42 results about "Alpha mangostin" patented technology

The invention relates to a method for extracting alpha-mangostin from a mangosteen fruit peel. The method comprises the following realization steps: (I) extracting the mangosteen fruit peel; (II) concentrating an extracting solution; mixing the extracting solution of every time and concentrating under reduced pressure to obtain a concentrated solution; (III) leaching the solution; (IV) carrying out silica gel column chromatography; (V) carrying out coarse crystallization; and (VI) carrying out recrystallization: adding a primary crystal into an organic solvent with the volume of 1 to 5 times to carry out thermal dissolution; placing the solution after finishing the thermal dissolution, reducing the temperature to a room temperature, carrying out recrystallization, and controlling the crystallization time to between 10 and 20 hours; and filtering and centrifugating a recrystallization liquid, drying the liquid in vacuum to obtain the 98 percent alpha-mangostin. The method has the advantages of simple process and short operation time.

The invention relates to a mangosteen extract with alpha-mangostin, beta-mangostin and gamma-mangostin and a processing technique thereof, comprising the following steps: smashing, multi-level extracting, vacuum concentration, drying, etc. In the invention, ethanol is taken as extracting medium, the active ingredients of a whole mangosteen are extracted by a method of multi-level extracting and ethanol recovering, the produced mangosteen extract is powder, and the contents of alpha-mangostin, beta-mangostin and gamma-mangostin can be more than 14% and taken as food adhesives and accessories. The technique is characterized by simple technique, low cost and high content of mangostin in the extract.

The invention discloses a method for extracting alpha-mangostin from garcinia mangostana peel. The method includes the following steps that 1) the garcinia mangostana peel is crushed, reflux extraction is conducted once or twice with water of 8-10 times of weight, then reflux extraction is conducted for one to three times with a 90%-95% ethanol solution of 8-10 times of weight, an extracting solution of the ethanol solution is combined, the extracting solution is concentrated to be twice or three times of the weight of the garcinia mangostana peel, centrifuging is carried out, and after centrifugal residues are dried, a crude extract is obtained; 2) subcritical extraction is conducted by using the fluid which is formed by dimethyl ether and butane according to the weight ratio of 60-70 : 30-40 as an extraction agent, the extraction temperature is 68-72 DEG C, the extraction pressure is 2.8-3.2MPa, and the extraction time is 20-40min. According to the method for extracting the alpha-mangostin from the garcinia mangostana peel, water extraction and alcohol extraction are used for obtaining the crude extract first in the extracting process, the content of the alpha-mangostin of the crude extract is 70%-80%, then subcritical extraction is conducted, and the content of the alpha-mangostin is further made to reach 98%. The method is short in time, small in dosage of reagents, simple in step and high in yield and content, a subcritical extraction agent is volatilized directly to obtain a product, and thus the method is more suitable for industrial production.

The invention relates to a process for obtaining and purifying pure α-mangostin from the rind of the fruit (mangosteen) of Garcinia mangostana.

The invention discloses a method for extracting high-content alpha-mangostin from mangosteen skin. The method comprises the following steps: (1) extracting: crushing mangosteen skin raw materials, placing the crushed mangosteen skin raw materials into an extracting device, adding an acid alcohol solvent in amount which is 4 to 5 times the weight of the mangosteen skin raw materials, placing the solution into water bath at the temperature of 85-95 DEG C, extracting for 2 to 3 times and for 1.5 to 2 hours at each time, combining the extracting liquids and filtering to obtain the filtered extracting liquid; and (2) performing chromatography: allowing the filtered liquid to pass through a neutral alumina chromatographic column, performing gradient elution, collecting the eluent, concentrating the eluent under reduced pressure until no alcohol taste exists, standing the eluent at the temperature of 4 DEG C for more than or equal to 4 hours until crystallization, centrifuging, and taking the precipitate to obtain the finished product. The method has the advantages of few steps, low time consumption, little reagent dosage and low cost, and is simple to operate and easy to control. By the method, the alpha-mangostin with the highest content of more than or equal to 99.0% can be obtained. The method is suitable for industrialized production.