CN104479880A - Method for extracting tangerine peel essential oil - Google Patents

Abstract

The invention relates to the field of essential oil extraction, and particularly relates to a method for extracting tangerine peel essential oil. The method comprises the following steps: drying fresh tangerine peels in vacuum, and grinding to obtain tangerine peel powder; spraying a small amount of ethanol on the tangerine peel powder, and putting the tangerine peel powder having ethanol in an extraction kettle, introducing carbon dioxide, and extracting; carrying out primary separation and secondary separation on supercritical carbon dioxide in which extract is dissolved to obtain tangerine peel essential oil; filtering the tangerine peel extract with qualitative filter paper and an organic microfiltration membrane sequentially, then heating in a water bath, and separating by virtue of a centrifugal machine to obtain the tangerine peel essential oil. The method is simple and reasonable, and the product has high extraction rate and high purity, usage of massive organic solvent is avoided, the tangerine peel essential oil is non-toxic and purely natural, and has high quality, rich fragrance, comprehensive effective ingredients and high edible and medicinal values.

Description

A kind of method extracting orange peel essential oil

Technical field

The present invention relates to extraction of essential oil field, particularly relate to a kind of method extracting orange peel essential oil.

Background technology

Orange peel, as the term suggests, just refer to from orange and peel the pericarp come.Rich vitamin C in orange peel, have medicinal, improve looks, cook the effects such as delicious food.The orange peel derived essential oil that existing extracting method obtains is not comprehensive, and the effective constituent of some orange peel could not extract, and the taste of orange peel is lacked to some extent, reduces edible and pharmaceutical use.

Summary of the invention

The object of the present invention is to provide a kind of method extracting orange peel essential oil, to solve the defect that prior art exists.

In order to realize above-mentioned object, adopt following technical scheme.Extract a method for orange peel essential oil, comprise the following steps:

Step one, fresh orange peel is carried out vacuum-drying 1h-1.5h at 45 DEG C-55 DEG C, be then crushed to 60-100 order, make orange peel powder;

Step 2, on orange peel powder, spray a small amount of ethanol, be then placed in extraction kettle, put into carbonic acid gas, at pressure 20MPa-40MPa, extract 1h-3h at temperature 40 DEG C-60 DEG C, the flow of CO 2 fluid is 20L/h-30L/h;

Step 3, be dissolved with the supercritical carbon dioxide fluid of extract through flash trapping stage and the second-order separation, flash trapping stage pressure is 6MPa-10MPa, and temperature is 50 DEG C-60 DEG C, and the second-order separation pressure is 5MPa-7MPa, temperature is 30 DEG C-55 DEG C, obtains orange peel essential oil;

Step 4, orange peel extracting solution first to be filtered with qualitative filter paper, then use organic filtering with microporous membrane, then at 40 DEG C-50 DEG C heating in water bath 30min, be separated through whizzer 5000-10000r/min, obtain orange peel essential oil.

Compared with prior art, present invention process advantages of simple, product extraction yield is high, and purity is high, avoids using a large amount of organic solvent, nontoxic, pure natural, the orange peel essential oil quality better obtained, aromatic flavour, and effective constituent is comprehensive, and edible pharmaceutical use is high.

Embodiment

Below in conjunction with embodiment, the invention will be further described.

Technical process of the present invention comprises the following steps:

Step one, fresh orange peel is carried out vacuum-drying 1h-1.5h at 45 DEG C-55 DEG C, be then crushed to 60-100 order, make orange peel powder;

Step 2, on orange peel powder, spray a small amount of ethanol, be then placed in extraction kettle, put into carbonic acid gas, at pressure 20MPa-40MPa, extract 1h-3h at temperature 40 DEG C-60 DEG C, the flow of CO 2 fluid is 20L/h-30L/h;

Step 3, be dissolved with the supercritical carbon dioxide fluid of extract through flash trapping stage and the second-order separation, flash trapping stage pressure is 6MPa-10MPa, and temperature is 50 DEG C-60 DEG C, and the second-order separation pressure is 5MPa-7MPa, temperature is 30 DEG C-55 DEG C, obtains orange peel essential oil;

Step 4, orange peel extracting solution first to be filtered with qualitative filter paper, then use organic filtering with microporous membrane, then at 40 DEG C-50 DEG C heating in water bath 30min, be separated through whizzer 5000-10000r/min, obtain orange peel essential oil.

Embodiment one

Step one, fresh orange peel is carried out vacuum-drying 1.5h at 45 DEG C, be then crushed to 60 orders, make orange peel powder;

Step 2, on orange peel powder, spray a small amount of ethanol, be then placed in extraction kettle, put into carbonic acid gas, at pressure 20MPa, extract 3h at temperature 40 DEG C, the flow of CO 2 fluid is 20L/h;

Step 3, be dissolved with the supercritical carbon dioxide fluid of extract through flash trapping stage and the second-order separation, flash trapping stage pressure is 6MPa, and temperature is 60 DEG C, and the second-order separation pressure is 5MPa, and temperature is 55 DEG C, obtains orange peel essential oil;

Step 4, orange peel extracting solution first to be filtered with qualitative filter paper, then use organic filtering with microporous membrane, then at 40 DEG C of heating in water bath 30min, be separated through whizzer 10000r/min, obtain orange peel essential oil.

Embodiment two

Step one, fresh orange peel is carried out vacuum-drying 1h at 55 DEG C, be then crushed to 100 orders, make orange peel powder;

Step 2, on orange peel powder, spray a small amount of ethanol, be then placed in extraction kettle, put into carbonic acid gas, at pressure 40MPa, extract 1h under temperature 60 C, the flow of CO 2 fluid is 30L/h;

Step 3, be dissolved with the supercritical carbon dioxide fluid of extract through flash trapping stage and the second-order separation, flash trapping stage pressure is 10MPa, and temperature is 50 DEG C, and the second-order separation pressure is 7MPa, and temperature is 30 DEG C, obtains orange peel essential oil;

Step 4, orange peel extracting solution first to be filtered with qualitative filter paper, then use organic filtering with microporous membrane, then at 50 DEG C of heating in water bath 30min, be separated through whizzer 5000r/min, obtain orange peel essential oil.

Embodiment three

Step one, fresh orange peel is carried out vacuum-drying 1.2h at 50 DEG C, be then crushed to 80 orders, make orange peel powder;

Step 2, on orange peel powder, spray a small amount of ethanol, be then placed in extraction kettle, put into carbonic acid gas, at pressure 30MPa, extract 2h at temperature 40 DEG C-60 DEG C, the flow of CO 2 fluid is 25L/h;

Step 3, be dissolved with the supercritical carbon dioxide fluid of extract through flash trapping stage and the second-order separation, flash trapping stage pressure is 8MPa, and temperature is 55 DEG C, and the second-order separation pressure is 6MPa, and temperature is 40 DEG C, obtains orange peel essential oil;

Step 4, orange peel extracting solution first to be filtered with qualitative filter paper, then use organic filtering with microporous membrane, then at 45 DEG C of heating in water bath 30min, be separated through whizzer 8000r/min, obtain orange peel essential oil.

Claims (1)

1. extract a method for orange peel essential oil, it is characterized in that, comprise the following steps:

Step one, fresh orange peel is carried out vacuum-drying 1h-1.5h at 45 DEG C-55 DEG C, be then crushed to 60-100 order, make orange peel powder;

Step 2, orange peel powder is placed in extraction kettle, put into the carbonic acid gas being entrained with dehydrated alcohol, at pressure 20MPa-40MPa, extract 1h-3h at temperature 40 DEG C-60 DEG C, the flow of CO 2 fluid is 20L/h-30L/h;

Step 3, be dissolved with the supercritical carbon dioxide fluid of extract through flash trapping stage and the second-order separation, flash trapping stage pressure is 6MPa-10MPa, and temperature is 50 DEG C-60 DEG C, and the second-order separation pressure is 5MPa-7MPa, temperature is 30 DEG C-55 DEG C, obtains orange peel extracting solution;

Step 4, orange peel extracting solution first to be filtered with qualitative filter paper, then use organic filtering with microporous membrane, then at 40 DEG C-50 DEG C heating in water bath 30min, be separated through whizzer 5000-10000r/min, obtain orange peel essential oil.