10 results about "Vitexin" patented technology

The invention provides a functional feed additive for relieving oxidative damage to intestinal tracts of piglets as well as a preparation method and application of the functional feed additive. The functional feed additive is prepared from the following components in parts by weight: 30 to 50 parts of plant extract, 0.5 to 2 parts of operculate cleistocalyx flower polyphenol-mesoporous silicon dioxide nanoparticles, 0.05 to 1 part of vitexin and 1 to 3 parts of sugarcane polyphenol. The product provided by the invention can relieve intestinal structure damage caused by oxidative stress of piglets and protect normal structures and functions of intestinal tracts; inflammatory factors are reduced, inflammatory response is improved, and intestinal health is maintained; the piglet diarrhea is reduced, and the production performance of piglets is improved.

The invention discloses an application of hawthorn glycosyl transferase and related biological materials in biosynthesis of rhamnoside vitexin. The invention firstly discloses any one of the following proteins: A1) a protein consisting of an amino acid sequence as shown in a sequence 2; a2) a fusion protein obtained by connecting the N end or / and C end of the protein as shown in the sequence 2 with a protein tag. The invention further discloses the protein related biological material and application thereof. The key glycosyl transferase gene CpCGT for biosynthesis of rhamnovitexin is obtained from hawthorn for the first time, and it is proved that the protein CpCGT coded by the key glycosyl transferase gene CpCGT can catalyze 2-hydroxynaringenin to form a precursor compound 2-hydroxynaringenin-C-glucoside of rhamnovitexin. And the method has important significance on biosynthesis and heterologous production of rhamnoside vitexin.

This invention discloses the application of vitexin and its composition in products, wherein the vitexin and its composition can be used in the preparation of products with oil-controlling effects; the amount of vitexin added to the product is 1-10 μg / mL; the vitexin composition comprises vitexin and resveratrol, with a mass ratio of vitexin to resveratrol of 1:9-9:1; the amount of vitexin composition added to the product is 10 μg / mL. This invention has the advantage of being applicable to the preparation of products with oil-controlling effects.

The invention discloses a pesticide composition as well as a preparation method and application thereof, and relates to the technical field of nano pesticides. According to the invention, vitexin and gentiopicroside are used as synergists, and vitexin and gentiopicroside and a chlorantraniliprole-clothianidin compound are used as raw materials to prepare the pesticide composition. Through combination of the chemical pesticide preparation and the plant source synergist, synergistic interaction of multiple action targets and multiple action modes is achieved, efficient prevention and control of peanut underground pests are achieved, and meanwhile the drug resistance risk generated by using a single agent can be avoided. According to the pesticide composition with the microcapsule structure prepared by the invention, the stability of effective components can be improved; the slow release of the effective components can also be realized. In addition, vitexin and gentiopicroside are compounded to serve as the synergist, and the composition has a combined synergistic effect on improvement of prevention and control of underground pests.

The invention relates to the technical field of traditional Chinese medicine detection, in particular to a method for identifying species of fructus viticis and application of the method. When 1.5, the fructus viticis is single-leaf fructus viticis; when the ratio is gt; when 2.0, the fructus viticis is the three-leaf fructus viticis; when the ratio is between 1.5 and 2.0, it is determined that the sample is mixed or abnormal, the content determination method of the isoorientin and vitexin in the indexes is provided in detail, the precision, the stability and the repeatability of the method are good, and the average sample adding recovery rate is 80%-120%; through chemical verification, the identification accuracy reaches 100%, and the index has extremely high specificity on single-leaf fructus viticis; the ratio intervals of the pure single-leaf and three-leaf chastetree fruits are not overlapped, the critical value is clear, and cross misjudgment is avoided, so that the distinguishing degree of the identification index is extremely high, the ratio calculation result is stable, abnormal discrete data is avoided, and the objectivity and reliability of a verification conclusion are ensured.

The invention discloses a preparation process of a heart-'an capsule and a fingerprint spectrum of the heart-'an capsule, and relates to the technical field of traditional Chinese medicine preparation processes, the preparation process of the heart-'an capsule comprises extraction and preparation, the extraction comprises the following steps: a, extraction and concentration; b, drying; c, crushing; d, total mixing; e, bagging the totally mixed hawthorn leaf extract, and sealing for later use; the preparation method comprises the following steps: S1, preparing materials; s2, performing granulation; s3, drying; s4, granulating; s5, total mixing; s6, filling is carried out; s7, inner packaging; and S8, outer packaging, wherein specification packaging, boxing, boxing, packaging and warehousing are conducted. According to the invention, the hawthorn leaf coarse powder is subjected to reflux extraction through 50% ethanol, and is prepared into granules for filling the capsules, so that the production process is stable, and the contents of rhamnoside vitexin, glucoside vitexin, vitexin, rutin, hyperoside and chlorogenic acid in each batch of produced heart-'an capsules are stable, therefore, the heart-'an capsules produced by the production process are stable in quality, and the quality of the heart-'an capsules is greatly improved. The medicine effect of the product can be ensured, and the product quality is improved.

The present application relates to the technical field of honey detection, and particularly relates to a vitexin, a preparation method thereof and a method for identifying vitex honey. The vitexin has a structure shown in formula 1: The present application finds a new compound, vitexin, in vitex honey through research on the vitex honey. The present application also finds that when the to-be-tested honey contains vitexin (p-hydroxybenzoic acid 1-O-gentio-bioside-5-hydroxy-3,7-diene-[2,6] cyclopentanopyranyl-3-methyl ester), or contains vitexin and new chlorogenic acid, 4-hydroxybenzoic acid, chlorogenic acid, caffeic acid, p-coumaric acid, red flower phaseolus acid, trans, trans-epiabscisic acid, cis, trans-epiabscisic acid, 5-methoxy pinocembrin, pinocembrin, kaempferol, pinocembrin, benzyl caffeate, kojic acid, galangin at the same time, the to-be-tested honey can be determined as vitex honey. The present application also provides a new method for constructing a vitex honey authenticity and quality evaluation system.

The invention discloses an HPLC characteristic chromatogram construction method of a pigeon pea leaf medicinal material, a concentrated solution, extract powder and a finished product, and belongs to the technical field of analysis and detection. The method specifically comprises the following steps: (1) preparing a reference substance solution; (2) preparing a test solution; (3) chromatographic conditions; and (4) determination. According to the method, a high performance liquid chromatography method is adopted, methanol-0. 1% formic acid is selected as a mobile phase for gradient elution, orientin, vitexin, pinocembrin monomethyl ether, pinocembrin, pigeon pea stilbene A and pigeon pea stilbene acid are used as reference substances, and the HPLC characteristic chromatograms of pigeon pea leaf medicinal materials, concentrated liquor, extract powder and finished products (the capsules for dredging collaterals and growing bones) are established. The method is good in precision, repeatability, stability and durability, the operability is high, analysis is convenient, stable and reliable, and the obtained high performance liquid fingerprint spectrum can effectively control the quality of pigeon pea leaf medicinal materials, concentrated solutions, extract powder and finished products.

The present application relates to the field of traditional Chinese medicine detection, in particular to a characteristic spectrum detection method and quality control method of a drug preparation of winter melon peel. The detection method (1) provided by the present application can select S-peak vitexin-2"-O-rhamnose glycoside as the internal reference peak in the fingerprint spectrum, and can determine five common characteristic peaks of the winter melon peel formula granules, and calculate the relative retention time of each common characteristic peak according to S-peak vitexin-2"-O-rhamnose glycoside. The detection method (2) selects S-peak uridine as the internal reference peak in the fingerprint spectrum, and can determine six common characteristic peaks of the winter melon peel formula granules, and calculates the relative retention time of each common characteristic peak according to S-peak uridine. The detection method (1) and / or the detection method (2) are beneficial to the comprehensive quality detection and overall quality control of the winter melon peel drug preparation, thereby helping to improve the safety and stability uniformity of the drug use.

The invention relates to a method for preparing vitexin through solid-state fermentation of hawthorn leaves, and the method comprises the following steps: 1) activating bacillus pumilus by using a composite inducer to obtain an activated bacterial liquid; 2) taking hawthorn leaves as a raw material, and adding a composite inducer to prepare a solid-state fermentation culture medium; (3) inoculating the activated bacterial liquid into a solid-state fermentation culture medium, uniformly mixing, and performing fermentation treatment to obtain a fermentation product after fermentation is completed; according to the method, the compound inducer is used in multiple steps, the vitexin extraction technological process is simplified, the yield and the purity are improved, the preparation process is environmentally friendly, and the resource utilization rate is high.