Method of rapidly preparing high-purity naringin from fresh pomelo young fruit

Abstract

The invention discloses a method of rapidly preparing high-purity naringin from fresh pomelo young fruit. The method is characterized by comprising the following steps of: step (1) collecting young fruit; step (2) grinding; step (3) extracting; step (4) filtering; step (5) removing impurities by using a ceramic membrane system; (6) adding acid for crystallization; and step (7) filtering and drying. The method of preparing the naringin from the fresh pomelo young fruit is fast, efficient, low in cost, simple in process, convenient in operation, environmentally-friendly and efficient.

Description

technical field [0001] The invention relates to a method for rapidly preparing high-purity naringin from fresh pomelo young fruit. Background technique [0002] Naringin, also known as naringin, citrusin or isohesperidin, belongs to the dihydroflavonoid structure, there is no conjugation between the A ring and the B ring, the solubility in water is 0.1%, and it is easily soluble in methanol, ethanol, formamide and Dimethylformamide and other polar solvents are easily soluble in hot water and dilute alkaline solutions. Naringin, bitter in taste, has various biological activities such as anti-inflammation, anti-virus, and anti-cancer. It is widely used in the food and pharmaceutical industries. main ingreadient. [0003] In nature, naringin is mainly found in the fruit of pomelo, a Rutaceae plant, including the pomelo peel and its young fruit. Among them, the content in the young fruit can be as high as 35.29%, because under the influence of natural and physiological conditi...

AI Technical Summary

Problems solved by technology

[0004] (1) The raw materials are dry raw materials. Young pomelo fruits need to be sun-dried or heated and dried. Browning caused by rot will occur during the drying process. Recrystallization treatment reduces the yield of naringin

[0005] (2) When extracting, heat source heating is required, the risk factor is higher, energy consumption is higher, and production cost is higher. In addition, the crushed particles are larger, which will reduce the extraction rate of naringin

[0006] (3) When extracting, if extract with ethanol, the loss of ethanol is serious in the concentration process, and the cost is higher, and because hot ethanol is super soluble, more impurities in the raw material can be dissolved out, making the preparation of 98% naringin The process route is extended. If the hydrothermal extraction is used, the wastewater discharge will be large. Due to the dissolution of a large amount of pectin and protein in the raw materials, it will be difficult to crystallize naringin. It often takes as long as 3 to 5 days. Only naringin can be crystallized from the extraction solution more thoroughly, the production cycle of naringin is long, and the extraction effect and yield are low

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