Supercritical-CO2 technology for extracting essential oil from leaves of alpinia zerumbet

A Mosaic Ginger, supercritical technology, applied in the directions of essential oils/spices, fat generation, etc., can solve the problems of reducing the quality of extracted essential oils, solvent residues, destruction of heat-sensitive components of essential oils, etc., and achieves cheap sources, complete extraction, and extraction time. short effect

Inactive Publication Date: 2015-09-02
FUJIAN AGRI & FORESTRY UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the high extraction temperature of the steam distillation method, the heat-sensitive components in the essential oil will be destroyed, and the organic solvent extraction of the essential oil also has the problem of solvent residue, which will reduce the quality of the extracted essential oil

Method used

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  • Supercritical-CO2 technology for extracting essential oil from leaves of alpinia zerumbet
  • Supercritical-CO2 technology for extracting essential oil from leaves of alpinia zerumbet

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Embodiment Construction

[0011] The present invention adopts supercritical-CO 2 The essential oil of Alpinia fragrans leaves is extracted. The present invention adopts the following scheme: take 30g of Alpinia alpinia fronds dry powder in the extraction kettle, and when the extraction temperature, pressure, and flow rate reach the required conditions, start timing, and collect the product after the extraction is completed. , Accurately weigh and calculate the yield.

[0012] Essential oil yield =

[0013] The extraction temperature is 27.5 ~ 32.5 ° C, the extraction pressure is 10.0 ~ 20.0Mpa, CO 2 The flow rate is 30.0 ~ 15.0 L h -1 , the extraction time is 1-2 h.

[0014] Table 1 The experimental factor level table for extracting the essential oil of Alpinia japonica leaves

[0015]

[0016] Table 2 Orthogonal test table and results

[0017]

[0018] As a preferred solution, the process parameters of the present invention: extraction time 2 h, extraction pressure 20 MPa, extraction temp...

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Abstract

The invention provides a supercritical-CO2 technology for extracting essential oil from leaves of alpinia zerumbet. The technology comprises the following steps: putting dry powder of leaves of alpinia zerumbet into an extraction kettle, wherein the extraction temperature is 27.5-32.5 DEG C, the extraction pressure is 10.0-20.0MPa; the CO2 flow is 30.0-15.0L.h<-1>; and the extraction time is 1-2 hours; after extraction is ended, collecting a product; accurately weighing and calculating the yield. The supercritical-CO2 technology is short in extraction time, high in efficiency and low in temperature; the damages to heat-sensitive components can be avoided; hydrolysis of the compound is avoided; extraction on active components is relatively safe; with CO2 as an extraction solvent, the essential oil is nontoxic, free of pollution, abundant and cheap in source, and easy to diffuse from an extract, so that the problem of a solvent residue is avoided.

Description

technical field [0001] The invention belongs to the field of natural product processing, and more specifically relates to a process for extracting the essential oil of Alpinia japonica leaves. Background technique [0002] Alpinia mosaic is a plant of the genus Alpinia officinalis in the ginger family, also known as Alpinia mosaicus, Alpinia variegata, Alpinia japonica, etc. It is a good ornamental and aromatic plant with beautiful plant shape, bright leaf color and special aroma, peculiar flower shape and strong aroma. The leaves of Alpinia mosaicus have antioxidant and antibacterial activities, and have a unique aroma, and are adaptable and rich in resources, so they can be used as the preferred material for extracting plant essential oils. [0003] The essential oil of Alpinia mosaic leaves contains a large amount of active substances, which has certain development and utilization value. At present, the commonly used extraction methods for essential oils include steam d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B9/02
Inventor 吴少华李永裕陈建烟叶征美李欣欣曹莉莉
Owner FUJIAN AGRI & FORESTRY UNIV
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