CN103005013B - Zero trans fat acid corn oil and refining process thereof - Google Patents
Zero trans fat acid corn oil and refining process thereof Download PDFInfo
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Abstract
The invention provides zero trans fat acid corn oil and a refining process thereof. The appropriate processing of corn oil is achieved through the processes of alkali refining, dewaxing, decolorizing, deodorizing and packing of crude corn oil to produce the zero trans fat acid corn oil. The refining process is characterized in that the corn oil is decolorized after being dewaxed, and the decolorized corn oil is deodorized, wherein the dewaxing procedure adopts a corn oil tubular continuous dewaxing technology, and the deodorizing procedure adopts a dual-temperature and dual-tower deodorizing technology. The zero trans fat acid corn oil has the advantages that the trans fat acid content is less than or equal to 0.3%, the Vitamin E content is larger than or equal to 1,000 mg/kg, the phytosterol content is larger than or equal to 10,000 mg/kg, any chemical synthesis antioxidants and nutrition enhancers are not added, and the corn oil is more nutritious and safer and is beneficial to long-term health of people.
Description
Technical field
The invention belongs to the corn oil manufacture field, relate in particular to a kind of zero trans-fat acid corn oil and refinery practice thereof.
Background technology
Along with the progress of technology, the quality of corn oil mostly meets national standard, and quality problems are resolved, but there is all many-sided hidden danger in nutrition problem.On the one hand, in the corn oil made with traditional oil-producing technique, there is content of trans fatty acids higher, trans fats are that vegetable oil is through producing in part hydrogenation treatment process, the trans-fatty acid height can elevating blood cholesterol levels, cause the generation of angiocardiopathy, increase blood viscosity and cohesiveness, promote thrombosis, improve low-density lipoprotein, namely " bad lipoprotein ", reduce HDL, namely " good lipoprotein ", promote artery sclerosis, promote the generation of diabetes B, concerning the infant, trans-fatty acid also can affect and grow, and development of central nervous system is produced to harmful effect, there is the phenomenon of overprocessing in existing general refining of maize oil technique on the other hand, the addition that is mainly manifested in carclazyte increases, the temperature of decolouring, deodorization procedures is high, time is long etc., overrefinement not only can cause the waste of resource and the energy, the aggravation environmental pollution, cause the grease loss, causes the loss (such as vitamin E, sterol content) of the nutrient of corn oil own simultaneously.
Summary of the invention
The object of the invention is to, provide a kind of zero trans-fat acid corn oil and refinery practice thereof for above present situation, realize the appropriateness processing of corn oil by the alkali refining to corn crude oil, dewaxing, decolouring, deodorization, nitrogen-filled packaging technology etc., produce the corn oil of zero trans-fat acid, the content of trans-fatty acid≤0.3% wherein, content of vitamin E >=1000 mg/kg, content of phytosterol >=10000 mg/kg, the reservation of maximum possible the nutritional labeling in corn oil.Above-mentioned zero trans-fat acid corn oil, preferably: wherein content of trans fatty acids is≤0.3%; Content of vitamin E is 1000mg/kg-1200mg/kg; Content of phytosterol 10000 mg/kg-11000 mg/kg.
The present invention for achieving the above object, is achieved through the following technical solutions:
A kind of zero trans-fat acid corn oil, content of trans fatty acids≤0.3% wherein, content of vitamin E >=1000 mg/kg, content of phytosterol >=10000 mg/kg.
Content of trans fatty acids in above-mentioned corn oil≤0.3%, content of vitamin E 1000mg/kg-1200mg/kg, content of phytosterol 10000 mg/kg-11000 mg/kg.
The refinery practice of above-mentioned a kind of zero trans-fat acid corn oil, the alkali refining that comprises corn crude oil, dewaxing, decolouring, deodorization, packing technique.Characteristics are that the corn oil after the corn oil after dewaxing is decoloured, decolours carries out deodorization, and the operation that wherein dewaxes adopts the continuous DEWAXING TECHNIQUE of corn oil tubular type, deodorization procedures to adopt two warm double tower deodorization techniques.
The refinery practice of above-mentioned zero trans-fat acid corn oil, its detailed step is:
(1) in alkali refining process, at first by corn heating crude oil to 30 ℃-50 ℃, add again the food grade phosphoric acid that concentration is 70%-80%, described food grade phosphoric acid accounts for 0.05%-0.2% of the former weight of oil of corn, acid treatment 20-30min, carry out neutralization reaction through acid-treated mixture and alkali lye, 10 ° of B é-20 of concentration of lye ° B é, reaction time 10-15min, carry out centrifugation;
(2) tubular type dewaxes continuously, corn oil after alkali refining carries out the crystallization dewaxing by 12 crystallizers, its detailed process is that the corn oil after alkali refining enters first crystallizer by pump, then pass through successively remaining crystallizer by the overflow effect, crystallizer outsourcing condenser coil is lowered the temperature, make oil temperature progressively be reduced to 4-6 ℃, be incubated and within 3.5-4.5 hour, carry out crystallization, growing the grain, then oil temperature is risen to 15-20 ℃ and filtered;
Dewaxing technique all generally has that crystallization time is long, production efficiency is low, energy consumption is high, cooling time is short, floor space is large, invest large problem.The present invention improves in the dewaxing operation, improve dewaxing device, adopt tubular type to dewax continuously, crystallization, rearing crystal time are short, crystal grain is neatly even, do not need whole dewaxing workshop to keep very low temperature, dewaxing effect is obvious, good product quality, production efficiency is high, the plurality of advantages such as equipment investment is little, and floor space is little, and energy consumption is low;
(3) the decolouring stage, the corn oil after dewaxing pumps into bleaching tower and is decoloured, 115 ℃-120 ℃ of bleaching temperatures, the addition of atlapulgite is that oil is heavy by 2.5%, and bleaching time is 20-30min, and pressure is 0.010 mpa-0.015mpa, filter carclazyte, obtain bleached oil;
(4) two temperature double tower deodorization, bleached oil pumps into packed tower by pump by oil-in, 200 ℃-220 ℃ of packed tower temperature, deodorization time 10-20min, remove the volatile materials such as aliphatic acid and hydro carbons, aldehydes, and oil enters plate column by the gravity current of self, 200 ℃-215 ℃ of plate column temperature, steam stripping 10-30min carries out the temperature-sensitive decolouring, enters packed tower by pump afterwards again and stops 10-15min, and 220 ℃-250 ℃ of temperature are carried out secondary and removed aliphatic acid;
The present invention takes appropriate measures in deodorization procedures, reduces deodorization temperature, reduces deodorization time, carries out twice depickling processing, removes the aliphatic acid in corn oil.The nutritional labelings such as sterol in corn oil and natural VE have been retained.
(5) nitrogen-filled packaging
Nitrogen-filled packaging is to pour nitrogen in oil drum, then squeezes into oil in oil drum, and it can reduce contacting of product oil and air to greatest extent, prevents corn oil and air generation oxidation reaction, guarantees the stability of corn oil.
Beneficial effect of the present invention is:
(1) provide a kind of refinery practice of zero trans-fat acid corn oil, made content of trans fatty acids in corn oil≤0.3%, do not added any chemical synthesis antioxidant and nutrition fortifier, more Ensure Liquid, safety, the long-range health of useful masses simultaneously.
(2) adopt the continuous DEWAXING TECHNIQUE of tubular type, this technology is progressively to complete crystallization, growing the grain in flooding process, realizes being dewaxed and entirely being dewaxed continuously by batch (-type).The plurality of advantages such as this technology has crystallization, rearing crystal time is short, and crystal grain is neatly even, and dewaxing effect is obvious, and production efficiency is high, and equipment investment is little, and floor space is little, and energy consumption is low.
(3) adopt two warm double tower deodorization techniques, reduced deodorization temperature, shortened deodorization time.Making content of trans fatty acids in corn oil is zero, is of value to consumer's health.
(4) sterol and the vitamin E in corn oil, content of vitamin E >=1000 mg/kg, content of phytosterol >=10000 mg/kg have been retained to greatest extent.
(5) this technological operation is succinct, has reduced the waste of resource and the energy, has improved economic benefit.
The accompanying drawing explanation
The aliphatic acid component color spectrogram that Fig. 1 is the embodiment of the present invention 1 refining product oil;
The aliphatic acid component color spectrogram that Fig. 2 is the embodiment of the present invention 2 refining product oils;
The aliphatic acid component color spectrogram that Fig. 3 is the embodiment of the present invention 3 refining product oils
The specific embodiment
Below in conjunction with the specific embodiment, the present invention is further described, so that those skilled in the art more understands the present invention, but with this, does not limit the present invention.
In alkali refining process, at first by corn heating crude oil to 40 ℃, then add the food grade phosphoric acid that concentration is 75%, account for 0.05%-0.2% of oil mass, acid treatment 20min, carry out neutralization reaction through acid-treated mixture and alkali lye, concentration of lye 15B é, in 15 minutes reaction time, carry out centrifugation.Adopt tubular type to dewax continuously, corn oil after alkali refining carries out the crystallization dewaxing by the brilliant body of 12 root knots, its detailed process is that the corn oil after alkali refining enters first crystallizer by pump, then pass through successively remaining crystallizer by the overflow effect, crystallizer outsourcing condenser coil, the temperature of oil progressively is reduced to 5 ℃, is incubated 4 hours and carries out crystallization, growing the grain, then oil temperature is risen to 20 ℃ and is filtered.Corn oil after dewaxing pumps into bleaching tower and is decoloured, 118 ℃ of bleaching temperatures, and the addition of atlapulgite is that oil is heavy by 2.5%, and bleaching time is 25min, and pressure is 0.010 mpa, filters carclazyte, obtains bleached oil.The deodorization stage adopts two warm double tower deodorizations, bleached oil pumps into packed tower, 220 ℃ of packed tower temperature, deodorization time 15min, remove the volatile materials such as aliphatic acid and hydro carbons, aldehydes, oil enters plate column by the gravity current of self, 210 ℃ of plate column temperature, steam stripping 30min carries out the temperature-sensitive decolouring, enters afterwards packed tower again and stops 13min, 230 ℃ of temperature are carried out secondary and are removed aliphatic acid, obtain deodorised oil.Deodorised oil is cooling through interchanger, and temperature is down to room temperature and is carried out filling.Pour nitrogen in filling forward direction oil drum, then squeeze into oil in oil drum.It can reduce contacting of product oil and air to greatest extent, prevents corn oil and air generation oxidation reaction.Product oil is carried out to the index detection, and result is as follows: content of trans fatty acids 1.45; Content of vitamin E 1080 mg/kg; Content of phytosterol 10185 mg/kg; Color and luster (133.4mm cell) Y10R1.0; Acid value 0.12mgKOH/g.
Aliphatic acid component color spectrogram is shown in Fig. 1, the results are shown in Table 1:
In alkali refining process, at first by corn heating crude oil to 40 ℃, then add the food grade phosphoric acid that concentration is 75%, account for 0.05%-0.2% of oil mass, acid treatment 25min, carry out neutralization reaction through acid-treated mixture and alkali lye, concentration of lye 15B é, in 10 minutes reaction time, carry out centrifugation.Adopt tubular type to dewax continuously, corn oil after alkali refining carries out the crystallization dewaxing by the brilliant body of 12 root knots, its detailed process is that the corn oil after alkali refining enters first crystallizer by pump, then pass through successively remaining crystallizer by the overflow effect, crystallizer outsourcing condenser coil, the temperature of oil progressively is reduced to 5 ℃, is incubated 4 hours and carries out crystallization, growing the grain, then oil temperature is risen to 20 ℃ and is filtered.Corn oil after dewaxing pumps into bleaching tower and is decoloured, 115 ℃ of bleaching temperatures, and the addition of atlapulgite is that oil is heavy by 2.5%, and bleaching time is 30min, and pressure is 0.012 mpa, filters carclazyte, obtains bleached oil.The deodorization stage adopts two warm double tower deodorizations, bleached oil is pumped into to packed tower, 200 ℃ of packed tower temperature, deodorization time 20min, remove the volatile materials such as aliphatic acid and hydro carbons, aldehydes, oil enters plate column by the gravity current of self, 200 ℃ of plate column temperature, steam stripping 30min carries out the temperature-sensitive decolouring, enters afterwards packed tower again and stops 10min, 220 ℃ of temperature are carried out secondary and are removed aliphatic acid, obtain deodorised oil.Deodorised oil is cooling through interchanger, and temperature is down to room temperature and is carried out filling.Pour nitrogen in filling forward direction oil drum, then squeeze into oil in oil drum.It can reduce contacting of product oil and air to greatest extent, prevents corn oil and air generation oxidation reaction.Product oil is carried out to the index detection, and result is as follows: content of trans fatty acids 0.2%; Content of vitamin E 1100 mg/kg; Content of phytosterol 10872 mg/kg; Color and luster (133.4mm cell) Y10R1.0; Acid value 0.12mgKOH/g.Aliphatic acid component color spectrogram is shown in Fig. 2, the results are shown in Table 2:
In alkali refining process, at first by corn heating crude oil to 40 ℃, then add the food grade phosphoric acid that concentration is 75%, account for 0.05%-0.2% of oil mass, acid treatment 30min, carry out neutralization reaction through acid-treated mixture and alkali lye, concentration of lye 15B é, in 10 minutes reaction time, carry out centrifugation.Adopt tubular type to dewax continuously, corn oil after alkali refining carries out the crystallization dewaxing by the brilliant body of 12 root knots, its detailed process is that the corn oil after alkali refining enters first crystallizer by pump, then pass through successively remaining crystallizer by the overflow effect, crystallizer outsourcing condenser coil, the temperature of oil progressively is reduced to 5 ℃, is incubated 4 hours and carries out crystallization, growing the grain, then oil temperature is risen to 20 ℃ and is filtered.Corn oil after dewaxing pumps into bleaching tower and is decoloured, 120 ℃ of bleaching temperatures, and the addition of atlapulgite is that oil is heavy by 2.5%, and bleaching time is 20min, and pressure is 0.015 mpa, filters carclazyte, obtains bleached oil.The deodorization stage adopts two warm double tower deodorizations, bleached oil pumps into packed tower, 215 ℃ of packed tower temperature, deodorization time 20min, remove the volatile materials such as aliphatic acid and hydro carbons, aldehydes, oil enters plate column by the gravity current of self, 215 ℃ of plate column temperature, steam stripping 30min carries out the temperature-sensitive decolouring, enters afterwards packed tower again and stops 15min, 250 ℃ of temperature are carried out secondary and are removed aliphatic acid, obtain deodorised oil.Deodorised oil is cooling through interchanger, and temperature is down to room temperature and is carried out filling.Pour nitrogen in filling forward direction oil drum, then squeeze into oil in oil drum.It can reduce contacting of product oil and air to greatest extent, prevents corn oil and air generation oxidation reaction.Product oil is carried out to the index detection, and result is as follows: content of trans fatty acids 1.45; Content of vitamin E 1050 mg/kg; Content of phytosterol 10237 mg/kg; Color and luster (133.4mm cell) Y9R0.9; Acid value 0.09mgKOH/g.Aliphatic acid component color spectrogram is shown in Fig. 3, the results are shown in Table 3:
Claims (2)
1. the refinery practice of zero trans-fat acid corn oil is characterized in that: comprise the following steps:
(1) alkali refining process: at first by corn heating crude oil to 30 ℃-50 ℃, add again the food grade phosphoric acid that concentration is 70%-80%, described food grade phosphoric acid accounts for 0.05%-0.2% of the former weight of oil of corn, acid treatment 20-30min, carry out neutralization reaction through acid-treated mixture and alkali lye, 10 ° of B é-20 of concentration of lye ° B é, reaction time 10-15min, carry out centrifugation;
(2) tubular type dewaxes continuously: the corn oil after alkali refining carries out the crystallization dewaxing by 12 crystallizers successively, its detailed process is that the corn oil after alkali refining pumps into first crystallizer, then pass through successively remaining crystallizer by the overflow effect, crystallizer outsourcing condenser coil is lowered the temperature, make oil temperature progressively be reduced to 4-6 ℃, be incubated and within 3.5-4.5 hour, carry out crystallization, growing the grain, then oil temperature is risen to 15-20 ℃ and filtered;
(3) the decolouring stage: the corn oil after dewaxing pumps into bleaching tower and is decoloured, 115 ℃-120 ℃ of bleaching temperatures, and the addition of atlapulgite is that oil is heavy by 2.5%, bleaching time is 20-30min, pressure is 0.010 MPa-0.015MPa, filters carclazyte, obtains bleached oil;
(4) two temperature double tower deodorization: bleached oil pumps into packed tower, 200 ℃-220 ℃ of packed tower temperature, deodorization time 10-20min, remove the volatile materials such as aliphatic acid and hydro carbons, aldehydes, oil in packed tower is entered to plate column by self gravitation, 200 ℃-215 ℃ of plate column temperature, steam stripping 10-30min carries out the temperature-sensitive decolouring, enter afterwards packed tower again and stop 10-15min, 220 ℃-250 ℃ of temperature are carried out secondary and are removed aliphatic acid;
(5) nitrogen-filled packaging;
Content of trans fatty acids≤0.3% in above-mentioned obtained corn oil product, content of vitamin E >=1000 mg/kg, content of phytosterol >=10000 mg/kg.
2. a kind of zero trans-fat acid corn oil according to claim 1, it is characterized in that: content of trans fatty acids≤0.3% in the corn oil product obtained, content of vitamin E 1000mg/kg-1200mg/kg, content of phytosterol 10000 mg/kg-11000 mg/kg.
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| CN1261030C (en) * | 2003-09-12 | 2006-06-28 | 高元财 | Process for producing corn germ oil and table oil made by products produced thereby |
| CN101564063A (en) * | 2008-04-24 | 2009-10-28 | 邹平三星油脂工业有限公司 | Corn oil with high vitamin E and phytosterin contents and production method thereof |
| CN101536711A (en) * | 2009-04-14 | 2009-09-23 | 江南大学 | Deodorizing method for reducing trans-fatty acid content in vegetable oil |
| CN102273522B (en) * | 2010-06-13 | 2013-04-24 | 深圳南顺油脂有限公司 | Edible vegetable oil with lower trans fatty acid and refining method thereof |
| CN102204597B (en) * | 2011-05-31 | 2013-03-20 | 山东西王食品有限公司 | Health-care corn oil and preparation process thereof |
| CN102293264B (en) * | 2011-07-04 | 2013-03-27 | 山东渤海实业股份有限公司 | Moderately processed vegetable oil and preparation method thereof |
| CN102517142B (en) * | 2011-12-20 | 2014-02-05 | 山东渤海实业股份有限公司 | Zero trans-fatty acid multi-vitamin first-grade soybean oil and preparation method thereof |
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Address after: Shandong Samsung Corn Industry Technology Co., Ltd., Private Technology Park, Handian Town, Zouping County, Binzhou City, Shandong Province, 256209 Patentee after: longevity flower food co., ltd. Address before: Shandong Samsung Corn Industry Technology Co., Ltd., Private Technology Park, Handian Town, Zouping County, Binzhou City, Shandong Province, 256209 Patentee before: SHANDONG SANXING CORN INDUSTRY TECHNOLOGY Co.,Ltd. |