CN108753443A - A kind of preparation method of rapeseed oil - Google Patents
A kind of preparation method of rapeseed oil Download PDFInfo
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- CN108753443A CN108753443A CN201810553573.5A CN201810553573A CN108753443A CN 108753443 A CN108753443 A CN 108753443A CN 201810553573 A CN201810553573 A CN 201810553573A CN 108753443 A CN108753443 A CN 108753443A
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23D—EDIBLE OILS OR FATS, e.g. MARGARINES, SHORTENINGS, COOKING OILS
- A23D9/00—Other edible oils or fats, e.g. shortenings, cooking oils
- A23D9/007—Other edible oils or fats, e.g. shortenings, cooking oils characterised by ingredients other than fatty acid triglycerides
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23D—EDIBLE OILS OR FATS, e.g. MARGARINES, SHORTENINGS, COOKING OILS
- A23D9/00—Other edible oils or fats, e.g. shortenings, cooking oils
- A23D9/02—Other edible oils or fats, e.g. shortenings, cooking oils characterised by the production or working-up
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23D—EDIBLE OILS OR FATS, e.g. MARGARINES, SHORTENINGS, COOKING OILS
- A23D9/00—Other edible oils or fats, e.g. shortenings, cooking oils
- A23D9/02—Other edible oils or fats, e.g. shortenings, cooking oils characterised by the production or working-up
- A23D9/04—Working-up
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B1/00—Production of fats or fatty oils from raw materials
- C11B1/06—Production of fats or fatty oils from raw materials by pressing
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B5/00—Preserving by using additives, e.g. anti-oxidants
- C11B5/0007—Organic substances
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B5/00—Preserving by using additives, e.g. anti-oxidants
- C11B5/0021—Preserving by using additives, e.g. anti-oxidants containing oxygen
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B5/00—Preserving by using additives, e.g. anti-oxidants
- C11B5/0085—Substances of natural origin of unknown constitution, f.i. plant extracts
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11B—PRODUCING, e.g. BY PRESSING RAW MATERIALS OR BY EXTRACTION FROM WASTE MATERIALS, REFINING OR PRESERVING FATS, FATTY SUBSTANCES, e.g. LANOLIN, FATTY OILS OR WAXES; ESSENTIAL OILS; PERFUMES
- C11B5/00—Preserving by using additives, e.g. anti-oxidants
- C11B5/0092—Mixtures
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- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
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- Chemical Kinetics & Catalysis (AREA)
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- Food Science & Technology (AREA)
- Polymers & Plastics (AREA)
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Abstract
The present invention discloses a kind of preparation method of rapeseed oil, includes the following steps：It after rapeseed is stir-fried, puts into twin-screw oil mill and extracts oil, crude rapeseed oil and dregs of rapeseed cake is made, collect crude rapeseed oil and dregs of rapeseed cake respectively；Extract the polyphenol from rapeseed in dregs of rapeseed cake；Polyphenol from rapeseed is mixed with curcumin, composite antioxidant is made；Rapeseed oil finished product is made in crude rapeseed oil refining, composite antioxidant is added, anti-oxidant rapeseed oil is made.The present invention makes full use of the dregs of rapeseed cake generated during rapeseed oil, extracts polyphenol from rapeseed therein, and composite antioxidant then is made with curcumin compounding, is added in rapeseed oil, improves the antioxygenic property of rapeseed oil.
Description
Technical field
The present invention relates to edible oil processing technique field, more particularly to a kind of preparation method of rapeseed oil.
Background technology
Edible oil is easy to the influence of the effects that light, heat, oxygen, enzyme, metal ion and oxidative rancidity is rotten, wherein fat
The oxidation of class mainly has autoxidation, photosensitized oxidation and enzymatic oxidation, and the autoxidation directly reacted with lipid and oxygen molecule is most
It is common；It is more serious that grease oxidation rancid can cause the destruction of nutritional ingredient in fat, especially essential fatty acid to destroy, and makes it
Nutritive value reduces.Human body takes in the grease of oxidative rancidity for a long time, can cause growth retardation, constitution mitigate and skin by
Damage, severe patient can lead to presenility, tumour, cancer and cardiovascular and cerebrovascular disease.It is therefore prevented that edible oil generation oxidative rancidity,
Ensure that quality safety becomes the problem of needing priority control in grease production and storage.
In the prior art, the use of antioxidant is to prevent edible oil oxidative rancidity, extend that its shelf life is the most convenient, passes through
Ji, effective method, are also currently widely used method.Antioxidant, which is one kind, can prevent, postpone the automatic oxygen of protection object
The substance of change process, it reduces food product oxygen content by aoxidizing to migrate, stablizes hydroperoxides, is competed with ion radical
Property chemical combination, destroy peroxide, the activity for inhibiting or reducing catalyst and oxidizing ferment hinders oxidation, makes the grease preservation time
Increase.
Antioxidant can by sources be divided into two kinds of natural and synthetized oxidation preventive agent, and artificial synthesized antioxidant makes
With most widely having tert-butylhydroquinone (TBHQ), butylated hydroxy anisole (BHA), propylgallate (PG), 2,6- bis-
There is some potential safety problems in practical applications to first (BHT) and 2,4,5- trihydroxybutyrophenones (THBP) etc. in tertiary butyl, therefore
And natural inhibitor is more liked by consumer, wherein natural is most popular have vitamin E, tea polyphenols,
Vitamin C etc..But existing natural is lacked in the presence of processing costliness or antioxidant effect are bad in practical applications
Point.
Invention content
The main object of the present invention is to propose a kind of preparation method of rapeseed oil, it is intended to improve the inoxidizability of rapeseed oil
Energy.
To achieve the above object, the present invention proposes a kind of preparation method of rapeseed oil, includes the following steps：
It after rapeseed is stir-fried, puts into twin-screw oil mill and extracts oil, crude rapeseed oil and dregs of rapeseed cake is made, collects respectively
Crude rapeseed oil and dregs of rapeseed cake；
Extract the polyphenol from rapeseed in dregs of rapeseed cake；
Polyphenol from rapeseed is mixed with curcumin, composite antioxidant is made；
Rapeseed oil finished product is made in crude rapeseed oil refining, composite antioxidant is added, anti-oxidant rapeseed oil is made.
Preferably, rapeseed oil finished product is made in crude rapeseed oil refining, adds composite antioxidant, anti-oxidant vegetable seed is made
In the step of oil：The additive amount of the composite antioxidant is the 0.05~0.2% of the rapeseed oil final product quality.
Preferably, in the step of mixing with curcumin by polyphenol from rapeseed, composite antioxidant be made：The polyphenol from rapeseed and
The mass ratio of curcumin is 5:1~3:1.
Preferably, in the step of mixing with curcumin by polyphenol from rapeseed, composite antioxidant be made：The polyphenol from rapeseed and
The mass ratio of curcumin is 4:1.
Preferably, it in the step of mixing with curcumin by polyphenol from rapeseed, composite antioxidant is made, specifically includes：
Polyphenol from rapeseed and curcumin are dissolved in palmitic acid, composite antioxidant is made.
Preferably, in the step of polyphenol from rapeseed and curcumin being dissolved in palmitic acid, composite antioxidant are made：It is described
It is 30~40% that polyphenol from rapeseed and curcumin, which are dissolved in the concentration of ordinary dissolution in palmitic acid,.
Preferably, the step of extracting the polyphenol from rapeseed in dregs of rapeseed cake, including：
Dregs of rapeseed cake is added in the ethyl alcohol that volumetric concentration is 95%, a concentration of 1% phosphoric acid solution tune is then added
It is 5~6 to save pH value, is filtered after 30~40min of stirring extraction at a temperature of 60~70 DEG C, obtains the first filter residue and the first extracting solution；
Into the first filter residue be added volumetric concentration be 95% ethyl alcohol, at a temperature of 40~50 DEG C ultrasonic extraction 20~
It is filtered after 30min, obtains the second extracting solution；
First extracting solution and the second extracting solution are merged, under the conditions of 40~50 DEG C, 0.05~0.1MPa depressurize dense
Contracting centrifuges after enriched product washing, collects sediment and is spray-dried, obtains polyphenol from rapeseed extract.
Preferably, it after rapeseed being stir-fried, puts into twin-screw oil mill and extracts oil, crude rapeseed oil and dregs of rapeseed cake is made,
The step of collecting crude rapeseed oil and dregs of rapeseed cake respectively, specifically includes：
After rapeseed is cleaned, it is 5~8% to be dried to water content at a temperature of 70~80 DEG C, then at 120~130 DEG C
At a temperature of stir-fry 30~40min, then put into twin-screw oil mill and extract oil, crude rapeseed oil and dregs of rapeseed cake is made, collects respectively
Crude rapeseed oil and dregs of rapeseed cake.
Preferably, it after rapeseed being stir-fried, puts into twin-screw oil mill and extracts oil, crude rapeseed oil and dregs of rapeseed cake is made,
In the step of collecting crude rapeseed oil and dregs of rapeseed cake respectively：
The temperature setting of the twin-screw oil mill is 90~100 DEG C, and rotating speed is set as 30~40rpm.
In technical solution provided by the invention, the dregs of rapeseed cake generated during rapeseed oil is made full use of, is extracted
Then polyphenol from rapeseed therein is made composite antioxidant with curcumin compounding, is added in rapeseed oil, improves rapeseed oil
Antioxygenic property has the advantages that antioxidant derives from a wealth of sources, extraction process is simple, of low cost, on the other hand, due to rape cake
Polyphenol from rapeseed in the dregs of rice is extracted, and also improves the utilization rate of dregs of rapeseed cake.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Other relevant attached drawings are obtained according to these attached drawings.
Fig. 1 is the flow diagram of an embodiment of the preparation method of rapeseed oil provided by the invention.
Specific implementation mode
It in order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below will be in the embodiment of the present invention
Technical solution be clearly and completely described.The person that is not specified actual conditions in embodiment, builds according to normal condition or manufacturer
The condition of view carries out.Reagents or instruments used without specified manufacturer is the conventional production that can be obtained by commercially available purchase
Product.
The present invention proposes that a kind of preparation method of rapeseed oil, Fig. 1 show the preparation method of rapeseed oil provided by the invention
An embodiment.Referring to Fig. 1, in the present embodiment, the preparation method of the rapeseed oil includes the following steps：
S10, it after rapeseed stir-fries, puts into twin-screw oil mill and extracts oil, crude rapeseed oil and dregs of rapeseed cake is made, respectively
Collect crude rapeseed oil and dregs of rapeseed cake；
Rapeseed is extracted oil using common process, is carried out when it is implemented, under type such as can be used：By rapeseed
After cleaning, at a temperature of 70~80 DEG C dry to water content be 5~8%, then at a temperature of 120~130 DEG C stir-frying 30~
40min, then put into twin-screw oil mill and extract oil, crude rapeseed oil and dregs of rapeseed cake is made, after filtering, collects crude rapeseed oil respectively
And dregs of rapeseed cake.
Preferably, during rapeseed oil, the temperature setting of the twin-screw oil mill is 90~100 DEG C, rotating speed
It is set as 30~40rpm.
Polyphenol from rapeseed in S20, extraction dregs of rapeseed cake；
Polyphenol is widely present in plant, is a kind of complicated phenols secondary metabolite, has polyhydric phenols structure, portion
Divide the phenolic hydroxyl group that faces in the phenolic hydroxyl group of plant polyphenol easily to be aoxidized, and has stronger capture energy to free radicals such as active oxygens
Power, therefore the ability with very strong inoxidizability and removing free radical.Contain extremely abundant nutritional ingredient in vegetable seed, including
38~45% grease, 20~25% protein and 1.5~3% polyphenols, polyphenol content is other oil plants
10~30 times of seed, some researches show that polyphenol from rapeseed has antitumor, hypoglycemic, antibacterial, anti-oxidant, removing free radical etc.
Physiological function and bioactivity.
However, rapeseed, after producing rapeseed oil, most polyphenol all remains in dregs of rapeseed cake, and only minute quantity is more
Phenol is transferred in grease, and since polyphenol from rapeseed can be combined with protein, influences rapeseed protein digesting and assimilating in animal body,
So for dregs of rapeseed cake, polyphenol is a kind of anti-nutritional factors, and for rapeseed oil, polyphenol is a kind of efficient day
Right antioxidant and nutriment.Therefore, on the one hand polyphenol to be separated off as much as possible from dregs of rapeseed cake, improves vegetable seed
On the one hand the utilization rate of grouts, woods make polyphenol be retained in rapeseed oil as much as possible, improve the quality of rapeseed oil again.This hair
In bright embodiment, the extraction of polyphenol from rapeseed is carried out to the dregs of rapeseed cake of recycling, is on the one hand used as the antioxidant of rapeseed oil, it is another
Aspect also improves dregs of rapeseed cake in the utilization rate as purposes such as animal feeds.
Further, extract dregs of rapeseed cake in polyphenol from rapeseed the step of include：Dregs of rapeseed cake is added to volumetric concentration
It is 5~6 that phosphoric acid solution in 95% ethyl alcohol, to be then added a concentration of 1%, which adjusts pH value, is stirred at a temperature of 60~70 DEG C
It is filtered after 30~40min of extraction, obtains the first filter residue and the first extracting solution；The second that volumetric concentration is 95% is added into the first filter residue
Alcohol filters at a temperature of 40~50 DEG C after 20~30min of ultrasonic extraction, obtains the second extracting solution；First extracting solution and second are carried
It takes liquid to merge, is concentrated under reduced pressure under the conditions of 40~50 DEG C, 0.05~0.1MPa, centrifuged after enriched product washing, it is heavy to collect
Starch is spray-dried, and polyphenol from rapeseed extract is obtained.In this way, improving the extraction for extracting polyphenol from rapeseed from dregs of rapeseed cake
Rate, and it is easy to operate, low energy consumption, shortens extraction time, recovery rate is up to 20~30% or so.Preferably, the stirring
The solid-to-liquid ratio of extraction and ultrasonic extraction is 1g：8mL；The power when ultrasonic extraction is 20kw, frequency 40Hz；The centrifugation
Condition is 5000rpm, 10min；The inlet air temperature of the spray drying is 100 DEG C, and leaving air temp is 70 DEG C, and drying time is about
2h。
S30, polyphenol from rapeseed is mixed with curcumin, composite antioxidant is made；
Curcumin is a kind of chemical composition extracted from the rhizome of some plants in Zingiber, Araeceae, and turmeric is about
It is cyclohexadione compounds containing 3%~6%, medical research shows that curcumin has reducing blood lipid, antitumor, anti-inflammatory, cholagogic, antioxygen
The effects that change.The polyphenol from rapeseed of extraction and curcumin are compounded, composite antioxidant is made, be conducive to after being added in rapeseed oil into
One step improves the inoxidizability of rapeseed oil.Wherein, the composite antioxidant is made in the polyphenol from rapeseed and curcumin compounding
During, the mass ratio of the polyphenol from rapeseed and curcumin is 5:1~3:1.
As a preferred solution, the mistake of the composite antioxidant is made in the polyphenol from rapeseed and curcumin compounding
The mass ratio of Cheng Zhong, the polyphenol from rapeseed and curcumin is 4:1.
Since polyphenols is mostly water-soluble substances, when being used as the antioxidant of grease, antioxidant effect is not strong, is
Dispersibility of the composite antioxidant in rapeseed oil is improved, the polyphenol from rapeseed and curcumin are preferably dissolved in palm
In acid, composite antioxidant is made, wherein it is 30 that the scarlet polyphenol and Chinese ilex polyphenol, which are dissolved in the concentration of ordinary dissolution in palmitic acid,
~40%, in dissolving, the modes such as mechanical agitation, magnetic agitation may be used, supersonic oscillations auxiliary dissolving can also be used.
S40, rapeseed oil finished product is made in crude rapeseed oil refining, composite antioxidant is added, anti-oxidant rapeseed oil is made.
The crude rapeseed oil that twin-screw oil mill squeezing is obtained, by refinery practices such as degumming, depickling, decolorations (using this
The common refined oil method in field) rapeseed oil finished product is made, it is then added again into rapeseed oil finished product made
Standby composite antioxidant is uniformly mixed, obtains anti-oxidant rapeseed oil, wherein the additive amount of the composite antioxidant is
The 0.05~0.2% of the rapeseed oil final product quality.
In technical solution provided by the invention, the dregs of rapeseed cake generated during rapeseed oil is made full use of, is extracted
Then polyphenol from rapeseed therein is made composite antioxidant with curcumin compounding, is added in rapeseed oil, improves rapeseed oil
Antioxygenic property has the advantages that antioxidant derives from a wealth of sources, extraction process is simple, of low cost, on the other hand, due to rape cake
Polyphenol from rapeseed in the dregs of rice is extracted, and also improves the utilization rate of dregs of rapeseed cake.
Technical scheme of the present invention is described in further detail below in conjunction with specific embodiments and the drawings, it should be understood that
Following embodiment is only used to explain the present invention, is not intended to limit the present invention.
Embodiment 1
(1) after cleaning rapeseed, it is 8% to be dried to water content at a temperature of 70 DEG C, is then stir-fried at a temperature of 120 DEG C
40min, then put into twin-screw oil mill and extract oil, the temperature setting of twin-screw oil mill is 90 DEG C, rotating speed is set as 40rpm,
Crude rapeseed oil and dregs of rapeseed cake are made after squeezing, filter and collects crude rapeseed oil and dregs of rapeseed cake respectively；
(2) dregs of rapeseed cake is added in the ethyl alcohol that volumetric concentration is 95%, a concentration of 1% phosphoric acid solution is then added
It is 5 to adjust pH value, is filtered after stirring extraction 40min at a temperature of 60 DEG C, obtains the first filter residue and the first extracting solution；To the first filter residue
The middle ethyl alcohol that volumetric concentration is added and is 95%, filters after ultrasonic extraction 30min at a temperature of 40 DEG C, obtains the second extracting solution；By
One extracting solution and the second extracting solution merge, and are concentrated under reduced pressure under the conditions of 40 DEG C, 0.1MPa, are centrifuged after enriched product washing,
It collects sediment to be spray-dried, obtains polyphenol from rapeseed extract；
(3) it is 5 by mass ratio:1 polyphenol from rapeseed and curcumin, is dissolved according to 30% concentration of ordinary dissolution in palmitic acid,
Composite antioxidant is made；
(4) rapeseed oil finished product is made by refinery practice in rapeseed oil crude oil, and 0.05 part is added into 100 parts of rapeseed oil finished products
Anti-oxidant rapeseed oil is made in composite antioxidant.
Embodiment 2
(1) after cleaning rapeseed, it is 5% to be dried to water content at a temperature of 80 DEG C, is then stir-fried at a temperature of 130 DEG C
30min, then put into twin-screw oil mill and extract oil, the temperature setting of twin-screw oil mill is 100 DEG C, rotating speed is set as 30rpm,
Crude rapeseed oil and dregs of rapeseed cake are made after squeezing, filter and collects crude rapeseed oil and dregs of rapeseed cake respectively；
(2) dregs of rapeseed cake is added in the ethyl alcohol that volumetric concentration is 95%, a concentration of 1% phosphoric acid solution is then added
It is 6 to adjust pH value, is filtered after stirring extraction 30min at a temperature of 70 DEG C, obtains the first filter residue and the first extracting solution；To the first filter residue
The middle ethyl alcohol that volumetric concentration is added and is 95%, filters after ultrasonic extraction 20min at a temperature of 50 DEG C, obtains the second extracting solution；By
One extracting solution and the second extracting solution merge, and are concentrated under reduced pressure under the conditions of 50 DEG C, 0.05MPa, are centrifuged after enriched product washing,
It collects sediment to be spray-dried, obtains polyphenol from rapeseed extract；
(3) it is 4 by mass ratio:1 polyphenol from rapeseed and curcumin, is dissolved according to 40% concentration of ordinary dissolution in palmitic acid,
Composite antioxidant is made；
(4) rapeseed oil finished product is made by refinery practice in rapeseed oil crude oil, and 0.1 part is added into 100 parts of rapeseed oil finished products
Anti-oxidant rapeseed oil is made in composite antioxidant.
Embodiment 3
(1) after cleaning rapeseed, it is 6% to be dried to water content at a temperature of 75 DEG C, then in 120~130 DEG C of temperature
30~40min of lower stir-frying, then put into twin-screw oil mill and extract oil, the temperature setting of twin-screw oil mill is 90~100 DEG C, turns
Speed is set as 30~40rpm, and crude rapeseed oil and dregs of rapeseed cake are made after squeezing, filters and collects crude rapeseed oil and rape cake respectively
The dregs of rice；
(2) dregs of rapeseed cake is added in the ethyl alcohol that volumetric concentration is 95%, a concentration of 1% phosphoric acid solution is then added
It is 5.5 to adjust pH value, is filtered after stirring extraction 35min at a temperature of 65 DEG C, obtains the first filter residue and the first extracting solution；To the first filter
The ethyl alcohol that volumetric concentration is 95% is added in slag, is filtered after ultrasonic extraction 25min at a temperature of 45 DEG C, obtains the second extracting solution；It will
First extracting solution and the second extracting solution merge, and are concentrated under reduced pressure under the conditions of 45 DEG C, 0.08MPa, after enriched product washing from
The heart is collected sediment and is spray-dried, obtains polyphenol from rapeseed extract；
(3) it is 3 by mass ratio:1 polyphenol from rapeseed and curcumin, is dissolved according to 35% concentration of ordinary dissolution in palmitic acid,
Composite antioxidant is made；
(4) rapeseed oil finished product is made by refinery practice in rapeseed oil crude oil, and 0.2 part is added into 100 parts of rapeseed oil finished products
Anti-oxidant rapeseed oil is made in composite antioxidant.
Embodiment 4
(1) after cleaning rapeseed, it is 7% to be dried to water content at a temperature of 80 DEG C, is then stir-fried at a temperature of 122 DEG C
40min, then put into twin-screw oil mill and extract oil, the temperature setting of twin-screw oil mill is 95 DEG C, rotating speed is set as 30rpm,
Crude rapeseed oil and dregs of rapeseed cake are made after squeezing, filter and collects crude rapeseed oil and dregs of rapeseed cake respectively；
(2) dregs of rapeseed cake is added in the ethyl alcohol that volumetric concentration is 95%, a concentration of 1% phosphoric acid solution is then added
It is 5 to adjust pH value, is filtered after stirring extraction 30min at a temperature of 65 DEG C, obtains the first filter residue and the first extracting solution；To the first filter residue
The middle ethyl alcohol that volumetric concentration is added and is 95%, filters after ultrasonic extraction 30min at a temperature of 45 DEG C, obtains the second extracting solution；By
One extracting solution and the second extracting solution merge, and are concentrated under reduced pressure under the conditions of 40 DEG C, 0.06MPa, are centrifuged after enriched product washing,
It collects sediment to be spray-dried, obtains polyphenol from rapeseed extract；
(3) it is 4 by mass ratio:1 polyphenol from rapeseed and curcumin, is dissolved according to 38% concentration of ordinary dissolution in palmitic acid,
Composite antioxidant is made；
(4) rapeseed oil finished product is made by refinery practice in rapeseed oil crude oil, and 0.15 part is added into 100 parts of rapeseed oil finished products
Anti-oxidant rapeseed oil is made in composite antioxidant.
It is stored 3 days under the conditions of anti-oxidant rapeseed oil prepared by above-described embodiment 1 to embodiment 4 is placed on 40 DEG C, is protected from light,
Its peroxide number (peroxide value, POV) size is detected, and is done with the blank rapeseed oil for being not added with composite antioxidant
Control.The detection of peroxide number is analyzed with reference to Chinese food quality standard GB/T 5009.37-2003 edible oil sanitary standards
Method, testing result are as shown in table 1 below.
The peroxide value testing result of 1 rapeseed oil of table
| Control group | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | |
| POV(mep/Kg) | 5.896 | 3.744 | 3.682 | 3.842 | 3.625 |
By the testing result in table 1 it is found that under identical storage requirement, the anti-oxidant rapeseed oil of preparation of the embodiment of the present invention
Peroxide value be significantly lower than and do not add the rapeseed oil of composite antioxidant, illustrate that composite antioxidant therein improves vegetable seed
The antioxygenic property of oil.
It these are only the preferred embodiment of the present invention, be not intended to limit the scope of the invention, for this field
For technical staff, the invention may be variously modified and varied.It is all in the spirit and principles in the present invention etc, made by it is any
Modification, equivalent replacement, improvement etc. should all be included within the scope of the present invention.
Claims (9)
1. a kind of preparation method of rapeseed oil, which is characterized in that include the following steps：
It after rapeseed is stir-fried, puts into twin-screw oil mill and extracts oil, crude rapeseed oil and dregs of rapeseed cake is made, collects vegetable seed respectively
Crude oil and dregs of rapeseed cake；
Extract the polyphenol from rapeseed in dregs of rapeseed cake；
Polyphenol from rapeseed is mixed with curcumin, composite antioxidant is made；
Rapeseed oil finished product is made in crude rapeseed oil refining, composite antioxidant is added, anti-oxidant rapeseed oil is made.
2. the preparation method of rapeseed oil as described in claim 1, which is characterized in that by crude rapeseed oil refining be made rapeseed oil at
In the step of product add composite antioxidant, obtained anti-oxidant rapeseed oil：The additive amount of the composite antioxidant is described
The 0.05~0.2% of rapeseed oil final product quality.
3. the preparation method of rapeseed oil as described in claim 1, which is characterized in that mix polyphenol from rapeseed with curcumin, make
In the step of composite antioxidant：The mass ratio of the polyphenol from rapeseed and curcumin is 5:1~3:1.
4. the preparation method of rapeseed oil as claimed in claim 3, which is characterized in that mix polyphenol from rapeseed with curcumin, make
In the step of composite antioxidant：The mass ratio of the polyphenol from rapeseed and curcumin is 4:1.
5. the preparation method of rapeseed oil as claimed in claim 3, which is characterized in that mix polyphenol from rapeseed with curcumin, make
In the step of composite antioxidant, specifically include：
Polyphenol from rapeseed and curcumin are dissolved in palmitic acid, composite antioxidant is made.
6. the preparation method of rapeseed oil as claimed in claim 5, which is characterized in that polyphenol from rapeseed and curcumin are dissolved in palm fibre
In palmitic acid acid, in the step of composite antioxidant is made：The polyphenol from rapeseed and curcumin are dissolved in the concentration of ordinary dissolution in palmitic acid
It is 30~40%.
7. the preparation method of rapeseed oil as described in claim 1, which is characterized in that extract the polyphenol from rapeseed in dregs of rapeseed cake
Step, including：
Dregs of rapeseed cake is added in the ethyl alcohol that volumetric concentration is 95%, the phosphoric acid solution for being then added a concentration of 1% adjusts pH
Value is 5~6, is filtered after 30~40min of stirring extraction at a temperature of 60~70 DEG C, obtains the first filter residue and the first extracting solution；
The ethyl alcohol that volumetric concentration is 95% is added into the first filter residue, at a temperature of 40~50 DEG C after 20~30min of ultrasonic extraction
Filtering, obtains the second extracting solution；
First extracting solution and the second extracting solution are merged, are concentrated under reduced pressure under the conditions of 40~50 DEG C, 0.05~0.1MPa, it is dense
It is centrifuged after the washing of contracting product, collects sediment and be spray-dried, obtain polyphenol from rapeseed extract.
8. the preparation method of rapeseed oil as described in claim 1, which is characterized in that after rapeseed stir-fries, put into twin-screw
The step of extracting oil in oil press, crude rapeseed oil and dregs of rapeseed cake be made, collecting crude rapeseed oil and dregs of rapeseed cake respectively, it is specific to wrap
It includes：
After rapeseed is cleaned, it is 5~8% to be dried to water content at a temperature of 70~80 DEG C, then in 120~130 DEG C of temperature
30~40min of lower stir-frying, then put into twin-screw oil mill and extract oil, crude rapeseed oil and dregs of rapeseed cake is made, collects vegetable seed respectively
Crude oil and dregs of rapeseed cake.
9. the preparation method of rapeseed oil as claimed in claim 8, which is characterized in that after rapeseed stir-fries, put into twin-screw
In the step of extracting oil in oil press, crude rapeseed oil and dregs of rapeseed cake be made, collecting crude rapeseed oil and dregs of rapeseed cake respectively：
The temperature setting of the twin-screw oil mill is 90~100 DEG C, and rotating speed is set as 30~40rpm.
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| CN201810553573.5A CN108753443A (en) | 2018-05-31 | 2018-05-31 | A kind of preparation method of rapeseed oil |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111876231A (en) * | 2020-08-07 | 2020-11-03 | 深圳龙唛粮油有限公司 | Rapeseed oil and preparation method thereof |
| CN113604277A (en) * | 2021-08-19 | 2021-11-05 | 四川省农业科学院农产品加工研究所 | High-polyphenol rapeseed oil and preparation method thereof |
-
2018
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111876231A (en) * | 2020-08-07 | 2020-11-03 | 深圳龙唛粮油有限公司 | Rapeseed oil and preparation method thereof |
| CN113604277A (en) * | 2021-08-19 | 2021-11-05 | 四川省农业科学院农产品加工研究所 | High-polyphenol rapeseed oil and preparation method thereof |
| CN113604277B (en) * | 2021-08-19 | 2023-07-25 | 四川省农业科学院农产品加工研究所 | High polyphenol rapeseed oil and preparation method thereof |
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