CN108783193A - A kind of method that green high-efficient removes cadmium in heavy metal cadmium rice meal - Google Patents
A kind of method that green high-efficient removes cadmium in heavy metal cadmium rice meal Download PDFInfo
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- CN108783193A CN108783193A CN201710319444.5A CN201710319444A CN108783193A CN 108783193 A CN108783193 A CN 108783193A CN 201710319444 A CN201710319444 A CN 201710319444A CN 108783193 A CN108783193 A CN 108783193A
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- cadmium
- rice meal
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L5/00—Preparation or treatment of foods or foodstuffs, in general; Food or foodstuffs obtained thereby; Materials therefor
- A23L5/20—Removal of unwanted matter, e.g. deodorisation or detoxification
- A23L5/27—Removal of unwanted matter, e.g. deodorisation or detoxification by chemical treatment, by adsorption or by absorption
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L5/00—Preparation or treatment of foods or foodstuffs, in general; Food or foodstuffs obtained thereby; Materials therefor
- A23L5/30—Physical treatment, e.g. electrical or magnetic means, wave energy or irradiation
- A23L5/32—Physical treatment, e.g. electrical or magnetic means, wave energy or irradiation using phonon wave energy, e.g. sound or ultrasonic waves
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- Health & Medical Sciences (AREA)
- Nutrition Science (AREA)
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Polymers & Plastics (AREA)
- Processing Of Solid Wastes (AREA)
- Coloring Foods And Improving Nutritive Qualities (AREA)
Abstract
The present invention relates to a kind of methods of cadmium in removal heavy metal cadmium rice meal, belong to technical field of agricultural product process.Using cadmium pollution rice meal as raw material, using eutectic solvent prepared by natural component 1,2-PD and glycine as eluant, eluent, using the characteristic of the natural eutectic solvent, the heavy metal cadmium in rice meal is efficiently removed, supersound process is passed through, shorten processing time, improves removal efficiency.After elution, using water as solvent, the property of water is dissolved according to natural eutectic solvent, centrifugation rice meal after vacuum dried, efficiently prepares low cadmium rice meal.This method is used as eluant, eluent and solvent using nontoxic natural eutectic solvent and water, and production process is simple, efficient, safety and green.
Description
Technical field
The invention belongs to food processing field, it is related to the efficient minimizing technology of heavy metal cadmium in a kind of cadmium pollution rice meal.
Background technology
Food-safety problem is increasingly paid close attention to, and heavy metal pollution crops field is a severe problem always,
The exceeded report of cadmium content often occurs especially in rice.Rice is many Area Inhabitants staple foods in China, however, city of China at present
Sell rice random sampling the result shows that, cadmium content is exceeded in about 10% rice.
Cadmium has toxicity and mutagenicity, can accumulate in vivo and long half time was up to 10 to 30 years.Cadmium is by U.S.'s poisonous substance pipe
The reason committee is classified as the 6th and jeopardizes the noxious material that the mankind are health.Cadmium is entered in vivo, so by food chain bioconcentration
It is accumulated in the histoorgans such as liver, kidney, lung and bone afterwards, finally induces a variety of diseases, damage health.Kidney is cadmium effect
First target organs, chronic cadium poisoning can cause kidney disorder, or even can largely cause death.Bone toxicity is that cadmium is chronic
Another importance of toxicity, cardinal symptom, which is bone density, to be reduced, and osteomalacia and is easily fractured.
Preventing agricultural product cadmium pollution, mainly there are two measures, when start with from external source environment, cadmium pollution soil repair；Second is that
From cadmium pollution product itself, the cadmium content in agricultural product is controlled by processing technology.Currently, cadmium pollution soil repair is main
The Method means wanted, but in biological restoration the screening of engineering bacteria and soil conditioner method secondary pollution suffer from it is insoluble
Technical barrier.In addition, in terms of cadmium pollution rice removing sulfuldioxide, mainly with husking, husk rice and the method for immersion, but above method is gone
Except efficiency is low, complex process, it is of high cost the shortcomings of limit its application in actual production.
The natural eutectic solvent of 1,2-PD/glycine is by natural products 1,2-PD and glycine with certain
Molar ratio is a kind of novel eutectic solvent by heating the eutectic liquid being prepared.It has not effumability, right
Environment nonhazardous, product easily biological-degradable, low in raw material price, dissolubility extensively, reaction product be easily isolated, it is easily prepared and
The advantages that three wastes problem is not present in preparation process, it is considered to be a kind of sustainable solvent of novel green.Natural eutectic solvent
Properties are that most organic solvents do not have.It is anxious for the defect of heavy metal cadmium method in the domestic rice meal of removal at present
Need to research and develop heavy metal cadmium method in a kind of green high-efficient removal cadmium pollution rice meal, this method in remove other agricultural product with much money
Preferable application prospect will also be had by belonging to cadmium.
Invention content
Technical problem
Present invention aims at the defects for heavy metal cadmium in existing domestic removal rice meal, research and develop a kind of green high-efficient
Remove heavy metal cadmium method in cadmium pollution rice meal.
Technical solution
The object of the invention can be realized by following technical matters scheme：Using cadmium pollution rice meal as raw material, using 1,2- third
The natural eutectic solvent of glycol/glycine is eluant, eluent, and specific aim removes heavy metal cadmium, while improving it by being ultrasonically treated
Removal rate.Elution processes parameter is：Solid-liquid ratio 1: 5~25,50~60 DEG C of temperature, ultrasonic power 75W, 1~2h of time, rice meal
Middle heavy metal cadmium removal rate is 94%~99%.Low cadmium rice meal isolation and purification method is：By elution mixture and deionized water
Mass ratio 1: 5~10 ratio addition deionized water to elution mixture in, uniformly mix, and after gone after 8000rpm is centrifuged
Except supernatant, precipitation is vacuum dried, obtains the beige white powder that the rate of recovery is 91%~97%.
The method of the present invention and product have the following advantages that compared with existing conventional method removes cadmium pollution rice meal：
1, organic solvent is substituted using nontoxic natural eutectic solvent, avoids secondary pollution, process is more green；
2, separation solvent is adopted water as, the rice meal after elution can directly apply to food industry；
3, elution process is simple for process, and the time is short, efficient.
Specific implementation mode
Embodiment 1
Cadmium pollution rice meal 100g (cadmium content 2.0mg/kg), the natural eutectic solvent 500g of 1,2-PD/glycine,
Be uniformly mixed, be put into ultrasonic container, at 50 DEG C, 75W is ultrasonically treated 1h for feed temperature control, be then added 3kg additions go from
It in sub- water to extraction mixture, is uniformly mixed, supernatant is removed after 8000rpm is centrifuged, precipitation is vacuum dried, obtains low cadmium
Rice meal 97.0g, and after through micro-wave digestion, atomic spectrophotometer detection every pollution rice meal heavy metal cadmium removal rate be
94.1%
Embodiment 2
Cadmium pollution rice meal 100g (cadmium content 2.0mg/kg), the natural eutectic solvent 1kg of 1,2-PD/glycine,
It is uniformly mixed, is put into ultrasonic container, at 55 DEG C, 75W is ultrasonically treated 1.5h for feed temperature control, and 8.3kg additions are then added
It in deionized water to extraction mixture, is uniformly mixed, supernatant is removed after 8000rpm is centrifuged, precipitation is vacuum dried, obtains
Low cadmium rice meal 95.3g, and after through micro-wave digestion, atomic spectrophotometer detection every pollution rice meal heavy metal cadmium removal rate be
97.2%
Embodiment 3
Cadmium pollution rice meal 100g (cadmium content 2.0mg/kg), the natural eutectic solvent of 1,2-PD/glycine
2.5kg is uniformly mixed, is put into ultrasonic container, and at 60 DEG C, 75W is ultrasonically treated 2h for feed temperature control, and 26kg is then added and adds
Add in deionized water to extraction mixture, be uniformly mixed, supernatant is removed after 8000rpm is centrifuged, precipitation is vacuum dried, obtains
Low cadmium rice meal 91.4g, and after through micro-wave digestion, atomic spectrophotometer detection every pollution rice meal heavy metal cadmium removal rate
It is 99.0%.
Claims (4)
1. a kind of heavy metal cadmium method in removal rice meal, it is characterised in that using the rice meal of cadmium pollution as raw material, using 1,2-
Natural eutectic solvent prepared by propylene glycol and glycine is eluant, eluent, using the solvent property, efficiently removes weight in rice meal
Cadmium metal, while shortening processing time by being ultrasonically treated, improve removal rate；After elution, using water as solvent, rice meal is dissolved
In remaining eluant, eluent, remove supernatant after centrifugation, precipitate it is vacuum dried after obtain beige white powder, as low cadmium rice
Powder.
2. according to the method described in claim 1, it is characterized in that eluant, eluent 1,2-PD/natural eutectic solvent of glycine
Be by natural products 1,2-PD and glycine in molar ratio 3: 1 ratio congruent melting is heated at 95 DEG C, formed after cooling
Transparency liquid.
3. according to the method described in claim 1, it is characterized in that elution processes parameter is：Solid-liquid ratio 1: 5~25, temperature 50~
60 DEG C, ultrasonic power 75W, 1~2h of time, heavy metal cadmium removal rate is 94%~99% in rice meal.
4. according to the method described in claim 1, it is characterized in that low cadmium rice meal isolation and purification method is：By elution mixture
In the ratio of deionized water quality ratio 1: 5~10 addition deionized water to elution mixture, be uniformly mixed, and after pass through
Supernatant is removed after 8000rpm centrifugations, precipitation is vacuum dried, obtains the beige white powder that the rate of recovery is 91%~97%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710319444.5A CN108783193A (en) | 2017-05-03 | 2017-05-03 | A kind of method that green high-efficient removes cadmium in heavy metal cadmium rice meal |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710319444.5A CN108783193A (en) | 2017-05-03 | 2017-05-03 | A kind of method that green high-efficient removes cadmium in heavy metal cadmium rice meal |
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| CN108783193A true CN108783193A (en) | 2018-11-13 |
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| CN201710319444.5A Pending CN108783193A (en) | 2017-05-03 | 2017-05-03 | A kind of method that green high-efficient removes cadmium in heavy metal cadmium rice meal |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109717358A (en) * | 2019-03-11 | 2019-05-07 | 江南大学 | A kind of whole rice circulation method for removing cadmium of high-efficiency and energy-saving type |
| CN110179045A (en) * | 2019-05-30 | 2019-08-30 | 安徽稼仙金佳粮集团股份有限公司 | The processing method for eliminating metal ion in rice using bacterium colony |
| CN115198094A (en) * | 2022-07-19 | 2022-10-18 | 安徽格派锂电循环科技有限公司 | Process method for removing cadmium from cobalt sulfate solution through binary solvent synergistic extraction |
| WO2023010675A1 (en) * | 2021-08-03 | 2023-02-09 | 广州检验检测认证集团有限公司 | Precursor of eutectic solvent, eutectic solvent, preparation method therefor and application thereof |
| CN115739904A (en) * | 2022-11-02 | 2023-03-07 | 西湖大学 | Harmless recycling treatment process for heavy metal-enriched plants |
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| CN104585563A (en) * | 2015-01-12 | 2015-05-06 | 湖南农业大学 | Method for removing heavy metal cadmium from rice by utilizing complex lactobacillus fermentation |
| CN104920966A (en) * | 2015-06-30 | 2015-09-23 | 中南林业科技大学 | Cadmium-removed rice flour and preparation method thereof |
| CN105288634A (en) * | 2015-10-23 | 2016-02-03 | 南京农业大学 | Preparation method of glycerin-amino acid deep eutectic solvent |
| FR3036618A1 (en) * | 2015-05-26 | 2016-12-02 | Gattefosse S A S | VEGETABLE EXTRACTS FOR COSMETICS, SOLVENTS AND METHODS FOR OBTAINING SAME |
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| CN104585563A (en) * | 2015-01-12 | 2015-05-06 | 湖南农业大学 | Method for removing heavy metal cadmium from rice by utilizing complex lactobacillus fermentation |
| FR3036618A1 (en) * | 2015-05-26 | 2016-12-02 | Gattefosse S A S | VEGETABLE EXTRACTS FOR COSMETICS, SOLVENTS AND METHODS FOR OBTAINING SAME |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109717358A (en) * | 2019-03-11 | 2019-05-07 | 江南大学 | A kind of whole rice circulation method for removing cadmium of high-efficiency and energy-saving type |
| CN109717358B (en) * | 2019-03-11 | 2022-03-29 | 江南大学 | Efficient energy-saving whole-meter circulating cadmium removal method |
| CN110179045A (en) * | 2019-05-30 | 2019-08-30 | 安徽稼仙金佳粮集团股份有限公司 | The processing method for eliminating metal ion in rice using bacterium colony |
| WO2023010675A1 (en) * | 2021-08-03 | 2023-02-09 | 广州检验检测认证集团有限公司 | Precursor of eutectic solvent, eutectic solvent, preparation method therefor and application thereof |
| CN115198094A (en) * | 2022-07-19 | 2022-10-18 | 安徽格派锂电循环科技有限公司 | Process method for removing cadmium from cobalt sulfate solution through binary solvent synergistic extraction |
| CN115739904A (en) * | 2022-11-02 | 2023-03-07 | 西湖大学 | Harmless recycling treatment process for heavy metal-enriched plants |
| CN115739904B (en) * | 2022-11-02 | 2024-03-01 | 西湖大学 | Harmless resource treatment process for heavy metal enriched plants |
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Application publication date: 20181113 |