CN112715682A

CN112715682A - Preparation process of corn edible oil

Info

Publication number: CN112715682A
Application number: CN202011400008.9A
Authority: CN
Inventors: 熊涛
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-03-24
Filing date: 2021-03-24
Publication date: 2021-04-30

Abstract

The invention discloses a preparation process of corn edible oil, which comprises the following steps: the method comprises the following steps: mixing corn germ powder and citric acid according to parts by weight, extracting, and evaporating to remove a solvent to obtain corn crude oil; step two: standing and precipitating the crude oil for 40-60 min, filtering by using a filter and performing deodorization treatment; step three: using a stirring tank to bake and fry the whole corn grains at a constant temperature of 50-60 ℃ and putting the corn grains into a squeezer to squeeze out oil; step four: cleaning white sesame and perilla seeds, washing with warm water, air drying, mixing with all the raw materials, stirring, heating to 100-115 ℃, reacting for 1-5 minutes, standing, and air drying to 35-40 ℃. The beneficial effects are that: by utilizing the corn germ powder and the corn whole grains to squeeze the branch type crude oil, the content and the quality of the crude oil in the initial step can be improved, so that the delicacy of process treatment is improved, and the required reaction conditions in the whole preparation process become mild.

Description

Preparation process of corn edible oil

Technical Field

The invention relates to the field of edible oil, and particularly relates to a preparation process of corn edible oil.

Background

Corn oil, namely corn germ oil, is oil prepared from corn germs, is golden in color and fragrant in smell, is rich in unsaturated fatty acid necessary for human bodies, has the content of the unsaturated fatty acid of more than 80 percent, mainly comprises linoleic acid and oleic acid, wherein the linoleic acid accounts for more than 50 percent of the total amount of the oil, the content of the oleic acid is about 30 percent, is also rich in physiological active substances such as phytosterol (the content of the phytosterol reaches 1.1 percent), vitamin E (the content of the vitamin E reaches 0.99 percent) and the like, has high nutritional value, has the absorption rate of up to 97 percent, is recognized healthy edible oil at home and abroad, has the main functions of reducing cholesterol of the human bodies, reducing blood pressure, softening blood vessels, increasing the functions of muscles, hearts and cardiovascular systems of the human bodies, preventing and improving arteriosclerosis, reducing the occurrence of cardiovascular and cerebrovascular diseases and the. With the development of economy, corn oil is bound to become the preferred edible oil for family health, and the trend of high-end and fashionable consumption is led. According to the Chinese patent publication No. CN110358619A, the provided vacuum roasting device for preparing corn oil by pressing whole corn particles avoids the problem that the conventional normal-pressure roasting may produce carcinogenic benzopyrene due to overhigh roasting temperature, thereby effectively ensuring the safety and quality of the corn oil product, but the device only can act on one of the preparation process and cannot obtain better effect of using the corn oil from raw materials and other preparation processes, according to the Chinese patent publication No. CN105875870A, the provided corn oil and the preparation method thereof greatly reduce the aspergillus flavus content, and the produced corn oil keeps the nutrient components unchanged, has pure taste and lasting fragrance, can meet the mild reaction conditions required by people for original-taste and original-flavor special-grade corn oil, is simple to operate and has good application prospect, but it is difficult to ensure the oil yield and the quality of the finished oil, and the preparation process and the materials are difficult to improve the odor, taste and oil yield of the finished oil.

An effective solution to the problems in the related art has not been proposed yet.

Disclosure of Invention

Aiming at the problems in the related art, the invention provides a preparation process of corn edible oil, which aims to overcome the technical problems in the prior related art.

Therefore, the invention adopts the following specific technical scheme:

according to one aspect of the invention, the corn edible oil is provided and comprises the following raw materials in percentage by weight:

35-40% of corn germ powder, 35-40% of corn whole granules, 3-5% of citric acid, 2-3% of cellulase, 2-3% of alpha-amylase, 4-6% of cashew nut oil, 4-6% of rapeseed oil, 5-8% of white sesame, 6-10% of perilla seeds and 2-3% of white spirit.

According to another aspect of the invention, a preparation process of the corn edible oil is provided.

The preparation process of the corn edible oil comprises the following steps:

the method comprises the following steps: mixing corn germ powder and citric acid according to parts by weight, extracting, and evaporating to remove a solvent to obtain corn crude oil;

step two: standing and precipitating the crude oil for 40-60 min, filtering by using a filter and performing deodorization treatment;

step three: using a stirring tank to bake and fry the whole corn grains at a constant temperature of 50-60 ℃ and putting the corn grains into a squeezer to squeeze out oil;

step four: cleaning white sesame and perilla seeds, washing with warm water, drying in the air, mixing with all the raw materials, stirring, heating to 100-115 ℃, reacting for 1-5 minutes, standing and drying to 35-40 ℃;

step five: putting the mixed oil into a centrifuge for separation and filtration, or refining the oil;

step six: heating, distilling and condensing the refined oil to obtain the corn oil.

Further, the corn germ powder is firstly screened, and the screening mesh number is 20-40 meshes.

Further, the white spirit is grain spirit with the alcohol content of more than 48 degrees, and the temperature of the white spirit is heated to 30-40 degrees during preparation.

Further, in the first step, the mixture is subjected to normal pressure steam treatment for 27-30min, cooled, then the pH value is adjusted to 3-6, cellulase and alpha-amylase are added, the mixture is stirred for 4-6h at 40-50 ℃, then enzyme deactivation is carried out for 5-20min at the temperature of 0.1MPa and 126 ℃, the mixture is cooled, centrifugation is carried out for 15-30min at 4000r/min, and supernatant is collected.

Further, in the third step, the whole corn grains are dried before pressing, so that the moisture of the whole corn grains is ensured to be within 4%, and the pressing temperature is more than 100 degrees.

Further, in the second step, before the filter works, edible oil filtering cloth is put on the filter plate, and the filtering is repeated until silt, material blanks, powder and other solid impurities in the crude oil are removed.

Further, in the second step, the filtered crude oil is firstly put into an alkali refining pot for alkali refining to remove free fatty acid; and then putting the mixture into a decoloring tank for decoloring, deodorizing, finally putting the mixture into a washing tank, adding hot water for washing for 2-3 times at the water temperature of 85-95 ℃, and standing for later use.

Further, in the fifth step, the mixture is put into a low-speed centrifuge with the rotating speed of 5000-8000 r/min, after crystal is separated out, the residue is filtered and taken out, the rotating speed is adjusted to 9000-.

Further, in the sixth step, the refined oil is heated to 240-260 ℃ and distilled by superheated steam under the condition of the vacuum degree of 100-200 Pa.

The raw material components adopted by the invention are explained as follows:

corn germ meal: the corn germ is taken as a raw material, and a byproduct is obtained after crushing. Corn is typically soaked, cracked, germ separated, and then ground prior to production of corn starch.

Corn straightening: called maize grains. Fresh corn kernels are solid in taste, like raisins, and fragrant and sweet in taste. The corn kernels are grains suitable for both the old and the young, and the main edible effect is to delay aging.

Citric acid: is an important organic acid, also called citric acid, with a molecular formula of C₆H₈O₇Colorless crystals, often containing one molecule of crystal water, are odorless, have strong sour taste and are easily soluble in water. Its calcium salt is more soluble in cold water than in hot water, a property commonly used to identify and isolate citric acid. The anhydrous citric acid can be obtained by controlling the proper temperature during the crystallization. Has a great number of applications in industry, food industry, cosmetics industry and the like.

Cellulase: the xylanase is a general name of a group of enzymes for degrading cellulose to generate glucose, is not a monomer enzyme, but a multi-component enzyme system with a synergistic effect, is a complex enzyme, mainly comprises exo-beta-glucanase, endo-beta-glucanase, beta-glucosidase and the like, and also has xylanase with high activity. Acting on cellulose and products derived from cellulose. The microbial cellulase has very important significance in the aspects of converting insoluble cellulose into glucose, destroying cell walls in fruit and vegetable juice so as to improve the yield of fruit juice and the like.

Alpha-amylase: the terms are liquefying amylase, liquefying enzyme and alpha-1, 4-dextrinase. Yellow brown solid powder or yellow brown to dark brown liquid, and the water content is 5-8 percent. Soluble in water and insoluble in ethanol or diethyl ether. FAO/WHO specifies, ADI is not particularly limited.

White sesame seeds: is seed of semen Sesami of Pedaliaceae and Pedaliaceae. The white sesame has the advantages of high oil content, white color, full seeds, thin seed coat, good taste, fragrant aftertaste and the like. The white sesame and the product thereof have rich nutrition and anti-aging property.

Perilla seed: is the seed of Perilla frutescens which is a labiatae plant. Can be used as flavoring agent, and has effects of removing fishy smell, increasing freshness, and improving taste. Meanwhile, the traditional Chinese medicine composition has a certain medicinal value and has the effects of descending qi, clearing phlegm, moistening lung and widening intestines. Perilla frutescens is also a highly effective plant "preservative".

The invention has the beneficial effects that: the branched crude oil is extracted by utilizing the corn germ powder and the whole corn grains, the content and the quality of the crude oil in the initial step can be improved, the extraction rate is greatly improved, the purity can be improved, the energy consumption is greatly reduced, in addition, the crude oil and the crude oil can be well distinguished and reacted by respectively filtering, distilling and independently mixing the two crude oils in different modes, the nutrient substance components of the corn oil are well ensured to be unchanged by adding the white spirit, the white sesame and the perilla seeds, the taste is pure, the fragrance is lasting, through the preparation process, the high-temperature stirring of the corn grains is equivalent to the pre-baking and frying and then squeezing of the corn grains, the integral cleanness and sanitation degree are improved, the mildew killing function can be realized, in addition, the content is very high, and the treatment of distilling and filtering can be greatly improved, meanwhile, the influence degree, the smell and the taste of the corn oil are improved by mixing the cashew nut oil and the rapeseed oil, the corn oil is healthier, the whole preparation process can obtain a better income effect, the process treatment delicacy is improved, and the required reaction conditions in the whole preparation process are mild.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a flow chart of the steps of a process for preparing corn cooking oil according to an embodiment of the invention.

Detailed Description

For further explanation of the various embodiments, the drawings which form a part of the disclosure and which are incorporated in and constitute a part of this specification, illustrate embodiments and, together with the description, serve to explain the principles of operation of the embodiments, and to enable others of ordinary skill in the art to understand the various embodiments and advantages of the invention, and, by reference to these figures, reference is made to the accompanying drawings, which are not to scale and wherein like reference numerals generally refer to like elements.

According to the embodiment of the invention, a process for preparing corn edible oil is provided.

According to the embodiment of the invention, the corn edible oil comprises the following raw materials in percentage by weight:

In order to clearly understand the technical scheme of the invention, the technical scheme of the invention is described in detail through specific examples.

The first embodiment is as follows:

the corn edible oil is composed of the following raw materials in percentage by weight:

35% of corn germ powder, 35% of corn granules, 3% of citric acid, 2% of cellulase, 2% of alpha-amylase, 4% of cashew nut oil, 4% of rapeseed oil, 5% of white sesame, 6% of perilla seeds and 2% of white spirit.

Example two:

37.5% of corn germ powder, 37.5% of corn granules, 4% of citric acid, 2.5% of cellulase, 2.5% of alpha-amylase, 5% of cashew nut oil, 5% of rapeseed oil, 7% of white sesame, 8% of perilla seeds and 2.5% of white spirit.

Example three:

40% of corn germ powder, 40% of corn granules, 5% of citric acid, 3% of cellulase, 3% of alpha-amylase, 6% of cashew nut oil, 6% of rapeseed oil, 8% of white sesame, 10% of perilla seeds and 3% of white spirit.

For the convenience of understanding the above technical solution of the present invention, the following detailed description is made on the flow of the above solution of the present invention with reference to the accompanying drawings, and specifically is as follows:

according to the embodiment of the invention, the preparation process of the corn edible oil is also provided, and comprises the following steps:

step S101: mixing corn germ powder and citric acid according to parts by weight, extracting, and evaporating to remove a solvent to obtain corn crude oil;

step S103: standing and precipitating the crude oil for 40-60 min, filtering by using a filter and performing deodorization treatment;

step S105: using a stirring tank to bake and fry the whole corn grains at a constant temperature of 50-60 ℃ and putting the corn grains into a squeezer to squeeze out oil;

step S107: cleaning white sesame and perilla seeds, washing with warm water, drying in the air, mixing with all the raw materials, stirring, heating to 100-115 ℃, reacting for 1-5 minutes, standing and drying to 35-40 ℃;

step S109: putting the mixed oil into a centrifuge for separation and filtration, or refining the oil;

step S111: heating, distilling and condensing the refined oil to obtain the corn oil.

In one embodiment, the corn germ meal is first screened through a 20-40 mesh screen.

In one embodiment, the Chinese liquor is grain liquor with a alcoholicity of above 48 °, and during preparation, the Chinese liquor is heated to 30-40 °.

In one embodiment, in step S101, steam treatment is performed at normal pressure for 27-30min, pH is adjusted to 3-6 after cooling, cellulase and alpha-amylase are added, stirring is performed for 4-6h at 40-50 ℃, enzyme deactivation is performed for 5-20min at the temperature of 126 ℃ under 0.1MPa, cooling is performed, centrifugation is performed for 15-30min at 4000r/min, and supernatant is collected.

In one embodiment, in step S105, the whole corn kernels are dried before pressing, so that the moisture content of the whole corn kernels is within 4%, and the pressing temperature is greater than 100 °.

In one embodiment, for step S103, before the filter is operated, edible oil filtering cloth is put on the filter plate, and the filtering is repeated until silt, blank, powder and other solid impurities in the crude oil are removed.

In one embodiment, in step S103, the filtered crude oil is first alkali-refined in an alkali refining pot to remove free fatty acids; and then putting the mixture into a decoloring tank for decoloring, deodorizing, finally putting the mixture into a washing tank, adding hot water for washing for 2-3 times at the water temperature of 85-95 ℃, and standing for later use.

In one embodiment, in step S109, the mixture is placed into a low-speed centrifuge with a rotation speed of 5000-8000 r/min, and after the crystal is separated out, the mixture is filtered to remove the residue, and after the rotation speed is adjusted to 9000-.

In one embodiment, for step S111 above, the refined oil is heated to 240-.

In conclusion, by means of the technical scheme of the invention, the branched crude oil extraction is carried out by utilizing the corn germ powder and the corn whole grains, the content and the quality of the crude oil in the initial step can be improved, the extraction rate is greatly improved, the purity can be improved, the energy consumption is greatly reduced, in addition, the crude oil and the corn whole grains are respectively filtered, distilled and independently mixed in different modes to carry out the differential reaction of the crude oil, the nutrient components of the corn oil are well ensured to be unchanged by adding the white spirit, the white sesame seeds and the perilla seeds, the taste is pure, the fragrance is lasting, the high-temperature stirring of the corn grains in the preparation process is equivalent to the pre-roasting and then the squeezing of the corn grains, the integral cleanness and sanitation degree are improved, the function of killing the mold can be realized, in addition, the content is very high, and the distillation and filtration treatment are carried out by controlling the squeezing temperature, can improve oil output greatly to promote influence degree, smell and the taste of itself simultaneously through mixing cashew nut oil and rapeseed oil, let maize oil healthier, and let whole preparation technology can obtain better income effect, thereby promote the exquisite nature of technology processing, and make the demand reaction condition in the whole preparation process become comparatively mild.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The corn edible oil is characterized by comprising the following raw materials in percentage by weight:

2. A process for preparing the corn edible oil, which is used for the process for preparing the corn edible oil in claim 1, and comprises the following steps:

3. The edible corn oil as claimed in claim 1, wherein the corn germ meal is first screened, and the screening mesh number is 20-40 meshes.

4. The corn edible oil as claimed in claim 1, wherein the white spirit is grain spirit with an alcohol content of more than 48 degrees, and the white spirit is heated to a temperature of 30-40 degrees during preparation.

5. The process of claim 2, wherein in the first step, the corn oil is treated with steam at normal pressure for 27-30min, cooled, then the pH is adjusted to 3-6, cellulase and alpha-amylase are added, the mixture is stirred at 40-50 ℃ for 4-6h, then enzyme deactivation is carried out at 0.1MPa and 126 ℃ for 5-20min, the mixture is cooled, and the mixture is centrifuged at 4000r/min for 15-30min, and the supernatant is collected.

6. The process for preparing the corn edible oil as claimed in claim 2, wherein in the third step, the whole corn grains are dried before pressing, so that the moisture content of the whole corn grains is within 4 percent, and the pressing temperature is more than 100 degrees.

7. The process of claim 2, wherein in the second step, before the filter is operated, edible oil filtering cloth is put on the filter plate, and the filtering is repeated until silt, material block, flour and other solid impurities in the crude oil are removed.

8. The process for preparing edible oil from corn as claimed in claim 2, wherein in the second step, the filtered crude oil is first alkali-refined in an alkali-refining pot to remove free fatty acids; and then putting the mixture into a decoloring tank for decoloring, deodorizing, finally putting the mixture into a washing tank, adding hot water for washing for 2-3 times at the water temperature of 85-95 ℃, and standing for later use.

9. The process of claim 2, wherein in the fifth step, the corn oil is placed in a low-speed centrifuge with the rotation speed of 5000-8000 r/min, after the crystal is separated out, the residue is filtered and taken out, after the rotation speed is adjusted to 9000-.

10. The process of claim 2, wherein in the sixth step, the refined oil is heated to 260 ℃ and distilled with superheated steam under the vacuum of 100 Pa and 200 Pa.