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Low-temperature spread jet nitrogen charge refreshing method for maize germ oil

A technology of corn germ oil and fresh-keeping method, which is applied in the field of nitrogen flushing and fresh-keeping, and low temperature field of corn germ oil

Active Publication Date: 2011-06-01
SHANDONG XIWANG FOOD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, under normal temperature and pressure, 0.2-0.4Kg of oxygen will be adsorbed and dissolved in 1kg of edible oil. This small amount of oxygen is enough to oxidize and deteriorate edible oil, especially corn oil. Therefore, it is necessary to study a new method that is more suitable for corn oil preservation.

Method used

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  • Low-temperature spread jet nitrogen charge refreshing method for maize germ oil
  • Low-temperature spread jet nitrogen charge refreshing method for maize germ oil
  • Low-temperature spread jet nitrogen charge refreshing method for maize germ oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Use a single diatomaceous earth sand filter rod nitrogen dispersion injector whose geometric dimensions are: Long cylindrical body with a pore size ranging from 16 to 30 microns.

[0039] It is installed in parallel in the center of the oil pipeline before filling, so that the nitrogen gas will form a fine airflow after passing through the dispersing injector under the pressure of 0.8MPa, and form a turbulent mixing with the oil liquid, so as to eliminate the oxygen that is miscible in the oil and prevent corn The purpose of oil oxidation deterioration.

[0040] The oxygen content in the corn germ oil processed by the nitrogen-filled fresh-keeping method of this embodiment is less than 0.008%;

[0041] The acid value in the bottled corn germ oil processed by the nitrogen-filling fresh-keeping method of this embodiment increased from 0.12 (mgKOH / g) to 0.18 (mgKOH / g) within 18 months, only an increase of 0.5 times.

Embodiment 2

[0043] Nitrogen dispersion injectors using three diatomaceous earth sand filter rods, each geometrically dimensioned as: Long cylindrical body with a pore size of 16-30 microns, installed in series in the oil pipeline before canning, the centerline of each diatomite sand filter rod coincides with the centerline of the oil pipeline, so that the nitrogen gas is under 0.6MPa pressure , After passing through the dispersing injector, a fine airflow is formed, and it forms a turbulent mixing with the oil liquid, so as to eliminate the oxygen miscible in the oil and achieve the purpose of preventing the corn oil from oxidative deterioration.

[0044] The oxygen content in the corn germ oil processed by the nitrogen-filled fresh-keeping method of this embodiment is less than 0.008%;

[0045] The acid value in the bottled corn germ oil processed by the nitrogen flushing preservation method of this embodiment increased from 0.12 (mgKOH / g) to 0.18 (mgKOH / g) within 18 months, only an i...

Embodiment 3

[0047] In the corn germ oil production system, the processing process example of the nitrogen-filling fresh-keeping method of the present invention is adopted

[0048] During the production process, the nitrogen-filled fresh-keeping mainly grasps the following points:

[0049] The corn oil from refining is covered with nitrogen under negative pressure; cooled to 7-15°C; nitrogen dispersive jet is used to disperse and inject nitrogen at a pressure of 0.5-0.8 MPa.

[0050] See the attached flow chart figure 1 , the specific steps are:

[0051]With the corn germ oil from the refining process, under a certain negative pressure (133-266Pa, the oxygen content is the lowest at this time), immediately carry out nitrogen filling by covering method, and send it into a 30-ton refined oil storage tank; use oil pump 2 as power , after being filtered by the precision filter 3, it is sent to the cooling cooler device 4 to cool down, and reaches the set temperature between 7 and 15° C; The...

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Abstract

The invention discloses a low-temperature spread jet nitrogen charge refreshing method for maize germ oil. The method specifically comprises the following steps of: before oil is canned and stored, extending a nitrogen outlet of the conventional nitrogen charge pipeline and inserting the nitrogen outlet into oil liquid, and arranging a nitrogen spread injector made of a cellular material at the outlet of the nitrogen pipeline to ensure that the nitrogen passes through the spread injector to form tiny airflow to be mixed with the oil liquid to form turbulent mixing, so that oxygen mixed with and dissolved in the oil is removed and the aim of preventing the maize oil from being oxidized and deteriorated is fulfilled. The oxygen content of the maize germ oil processed by the nitrogen charge refreshing method is less than 0.008 percent; and the oxygen content of the maize germ oil processed by the conventional nitrogen charge covering method is 0.3 percent.

Description

technical field [0001] The invention belongs to the field of corn germ oil production, in particular to a low-temperature, nitrogen flushing fresh-keeping method for corn germ oil. Background technique [0002] Corn germ is a nutrient-rich oil. It is loved by people because it is rich in unsaturated fatty acids, tocopherols, and phytosterols. [0003] Oxidation is the most critical factor affecting the freshness of edible oil. Small molecular substances such as aldehydes, ketones, and acids decomposed during the oxidation process have a strong pungent odor and affect the taste, so it is not suitable for use. Corn germ oil is easily oxidized, and its oxidation and rancidity are the fastest among all oils. The traditional method to solve the oxidative deterioration of edible oil is to store it by adding artificially synthesized antioxidant-tert-butylhydroquinone (TBHQ). Long-term excessive intake of antioxidant TBHQ will cause certain damage to human health. The National F...

Claims

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Application Information

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IPC IPC(8): C11B5/00
Inventor 王勇王红雨崔玉坤崔宝贵杜军王晓刘松岭魏磊霍光农程宝亮
Owner SHANDONG XIWANG FOOD
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