Method for removing pigments and metal ions from vegetable oil

A metal ion and vegetable oil technology, applied in the field of physics and chemistry, can solve the problems of unsatisfactory decolorization effect, difficult to completely remove adsorbents, weak metal ion adsorption function, etc., and achieves the effect of simple and feasible removal method, large particle size and firm structure.

Inactive Publication Date: 2017-08-08
SHANDONG YUHUANG GRAIN & OIL FOOD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Chinese invention patent 201410779486.3 discloses a magnetic silica adsorbent, which can effectively adsorb aflatoxin, but has weak adsorption to metal ions; ", Cereals, Oils and Food Science and Technology in 2013, studied the removal of benzopyrene in sesame oil and the decolorization effect of different adsorbents and dosages. A variety of adsorbents were used, including activated carbon, activated clay and a mixture of the two, but the decolorization effect was not enough. ideal and the adsorbent is difficult to completely remove and other defects

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A method for removing pigments and metal ions in vegetable oils, comprising the steps of:

[0029] Add 1% by mass of decolorizing adsorbent to vegetable oil, heat to 75°C, stir at 100rpm for 30min under heat preservation conditions, let stand for 60min, and then centrifuge to separate the precipitate to obtain the product.

[0030] The decolorizing adsorbent includes the following raw materials: diatomaceous earth, hydrochloric acid solution, sodium dodecylsulfonate, nano silicon carbide, silane coupling agent kh550, polypropylene balls, polyvinyl alcohol aqueous solution, sulfuric acid aqueous solution, soybean meal.

[0031] The decolorizing adsorbent is prepared according to the following process:

[0032] Step 1) Add nano-silicon carbide to twice the weight of deionized water, stir evenly, then add silane coupling agent kh550 accounting for 20% by mass of nano-silicon carbide, heat up to 60°C, and ultrasonically treat for 10 minutes to obtain nano-silicon carbide D...

Embodiment 2

[0038] A method for removing pigments and metal ions in vegetable oils, comprising the steps of:

[0039] Add 2% by mass of decolorizing adsorbent to vegetable oil, heat to 80°C, stir at 100rpm for 40min under heat preservation conditions, let stand for 50min, and then centrifuge to separate the precipitate to obtain the product.

[0040] The decolorizing adsorbent includes the following raw materials: diatomaceous earth, hydrochloric acid solution, sodium dodecylsulfonate, nano-silicon carbide, silane coupling agent kh550, polypropylene balls, polyvinyl alcohol aqueous solution, sulfuric acid aqueous solution, soybean meal.

[0041] The decolorizing adsorbent is prepared according to the following process:

[0042]Step 1) Add nano-silicon carbide to twice the weight of deionized water, stir evenly, then add silane coupling agent kh550 accounting for 20-30% by mass of nano-silicon carbide, heat up to 60°C, and ultrasonically treat for 15 minutes to obtain nano-silicon carbid...

Embodiment 3

[0048] The effect detection of removal method of the present invention:

[0049] Control group 1: select activated clay as the decolorizing adsorbent control group 1, and the removal method is the same as in Example 1;

[0050] Control group 2: select activated carbon as the decolorization adsorbent control group 2, and the removal method is the same as in Example 1;

[0051] Test group: Example 1.

[0052] standard:

[0053] (1) Determination of color: according to the method of GB / T 22460-2208;

[0054] (2) Determination of iron content: according to the method of GB / T 5009.90-2003;

[0055] (3) Determination of copper content: according to GB / T 5009.13-2003 method.

[0056] (4) Oil content %: the weight ratio of the oil content in the decolorized adsorbent after centrifugation to the adsorbent.

[0057] (5) Residual amount %: the weight ratio of the residual amount of the decolorizing adsorbent in the oil to the adsorbent.

[0058] Taking corn oil as an example, the s...

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Abstract

The invention belongs to the technical field of physics and chemistry and discloses a method for removing pigments and metal ions from vegetable oil. The method comprises the following steps: adding 1% to 2% of decoloring adsorbent into the vegetable oil, heating the temperature of the mixture to 75 DEG C to 80 DEG C, carrying out stirring for 30 to 60 minutes at the rate of 100rpm under heat-preserving conditions, then, carrying out standing for 30 to 60 minutes, and then, carrying out centrifugation, so as to obtain precipitates. The method disclosed by the invention is simple and feasible, the pigments and the metal ions can be effectively removed, and thus, the wasting of oils is avoided; the quality of the vegetable oil cannot be damaged, so that food safety is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of physics and chemistry, and relates to a method for removing pigment and metal ions in vegetable oil. Background technique [0002] Vegetable oil is a compound composed of unsaturated fatty acid and glycerol. It is widely distributed in nature and is the oil obtained from the fruit, seed and germ of plants. Such as peanut oil, corn oil, soybean oil, linseed oil, castor oil, rapeseed oil, etc. The main components of vegetable oil are esters of straight-chain higher fatty acids and glycerol. In addition to palmitic acid, stearic acid and oleic acid, fatty acids also contain a variety of unsaturated acids, such as erucic acid, oleic acid, and ricinoleic acid. Vegetable oil mainly contains vitamin E, K, calcium, iron, phosphorus, potassium and other minerals, fatty acids, etc. Fatty acids in vegetable oils make the skin moisturized and shiny. [0003] After degumming, deacidification, decolorization and deo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B3/10A23D9/04B01J20/30B01J20/26
CPCA23D9/04B01J20/261B01J20/3028B01J20/3064C11B3/10
Inventor 张守民尹世亭张业朱礼国王依军
Owner SHANDONG YUHUANG GRAIN & OIL FOOD
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