CN105462686A - Edible oil deacidification method and edible oil preparation method - Google Patents
Edible oil deacidification method and edible oil preparation method Download PDFInfo
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- CN105462686A CN105462686A CN201410393304.9A CN201410393304A CN105462686A CN 105462686 A CN105462686 A CN 105462686A CN 201410393304 A CN201410393304 A CN 201410393304A CN 105462686 A CN105462686 A CN 105462686A
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Abstract
The present invention belongs to the field of food and agricultural product processing, and particularly relates to the field of edible oil, more particularly to an edible oil deacidification method and an edible oil preparation method. The present invention further relates to peanut cake powder, a composition, and uses of the peanut cake powder or composition in edible oil filtration deacidification or edible oil preparation. Particularly the edible oil deacidification method comprises adding a solid alkali to perform deacidification. According to the present invention, the acid value of the oil can be effectively reduced while the rich aroma taste and the antioxidant substance are retained; and the advantages of no sewage emission, heat energy saving, electric energy saving, simple equipment, and good application prospect are provided.
Description
Technical field
The invention belongs to food and processing of farm products field, particularly, relate to edible oil field, more specifically, relate to a kind of edible oil acid stripping method and a kind of method preparing edible oil.The invention still further relates to a kind of peanut cake powder, a kind of composition, and the purposes that this peanut cake powder or composition filter depickling at edible oil or prepare in edible oil.
Background technology
There are the acidic substance such as free fatty acids in vegetables oil, the content of acidic substance has larger impact for Vegetable Oil Quality, usually weighs the content of vegetables oil acidic substance with acid value height.Specify in China standard GB/T 1534-2003, Ballast convention acid value limitation is 1.0mg (KOH)/g.The height of finished product peanut oil acid value is subject to the impact of peanut raw material comparatively greatly, and raw material acid number is high, and squeeze the peanut oil acid value just height obtained, vice versa.
At present, the method reducing peanut oil acid value mainly contains chemical refining method, physical refining method etc.
Chemical refining method generally adopts the unnecessary acidic substance in the strong alkali solutions such as potassium hydroxide, sodium hydroxide, calcium hydroxide and in grease, and reach the object of depickling, also referred to as alkali refining method, current most enterprises adopts this kind of acid stripping method.Wherein by industrial centrifugal machine, water-dissolving phase (water, saponified, water-soluble substances form) is separated with grease, and removes micro-moisture through grease moisture eliminator, make water content in oil be down to qualified level.
Consume a large amount of alkali in chemical refining process, produce a large amount of waste water and pollute the environment if do not processed, and usually use excessive alkali, part neutral grease also can be caused to be produced grease by saponification and lose.
Chemical refining method also relates to high temperature, high vacuum condition, and the smell substance in grease, fragrance matter and volatile material are removed, and wherein also comprise part free fatty acids.
Have cold press peanut oil and plain press one-level peanut oil to be not depicklings in current supermarket, after squeezing, filter at low temperature comes unstuck, after impurity elimination, can allocate canned.If other low temperature pressing edible oil needs depickling, be also performed, as Semen Maydis oil by chemical refining method.
Physical refining method is fast eliminating free fatty acids and small-molecule substance under high vacuum, high temperature, and this technique is applied at Some Enterprises.
Physical refining method solves the shortcoming of chemical refining method, but requires higher to fat degumming, decoloration process, is not easy to grasp.
Vegetable oil as in peanut oil, containing peanut oil fragrance matter, as Pyrazine (accounting for 32.89% of total flavour ingredient), pyridines, furans, pyroles, acid, ketone, aldehyde, ester class etc.; Antioxidant, as vitamin-E, sterol etc.; Coloring matter, is mainly the pigment with the peculiar color and luster of product that liposoluble vitamin produces as the Maillard reaction produced in carotenoid, chlorophyll and the course of processing.
And no matter be physical refining method or chemical refining method, peanut oil fragrance matter, antioxidants, coloring matter all can be caused to lose in a large number, not only make vegetables oil particularly peanut oil lose natural local flavor and mouthfeel, product resistance of oxidation also can be caused not enough and not save-resistant.
Therefore, need to develop a kind of new edible oil particularly deacidifying process of peanut oil and preparation technology.
Summary of the invention
The present inventor, through deep research and performing creative labour, obtains one and removes peanut oil free fatty acids by step-wise filtration means, reduce the method for acid value and a kind of method preparing edible oil.The present inventor is surprised to find, and method of the present invention effectively can not only reduce acid value of lipids, and can also retain giving off a strong fragrance taste and anti-oxidant physical property material, color and luster is also very satisfactory.Thus provide following invention:
One aspect of the present invention relates to a kind of edible oil acid stripping method or a kind of method reducing edible oil acid value, and wherein (in crude oil) adds solid alkali and carry out depickling.
Edible oil acid stripping method according to any one of the present invention or reduce the method for edible oil acid value, is characterized in that any one in the item of following (1) to (4) or multinomial:
(1) described solid alkali is solid calcium hydroxide; Particularly, be calcium hydroxide powder; More specifically, be the calcium hydroxide powder of drying;
(2), when adding solid alkali, crude oil temperature is 35 DEG C-80 DEG C; Be preferably 40 DEG C-60 DEG C; Be more preferably 45 DEG C-50 DEG C;
Be not limited to theoretical restriction, lower than 35 DEG C, filtration velocity is slow, and 80 DEG C is generally squeeze crude oil temperature general after squeezing machine, pipeline to stirred pot, is also the top temperature of adding.The present inventor is found by research, and 45 DEG C-50 DEG C achieve good balance in filtration velocity and quality.
(3) amount that described solid alkali adds is the 0.005%-0.1% of crude quality; Be preferably 0.015%-0.07%; Be more preferably 0.025%-0.05% or 0.03%-0.04% or 0.031%-0.038%;
(4) feed postition of solid alkali is directly add in the crude oil in stirring.
Be not limited to theoretical restriction, the present invention uses pressed powder object to be moisture in order to reduce in oil, and the mode that can simultaneously coordinate gentleness to add water, allows water slowly, marginally discharge.
Be not limited to theoretical restriction, described alkali pressed powder or calcium hydroxide pressed powder are dried powder (not moisture).Moisture calcium hydroxide is not save-resistant, and easy and Carbon Dioxide in Air reaction generates calcium carbonate.In addition, Sodium Hydroxide Alkaline is strong, and reaction is violent, easily destroys other compositions.
Monitoring solid alkali such as calcium hydroxide and free fatty acids can be carried out by this area conventional means whether fully to react, such as, detect acid value in whipping process, in grease whipping process, acid value no longer changes, and thinks that reaction has stopped or very slow, thus formulates technique according to the time.
Edible oil acid stripping method according to any one of the present invention or reduce the method for edible oil acid value, wherein, before adding solid alkali, afterwards or simultaneously, adds flocculating aids and/or peanut cake powder.
Be not limited to theoretical restriction, flocculating aids is porous mass, can form filtering layer on the filter, increases filtration area, contributes to impurity screening.Particularly, described flocculating aids is be selected from one or more of perlite, diatomite, atlapulgite, attapulgite, gac and Magnesium Silicate q-agent; More specifically, be perlite and/or diatomite.
Edible oil acid stripping method according to any one of the present invention or reduce the method for edible oil acid value, is characterized in that following 1) to 6) any one in item or multinomial:
1) described flocculating aids and peanut cake powder add simultaneously or successively;
2) amount that described flocculating aids adds is the 0.05%-2% of crude quality; Be preferably 0.1%-1%; Be more preferably 0.2%-0.4%;
3) feed postition of flocculating aids and/or peanut cake powder is for directly to add;
4) amount that peanut cake powder adds is the 0.01%-1% of crude quality; Particularly, be 0.15%-0.4%;
5) described peanut cake powder be peanut hot pressing squeeze after residual solids cake ground-slag broken after powder;
6) water ratio of described peanut cake powder is 10%-75%; Be preferably 30%-60%; Be more preferably 45%-55%.
Be not limited to theoretical restriction, use pressed powder, directly do not add water, by moisture peanut cake powder make up water to provide the required water required for neutralization reaction, peanut cake powder is the material of porous simultaneously, is conducive to the saponified of absorption reaction generation.Peanut cake powder itself has the effect of flocculating aids, and it is porous mass, and space is more, can adsorb saponified impurity of Denging.
Be not limited to theoretical restriction, at a lower temperature, the mixing of the aqueous solution, grease easily causes emulsification, thus make water, oil content layer not thorough, effectively can not be separated, cause oil-containing in water, Water in oil after centrifugal, not only in production efficiency, reaction fast, key is beneficial to oily soap and is separated to improve temperature.The present invention provides reaction necessary water by moisture peanut cake powder, make reaction temperature and, then by rational filtration process distribution imurity-removal.
In one embodiment of the invention, flocculating aids and peanut cake powder add simultaneously.
Described flocculating aids and peanut cake powder also can add or add with calcium hydroxide pressed powder simultaneously before adding calcium hydroxide pressed powder.Preferably, after adding calcium hydroxide pressed powder, flocculating aids and peanut cake powder is added again.Be not limited to theoretical restriction, be conducive to material (comprising the material added in peanut oil, such as calcium hydroxide, peanut cake powder, flocculating aids etc.) like this has the regular hour to go to be uniformly dispersed in oil, otherwise easily lumps, and can not make full use of.
Preferably, adding flocculating aids and peanut cake powder with the timed interval adding calcium hydroxide pressed powder is 1 hour.
Preferably, the particle diameter of described peanut cake powder or median size are below 1mm.
Be not limited to theoretical restriction, consider the impact that leaching solvent is residual, preferably, described peanut cake powder is peanut squeeze cake powder.
Edible oil acid stripping method according to any one of the present invention or a kind of method reducing edible oil acid value, it does not comprise decolouring and/or deodorization step.
Edible oil acid stripping method according to any one of the present invention or a kind of method reducing edible oil acid value, it does not comprise the step removing water.
Another aspect of the present invention relates to a kind of method preparing edible oil, comprises edible oil acid stripping method according to any one of the present invention or reduces the method for edible oil acid value.
The method preparing edible oil according to any one of the present invention, it also comprises the step (first time filters) that de-soap filters; Particularly, the oil temperature that described de-soap filters is 30 DEG C-45 DEG C; Be preferably 35 DEG C-38 DEG C.
The method preparing edible oil according to any one of the present invention, it also comprises the steps:
Oil after depickling and de-soap being filtered continues to stir, and continues cooling and carry out filtration of coming unstuck after adding flocculating aids, obtained edible oil; Particularly, the temperature of filtering of coming unstuck described in is 17 DEG C-25 DEG C; Particularly, be 19 DEG C-21 DEG C.Particularly, the amount that described flocculating aids adds is the 0.05%-2% of crude quality; Be preferably 0.1%-1%; Be more preferably 0.2%-0.4%
Be not limited to theoretical restriction, the saponified and graininess impurity for the first time in filtering and removing peanut oil, obtains depickling peanut oil, depickling peanut oil continues to stir cooling, add flocculating aids, treat that filtration of coming unstuck is carried out in temperature cooling, finally obtain as clear as crystal low acid value squeezing peanut oil.
Another aspect of the invention relates to a kind of edible oil, and its method preparing edible oil according to any one of the present invention obtains.
Another aspect of the invention relates to a kind of peanut cake powder, and its water ratio is 10%-75%; Be preferably 30%-60%; Be more preferably 45%-55%; Particularly, the particle diameter of described peanut cake powder or median size are for being less than or equal to 1mm; Preferably, described peanut cake powder be peanut hot pressing squeeze after residual solids cake ground-slag broken after powder.
In one embodiment of the invention, described peanut cake powder be residual solids cake ground-slag after peanut squeezing broken after add water and mix obtained.Water ratio is 10%-75% (mass percent, quality/(cake powder+water) quality of water), is preferably 30%-60%, is more preferably 45%-55%.
Another aspect of the invention relates to a kind of composition, and it comprises peanut cake powder described in any one of the present invention and flocculating aids, and optional calcium hydroxide; Particularly, described flocculating aids is be selected from one or more of perlite, diatomite, atlapulgite, attapulgite, gac and Magnesium Silicate q-agent; More specifically, be perlite and/or diatomite; Preferably, wherein the mass ratio of peanut cake powder and flocculating aids is 1:(0.5-2), be more preferably 1:(1-1.5).
Another aspect of the invention relates to the peanut cake powder described in any one of the present invention or the composition described in any one of the present invention is preparing the purposes in edible oil, edible oil depickling reagent or edible oil filtration medium.
In the present invention, described crude oil is also called crude oil.What described crude peanut (crude peanut oil) was namely obtained by physical squeezing contains colloid, the grease of impurity, temperature is at 90 DEG C-120 DEG C, temperature to 35 DEG C-80 DEG C is reduced gradually by stirring, appropriate calcium hydroxide powder is added successively according to acid value of lipids, flocculating aids, moisture squeezing peanut cake powder, stirring continues to be cooled to 36 DEG C, carry out de-soap filtration, plate-and-frame filter press is used to filter (basic based on Plate Filtration in current industry, most economical, effective, simple to operate) remove saponified, granule foreign, grease after filtration continues to add flocculating aids and stirs, be cooled to 20 DEG C, carry out filtering and removing colloid of coming unstuck, obtain depickling, come unstuck the squeezing peanut oil of clear.
Adding proportion mentioned in the present invention, if not otherwise specified, all refers to the quality of additive (calcium hydroxide, flocculating aids or peanut cake powder) and the per-cent of oil quality.
In the present invention, peanut cake powder addition is 0.01%-1%, is preferably 0.05%-0.7%, is more preferably 0.15%-0.4%.
The oil temperature that de-soap described in the present invention filters is 30 DEG C-45 DEG C, and being preferably 33 DEG C-40 DEG C, is more preferably 35 DEG C-38 DEG C.
In the present invention, term " comes unstuck " and refers to and remove peptized impurities in crude oil (crude oil), colloid mainly based on phosphatide, and containing a small amount of protein and glucide.
To come unstuck described in the present invention filtration, described flocculating aids be perlite, diatomite, atlapulgite, attapulgite, gac, Magnesium Silicate q-agent one or more, being preferably perlite, a kind, diatomite or 2 kinds of mixing, is more preferably perlite.
The temperature of filtering of coming unstuck described in the present invention is 17 DEG C-25 DEG C, and being preferably 18 DEG C-22 DEG C, is more preferably 19 DEG C-21 DEG C.
In the present invention, described edible oil is vegetables oil, such as peanut oil, rapeseed oil, Semen Maydis oil, linseed oil wet goods; Preferably, be peanut oil.Described crude oil preferably squeezes crude peanut.
In the present invention, " peanut cake " in described peanut cake powder is not limited to peanut cake, also comprises the residue of peanut after squeezing.
The beneficial effect of the invention
1. effectively acid value of lipids is reduced.
2. giving off a strong fragrance taste, anti-oxidant physical property material is retained.
3. the present invention can not bring edible oil index deterioration and peculiar smell to produce, and need not decolour, namely deodorization obtain the edible oil (such as squeezing one-level or two-grade peanut oil) that index meets national standard.
4. without sewage discharge.
5. saving heat energy, electric energy, equipment is simple.
Embodiment
Below in conjunction with embodiment, embodiment of the present invention are described in detail, but it will be understood to those of skill in the art that the following example only for illustration of the present invention, and should not be considered as limiting scope of the present invention.Unreceipted actual conditions person in embodiment, the condition of conveniently conditioned disjunction manufacturers suggestion is carried out.
preparation example 1: the preparation of moisture peanut cake powder
1. experiment material and plant and instrument
Squeezing peanut cake, water, stirrer (cylindrical vessel, containing motor, stirring wing, speed reduction unit, frequency transformer).
2. experimental procedure
Squeezing peanut cake is crushed to pulverulence, screens out particle diameter and is greater than 1mm particle; Peanut cake powder is added in stirrer, according to quality per-cent, adds water, be stirred to evenly.
3. experimental result
Obtain moisture peanut cake powder, water ratio is about 50%.
For the following examples 1-3.
embodiment 1: the preparation of peanut oil sample 1
1. experiment material and plant and instrument
Peanut cake powder, grease stirred pot (cylindrical tank, motor, speed reduction unit, stirring wing, circulating water comb, frequency transformer, temperature control unit), flame filter press (filtration medium is 1-2 metafiltration cloth), flocculating aids (perlite, atlapulgite etc.) that preparation example 1 is obtained.
2. experimental procedure
Peanut squeezing crude oil, acid value is 1.15mg (KOH)/g, and quality is 14.3T, oil temperature adds 5.5kg calcium hydroxide powder 55 DEG C time, additional proportion is 0.038%, after stirring, then adds 40kg perlite, adding proportion is 0.28%, continue the squeezing peanut cake powder 30kg adding moisture 50% after stirring, continue to be stirred to 38 DEG C, start to filter, initial stage filter oil loops back in crude oil, is collected into another container and continues to stir cooling after the depickling oil after to be filtered is limpid.
Depickling oil adds 40kg pearlite filtering aid and stirs, and when being cooled to 20 DEG C, carrying out second time and filters, the squeezing peanut oil obtain depickling, coming unstuck.
3. experimental result
Peanut oil acid value reduces to 0.68mg (KOH)/g by 1.15mg (KOH)/g.
Peanut oil ortho acid valency 1.15, can only meet GB squeezing secondary, by art breading of the present invention, obtain the peanut oil of squeezing one-level.
Wherein, the mensuration of acid value is carried out with reference to the mensuration of GB/T5530 animal-plant oil acid number and acidity, and the following examples 2-3 is identical.
embodiment 2: the preparation of peanut oil sample 2
1. experiment material and plant and instrument
Peanut cake powder, grease stirred pot (cylindrical tank, motor, speed reduction unit, stirring wing, circulating water comb, frequency transformer, temperature control unit), flame filter press (filtration medium is 1-2 metafiltration cloth), flocculating aids (perlite, atlapulgite etc.) that preparation example 1 is obtained.
2. experimental procedure
Squeezing crude peanut, acid value is 1.41mg (KOH)/g, calcium hydroxide powder addition is 5.5kg, additional proportion is 0.038%, after stirring, add 40kg perlite again, adding proportion is 0.28%, atlapulgite addition is 10kg, and adding proportion is 0.07%, continues the squeezing peanut cake powder 35kg adding moisture 50% after stirring, continue to be stirred to 38 DEG C, start to filter, initial stage filter oil loops back in crude oil, is collected into another container and continues to stir cooling after the depickling oil after to be filtered is limpid.
Depickling oil adds 20kg perlite, 20kg super-cell stirs, and when being cooled to 21 DEG C, carrying out second time and filters, the squeezing peanut oil obtain depickling, coming unstuck.
3. experimental result
Peanut oil acid value reduces to 0.87mg (KOH)/g by 1.41mg (KOH)/g.
embodiment 3: the preparation of peanut oil sample 3
1. experiment material and plant and instrument
Peanut cake powder, grease stirred pot (cylindrical tank, motor, speed reduction unit, stirring wing, circulating water comb, frequency transformer, temperature control unit), flame filter press (filtration medium is 1-2 metafiltration cloth), flocculating aids (perlite, atlapulgite etc.) that preparation example 1 is obtained.
2. experimental procedure
Squeezing crude peanut, acid value is 1.41mg (KOH)/g, and calcium hydroxide powder addition is 4.5kg, and additional proportion is 0.031%, after stirring, add 40kg perlite again, adding proportion is 0.28%, continues the squeezing peanut cake powder 35kg adding moisture 50% after stirring, continue to be stirred to 38 DEG C, start to filter, initial stage filter oil loops back in crude oil, is collected into another container and continues to stir cooling after the depickling oil after to be filtered is limpid.
When depickling oil cooling to 19.5 DEG C, add 40kg pearlite filtering aid, 25kg attapulgite, 5kg gac, stir and carry out second time filtration, the squeezing peanut oil obtain depickling, coming unstuck.
3. experimental result
Peanut oil acid value reduces to 0.92mg (KOH)/g by 1.41mg (KOH)/g.
comparative example 1: the preparation (chemical refining method) of control sample
Adopt chemical refining method, peanut oil sample prepared by the squeezing peanut oil crude oil higher by acid value, comprises the steps such as hydration degum-alkali-refining deacidification-carclazyte decolouring-vacuum deodorizing.Concrete grammar is as follows:
1. hydration degum
Phosphatide is combined with water, generates hydrated phospholipid, and produce flocculation group, proportion strengthens, and by centrifugation, separates together with water in grease.
2. alkali-refining deacidification
| Temperature DEG C | Excess alkali (oil is heavy) | Reaction times | Separate mode |
| 80 | 0.1－0.3％ | 30min | Disk centrifugal separator |
Under comparatively high temps, add alkali lye, generate soap with grease Free Fat acid-respons, meanwhile, neutral grease molecules is hydrolyzed, hydrolysis lipid acid out equally and alkali react, cause grease to lose.Meanwhile, due to the effect of alkali, water, the loss such as coloring matter, fragrance.
3. adsorption bleaching
By sorbent materials such as carclazytes, the pigment in absorb oil, poisonous and harmful substances, make color with oil color shoal, and reaches decolouring object.
4. deodorization (smelly mainly from grease self smell as soybean oil beany flavor, grease thermal treatment time the oxides taste etc. that produces)
| Temperature DEG C | Absolute pressure Pa | Reaction times |
| 230－270 | 260－650 | 2－4h |
experimental example 1: fragrance detection/evaluation experimental
1. laboratory sample:
Sample 1-3 prepared by embodiment 1-3, control sample prepared by comparative example 1, low temperature comes unstuck and squeezes peanut oil (Ballast convention of traditional technology).
2. experimental technique
By laboratory sample random number, the distinctive fragrance standard of personnel's foundation peanut oil of sensory evaluation is participated in (in peanut oil national standard by 5-11 position, fragrance flavour specify " smell that peanut oil is intrinsic ") for according to giving evaluation that 1-10 divides to tested sample, (the intrinsic smell of strong peanut 10 parts, the intrinsic smell of lighter peanut are 6 points, do not have the intrinsic fragrance of peanut to be 1 point; Usually squeezing peanut oil is come unstuck for standard 10 points with low temperature), high close to mark with standard peanut oil flavor concentration, on the contrary mark is low.
3. experimental result
Because chemical refining peanut oil loses the peculiar fragrance of peanut oil substantially, mark very low; And peanut oil prepared by the method that the present invention relates to maintains the original taste of peanut oil substantially, mark is evaluated high, and 2 kinds of technique part fragrance also can judge by mode qualitatively, and chemical refining does not have peanut oil fragrance, aromatic flavour of the present invention.
Control sample prepared by comparative example 1: 2-4 divides;
Sample 1-3:8-10 prepared by embodiment 1-3 divides;
Low temperature comes unstuck and squeezes peanut oil (Ballast convention of traditional technology): 10 points (standard).
experimental example 2: antioxidant test experience
1. laboratory sample:
Sample 1-3 prepared by embodiment 1-3, control sample prepared by comparative example 1, low temperature comes unstuck and squeezes peanut oil (Ballast convention of traditional technology).
2. experimental technique
At 110 DEG C, (temperature condition specified in standard method is 100-120 DEG C to " mensuration of the GB/T21121 animal-plant oil oxidative stability " method of use, present method selects 110 DEG C) oxidation induction time of test products under condition, the test result time is longer, oxidation-resistance is stronger, and Antioxidants or the activity of grease itself are larger.
The detection of fragrance matter can use advanced plant and instrument to measure content or the ratio of each kind material, but contriver is limited to hardware instruments deficiency, is tested by people's sensory evaluation test.
3. experimental result
Control sample prepared by comparative example 1: 5-6 hour;
Sample 1-3:8-9 hour prepared by embodiment 1-3;
Low temperature comes unstuck and squeezes peanut oil (Ballast convention of traditional technology): 8-10 hour.
experimental example 3: color and luster test experience
1. laboratory sample:
Sample 1-3 prepared by embodiment 1-3, control sample prepared by comparative example 1, low temperature comes unstuck and squeezes peanut oil (Ballast convention of traditional technology).
2. experimental technique
Use lovibond test meter, under 133.4mm light path, test grease color.
3. experimental result
Control sample prepared by comparative example 1: red value 2.5, yellow value 20;
Sample 1-3 prepared by the inventive method product embodiments 1-3: red 3.0-3.3, yellow value 19-20;
Low temperature comes unstuck and squeezes peanut oil (Ballast convention of traditional technology): red 3.3, yellow value 20.
Although the specific embodiment of the present invention has obtained detailed description, it will be understood to those of skill in the art that.According to disclosed all instructions, can carry out various amendment and replacement to those details, these change all within protection scope of the present invention.Four corner of the present invention is provided by claims and any equivalent thereof.
Claims (12)
1. edible oil acid stripping method or a kind of method reducing edible oil acid value, wherein add solid alkali and carry out depickling.
2. method according to claim 1, is characterized in that any one in the item of following (1) to (4) or multinomial:
(1) described solid alkali is solid calcium hydroxide; Particularly, be calcium hydroxide powder; More specifically, be the calcium hydroxide powder of drying;
(2), when adding solid alkali, crude oil temperature is 35 DEG C-80 DEG C; Be preferably 40 DEG C-60 DEG C; Be more preferably 45 DEG C-50 DEG C;
(3) amount that described solid alkali adds is the 0.005%-0.1% of crude quality; Be preferably 0.015%-0.07%; Be more preferably 0.025%-0.05%;
(4) feed postition of solid alkali is directly add in the crude oil in stirring.
3. method according to claim 1, wherein, before adding solid alkali, afterwards or simultaneously, adds flocculating aids and/or peanut cake powder.
4. method according to claim 3, is characterized in that following 1) to 6) any one in item or multinomial:
1) described flocculating aids and peanut cake powder add simultaneously or successively;
2) amount that described flocculating aids adds is the 0.05%-2% of crude quality; Be preferably 0.1%-1%; Be more preferably 0.2%-0.4%;
3) feed postition of flocculating aids and/or peanut cake powder is for directly to add;
4) amount that peanut cake powder adds is the 0.01%-1% of crude quality; Particularly, be 0.15%-0.4%;
5) described peanut cake powder be peanut hot pressing squeeze after residual solids cake ground-slag broken after powder;
6) water ratio of described peanut cake powder is 10%-75%; Be preferably 30%-60%; Be more preferably 45%-55%.
5. prepare a method for edible oil, comprise edible oil acid stripping method according to any one of Claims 1-4 or reduce the method for edible oil acid value.
6. the method preparing edible oil according to claim 5, it also comprises the step that de-soap filters; Particularly, the oil temperature that described de-soap filters is 30 DEG C-45 DEG C; Be preferably 35 DEG C-38 DEG C.
7. the method preparing edible oil according to claim 6, it also comprises the steps:
Oil after depickling and de-soap being filtered continues to stir, and continues cooling and carry out filtration of coming unstuck after adding flocculating aids, obtained edible oil; Particularly, the temperature of filtering of coming unstuck described in is 17 DEG C-25 DEG C; Be preferably 18 DEG C-22 DEG C; Be more preferably 19 DEG C-21 DEG C.
8. an edible oil, its method preparing edible oil according to any one of claim 5 to 7 obtains.
9. a peanut cake powder, its water ratio is 10%-75%; Be preferably 30%-60%; Be more preferably 45%-55%; Particularly, the particle diameter of described peanut cake powder or median size are for being less than or equal to 1mm; Preferably, described peanut cake powder be peanut hot pressing squeeze after residual solids cake ground-slag broken after powder.
10. a composition, it comprises peanut cake powder according to claim 9 and flocculating aids, and optional calcium hydroxide; Particularly, described flocculating aids is be selected from one or more of perlite, diatomite, atlapulgite, attapulgite, gac and Magnesium Silicate q-agent; More specifically, be perlite and/or diatomite; Preferably, wherein the mass ratio of peanut cake powder and flocculating aids is 1:(0.5-2), be more preferably 1:(1-1.5).
11. peanut cake powder according to claim 9 or composition according to claim 10 are preparing the purposes in edible oil, edible oil depickling reagent or edible oil filtration medium.
12. edible oil acid stripping methods according to any one of claim 1 to 4 or reduce the method for edible oil acid value, the method preparing edible oil according to any one of claim 5 to 7, edible oil according to claim 8, claims require peanut cake powder described in 9 or composition according to claim 10 or purposes according to claim 11, wherein, described edible oil is vegetables oil; Particularly, be peanut oil.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106118873A (en) * | 2016-06-21 | 2016-11-16 | 江苏长生缘生物科技有限公司 | A kind of edible oil dehydration degumming deacidification complexing agent and using method thereof |
| CN110184120A (en) * | 2019-05-20 | 2019-08-30 | 李科成 | A kind of preparation method of edible oil depickling processing particle |
| CN113831963A (en) * | 2020-12-30 | 2021-12-24 | 丰益(上海)生物技术研发中心有限公司 | Auxiliary filtering medium and preparation method thereof |
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| CN110184120A (en) * | 2019-05-20 | 2019-08-30 | 李科成 | A kind of preparation method of edible oil depickling processing particle |
| CN113831963A (en) * | 2020-12-30 | 2021-12-24 | 丰益(上海)生物技术研发中心有限公司 | Auxiliary filtering medium and preparation method thereof |
| CN113831963B (en) * | 2020-12-30 | 2024-04-02 | 丰益(上海)生物技术研发中心有限公司 | Auxiliary filtering medium and preparation method thereof |
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