CN103834465A - Method for extracting and processing high-purity lemon oil - Google Patents
Method for extracting and processing high-purity lemon oil Download PDFInfo
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- CN103834465A CN103834465A CN201410081631.0A CN201410081631A CN103834465A CN 103834465 A CN103834465 A CN 103834465A CN 201410081631 A CN201410081631 A CN 201410081631A CN 103834465 A CN103834465 A CN 103834465A
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Abstract
The invention provides a method for extracting and processing high-purity lemon oil. The method comprises the steps of (1) selecting; (2) cleaning; (3) cold grinding: cold grinding lemon surface at normal temperature through a cold grinding oil extractor, wherein rotating speed of a grinding roller is 160-170 rpm, cold grinding duration is 90-110s, epidermis removal rate of the cold ground lemon is no less than 90%, endothelium is exposed and epidermis after cold grinding is in a villous form, epidermal oil bag of the lemon is completely punctured, and meanwhile extraction of lemon juice is not affected; (4) spraying: spraying the lemon cold ground by the step (3) through warm water at 30-38 DEG C, wherein water consumption is 4-5m<3>/hour, thus obtaining a lemon oil extracting liquid; (5) primary separation; (6) secondary separation; and (7) canning finished product. According to the method disclosed by the invention, lemon epidermis removal rate is more than 90%, lemon oil extraction rate is improved and acid value is controlled within a low-limit range; and through warm water spraying, the method greatly improves elution property and increases lemon oil collection efficiency, so as to increase extraction rate of purified lemon oil to be more than 0.05%.
Description
Technical field:
The present invention relates to lemon extract deep process technology field, is a kind of extraction working method of high purity lemon oil specifically.
Background technology:
The content of lemon oil in lemon is greatly about 5～7 ‰, occupy ratio stands out in citrus fruit, the extractive technique of lemon oil starting stage at last also at home, there is the place of plantation lemon to have some little lemon oil to extract factory in Yunnan Province, although the technique using is also by cold grinding separation and Extraction, but the capacity of equipment using is poor, separating force is low, the extraction yield of lemon oil is lower, and product quality is slightly poor, the purity of lemon oil is in 90% left and right, and some high-end products that are applied to lemon oil still rely on import lemon oil.
Summary of the invention:
The object of the invention is to overcome the deficiency of above-mentioned prior art, and a kind of extraction working method of high purity lemon oil is provided, mainly solve the low and low problem of purity of existing lemon oil oil extracting rate.
In order to achieve the above object, the present invention is achieved in that a kind of extraction working method of high purity lemon oil, comprises following operation:
1. select: the foreign material such as lemon and branches and leaves that have rotten or disease and pest are chosen;
2. clean: the lemon selecting is cleaned up with clear water, the lemon cleaning up is sent to subsequent processing by scraper lifting machine;
3. cold grinding: adopt cold grinding to put forward oil machine, at normal temperatures cold grinding is carried out in lemon surface, 160～170 revs/min of the rotating speeds of grinding roller, 90～110 seconds cold grinding time, lemon exterior skin clearance >=90% after cold grinding, endothelium is exposed, and after cold grinding, epidermis is lint shape, and lemon epidermis oil bag does not affect the extraction of lemon juice when fully puncturing;
4. spray: by the 3. lemon after cold grinding of operation, spray with the warm water of 30～38 DEG C, water consumption is 4～5m
3/ hour, make lemon oil extracting solution;
5. flash trapping stage: use disc separator that lemon oil extracting solution is separated, rotating speed is 6500～7000 revs/min, moves 400～700 seconds, deslagging, controls heavy phase pressure at 3～4Mpa, and light phase pressure is 2～3Mpa;
6. the second-order separation: the lemon oil extracting solution that uses disc separator that 5. operation is made carries out secondary separation, and rotating speed is 8000～8500 revs/min, moves 1100～1400 seconds, and deslagging is controlled light phase pressure < 0.5Mpa;
7. finished product is canned: use closed steel drum packaging, adopting stainless steel pipes directly to receive bung filling, is the time decreased oxidation of avoiding exposing in air, and the steel drum of 180 kilograms is filling complete in 5 minutes, filling rear maintenance lemon oil liquid level, at bung place, prevents a barrel interior residual too much air;
Preferably, comprise following operation:
1. select: the foreign material such as lemon and branches and leaves that have rotten or disease and pest are chosen;
2. clean: the lemon selecting is cleaned up with clear water, the lemon cleaning up is sent to subsequent processing by scraper lifting machine;
3. cold grinding: adopt cold grinding to put forward oil machine, at normal temperatures cold grinding is carried out in lemon surface, 170 revs/min of the rotating speeds of grinding roller, 100 seconds cold grinding time, lemon exterior skin clearance >=90% after cold grinding, endothelium is exposed, and after cold grinding, epidermis is lint shape, and lemon epidermis oil bag does not affect the extraction of lemon juice when fully puncturing;
4. spray: by the 3. lemon after cold grinding of operation, spray with the warm water of 35 DEG C, water consumption is 4m
3/ hour, make lemon oil extracting solution;
5. flash trapping stage: use disc separator that lemon oil extracting solution is separated, rotating speed is 6800 revs/min, moves 600 seconds, deslagging, controls heavy phase pressure at 4Mpa, and light phase pressure is 3Mpa;
6. the second-order separation: the lemon oil extracting solution that uses disc separator that 5. operation is made carries out secondary separation, and rotating speed is 8300 revs/min, moves 1200 seconds, and deslagging is controlled light phase pressure < 0.5Mpa;
7. finished product is canned: use closed steel drum packaging, adopting stainless steel pipes directly to receive bung filling, is the time decreased oxidation of avoiding exposing in air, and the steel drum of 180 kilograms is filling complete in 5 minutes, filling rear maintenance lemon oil liquid level, at bung place, prevents a barrel interior residual too much air;
Preferably, prepared lemon oil purity is 99.0%, presents yellow or yellow-green colour, 60 °～68 ° of specific rotatioies, residuals content≤4.0% after evaporation, acid number≤3.0, aldehyde 3.0%～5.5%.
Compared with the prior art the extraction working method of a kind of high purity lemon oil of the present invention has outstanding substantive distinguishing features and marked improvement: present method reaches more than 90% Lemon fruit exterior skin clearance, and be not corrupted to pulp fraction and cause fruit juice waste, increase the extraction yield of lemon oil, acid number is controlled in lower bound weight range, present method is owing to having adopted hot water spray, greatly increase wash-out, improve the collection rate of lemon oil, the extraction yield of lemon oil after purifying is increased more than 0.5 ‰.After improving, lemon oil is carried oil and the time is greatly shortened, not only reduce the volatilization of aroma component in lemon oil, reduced oxidation simultaneously, ensure the color of lemon oil, improve the quality of lemon oil, increase the added value of lemon oil, process concentrated lemon juice simultaneously, improve lemon value-added content of product, enhance one's market competitiveness.
brief description of the drawings
fig. 1 is of the present inventiontechnology Roadmap.
Its concrete test is as follows:
1,
definite (adjustment of roller speed and cold grinding time) of cold grinding time
Employing bagging and the not lemon of bagging are tested, to determine roller speed and the impact of cold grinding time on oil yield.
Different roller speed and under the cold grinding time, carry oil in oily mixed solution, skin slag content and purify after evaporation residue content:
Carrying raw material after oil fruit and need enter the operation of squeezing the juice, is the loss that reduces lemon juice, the squeezing the juice of the operation of being convenient to again to squeeze the juice, simultaneously maximum extraction lemon oil, and with the supporting guarantee line balancing of ability of the equipment of squeezing the juice, therefore, select 170 revs/min of cold grindings, 100S technique.
(testing below the combination of roller speed-cold grinding selection of time 170-100S)
2, spray water temperature simultaneous test:the relatively impact of spray water temperature on oil yield.
(1) spray water addition is 4 m
3/ hour (recycling after filtration);
(2) consider lemon oil volatility, spray water temperature is the highest is controlled at 40 DEG C;
(3) experimental technique:
Blank is spray water use normal temperature processing water;
1# scheme is to be heated to the processing water of 25 DEG C;
2# scheme is to be heated to the processing water of 30 DEG C;
3# scheme is to be heated to the processing water of 35 DEG C;
4# scheme is to be heated to the processing water of 38 DEG C;
5# scheme is to be heated to the processing water of 40 DEG C.
(4) experimental result
Spray process is used instead and is extracted lemon oil quality index after hot water spray:
(5) conclusion
After the heating of i spray water temperature, oil yield obviously improves.
Ii adopts 2# scheme, and oil yield obviously increases.The warm water that i.e. use after cold grinding is 35 DEG C carries out drip washing to Lemon fruit surface.
III is little to the raising contribution of oil yield in the time that spray water temperature is elevated to 40 DEG C, and color and acid number impact on processed oil is larger.Therefore, spray water temperature is controlled at 30～38 DEG C.
, separating machine different rotating speeds and deslagging time contrast experiment: relatively lemon oil refining effect under different rotating speeds
Adopt the second-order separation technique for increasing separating effect, flash trapping stage adopts rotating speed at the disc separator of 6500～7000 revs/min, the second-order separation adopts 8000～8500 revs/min of disc separators, adjusts the separating effect of lemon oil extracting solution Zhong Shui and skin slag according to disengaging time.
Adopt the extraction working method of high purity lemon oil of the present invention to extract lemon oil index:
Embodiment:
For Comprehension and Implementation better, describe the extraction working method of a kind of high purity lemon oil of the present invention in detail below in conjunction with embodiment.
By raw material lemon examine fruit, wash fruit after carry out cold grinding, adopt cold grinding to put forward oil machine, at normal temperatures cold grinding is carried out in lemon surface, 170 revs/min of the rotating speeds of grinding roller, 100 seconds cold grinding time, lemon exterior skin clearance>=90% after cold grinding, endothelium is exposed, after cold grinding, epidermis is lint shape, and lemon epidermis oil bag does not affect the extraction of lemon juice when fully puncturing, by the lemon after cold grinding, spray with the warm water of 35 DEG C, water consumption is 4m
3/ hour, make lemon oil extracting solution, the lemon oil extracting solution that cold grinding is gone out is flushed in receiving tank, use disc separator that lemon oil extracting solution is carried out to flash trapping stage, rotating speed is 6800 revs/min, move 600 seconds, deslagging, controlling heavy phase pressure is 4Mpa, light phase pressure is 3Mpa, the lemon oil extracting solution that uses disc separator to make flash trapping stage carries out the second-order separation, rotating speed is 8300 revs/min, move 1200 seconds, deslagging, controlling light phase pressure is 0.3Mpa, purification obtains high-purity lemon oil, its index lemon oil purity reaches 99.0%, 65.21 ° of specific rotatioies, residuals content 1.78% after evaporation, acid number 0.36, aldehyde (in citral) 3.78%.
Claims (3)
1. an extraction working method for high purity lemon oil, is characterized in that comprising following operation:
1. select: the foreign material such as lemon and branches and leaves that have rotten or disease and pest are chosen;
2. clean: the lemon selecting is cleaned up with clear water, the lemon cleaning up is sent to subsequent processing by scraper lifting machine;
3. cold grinding: adopt cold grinding to put forward oil machine, at normal temperatures cold grinding is carried out in lemon surface, 160～170 revs/min of the rotating speeds of grinding roller, 90～110 seconds cold grinding time, lemon exterior skin clearance >=90% after cold grinding, endothelium is exposed, and after cold grinding, epidermis is lint shape, and lemon epidermis oil bag does not affect the extraction of lemon juice when fully puncturing;
4. spray: by the 3. lemon after cold grinding of operation, spray with the warm water of 30～38 DEG C, water consumption is 4～5m
3/ hour, make lemon oil extracting solution;
5. flash trapping stage: use disc separator that lemon oil extracting solution is separated, rotating speed is 6500～7000 revs/min, moves 400～700 seconds, deslagging, controls heavy phase pressure at 3～4Mpa, and light phase pressure is 2～3Mpa;
6. the second-order separation: the lemon oil extracting solution that uses disc separator that 5. operation is made carries out secondary separation, and rotating speed is 8000～8500 revs/min, moves 1100～1400 seconds, and deslagging is controlled light phase pressure < 0.5Mpa;
7. finished product is canned: use closed steel drum packaging, adopt stainless steel pipes directly to receive bung filling, the steel drum of 180 kilograms is filling complete in 5 minutes, and filling rear maintenance lemon oil liquid level is at bung place.
2. the extraction working method of a kind of high purity lemon oil according to claim 1, is characterized in that comprising following operation:
1. select: the foreign material such as lemon and branches and leaves that have rotten or disease and pest are chosen;
2. clean: the lemon selecting is cleaned up with clear water, the lemon cleaning up is sent to subsequent processing by scraper lifting machine;
3. cold grinding: adopt cold grinding to put forward oil machine, at normal temperatures cold grinding is carried out in lemon surface, 170 revs/min of the rotating speeds of grinding roller, 100 seconds cold grinding time, lemon exterior skin clearance >=90% after cold grinding, endothelium is exposed, and after cold grinding, epidermis is lint shape, and lemon epidermis oil bag does not affect the extraction of lemon juice when fully puncturing;
4. spray: by the 3. lemon after cold grinding of operation, spray with the warm water of 35 DEG C, water consumption is 4m
3/ hour, make lemon oil extracting solution;
5. flash trapping stage: use disc separator that lemon oil extracting solution is separated, rotating speed is 6800 revs/min, moves 600 seconds, deslagging, controls heavy phase pressure at 4Mpa, and light phase pressure is 3Mpa;
6. the second-order separation: the lemon oil extracting solution that uses disc separator that 5. operation is made carries out secondary separation, and rotating speed is 8300 revs/min, moves 1200 seconds, and deslagging is controlled light phase pressure < 0.5Mpa;
7. finished product is canned: use closed steel drum packaging, adopt stainless steel pipes directly to receive bung filling, the steel drum of 180 kilograms is filling complete in 5 minutes, and filling rear maintenance lemon oil liquid level is at bung place.
3. the extraction working method of a kind of high purity lemon oil according to claim 1 and 2, is characterized in that prepared lemon oil purity is 99.0%, presents yellow or yellow-green colour, specific rotation is 60 °～68 °, residuals content≤4.0% after evaporation, acid number≤3.0, aldehyde 3.0%～5.5%.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112940837A (en) * | 2021-03-23 | 2021-06-11 | 康洛信(广东)生物科技有限公司 | Method for extracting finger lemon essential oil |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR840000528B1 (en) * | 1982-08-03 | 1984-04-17 | Korea Res Inst Chem Tech | Method of extracting mandarin oil |
| CN1702162A (en) * | 2005-05-31 | 2005-11-30 | 浙江大学 | Process for extracting tangerine essential oil |
| CN103497835A (en) * | 2013-09-18 | 2014-01-08 | 上海本优机械有限公司 | Method for extracting essential oil from orange juicing peel and oil mixture |
| CN103540409A (en) * | 2013-11-08 | 2014-01-29 | 张帮奎 | Method for producing lemon essential oil |
-
2014
- 2014-03-07 CN CN201410081631.0A patent/CN103834465A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR840000528B1 (en) * | 1982-08-03 | 1984-04-17 | Korea Res Inst Chem Tech | Method of extracting mandarin oil |
| CN1702162A (en) * | 2005-05-31 | 2005-11-30 | 浙江大学 | Process for extracting tangerine essential oil |
| CN103497835A (en) * | 2013-09-18 | 2014-01-08 | 上海本优机械有限公司 | Method for extracting essential oil from orange juicing peel and oil mixture |
| CN103540409A (en) * | 2013-11-08 | 2014-01-29 | 张帮奎 | Method for producing lemon essential oil |
Non-Patent Citations (2)
| Title |
|---|
| MATTHEWS R.F,等: "柑橘香精油的提取及其应用", 《国外农学（果树）》, no. 04, 31 December 1988 (1988-12-31), pages 38 - 41 * |
| 赵文红，等: "冷磨法提取柑橘精油工艺研究", 《广东农业科学》, no. 8, 31 December 2010 (2010-12-31) * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112940837A (en) * | 2021-03-23 | 2021-06-11 | 康洛信(广东)生物科技有限公司 | Method for extracting finger lemon essential oil |
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Application publication date: 20140604 |