CN105154223A - Rice bran oil - Google Patents
Rice bran oil Download PDFInfo
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- CN105154223A CN105154223A CN201510522531.1A CN201510522531A CN105154223A CN 105154223 A CN105154223 A CN 105154223A CN 201510522531 A CN201510522531 A CN 201510522531A CN 105154223 A CN105154223 A CN 105154223A
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Abstract
The invention discloses rice bran oil. Oryzanol accounts for 0.5%-2.0% of the rice bran oil in percentage by mass, triglyceride I accounts for 16%-24% of the rice bran oil in percentage by mass, a molecule of the triglyceride I contains one unsaturated fatty acid and two saturated fatty acids, triglyceride II accounts for 40%-60% of the rice bran oil in percentage by mass, a molecule of the triglyceride II contains one saturated fatty acid and two unsaturated fatty acids, triglyceride III accounts for 24%-36% of the rice bran oil in percentage by mass, and a molecule of the triglyceride III contains three unsaturated fatty acids. The content of the oryzanol, accounting for at least more than 85% of the content of rice bran crude oil, in the physically refined rice bran oil is reserved.
Description
Technical field
The invention belongs to vegetable oil and fat refining technical field, relate to a kind of Rice pollard oil.
Background technology
Rice pollard oil, also known as Rice oil, is that the by product rice skin produced in the white course of processing rolled over by rice, obtains crude oil, the product then obtained after further refining (physical refining or chemical refining) process through squeezing or extract technology.Because its lipid acid composition is reasonable, and the lipid such as the vitamin-E contained, sterol, thiaminogen are conducive to the absorption of human body, there is the cholesterol removed in blood, reduce blood fat, promote the beneficial effects such as growth in humans's growth, and become the nutrient health oil of generally acknowledging both at home and abroad.Current Rice pollard oil has been subject to the extensive concern of countries in the world, becomes another after sunflower seed oil, Fructus Maydis oil
noveledible oil.
It is worth mentioning that, thiaminogen is a characteristic index of Rice pollard oil, and in Rice bran crude oil, the content of thiaminogen is about 2.5%.Thiaminogen is a kind of natural mixture formed based on the orizanol of the orizanol of ring jackfruit alcohols and sterols, is a kind of specific nutrient existed in Rice pollard oil.It has the functions such as reducing blood-fat, anti-cholesterol absorption, preventing cardiovascular disease, can to lack of proper care the effect that taediumvitae, the sense of fatigue brought be improved and alleviate to body rhythms simultaneously, also can improve sleep quality.
There is fat hydrolase in rice bran, and in the preservation process of rice bran, fat hydrolase is in active condition all the time, when external conditions is suitable for, fat splitting contained in rice bran can be become lipid acid and glycerine by short notice.Due to the restriction of working condition and production cost, transport particularly between the rice bran place of production and Rice pollard oil manufacturing and processing enterprise and the restriction of shelf-time, rice bran does not carry out going out ferment treatment in preservation process, the Rice bran crude oil Free Fat acid content that enterprise is produced is very high, acid number reaches more than 20mgKOH/g, and what have even reaches 50 ~ 60mgKOH/g.Grease free fatty acid too high levels not only can produce the local flavor that irritating smell affects grease, but also causes the acceleration of neutral grease hydrolysis to become sour further.Therefore, high acid value Rice bran crude oil is needed to process to reduce acid number to it., for the refining of peracid value rice bran oil, all there is the problem that loss is too high in the traditional methods such as alkali-refining deacidification conventional in oil prodution industry and physical deacidification.Especially chemical refining, also can cause a large amount of losses of the nutritive ingredient such as thiaminogen in grease, the nutritional quality of grease is declined.
The researcher in grease field has carried out fixed lipase catalyzed esterification deacidification of Chinese to the Rice pollard oil of high acid value, and under the reaction conditions after optimization, acid number can drop to about 4mgKOH/g by 20 ~ 40mgKOH/g.Ye You research team has carried out the process optimization of rice bran miscella refining, can reach the effect improving Rice pollard oil color and luster, reduce acid value.But current research is also only limitted to laboratory stage, the higher and reaction times of the price due to immobilized enzyme, longer being difficult to was transformed in production; And miscella refining technique is owing to introducing in production line by solvent, anti-hazard classification for workshop and refining unit requires to improve, facility investment is large, and production management especially security control requirement harshness, in addition, solvent residual is also a potential food safety hazard factor, so, at present miscella refining is used for Workshop Production not yet ripe for opportunity.
For these reasons, the Rice pollard oil that China adopts conventional grease complete processing to produce, except small part Rice pollard oil raw material can be processed into grade rice bran oil, overwhelming majority Rice pollard oil raw material is processed to level Four Rice pollard oil, due to the conventional process techniques quite backwardness of current Rice pollard oil processing industry, cause that whole Rice pollard oil processing industry tooling cost is high, unstable product quality, product yield are low, and a large amount of waste water of Rice pollard oil processing enterprise alkali refining, the generation of washing workshop section, certain harm be also result in local resident's life and ecotope.
Along with the development of economic society and the raising of living standards of the people, the nutrient health eaten more and more is subject to pursuing of people, and China human consumer is also more and more vigorous for the demand of high-quality Rice pollard oil.But by the restriction of traditional Rice pollard oil complete processing, the Rice pollard oil of high-quality is especially rich in the limits throughput of the Rice pollard oil of thiaminogen, cannot meet the need of market.Commonly thiaminogen content is at the Rice pollard oil of 3000ppm or 7000ppm in the market, but its color and luster is general comparatively dark, does not reach the lustre index of GB primary oil.
Summary of the invention
The object of this part is some aspects of general introduction embodiments of the invention and briefly introduces some preferred embodiments.May do in the specification digest and denomination of invention of this part and the application a little simplify or omit with avoid making this part, specification digest and denomination of invention object fuzzy, and this simplification or omit and can not be used for limiting the scope of the invention.
In view of Problems existing in above-mentioned and/or existing rice bran oil product, propose the present invention.
Therefore, the object of the invention is, a kind of Rice pollard oil that can reach the lustre index of GB primary oil is provided.
For solving the problems of the technologies described above, according to an aspect of the present invention, the invention provides following technical scheme: a kind of Rice pollard oil, wherein, Rice pollard oil mass percent shared by thiaminogen is 0.5 ~ 2.0%, containing a unsaturated fatty acids in molecule, Rice pollard oil mass percent shared by the tri-glyceride of two saturated fatty acids is 16 ~ 24%, containing a saturated fatty acid in molecule, shared by the tri-glyceride of two unsaturated fatty acids compositions, Rice pollard oil mass percent is 40 ~ 60%, shared by tri-glyceride containing three unsaturated fatty acidss in molecule, Rice pollard oil mass percent is 24 ~ 36%.
As a kind of preferred version of Rice pollard oil of the present invention, wherein: described thiaminogen composition comprises 24-methylene radical γ-oryzanol, methylene radical γ-oryzanol, campesterol ferulic acid ester, γ-oryzanol, β-sterol ferulate, ring rice bran alcohol ferulic acid ester.
As a kind of preferred version of Rice pollard oil of the present invention, wherein: described saturated fatty acid is palmitinic acid and stearic acid.
As a kind of preferred version of Rice pollard oil of the present invention, wherein: described unsaturated fatty acids is oleic acid, linoleic acid plus linolenic acid.
As a kind of preferred version of Rice pollard oil of the present invention, wherein: mass percent shared by described saturated fatty acid is 13 ~ 24%.
As a kind of preferred version of Rice pollard oil of the present invention, wherein: shared by described oleic acid, mass percent is 35 ~ 49%, mass percent shared by linolic acid is 28 ~ 43%, and mass percent shared by linolenic acid is 0.5 ~ 3.0%.
As a kind of preferred version of Rice pollard oil of the present invention, wherein: its color and luster by lovibond test 133.4 millimeters of grooves, red≤4.0, yellow≤35.
As a kind of preferred version of Rice pollard oil of the present invention, wherein: its color and luster by lovibond test 133.4 millimeters of grooves, 1.4≤red≤3.2,15≤yellow≤32.
The present invention's content of thiaminogen in the Rice pollard oil of physical refining at least retains more than 85% of Rice bran crude oil content; In addition the unsaturated oleic acid in Rice pollard oil, linoleic acid plus linolenic acid content are up to more than 80%.Rice pollard oil involved in the present invention is high-quality grade rice bran oil product, is obtained by physical refining, and this product can provide high quality raw material for medicine, food, foodstuff additive etc., and a new approach is opened up in the applied research for China's rice bran resource.Characteristic feature of the present invention is that thiaminogen content high (0.5 ~ 2.0%), lighter color (133.4 millimeters of grooves, R≤4.0, Y≤35), peroxide value low (<2mmol/kg) and lipid acid composition is reasonable.
Embodiment
For enabling above-mentioned purpose of the present invention, feature and advantage become apparent more, are described in detail below to the specific embodiment of the present invention.
Set forth a lot of detail in the following description so that fully understand the present invention, but the present invention can also adopt other to be different from alternate manner described here to implement, those skilled in the art can when without prejudice to doing similar popularization when intension of the present invention, therefore the present invention is by the restriction of following public specific embodiment.
Secondly, alleged herein " embodiment " or " embodiment " refers to special characteristic, structure or the characteristic that can be contained at least one implementation of the present invention.Different local in this manual " in one embodiment " occurred not all refers to same embodiment, neither be independent or optionally mutually exclusive with other embodiments embodiment.
The present invention in the following embodiments, analyzes according to as follows to the detection of product component and grease color:
The detection of thiaminogen
With reference to the measuring method of Q/CYWMW0100-2013 Rice pollard oil thiaminogen
The detection of grease color
With reference to the mensuration of GB/T22460-2008 animal-plant oil Lovibond color and luster.
Containing one, the mensuration of the triglyceride content of two or three unsaturated fatty acidss in molecule
With reference to ISO18395-2005Animalandvegetablefatsandoils--Determinatio nofmonoacylglycerols, diacylglycerols, triacylglycerolsandglycerolbyhigh-performancesize-exclus ionchromatography (HPSEC).
The detection of vegetable fatty acid content, the preparation of fatty acid methyl ester
With reference to the preparation of GB/T17376-2008 animal-plant oil fatty acid methyl ester.
The gas chromatographic analysis of fatty acid methyl ester
With reference to the gas chromatographic analysis of GB/T17377-2008 animal-plant oil Fatty acid methyl ester.
Embodiment 1
The level Four Rice pollard oil of thiaminogen content 1.1% is warmed up to 170 DEG C through interchanger, then molecular still is entered, through distributor uniform distribution in generating surface, the temperature of generating surface is at 245 DEG C, light constituent pigment cools to 42 DEG C through built-in condenser, flow into light constituent holding tank, heavy constituent directly enters heavy constituent holding tank, and the vacuum tightness of decolouring system is at 30Pa.Heavy constituent enters the first step and divides and put forward operation, 250 DEG C are warming up to through interchanger, then enter molecular still to refine, material through distributor uniform distribution in generating surface, the temperature of generating surface is at 310 DEG C, divide the vacuum tightness of system of carrying at 0.1 ~ 1Pa, light constituent cools to 42 DEG C through built-in condenser, flow into work in-process holding tank, heavy constituent directly enters heavy constituent holding tank, then enter second step to divide and put forward operation, 260 DEG C are warming up to through interchanger, enter molecular still to refine, material through distributor uniform distribution in generating surface, the temperature of generating surface is at 320 DEG C, divide the vacuum tightness of system of carrying at 0.1 ~ 0.5Pa, light constituent cools to 35 DEG C through built-in condenser, flow into work in-process holding tank, heavy constituent directly enters heavy constituent holding tank.Two steps divide after proposing two light constituent work in-process mixing, and be warming up to 250 DEG C through interchanger, then enter extracting tower, lead to appropriate superheated vapour at the bottom of extracting tower, vacuum tightness is at 100 ~ 133Pa.Rice bran oil pump after depickling process is in winterization tank, 35 DEG C are warming up under whipped state, then crystallisation stage is entered, 15 DEG C are cooled to the rate of temperature fall of 2 DEG C/h, then cool to 3 DEG C with the rate of temperature fall of 0.5 DEG C/h, enter the growing the grain stage, and in 3 DEG C of constant temperature growing the grain 14h, enter Winterization filter afterwards to filter, filter pressure is not more than 0.2Mpa.The complete i.e. obtained rice finished product oil extracted from rice husks of winterization degreasing, clear appearance, transparent, without precipitate, indices detected result is shown in
table 1.
table 1rice finished product oil extracted from rice husks fat compositional analysis
Note: S-saturated fatty acid; U-unsaturated fatty acids; C16:0-palmitinic acid; C18:0-stearic acid; C18:1-oleic acid; C18:2-linolic acid; C18:3-linolenic acid.
table 2commercially available level Four oil and Rice pollard oil index analysis
Note: S-saturated fatty acid; U-unsaturated fatty acids; C16:0-palmitinic acid; C18:0-stearic acid; C18:1-oleic acid; C18:2-linolic acid; C18:3-linolenic acid.
Embodiment 2
To process the hair Rice pollard oil of thiaminogen content 2.2%, method comprises the steps:
The first step, filters: hair Rice pollard oil is heated to 50 DEG C, pumps into horizontal screw centrifuge with impeller pump, is separated solid phase mechanical impurity.
Second step, dewaxing: by the oil pump after filtration in winterization tank, be warming up to 80 DEG C under whipped state, then crystallisation stage is entered, cool to 25 DEG C with the rate of temperature fall of 4 DEG C/h, enter growing the grain stage constant temperature growing the grain 14h, enter afterwards after Winterization filter filters and namely obtain pressed oil.
3rd step, comes unstuck: in the present embodiment, and the degumming effect of enzymatic degumming is better, and the phosphorus content after enzymatic degumming can be down to the ideal indicator being less than 5ppm; Deacid-deodoring is completed under lesser temps (170 ~ 260 DEG C) condition of high vacuum degree (0.1 ~ 10Pa) and the thermal treatment of short period of time (being no more than for 3 seconds) condition, and under high vacuum (0.1 ~ 10Pa) and the thermal treatment of short period of time (being no more than for 3 seconds) condition, complete grease refine, avoid the generation of the oxidation of grease, partial hydrolysis and hazardous substance (as trans acids, polyglycerol ester etc.).
The Rice pollard oil of dewaxing is warmed up to 65 DEG C, adjustment Rice pollard oil pH value is 6.5, then Phospholipase C is added, reaction 6h, be rapidly heated afterwards to 100 DEG C, the oil after the enzyme that goes out is cooled to rapidly 87 DEG C, add the water that oil weighs the temperature 97 DEG C of 8% again, centrifugation after abundant mixing 20min, removed by aqueous phase, namely the oil after coming unstuck obtain degummed oil after dehydrating under the vacuum condition of 266Pa.
4th step, first process for refining: the oil after coming unstuck is warmed up to 170 DEG C, then short-distance distiller is entered, through distributor uniform distribution in generating surface, the temperature of generating surface is at 225 DEG C, and the first light constituent material cools to 45 DEG C through built-in condenser, flows into the first light constituent holding tank, first heavy constituent material directly enters the first heavy constituent holding tank, and the vacuum tightness of decolouring system is at 40Pa.
5th step, second process for refining: the first heavy constituent material in the first heavy constituent holding tank is warmed up to 250 DEG C, then enter short-distance distiller to refine, first heavy constituent material through distributor uniform distribution in generating surface, the temperature of generating surface is at 290 DEG C, and the second light constituent material cools to 50 DEG C through built-in condenser, flows into the second light constituent holding tank, second heavy constituent material directly enters the second heavy constituent holding tank, and the vacuum tightness of the second process for refining system is at 0.1 ~ 1Pa.
6th step, 3rd process for refining: the second heavy constituent material in the second heavy constituent holding tank is warming up to 260 DEG C, then enter short-distance distiller to refine, second heavy constituent material through distributor uniform distribution in generating surface, the temperature of generating surface is at 300 DEG C, and the 3rd light constituent material cools to 45 DEG C through built-in condenser, flows into the 3rd light constituent holding tank, triple component materials directly enters triple Fraction collection tank, and the vacuum tightness of the 3rd process for refining system is at 0.1 ~ 1Pa.
7th step, 4th process for refining: the triple component materials in triple Fraction collection tank is warming up to 265 DEG C, then enter short-distance distiller to refine, triple component materials through distributor uniform distribution in generating surface, the temperature of generating surface is at 316 DEG C, and the 4th light constituent material cools to 45 DEG C through built-in condenser, flows into the 4th light constituent holding tank, quadruple component materials directly enters quadruple Fraction collection tank, and the vacuum tightness of the 4th process for refining system is at 0.1 ~ 0.5Pa.
8th step, desaturation ester: by the second light constituent material, the 3rd light constituent material and the 4th light constituent substance pump in winterization tank, under whipped state, be warming up to 35 DEG C, then enter crystallisation stage, cool to 15 DEG C with the rate of temperature fall of 2 DEG C/h, then 3 DEG C are cooled to the rate of temperature fall of 0.5 DEG C/h, enter the growing the grain stage, and in 3 DEG C of constant temperature growing the grain 14h, enter Winterization filter afterwards and filter, filter pressure 0.1Mpa, the complete i.e. obtained desaturation ester oil of winterization degreasing.
9th step, deacid-deodoring: desaturation ester oil is pumped into extracting tower, its temperature range is 260 DEG C, and the consumption of open steam is 11 kg/ton raw materials, and vacuum tightness is 266.6Pa.
Get product after deacid-deodoring Rice pollard oil, and its clear appearance, transparent, without precipitate, indices detected result is shown in
table 3.
table 3rice finished product oil extracted from rice husks fat compositional analysis
Note: S-saturated fatty acid; U-unsaturated fatty acids; C16:0-palmitinic acid; C18:0-stearic acid; C18:1-oleic acid; C18:2-linolic acid; C18:3-linolenic acid.
table 4commercially available level Four oil and Rice pollard oil index analysis
Note: S-saturated fatty acid; U-unsaturated fatty acids; C16:0-palmitinic acid; C18:0-stearic acid; C18:1-oleic acid; C18:2-linolic acid; C18:3-linolenic acid.
Embodiment 3
The level Four Rice pollard oil of thiaminogen content 1.5% is warmed up to 165 DEG C through interchanger, then molecular still is entered, through distributor uniform distribution in generating surface, the temperature of generating surface is at 195 DEG C, light constituent pigment cools to 37 DEG C through built-in condenser, flow into light constituent holding tank, heavy constituent directly enters heavy constituent holding tank, and the vacuum tightness of decolouring system is at 20Pa.Heavy constituent enters the first step and divides and put forward operation, 230 DEG C are warming up to through interchanger, then enter molecular still to refine, material through distributor uniform distribution in generating surface, the temperature of generating surface is at 300 DEG C, divide the vacuum tightness of system of carrying at 0.1 ~ 1Pa, light constituent cools to 35 DEG C through built-in condenser, flow into work in-process holding tank, heavy constituent directly enters heavy constituent holding tank, then enter second step to divide and put forward operation, 240 DEG C are warming up to through interchanger, enter molecular still to refine, material through distributor uniform distribution in generating surface, the temperature of generating surface is at 310 DEG C, divide the vacuum tightness of system of carrying at 0.1 ~ 1Pa, light constituent cools to 35 DEG C through built-in condenser, flow into work in-process holding tank, heavy constituent directly enters heavy constituent holding tank.Two steps divide after proposing two light constituent work in-process mixing, and be warming up to 240 DEG C through interchanger, then enter extracting tower, lead to appropriate superheated vapour at the bottom of extracting tower, vacuum tightness is at 266Pa.Rice bran oil pump after depickling process is in winterization tank, 32 DEG C are warming up under whipped state, then crystallisation stage is entered, 15 DEG C are cooled to the rate of temperature fall of 1.5 DEG C/h, then cool to 3 DEG C with the rate of temperature fall of 0.5 DEG C/h, enter the growing the grain stage, and in 3 DEG C of constant temperature growing the grain 14h, enter Winterization filter afterwards to filter, filter pressure is not more than 0.2Mpa.The complete i.e. obtained rice finished product oil extracted from rice husks of winterization degreasing, clear appearance, transparent, without precipitate, indices detected result is shown in
table 5.
table 5rice finished product oil extracted from rice husks fat compositional analysis
Note: S-saturated fatty acid; U-unsaturated fatty acids; C16:0-palmitinic acid; C18:0-stearic acid; C18:1-oleic acid; C18:2-linolic acid; C18:3-linolenic acid.
table 6commercially available level Four oil and Rice pollard oil index analysis
Note: S-saturated fatty acid; U-unsaturated fatty acids; C16:0-palmitinic acid; C18:0-stearic acid; C18:1-oleic acid; C18:2-linolic acid; C18:3-linolenic acid.
Embodiment 4
The level Four Rice pollard oil of thiaminogen content 1.8% is warmed up to 170 DEG C through interchanger, then molecular still is entered, through distributor uniform distribution in generating surface, the temperature of generating surface is at 245 DEG C, light constituent pigment cools to 42 DEG C through built-in condenser, flow into light constituent holding tank, heavy constituent directly enters heavy constituent holding tank, and the vacuum tightness of decolouring system is at 40Pa.Heavy constituent enters the first step and divides and put forward operation, 250 DEG C are warming up to through interchanger, then enter molecular still to refine, material through distributor uniform distribution in generating surface, the temperature of generating surface is at 310 DEG C, divide the vacuum tightness of system of carrying at 0.1 ~ 1Pa, light constituent cools to 42 DEG C through built-in condenser, flow into work in-process holding tank, heavy constituent directly enters heavy constituent holding tank, then enter second step to divide and put forward operation, 260 DEG C are warming up to through interchanger, enter molecular still to refine, material through distributor uniform distribution in generating surface, the temperature of generating surface is at 320 DEG C, divide the vacuum tightness of system of carrying at 0.1 ~ 1Pa, light constituent cools to 35 DEG C through built-in condenser, flow into work in-process holding tank, heavy constituent directly enters heavy constituent holding tank.Two steps divide after proposing two light constituent work in-process mixing, and be warming up to 260 DEG C through interchanger, then enter extracting tower, lead to appropriate superheated vapour at the bottom of extracting tower, vacuum tightness is at 300Pa.Rice bran oil pump after depickling process is in winterization tank, 35 DEG C are warming up under whipped state, then crystallisation stage is entered, 15 DEG C are cooled to the rate of temperature fall of 2 DEG C/h, then cool to 3 DEG C with the rate of temperature fall of 0.5 DEG C/h, enter the growing the grain stage, and in 3 DEG C of constant temperature growing the grain 14h, enter Winterization filter afterwards to filter, filter pressure is not more than 0.2Mpa.The complete i.e. obtained rice finished product oil extracted from rice husks of winterization degreasing, clear appearance, transparent, without precipitate, indices detected result is shown in
table 7.
table 7rice finished product oil extracted from rice husks fat compositional analysis
Note: S-saturated fatty acid; U-unsaturated fatty acids; C16:0-palmitinic acid; C18:0-stearic acid; C18:1-oleic acid; C18:2-linolic acid; C18:3-linolenic acid.
table 8commercially available level Four oil and Rice pollard oil index analysis
Note: S-saturated fatty acid; U-unsaturated fatty acids; C16:0-palmitinic acid; C18:0-stearic acid; C18:1-oleic acid; C18:2-linolic acid; C18:3-linolenic acid.
Embodiment 5
The level Four Rice pollard oil of thiaminogen content 2.0% is warmed up to 155 DEG C through interchanger, then molecular still is entered, through distributor uniform distribution in generating surface, the temperature of generating surface is at 195 DEG C, light constituent pigment cools to 37 DEG C through built-in condenser, flow into light constituent holding tank, heavy constituent directly enters heavy constituent holding tank, and the vacuum tightness of decolouring system is at 5Pa.Heavy constituent enters the first step and divides and put forward operation, 230 DEG C are warming up to through interchanger, then enter molecular still to refine, material through distributor uniform distribution in generating surface, the temperature of generating surface is at 300 DEG C, divide the vacuum tightness of system of carrying at 0.1 ~ 1Pa, light constituent cools to 35 DEG C through built-in condenser, flow into work in-process holding tank, heavy constituent directly enters heavy constituent holding tank, then enter second step to divide and put forward operation, 240 DEG C are warming up to through interchanger, enter molecular still to refine, material through distributor uniform distribution in generating surface, the temperature of generating surface is at 310 DEG C, divide the vacuum tightness of system of carrying at 0.1 ~ 1Pa, light constituent cools to 35 DEG C through built-in condenser, flow into work in-process holding tank, heavy constituent directly enters heavy constituent holding tank.Two steps divide after proposing two light constituent work in-process mixing, and be warming up to 240 DEG C through interchanger, then enter extracting tower, lead to appropriate superheated vapour at the bottom of extracting tower, vacuum tightness is at 133Pa.Rice bran oil pump after depickling process is in winterization tank, 32 DEG C are warming up under whipped state, then crystallisation stage is entered, 15 DEG C are cooled to the rate of temperature fall of 1.5 DEG C/h, then cool to 3 DEG C with the rate of temperature fall of 0.5 DEG C/h, enter the growing the grain stage, and in 3 DEG C of constant temperature growing the grain 14h, enter Winterization filter afterwards to filter, filter pressure is not more than 0.2Mpa.The complete i.e. obtained rice finished product oil extracted from rice husks of winterization degreasing, clear appearance, transparent, without precipitate, indices detected result is shown in
table 9.
table 9rice finished product oil extracted from rice husks fat compositional analysis
Note: S-saturated fatty acid; U-unsaturated fatty acids; C16:0-palmitinic acid; C18:0-stearic acid; C18:1-oleic acid; C18:2-linolic acid; C18:3-linolenic acid.
table 10 commercially available level Four oil and Rice pollard oil index analysis
Note: S-saturated fatty acid; U-unsaturated fatty acids; C16:0-palmitinic acid; C18:0-stearic acid; C18:1-oleic acid; C18:2-linolic acid; C18:3-linolenic acid.
Embodiment 6
The first step: deodorization
The Rice pollard oil that comes unstuck of thiaminogen content 1.6% is warmed up to 130 ~ 160 DEG C through interchanger, then short-distance distiller is entered, through distributor uniform distribution in generating surface, the temperature of generating surface is at 160 ~ 200 DEG C, first light constituent material (i.e. minor amount of water and lower molecular weight lipid acid, hydrocarbon, aldehyde, ketone, superoxide) cools to 5 ~ 25 DEG C through built-in condenser, flow into the first light constituent holding tank, first heavy constituent material directly enters the first heavy constituent holding tank, and the vacuum tightness of deodorizing system is at 0.1 ~ 40Pa;
Second step: depickling is decoloured
Material in first heavy constituent holding tank described in the first step is warmed up to 150 ~ 170 DEG C through interchanger, then short-distance distiller is entered, through distributor uniform distribution in generating surface, the temperature of generating surface is at 190 ~ 225 DEG C, second light constituent material (i.e. free fatty acids and lower molecular weight pigment, such as β-carotene, xenthophylls) cool to 30 ~ 45 DEG C through built-in condenser, flow into the second light constituent holding tank, second heavy constituent material directly enters the second heavy constituent holding tank, and the vacuum tightness of depickling decolouring system is at 0.1 ~ 40Pa;
3rd step: the first process for refining
Material in second heavy constituent holding tank described in second step is warmed up to 230 ~ 250 DEG C through interchanger, then enter short-distance distiller to refine, material through distributor uniform distribution in generating surface, the temperature of generating surface is at 260 ~ 290 DEG C, 3rd light constituent material (being namely rich in palmitinic acid and linoleic sweet three esters) cools to 35 ~ 50 DEG C through built-in condenser, flow into the 3rd light constituent holding tank, triple component materials directly enters triple Fraction collection tank, and the vacuum tightness of the first refining system is at 0.1 ~ 10Pa.
4th step: the second process for refining
Material in triple Fraction collection tank described in 3rd step is warming up to 240 ~ 260 DEG C through interchanger, then enter short-distance distiller to refine, material through distributor uniform distribution in generating surface, the temperature of generating surface is at 290 ~ 300 DEG C, 4th light constituent material (being namely rich in oleic acid and linoleic sweet three esters) cools to 30 ~ 45 DEG C through built-in condenser, flow into the 4th light constituent holding tank, quadruple component materials then directly enters quadruple Fraction collection tank, and the vacuum tightness of the second refining system is at 0.1 ~ 10Pa.
5th step: the 3rd process for refining
Material in quadruple Fraction collection tank described in 4th step is warming up to 245 ~ 265 DEG C through interchanger, then enter short-distance distiller to refine, material through distributor uniform distribution in generating surface, the temperature of generating surface is at 300 ~ 316 DEG C, 5th light constituent material cools to 30 ~ 45 DEG C through built-in condenser, flow into the 5th light constituent holding tank, quintet divides material directly to enter quintet and divides holding tank, and the vacuum tightness of the 3rd refining system is at 0.1 ~ 10Pa.
6th step: desaturation ester
By the product pump in above-mentioned 3rd, the 4th and the 5th light constituent holding tank in winterization tank, 32 ~ 35 DEG C are warming up under whipped state, then crystallisation stage is entered, 12 ~ 15 DEG C are cooled to the rate of temperature fall of 1.5 ~ 2 DEG C/h, then 3 DEG C are cooled to the rate of temperature fall of 0.3 ~ 0.5 DEG C/h, enter the growing the grain stage, and in 3 DEG C of constant temperature growing the grain 14h, enter Winterization filter afterwards to filter, filter pressure is not more than 0.2Mpa, the complete i.e. obtained rice finished product oil extracted from rice husks of winterization degreasing, its clear appearance, transparent, without precipitate, indices detected result is shown in
table 11.
table 11 rice finished product oil extracted from rice husks fat compositional analysis
Note: S-saturated fatty acid; U-unsaturated fatty acids; C16:0-palmitinic acid; C18:0-stearic acid; C18:1-oleic acid; C18:2-linolic acid; C18:3-linolenic acid.
table 12 commercially available level Four oil and Rice pollard oil index analysis
Note: S-saturated fatty acid; U-unsaturated fatty acids; C16:0-palmitinic acid; C18:0-stearic acid; C18:1-oleic acid; C18:2-linolic acid; C18:3-linolenic acid.
Embodiment 7
30 ablactation SD male rat (Southern Yangtze University provides), body weight 85 ~ 112g, be divided into 2 groups at random, often organize 15, comparative group gives normal diet (wheat-flour, Semen Maydis powder, wheat bran, soyflour, fish meal and bone meal) and separately adds the commercially available Rice pollard oil nursing that mass percent is 5%; Experimental group awards adds normal diet (wheat-flour, Semen Maydis powder, wheat bran, soyflour, fish meal and the bone meal) nursing that mass percent is the Rice pollard oil of 5% embodiment 2, feeds 8 weeks.At experiment 8 weekend
Rice pollard oil etherization lower abdominal aorta gets blood in test tube, separation of serum, illustrates measure serum TG, TC serum LDL-C and HDL-C by test kit.
table 13 blood fat change
| Group | TC | TG | LDL-C | HDL-C |
| Comparative group | 1.49±0.24 | 1.02±0.17 | 0.36±0.05 | 0.61±0.09 |
| Rice pollard oil experimental group | 1.37±0.22* | 0.89±0.15* | 0.25±0.03* | 0.81±0.14* |
Note: TC-total cholesterol; TG-triglyceride level; LDL-C-low density lipoprotein cholesterol; HDL-C-high density lipoprotein cholesterol.
Fatty ingredient in food is very large on serum lipid concentrations impact, and after triglyceride level is absorbed, synthetic fat albumen enters body circulation together with cholesterol, phosphatide etc., and synthetic fat in adipocyte also stores.Discharge minimizing owing to taking in excess fat and result in obesity.Experiment proves: our Rice pollard oil edible is few relative to edible commercially available Rice pollard oil body fat accumulation.
It should be noted that, above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technical scheme of the present invention or equivalent replacement, and not departing from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (9)
1. a Rice pollard oil, is characterized in that: wherein,
Rice pollard oil mass percent shared by thiaminogen is 0.5 ~ 2.0%, shared by tri-glyceride containing a unsaturated fatty acids, two saturated fatty acids in molecule, Rice pollard oil mass percent is 16 ~ 24%, shared by tri-glyceride containing a saturated fatty acid, two unsaturated fatty acids compositions in molecule, Rice pollard oil mass percent is 40 ~ 60%, and shared by the tri-glyceride containing three unsaturated fatty acidss in molecule, Rice pollard oil mass percent is 24 ~ 36%.
2. Rice pollard oil as claimed in claim 1, is characterized in that: described thiaminogen composition comprises 24-methylene radical γ-oryzanol, methylene radical γ-oryzanol, campesterol ferulic acid ester, γ-oryzanol, β-sterol ferulate, ring rice bran alcohol ferulic acid ester.
3. Rice pollard oil as claimed in claim 1 or 2, is characterized in that: described saturated fatty acid is palmitinic acid and stearic acid.
4. Rice pollard oil as claimed in claim 1 or 2, is characterized in that: described unsaturated fatty acids is oleic acid, linoleic acid plus linolenic acid.
5. Rice pollard oil as claimed in claim 3, is characterized in that: mass percent shared by described saturated fatty acid is 13 ~ 24%.
6. Rice pollard oil as claimed in claim 4, it is characterized in that: shared by described oleic acid, mass percent is 35 ~ 49%, mass percent shared by linolic acid is 28 ~ 43%, and mass percent shared by linolenic acid is 0.5 ~ 3.0%.
7. the Rice pollard oil as described in as arbitrary in claim 1 ~ 6, is characterized in that: its color and luster by lovibond test 133.4 millimeters of grooves, red≤4.0, yellow≤35.
8. Rice pollard oil as claimed in claim 7, is characterized in that: its color and luster by lovibond test 133.4 millimeters of grooves, 1.4≤red≤3.2,15≤yellow≤32.
9. Rice pollard oil as claimed in claim 1, is characterized in that: Rice pollard oil mass percent shared by thiaminogen is 1 ~ 2.0%.
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| CN109316476A (en) * | 2018-10-15 | 2019-02-12 | 上海宣泰生物科技有限公司 | Modified rice bran alcohol and its preparation method and application |
| CN111606965A (en) * | 2020-05-29 | 2020-09-01 | 宜春大海龟生命科学有限公司 | Method for extracting and purifying oryzanol from rice bran acidification oil |
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