CN105132143A - Pumpkin seed oil supercritical extraction process - Google Patents
Pumpkin seed oil supercritical extraction process Download PDFInfo
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- CN105132143A CN105132143A CN201510492127.4A CN201510492127A CN105132143A CN 105132143 A CN105132143 A CN 105132143A CN 201510492127 A CN201510492127 A CN 201510492127A CN 105132143 A CN105132143 A CN 105132143A
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- pumpkin seed
- oil
- semen cucurbitae
- cucurbitae oil
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Abstract
The present invention provides a pumpkin seed oil supercritical extraction process, wherein supercritical CO2 extraction and ultramicro filtration are performed to obtain the pumpkin seed oil. According to the present invention, no chemical reagent is added in the production process, especially in the pumpkin seed oil refining process, the pure physical method is used to refine, and the obtained pumpkin seed oil retains the specific flavonoids, plant sterols, vitamin E and other active substances of the pumpkin seed, and further has characteristics of no solvent residue, no pollution, good safety and high oil product quality; no chemical reagent is added during the refining process, such that no chemical residue reagent exists, and the obtained product can be adopted as the excellent high-end edible oil and cosmetics, or pharmaceutical additives; and the product has characteristics of thick aroma and unique flavor, can be widely suitable for cooking various foods and dishes, has effects of high nutritional value, health preserving, and high anti-oxidation active ingredient ensuring, and is particularly suitable for being promoted in the technical field of small batch special oil production.
Description
Technical field
The present invention relates to a kind of method of Semen Cucurbitae oil supercritical extraction, art: biological and new medical technology, modern agricultural technology, agricultural-food intensive processing and modern accumulating: agriculture and forestry product and extraordinary enhance productivity are processed.
Background technology
Semen Cucurbitae oil is rich in the very high edible vegetable oil of the nutritive value of physiologically active ingredient.Containing the unsaturated fatty acids of about 86% in Semen Cucurbitae oil, wherein 56% is linolic acid, has the effect adjusting fat lipopenicillinase, is of value to the health improving Patients with geriatric cardiovascular and cerebrovascular diseases; Rich in vitamin E and tocotrienols in Semen Cucurbitae oil, wherein content of vitamin E reaches 0.16-0.27%, plants higher than other
Thing oil is a kind of natural antioxidants, has certain effect with delaying senility for human body is anti-oxidant; Also be rich in plant sterol in Semen Cucurbitae oil, content of phytosterol reaches more than 1.5%, has the effect reducing low density cholesterol, auxiliary antilipemic.
The nutrient functional of current Semen Cucurbitae oil gradually be familiar with by human consumer acceptance, the development of its production technology also receives publicity and constantly progress always, but also there is assistant officer's problem to be solved:
(1) in pre-treatment production, raw embryo adopts high temperature to steam stir-fry, and the time is long, and temperature is high, not only causes detrimentally affect to quality of crude oil, also makes power consumption, steam consumption homenergic consumption rising simultaneously.
(2) to get the temperature of oily process too high in squeezing, not only causes that Semen Cucurbitae crude oil color and luster is dark, colloidal impurity content is high, such that follow-up refining difficulty is large, refining yield is low, and meanwhile, protein serious degenerative and destruction in pre-pressed cake, feeding value reduces.
(3) pre-pressed cake leach produce in, leach miscella evaporation and steam stripped temperature high, formed regeneration pigment, Extractive crudeoil quality is reduced, refining difficulty increase.
(4) in oil and fat refining is produced, only focus on product quality indicator, especially Oranoleptic indicator, do not focus on the impact of refining process on Semen Cucurbitae oil Middle nutrition composition, adopt conventional high-temperature concentrated alkali alkali-refining deacidification, the large adsorbent amount decolouring of high temperature, the long-time deodorization of high temperature etc., Semen Cucurbitae oil refining yield is not only made to reduce, the nutritive ingredient plant sterol in Semen Cucurbitae oil and vitamin-E is also caused to lose in a large number, even produce a large amount of objectionable constituent trans fatty acid because overprocessing causes in Semen Cucurbitae oil, the nutritive value of Semen Cucurbitae oil is reduced greatly, product quality reduces.
In order to solve Problems existing in current Semen Cucurbitae oil production process, retaining original nutritive ingredient such as plant sterol and vitamin-E in Semen Cucurbitae oil to greatest extent, reducing and avoid the formation of trans fatty acid, guarantee the nutrition of Semen Cucurbitae oil product, safety; Improve quality product and yield, reduce energy consumption and waste discharge, achieve the impairment synergy that Semen Cucurbitae oil is produced.Be badly in need of a kind of Semen Cucurbitae oil production and processing method.
Summary of the invention
The object of the present invention is to provide the Semen Cucurbitae oil production method of a kind of easy, nutritive value and health care, rational technology.
Technical scheme of the present invention is achieved in that and comprises the steps:
A, airing is carried out to Semen Cucurbitae, control water ratio 3%-5%;
B, the pumpkin seed dried put into freezing 3 ~ 9 hours of the refrigerated tank of-25 DEG C, to be placed in the vacuum environment of-10 DEG C 3 ~ 8 hours, be finally placed in 40 ~ 60 DEG C of vacuum environment drying treatment 2 ~ 7 hours;
C, the pumpkin seed pulverizing will obtained after B, process, sieve by 20 ~ 40 mesh sieve;
D, CO
2supercritical extraction, fluid extraction pressure is 35 ~ 45MPa, extraction temperature 35 ~ 45 DEG C, CO
2fluid flow rate is 800 ~ 1100L/h, and extraction time is 40 ~ 100 minutes, obtains pumpkin seed slightly oily;
E, hyperfiltration remove lipoxygenase, select the hyperfiltration film of molecular weight cut-off 80-120kD, carry out hyperfiltration process to the Semen Cucurbitae oil after filtering;
F, uv irradiating, the Semen Cucurbitae oil after filtration flows through the irradiating unit that ultraviolet lamp is settled in top, and irradiation dose is 300-400J/m2, and irradiation time is 10-20 second.
Compared with prior art the inventive method tool has the following advantages: (1) the invention provides a kind of Semen Cucurbitae oil production technique, particularly in the refining process of Semen Cucurbitae oil, do not add chemical reagent, pure physical method is adopted to carry out refining, the Semen Cucurbitae oil obtained remains the distinctive Flavonoid substances of Semen Cucurbitae and vitamin-E isoreactivity material, and no solvent residue, pollution-free, security good, oil quality is high.Owing to not adding any chemical reagent in extractive process, without chemical residual reagent, can be used as fabulous high-end edible oil and makeup or pharmacy additive.Edible and in medicine can kidney tonifying benefit lung, helping inspiration to relieve asthma, relax bowel; (2) the present invention utilizes Lyophilisation technique for making, is convenient to by walnut kernel pulverize; (3) the present invention utilizes CO
2supercritical extraction technique, make do not have organic solvent residual in product, the crude oil color and luster that simultaneously extracts is more shallow than squeezing Semen Cucurbitae oil, do not need through coming unstuck, alkali refining, decolouring, deodorization process, thus the loss such as natural nutrition VE is few, and also not producing the objectionable impuritiess such as trans fatty acid provides; (4) the present invention utilizes ultra micro membrane filtration technique, eliminates in Semen Cucurbitae oil storage process and causes rotten biotic factor; Oxygenase in Semen Cucurbitae oil, in storage process, the double bond fracture in the unsaturated fatty acids in catalyzed oxidation Semen Cucurbitae oil, produces the smell substances such as aldehyde ketone and produces, and Semen Cucurbitae oil is gone bad; Tradition hot moulding utilizes high temperature to make oxygenase deactivation; Solvent extraction method is in refining process, make oxygenase inactivation; Technique of the present invention is without heat denatured process, also do not carry out refining, and adopt ultra micro membrane filtration technique, the lipoxygenase in ultrafiltration removing Semen Cucurbitae, eliminate in Semen Cucurbitae oil storage process and cause rotten biotic factor, and the clarity simultaneously added; (5) the present invention utilizes uv irradiating technology, kills the activity of fatty oxygenase do not removed completely in hyperfiltration process, and destroys the structure of remaining aflatoxin further, reaches the object eliminated further.In order to ensure the circulation of ultrafiltration, the ultra-filtration membrane of the 80-120KD selected in technique, can remove most lipoxygenase, but can not remove completely.Remaining lipoxygenase, utilizes the uv irradiating process of low dosage, both can ensure that the quality of oil is not suffered a loss, can reduce again residual fat oxygenase further active, ensure the storage of oil.Meanwhile, utilize the wavelength of UV-light short, energy is large, when being irradiated to body surface, is easily subsequently absorbed in the material, becomes the interior energy of material, destroys the characteristic of the chemical bond of material molecule, reduces the aflatoxin content in Semen Cucurbitae oil further; The aldehyde material letones of rapid removal wherein in peculiar smell, and produce the free fatty acids of peculiar smell, and ensure that nutritive substance loss is wherein little; (6) in the high-quality grease that the present invention produces, because be rich in the natural antioxidantss such as natural VE, do not need in grease storage process additionally to add oxidation inhibitor.
The invention provides the Semen Cucurbitae oil production method of a kind of easy, nutritive value and health care, rational technology, can produce for short run special oil and technical support is provided, be suitable for promoting in edible fat production technical field.
Embodiment
A kind of Semen Cucurbitae oil production technique:
A, airing is carried out to pumpkin seed, control water ratio 4%;
B, the pumpkin seed dried put into freezing 6 hours of the refrigerated tank of-25 DEG C, to be placed in the vacuum environment of-10 DEG C 7 hours, be finally placed in 45 DEG C of vacuum environment drying treatment 3 hours;
C, the pumpkin seed pulverizing will obtained after B, process, sieve by 20 mesh sieve;
D, CO
2supercritical extraction, fluid extraction pressure is 40MPa, extraction temperature 40 DEG C, CO
2fluid flow rate is
1000L/h, extraction time is 70 minutes, obtains pumpkin seed slightly oily;
E, hyperfiltration remove lipoxygenase, select the hyperfiltration film of molecular weight cut-off 80-120kD, carry out hyperfiltration process to the Semen Cucurbitae oil after filtering;
F, uv irradiating, the Semen Cucurbitae oil after filtration flows through the irradiating unit that ultraviolet lamp is settled in top, and irradiation dose is 300-400J/m
2, irradiation time is 15 seconds.
The present invention can be used for special oil and produces, and is applicable to nutritive value and health care's edible fat production, accomplishes pollution-free, less energy-consumption.
Claims (3)
1. produce a working method for Semen Cucurbitae oil, it is characterized in that comprising the steps:
A, airing is carried out to Semen Cucurbitae, control water ratio 3%-5%;
B, the pumpkin seed dried put into freezing 3 ~ 9 hours of the refrigerated tank of-25 DEG C, to be placed in the vacuum environment of-10 DEG C 3 ~ 8 hours, be finally placed in 40 ~ 60 DEG C of vacuum environment drying treatment 2 ~ 7 hours;
C, the pumpkin seed pulverizing will obtained after B, process, sieve by 20 ~ 40 mesh sieve;
D, CO
2supercritical extraction, fluid extraction pressure is 35 ~ 45MPa, extraction temperature 35 ~ 45 DEG C, CO
2fluid flow rate is 800 ~ 1100L/h, and extraction time is 40 ~ 100 minutes, obtains pumpkin seed slightly oily;
E, hyperfiltration remove lipoxygenase, select the hyperfiltration film of molecular weight cut-off 80-120kD, carry out hyperfiltration process to the Semen Cucurbitae oil after filtering;
F, uv irradiating, the Semen Cucurbitae oil after filtration flows through the irradiating unit that ultraviolet lamp is settled in top, and irradiation dose is 300-400J/m2, and irradiation time is 10-20 second.
2. Semen Cucurbitae oil supercritical extraction process according to claim 1, is characterized in that, adopts 30 mesh sieve to sieve in C, step.
3. Semen Cucurbitae oil supercritical extraction process according to claim 1 and 2, is characterized in that, the molecular weight cut-off of the hyperfiltration film adopted in E, step is 100kD.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510492127.4A CN105132143A (en) | 2015-08-12 | 2015-08-12 | Pumpkin seed oil supercritical extraction process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510492127.4A CN105132143A (en) | 2015-08-12 | 2015-08-12 | Pumpkin seed oil supercritical extraction process |
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| CN105132143A true CN105132143A (en) | 2015-12-09 |
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|---|---|---|---|
| CN201510492127.4A Pending CN105132143A (en) | 2015-08-12 | 2015-08-12 | Pumpkin seed oil supercritical extraction process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110551565A (en) * | 2019-10-09 | 2019-12-10 | 武汉轻工大学 | Processing production method of strong-fragrance pumpkin seed oil |
-
2015
- 2015-08-12 CN CN201510492127.4A patent/CN105132143A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110551565A (en) * | 2019-10-09 | 2019-12-10 | 武汉轻工大学 | Processing production method of strong-fragrance pumpkin seed oil |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151209 |
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| WD01 | Invention patent application deemed withdrawn after publication |