by this method exhibits excellent antibacterial properties.

This invention discloses the application of garlic essential oil in the preparation of an anti-Trichomonas vaginalis drug for pigeons. The garlic essential oil is prepared by steam distillation, and the drug is in the form of an emulsion for internal use. The invention first uses garlic essential oil in an in vitro inhibition test against Trichomonas vaginalis, determining the minimum inhibitory concentration (MIC) of the garlic essential oil. Trichomonas vaginalis was completely inhibited after 8 hours of treatment with a 50 μL / mL garlic essential oil emulsion. In vivo inhibition tests were also conducted using garlic essential oil. Each infected pigeon was administered 2.5 mL of a 20 μL / mL garlic essential oil emulsion (i.e., 50 μL of garlic essential oil). After 3 days of treatment, the oral trichomoniasis was completely cleared from the pigeons. During the treatment period, the pigeons did not experience any adverse reactions such as vomiting or diarrhea after oral administration. The garlic essential oil of this invention is naturally sourced, green and healthy, non-irritating to pigeons, and falls within the safe range for use, thus having significant application value in the preparation of an anti-Trichomonas vaginalis drug.