34results about How to "Less content loss" patented technology

The present invention provides peppermint composite cellulose fibers, which contain 1-12 wt% of a peppermint extract component and 0.5-3 wt% of peppermint odor essential oil slow-release microcapsules, wherein the dry breaking strength of the fibers is 1.0-3.0 cN / dtex, the wet breaking strength of the fibers is 0.8-1.6 cN / dtex, the dry elongation at break is 16-24%, the residual sulfur content is less than or equal to 18 mg / 100 g, the antibacterial activity logarithm value is more than 2.0, and the bactericidal activity logarithm value is more than 0. The peppermint composite cellulose fiber preparation method comprises: peppermint extract adding liquid preparation, degenerated viscose glue preparing, peppermint blending viscose glue preparing, spinning and post-treating, and filament drafting and post-treating so as to obtain the peppermint composite cellulose fibers. The peppermint composite cellulose fibers of the present invention have characteristics of good wearability, textile processability, antibacterial function, bacterial inhibition function, lasting and fresh peppermint aroma, lasting odor, good textile processing performance, and significant antibacterial function.

The invention discloses a feed for specific pathogen-free (SPF) chicken in the growing period and a preparation method for the feed. The feed is characterized by being prepared from the following raw materials in part by weight: 570 to 590 parts of corn flour, 190 to 210 parts of bean pulp, 150 to 170 parts of wheat bran, 15 to 24 parts of fish meal, 0.5 to 1.5 parts of lysine with the purity of 98 percent, 1 to 2 parts of methionine with the purity of 98 percent, 5 to 15 parts of mountain flour, 10 to 20 parts of calcium hydrophosphate, 2 to 3 parts of table salt and 10 parts of premix. Compared with the traditional sterilization method, the invention has the advantages that: a Co60 radiation source is adopted for sterilization, and a radiation dose rate and radiation time are strictly limited. The feed for the SPF chicken, which is sterilized by the Co60 radiation source, has small loss of nutritional components, is well sterilized and low in cost, and is suitable for industrial production.

The invention provides an antibacterial and deodorization cellulosic fiber which comprises 1-10wt% of aluminosilicate sustained-release microcapsule and 1-5wt% of bamboo charcoal nano powder, wherein the dry breaking strength of the antibacterial and deodorization cellulosic fiber is 1.80-2.60cN / dtex and the wet breaking strength is 0.90-1.50cN / dtex. A preparation method of the antibacterial and deodorization cellulosic fiber comprises preparation of denatured viscose, spinning and after-treatment, wherein the aluminosilicate sustained-release microcapsule is added in the processes of spinning and after-treatment. The antibacterial and deodorization cellulosic fiber has the advantages that the taking performance is excellent, the spinning performance is good and the antibacterial and deodorization functions are prominent; the bamboo charcoal sizing agent is dissolved and then is added into aluminosilicate powder, and then the bamboo charcoal sizing agent and the aluminosilicate powder are uniformly stirred, so that the aluminosilicate powder is prepared into the aluminosilicate sustained-release microcapsule; the aluminosilicate sustained-release microcapsule is added before the spinning by using a pre-spinning injection manner; in the presence of the microcapsule, the active substance decomposition loss and structure damage caused by the direct contact of the strong acid-base and aluminosilicate are prevented; along with the acid bath forming or friction fracture, the active ingredients of the aluminosilicate microcapsule in the textile are slowly released; the nano charcoal powder adsorbs the peculiar smell, so that the long-term antibacterial and deodorization functions are realized.

The invention discloses an extracting and degumming process for a capsicum extract. The process sequentially comprises the processing steps of carrying out solvent extraction, carrying out filtering, carrying out precipitating, carrying out mixed degumming, carrying out centrifugal separation and carrying out multistage concentrating, thereby finally obtaining a capsanthin finished product. The capsanthin prepared by the process is good in fluidity, is not solidified during low-temperature cold storage, is not layered and does not precipitate, the unit color number of the capsanthin finished product is increased by over 8%, the content of centrifugal precipitates is lower than 3.0%, and the content of acetone insolubles is lower than 1.0%. The quality of the product is greatly improved, the yield of the product is high, and the abuse that wasting of pigments is caused during the removal of colloids is avoided.

The invention discloses an efficient process for producing stevioside, and belongs to the technical field of extraction of natural products. The process comprises the following steps of: (1) taking fresh leaves of stevia rebaudiana, grinding the fresh leaves of stevia rebaudiana into paste, and adding water into the paste for extraction to obtain an extract; (2) adding a flocculating agent into the extract, regulating the pH value to be alkaline, performing stirring for flocculation, and conducting filtration to obtain a filtrate; (3) performing adsorption on the filtrate by using macroporousadsorption resin, conducting desorption by using an alcohol solution to obtain a first desorption solution; (4) performing concentration on the first desorption solution, performing desalting and decolorization by enabling the concentrated first desorption solution to pass through cation exchange resin and anion exchange resin, and performing desorption to obtain a second desorption solution; and(5) performing concentration on the second desorption solution, and performing spray drying on the concentrated second desorption solution to obtain the stevioside product. According to the efficientprocess for producing stevioside, since the fresh leaves of stevia rebaudiana are adopted as a raw material, the loss of the content of stevioside during air drying can be reduced, and meanwhile introduction of impurities can be minimized; besides, the obtained product has high content of stevioside, high yield and good quality.

The invention discloses a novel processing method of paeonia sterniana medicinal slices. The method comprises the following steps: (1) impurity removing: sorting the roots of paeonia sterniana and cleaning for later use; (2) pressure-reduced cold soaking and softening: carrying out pressure-reduced cold soaking and softening treatment on the roots of paeonia sterniana; (3) slicing: taking out the roots of paeonia sterniana and cutting into slices with thickness from 1mm to 2mm; (4) drying: drying the slices which are cut well at a temperature of 55 DEG C to 60 DEG C until the content of water in the slices reaches 8% to 12%; (5) packaging: cooling the slices to a room temperature and packaging in a sealing manner. According to the method, the roots of paeonia sterniana are softened via a pressure-reduced cold soaking method, so that the softening efficiency and the softening quality are substantially improved and the production period of the paeonia sterniana medicinal slices is shortened; the softening and soaking processes are both carried out below 30 DEG C, so that the damage to the roots of paeonia sterniana, due to the heating, is avoided, i.e., the loss of paeoniflorin is substantially reduced; any materials are not added during the whole process of the method, so that the medicinal properties of the paeonia sterniana medicinal slices are not changed.

The invention discloses a feed for specific pathogen-free (SPF) chicken in the peak laying period (daily age of 127-420) and a preparation method for the feed. The feed is characterized by being prepared from the following raw materials in part by weight: 620 to 640 parts of corn flour, 190 to 210 parts of bean pulp, 15 to 24 parts of wheat bran, 35 to 45 parts of fish meal, 1 to 2 parts of methionine with the purity of 98 percent, 70 to 90 parts of mountain flour, 10 to 14 parts of calcium hydrophosphate, 2.5 to 3.5 parts of table salt and 10 parts of premix. Different from the traditional sterilization method, the invention has the advantages that: a Co60 radiation source is adopted for sterilization, and a radiation dose rate and radiation time are strictly limited. The feed for the SPF chicken, which is sterilized by the Co60 radiation source, has small loss of nutritional components, is well sterilized and low in cost, and is suitable for industrial production.

The invention belongs to the technical field of traditional Chinese medicine component extraction, and in particular discloses a method for extracting fat oil in croton by using an ionic liquid. The method comprises the following steps: preparing croton, extracting by using an ionic liquid ethanol solution, performing column chromatography isolation, performing vacuum concentration, and drying in vacuum, thereby obtaining fat oil. The method for extracting fat oil in croton by using the ionic liquid is green and environment-friendly, high in oil yield and simple in whole operation process, waste of traditional Chinese medicine resources can be reduced, the prepared croton fat oil can be directly used in medicines without boiling, and good economic and social benefits can be made.

The invention discloses a preparation method for tinidazole sodium chloride injection, and belongs to the technical field of medicines. The method provided by the invention comprises the steps of slowly adding sodium chloride into water for injection for completely dissolving the sodium chloride, adding active carbon, stirring, decarbonizing and filtering with a polypropylene filter element; adding tinidazole into the water for injection and stirring for completely dissolving, passing through a carbon layer, and filtering with the polypropylene filter element; refilling the water for injection until full dose, stirring and reflowing, adjusting a pH value by using a PH regulator, filtering, filling, pressing plug, capping, sterilizing to acquire the injection. According to the method provided by the invention, filtering time of the tinidazole sodium chloride injection can be effectively reduced by changing a decarbonization mode during a preparation process, impurities in material can be better removed, the situation that related substances are generated due to the fact that the tinidazole cannot be completely dissolved or is long in reaction time under a high temperature condition can also be avoided, improved on stability and safety of products is facilitated. The preparation method provided by the invention is simple in technology, and is applicable to large-scale industrial production.

The invention provides a processing method for prepared rehmannia roots. The problem that the medicine effect is affected due to the fact that the prepared rehmannia root processing quality is not stable can be effectively solved. The method comprises the following steps of cleaning, wherein by weight, 100 parts of fresh rehmannia roots with the diameter being 3 cm or larger and 10-30 parts of fresh rehmannia roots with the diameter being 1 cm or smaller are cleaned thoroughly with clean water; drying, wherein the cleaned fresh rehmannia roots with the diameter being 3 cm or larger are placed into a microwave vacuum drying device to be dried; slicing, wherein the dried fresh rehmannia roots are cut into slices with the thickness being 4-6 mm; smashing and juicing, wherein the cleaned fresh rehmannia roots with the diameter being 1 cm or smaller is smashed and juiced, the fresh rehmannia root juice is added into the rehmannia root slices and placed into a steamer to be steamed for 1-2 h; the steamed rehmannia root slices are dried, and the rehmannia roots are ripen. The method is simple and easy to implement, losses of the content of the effective component verbascoside are small, the medicine effect is reserved, the clinic requirement for prepared rehmannia root tablets can be effectively met, and the clinical medicine effect is improved.

This invention relates to a method for producing liquid BaCl2 by using low-grade-toxicity barite powder. Traditional BaCl2 production methods include barite reduction method and HCl leaching method of high-grade-toxicity barite powder. The barite reduction method can obtain high-purity product, yet has such problems as high apparatus cost and heavy environmental pollution. The HCl leaching method of high-grade-toxicity barite powder added with a small amount of low-grade-toxicity barite powder has a high cost. The method in this invention utilizes low-grade-toxicity barite powder (68%) only to produce liquid BaCl2. Besides, the method adds NaOH solution intermittently to adjust the pH value to remove Mg2+, Ca2+ and Sr2+ while minimize Ba2+ loss. The product is qualified.

The invention relates to a feed for SPF (Specific Pathogen Free) growing rabbits from 36 to 70 days old. The feed comprises the following components in parts by weight: 190-210 parts of corn flour, 40-60 parts of bean pulp, 190-210 parts of puffing soybean meal, 210-230 parts of wheat bran, 290-310 parts of alfalfa meal, 0.5-1 part of methionine the content of which is 98%, 2-4 parts of lysine, 6-8 parts of mountain flour for feed, 11-13 parts of calcium hydrophosphate, 2.5-3.5 parts of table salt, and 10 parts of premix. The invention also discloses a preparation method of the feed. The method comprises the following operation steps of: respectively weighting the raw materials; blending the weighted raw materials; uniformly stirring and packaging the raw materials; and sterilizing the packaged raw materials. According to the invention, the feed is scientific and reasonable in formula; the SPF growing rabbits from 36 to 70 days old fed by the feed are high in body meat production rate and high in survival rate; and by adopting Co60 radiation sterilization, the content loss of nutrient substances is small, and the feed is easy to store.

The invention provides an antibacterial and deodorization cellulosic fiber which comprises 1-10wt% of aluminosilicate sustained-release microcapsule and 1-5wt% of bamboo charcoal nano powder, wherein the dry breaking strength of the antibacterial and deodorization cellulosic fiber is 1.80-2.60cN / dtex and the wet breaking strength is 0.90-1.50cN / dtex. A preparation method of the antibacterial and deodorization cellulosic fiber comprises preparation of denatured viscose, spinning and after-treatment, wherein the aluminosilicate sustained-release microcapsule is added in the processes of spinning and after-treatment. The antibacterial and deodorization cellulosic fiber has the advantages that the taking performance is excellent, the spinning performance is good and the antibacterial and deodorization functions are prominent; the bamboo charcoal sizing agent is dissolved and then is added into aluminosilicate powder, and then the bamboo charcoal sizing agent and the aluminosilicate powder are uniformly stirred, so that the aluminosilicate powder is prepared into the aluminosilicate sustained-release microcapsule; the aluminosilicate sustained-release microcapsule is added before the spinning by using a pre-spinning injection manner; in the presence of the microcapsule, the active substance decomposition loss and structure damage caused by the direct contact of the strong acid-base and aluminosilicate are prevented; along with the acid bath forming or friction fracture, the active ingredients of the aluminosilicate microcapsule in the textile are slowly released; the nano charcoal powder adsorbs the peculiar smell, so that the long-term antibacterial and deodorization functions are realized.

The invention discloses a preparation method for inulin, and belongs to the technical field of natural extract extraction and refining. The preparation method comprises six steps of pretreatment, extraction, flocculation, filtration, concentration and separation. According to the method, the equipment utilization rate is increased, activated carbon is added into a crude extract in the flocculationprocess, meanwhile, the impurity removal, decoloration and debitterizing processes of an extract are achieved, the production steps are simplified, the energy consumption is reduced, the step of desalting by using ion exchange resin before chromatographic separation is omitted, and the problem of treatment of resin regenerated sewage is effectively solved.

The invention discloses a processing technology of quick-frozen fresh jujubes. The processing technology comprises the following steps of (1) pretreating raw materials; (2) performing cleaning for the first time; (3) performing cleaning for the second time; (4) performing cleaning for the third time; (5) performing cooking and cooling; (6) performing internal packing; (7) performing quick-freezing on products; (8) performing external packing; and (9) performing inspection and refrigeration. The quick-frozen fresh jujubes maintain the nutrients of fresh jujubes, besides, form sweet and brisk mouth feel of natural mature jujubes, and are healthy and delicious.

The invention relates to a feed for SPF (Specific Pathogen Free) reserved rabbits from 71 days old to adult. The feed comprises the following components in parts by weight: 190-210 parts of corn flour, 160-180 parts of bean pulp, 240-260 parts of bran cake, 540-560 parts of alfalfa meal, 0.5-1 part of methionine the content of which is 98%, 2-4 parts of lysine, 6-8 parts of mountain flour for feed, 11-13 parts of calcium hydrophosphate, 2.5-3.5 parts of table salt, and 10 parts of premix. The invention also discloses a preparation method of the feed. The method comprises the following operation steps of; respectively weighting the raw materials; blending the weighted raw materials; uniformly stirring and packaging the raw materials; and sterilizing the packaged raw materials. According to the invention, the feed is scientific and reasonable in formula; the SPF reserved rabbits from 71 days old to adult fed by the feed are high in weight increase and high in survival rate; and by adopting Co60 radiation sterilization, the content loss of nutrient substances is small, and the feed is easy to store.

The invention discloses a processing and preparation technology of rhizoma chuanxiong. The processing and preparation technology comprises the following steps: a step of coarse screening, a step of washing and moisturizing, a step of cutting, a step of drying and a step of fine screening. The rhizoma chuanxiong adopts a fresh-cut processing method, a drying process of materials in harvesting is reduced, secondary drying is avoided, fresh rhizoma chuanxiong can be directly processed, material softening treatment is not required to be carried out, and just sediment needs to be cleaned; the method has the advantages that the content loss during harvesting and processing is reduced, the content loss is less, and higher content of produced materials is ensured; on the other hand, the processingand preparation technology is capable of increasing the production efficiency and shortening the production period.

The invention relates to the technical field of fine chemicals, in particular to a method for producing liquid barium chloride with low-grade witherite ore powder. There are two production methods of barium chloride, one is the barite reduction method, and the other is the high-grade witherite mineral powder hydrochloric acid method. The barite reduction vulcanization process has high product purity, but the equipment investment is large and the environmental pollution is serious. Another method is to use high-grade witherite ore powder or add a small amount of low-grade witherite ore powder to produce barium chloride solution by leaching with hydrochloric acid, but the production cost of this method is relatively high. And fully produce barium chloride solution with low-grade witherite ore powder (content is about 68%), there is no report yet. The present invention completely uses low-grade witherite mineral powder (content is about 68%) to produce barium chloride solution, adopts the method for adjusting pH value by adding sodium hydroxide solution intermittently in multiple stages, removes Mg2+, Ca2+, Sr2+ respectively, and Ba2+ content loss Reduced to a minimum, the product meets quality standards.

The invention provides a method for wall breaking treatment of a papaya cell wall skeleton structure. The method comprises the following implementation steps of (1) cleaning the surface of papaya, removing seeds, conducting slicing, conducting color protecting, blanching for enzyme deactivation, dipping in seasoning liquid, and freezing at the temperature of -25 DEG C to -5 DEG C or conducting fresh-maintaining treatment at the temperature of 5 DEG C to 10 DEG C; (2) putting frozen pawpaw slices or pawpaw slices subjected to fresh-maintaining treatment into a vacuum low-temperature food conditioning device for wall breaking treatment, keeping the pressure in the device at -0.090 MPa to 0.095 MPa, keeping the treatment time to be 30 min to 120 min and the treatment temperature to be 80 DEG C to 120 DEG C, and taking triglyceride as a solvent medium; and (3) removing the solvent medium from the papaya subjected to wall breaking treatment, packaging and storing, so that the content loss of lignin and procyanidine in the finally obtained papaya slices subjected to wall breaking treatment is less, but the molecular weight is obviously reduced, and the bioavailability of the components in the papaya is improved. The method is easy and convenient to operate, the loss of nutritional ingredients of the treated papaya is less, the bioavailability is improved, and a new way is provided for deep processing and utilization of the papaya.

The invention discloses a feed used in the laying preparation period of SPF (specific pathogen free) breeding hens and a preparation method thereof. The feed is characterized by comprising the following raw materials in parts by weight: 620-660 parts of corn meal, 220-230 parts of bean pulp, 35-45 parts of wheat bran, 15-24 parts of fish meal, 0.5-1.5 parts of 98% of lysine, 1-2 parts of 98% of methionine, 40-50 parts of limestone meal, 10-20 parts of calcium hydrophosphate, 2-3 parts of salt and 10 parts of premix. Compared with the traditional sterilization method, the preparation method ischaracterized by adopting a Co60 ray source for radiation sterilization and strictly limiting the radiation dose rate and radiation time. The feed subjected to radiation sterilization of the Co60 raysource has low nutrient losses, good sterilization effect and low cost and is suitable for industrial production.

The invention discloses an extraction and degumming process of capsicum extract, which sequentially includes solvent extraction, filtration, precipitation, mixing degumming, centrifugal separation and multi-stage concentration process steps, and finally obtains red capsicum finished product; the obtained red capsicum has good fluidity , No solidification, no stratification, no precipitation in low-temperature refrigeration, the unit color price of red capsicum finished product is increased by more than 8%, the centrifugal sediment is less than 3.0%, and the acetone insoluble matter is less than 1.0%. The quality of the product is greatly improved and the yield of the product is high, and the disadvantage of wasting pigment caused by colloidal substances in the removal process is avoided.

The invention discloses a deep processing method of a lutein extract. The method comprises the following steps: taking a light-alcohol solvent as an extracting agent for the lutein extract, and performing extracting, saponification by adding an alkaline liquor, crystallization and filtering on the lutein extract to obtain a filter cake and a soap-containing filtrate; performing water washing and drying on the filter cake to obtain high-purity lutein crystals; desolventizing the soap-containing filtrate and then mixing the desolventized soap-containing filtrate with dichloromethane, and separating the mixture to obtain a water phase and a solvent phase; concentrating the water phase to obtain fatty acid soap; washing the solvent phase with water and then adding Vc to the solvent phase and stirring evenly, and concentrating to obtain low-content lutein crystals. The deep processing method of the lutein extract is used for further purifying the deep processing method of a lutein extract; the low-content lutein crystals are collected, the total content yield of the crystals can be increased to 97% or higher, and the by-product fatty acid soap can be obtained; as Vc is added to the soap-containing filtrate, the content losses in the concentration and flavor removal process can be reduced and the single-step yield of the crystals produced from the soap-containing filtrate is above 17%. The deep processing method of the lutein extract is simple to operate, the yield of the product is high and the by-product can be reutilized; as a result, the deep processing method is suitable for industrial production.

The invention discloses a feed used in the brooding period of SPF (specific pathogen free) breeding hens and a preparation method thereof. The feed is characterized by comprising the following raw materials in parts by weight: 590-610 parts of corn meal, 280-320 parts of bean pulp, 25-35 parts of wheat bran, 25-35 parts of fish meal, 0.5-1.5 parts of 98% of lysine, 1-2 parts of 98% of methionine,5-15 parts of limestone meal, 10-20 parts of calcium hydrophosphate, 2-3 parts of salt and 10 parts of premix. Compared with the traditional sterilization method, the preparation method is characterized by adopting a Co60 ray source for radiation sterilization and strictly limiting the radiation dose rate and radiation time. The feed subjected to radiation sterilization of the Co60 ray source haslow nutrient losses, good sterilization effect and low cost and is suitable for industrial production.

The invention discloses a feed for specific pathogen-free (SPF) chicken in the peak laying period (daily age of 127-420) and a preparation method for the feed. The feed is characterized by being prepared from the following raw materials in part by weight: 620 to 640 parts of corn flour, 190 to 210 parts of bean pulp, 15 to 24 parts of wheat bran, 35 to 45 parts of fish meal, 1 to 2 parts of methionine with the purity of 98 percent, 70 to 90 parts of mountain flour, 10 to 14 parts of calcium hydrophosphate, 2.5 to 3.5 parts of table salt and 10 parts of premix. Different from the traditional sterilization method, the invention has the advantages that: a Co60 radiation source is adopted for sterilization, and a radiation dose rate and radiation time are strictly limited. The feed for the SPF chicken, which is sterilized by the Co60 radiation source, has small loss of nutritional components, is well sterilized and low in cost, and is suitable for industrial production.

The invention discloses a concentration desolvation method and apparatus of lycopene extraction mixed oil. The method comprises performing evaporation with a tube evaporator and performing secondary evaporation crystallization with a flashing case. The method is characterized in that in the tube evaporator, a first group of tubes are used for evaporation, uniform mixing is carried out, and a second group of tubes are used for evaporation, wherein the flow rate of mixed oil in the second group of tubes is larger than that in first group of tubes, and the tube evaporator allows the solvent content to be reduced from 90-99% to 70-72%, and finally a flashing case is used for secondary evaporation crystallization. The method and apparatus allow a solvent in lycopene extraction mixed oil to be efficiently continuously evaporated.

The present invention provides peppermint composite cellulose fibers, which contain 1-12 wt% of a peppermint extract component and 0.5-3 wt% of peppermint odor essential oil slow-release microcapsules, wherein the dry breaking strength of the fibers is 1.0-3.0 cN / dtex, the wet breaking strength of the fibers is 0.8-1.6 cN / dtex, the dry elongation at break is 16-24%, the residual sulfur content is less than or equal to 18 mg / 100 g, the antibacterial activity logarithm value is more than 2.0, and the bactericidal activity logarithm value is more than 0. The peppermint composite cellulose fiber preparation method comprises: peppermint extract adding liquid preparation, degenerated viscose glue preparing, peppermint blending viscose glue preparing, spinning and post-treating, and filament drafting and post-treating so as to obtain the peppermint composite cellulose fibers. The peppermint composite cellulose fibers of the present invention have characteristics of good wearability, textile processability, antibacterial function, bacterial inhibition function, lasting and fresh peppermint aroma, lasting odor, good textile processing performance, and significant antibacterial function.

The invention relates to a method for detecting the content of pseudo-ginseng in pseudo-ginseng contusion and rheumatism ointment. The method comprises the steps of: preparation of a reference substance solution; preparation of a test solution: taking the pseudo-ginseng contusion and rheumatism ointment, and adding water and dichloromethane for extraction; stewing the extracting solution obtainedin the previous step, separating a water taking layer, and adding petroleum ether for extraction; stewing the extracting solution obtained in the previous step, separating the water taking layer, andadding n-butyl alcohol for extraction; washing the extract liquor obtained in the previous step by using an ammonia test solution to obtain a n-butyl alcohol solution; evaporating the n-butyl alcoholsolution obtained in the previous step to dryness to obtain residues, dissolving the residues in methanol to prepare the test solution; and chromatographic detection. According to the method providedby the invention, a suitable test product preparation process is adopted to extract notoginsenoside R1 from the pseudo-ginseng contusion and rheumatism ointment for liquid chromatographic analysis, formula matrix residue in the test solution is few, the loss of the notoginsenoside R1 is little, the interference elements are few, and an accurate content value can be obtained at proper washing gradient. Furthermore, the content of pseudo-ginseng is characterized by the notoginsenoside R1, so that the specificity is high, the method is not interfered by the chemical components of other medicinalmaterials, and the repeat stability is good.