Method for extracting piperis longi volatile oil

An extraction method and technology of volatile oil, applied in the field of natural product active ingredient extraction, to achieve the effect of increasing extraction rate, shortening extraction time, and simplifying operation steps

Inactive Publication Date: 2014-11-26
NANJING ZELANG AGRI DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After searching the literature, there is no report about the extraction of the volatile oil of Piper longum by this method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Dry and pulverize the longan medicinal material, pass through a 60-mesh sieve, add 6 times of 60% ethanol solution, and use dual-frequency ultrasonic for extraction. Continuously extract at ℃ for 60 minutes, filter, concentrate the filtrate in a rotary evaporator until it has no alcohol smell, extract 3 times with petroleum ether, combine the extracts, dry and dehydrate with anhydrous sodium sulfate, and concentrate under reduced pressure to obtain viscous orange-yellow longan The yield of volatile oil is 4.24%.

Embodiment 2

[0017] Dry and pulverize the longan medicinal material, pass through a 60-mesh sieve, add 7 times of 65% ethanol solution, and use dual-frequency ultrasonic for extraction. Continuously extract at ℃ for 70 minutes, filter, concentrate the filtrate in a rotary evaporator until it has no alcohol smell, extract it three times with ether, combine the extracts, dry and dehydrate with anhydrous sodium sulfate, and concentrate under reduced pressure to obtain viscous orange-yellow volatile oil of Piper longum , the yield was 5.01%.

Embodiment 3

[0019] Dry and pulverize the longan medicinal material, pass through a 60-mesh sieve, add 8 times of 70% ethanol solution, and use dual-frequency ultrasonic for extraction. Continuously extract at ℃ for 90 minutes, filter, concentrate the filtrate in a rotary evaporator until it has no alcohol smell, extract twice with petroleum ether, combine the extracts, dry and dehydrate with anhydrous sodium sulfate, and concentrate under reduced pressure to obtain a transparent oily green perennial volatile oil. The yield was 2.21%.

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Abstract

The invention discloses a method for extracting piperis longi volatile oil and particularly relates to a method for extracting piperis longi volatile oil by employing double-frequency ultrasonic wave. The method comprises the following processing steps: (1) pretreatment of piperis longi medicinal material; (2) double-frequency ultrasonic wave extraction; and (3) extraction by using an organic solvent, drying and dewatering anhydrous sodium sulfate, and carrying out vacuum concentration so as to obtain the piperis longi volatile oil. The piperis longi volatile oil is extracted by adopting the double-frequency ultrasonic wave, the method is simple in process, short in extraction time and low in energy consumption, the yield of volatile oil is significantly higher than that of the traditional extraction method, and the method is suitable for industrial production.

Description

technical field [0001] The invention relates to a method for extracting the volatile oil of Piper longum, in particular to a method for extracting the volatile oil of Piper longum by using a dual-frequency ultrasonic wave, and belongs to the technical field of extracting effective components of natural products. Background technique [0002] Piper longum, also known as Bibo, Piper pear, Ali Hetuo, etc., is a perennial herbaceous vine of the dried near-ripe or mature fruit ears of Piper longum. Its fruit ears are used as medicine, pungent and hot. Return stomach, large intestine channel. It has the effects of warming the middle and dispelling cold, lowering Qi and relieving pain, and is mostly used to treat cold pain in the abdomen, vomiting, diarrhea, and migraine; externally treat toothache. Volatile oil is one of the main active components of Piper longum, the main components of which are β-celerene, β-piperene, α-gingerene, pentadecane, α-humulene, 1-heptadecene, Hepta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B9/02C11B1/10
Inventor 苏刘花杨存
Owner NANJING ZELANG AGRI DEV
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