CN110179047A - The minimizing technology of heavy metal in a kind of algal gel - Google Patents
The minimizing technology of heavy metal in a kind of algal gel Download PDFInfo
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- CN110179047A CN110179047A CN201910620662.1A CN201910620662A CN110179047A CN 110179047 A CN110179047 A CN 110179047A CN 201910620662 A CN201910620662 A CN 201910620662A CN 110179047 A CN110179047 A CN 110179047A
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- algal gel
- heavy metal
- eluant
- eluent
- minimizing technology
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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
- A23L5/273—Removal of unwanted matter, e.g. deodorisation or detoxification by chemical treatment, by adsorption or by absorption using adsorption or absorption agents, resins, synthetic polymers, or ion exchangers
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- Health & Medical Sciences (AREA)
- Nutrition Science (AREA)
- Life Sciences & Earth Sciences (AREA)
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- Engineering & Computer Science (AREA)
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- Coloring Foods And Improving Nutritive Qualities (AREA)
Abstract
The present invention provides a kind of minimizing technologies of heavy metal in algal gel, and eluant, eluent is added in algal gel, are uniformly mixed, and after oscillation washing, collect precipitating, precipitating is target product；Eluant, eluent is the mixed solution of citric acid and disodium ethylene diamine tetraacetate.The minimizing technology of heavy metal can be applied to food service industry in algal gel of the present invention, and the heavy metal lead in algal gel, arsenic content can be removed 40% and 60% or more respectively, have the effect of good removal heavy metal lead, arsenic.
Description
Technical field
The invention belongs to algae processing technology field, a kind of minimizing technology of heavy metal in algal gel is provided.
Background technique
Salt algae (Du Shi algae) is a kind of Eukaryotic Algae, can be survived in the salt water of 2%-39% salinity, is suitable for and carries out salt pan
Artificial breeding.Beta carotene may be up to 5%-10% (dry weight) in Du Shi frond, and be rich in 30% or so glycerol and 30%-
40% protein and fatty acid, chlorophyll and tetraene oil etc., in salt algae beta carotene containing up to 40% 9-cis- β-
Carrotene is that other source carrotene are unrivaled, and nutritive value is high, and foreign countries are widely used in medical, food.
Salt algae and algae extrats are the new resource foods of Ministry of Public Health's bulletin in 2009, since salt algae is micro- compared to other oceans
Algae, cultivating condition is relatively harsh, low output, and easy enriching heavy metal in salt algae breeding process, the heavy metals exceeding standard problem of salt algae
Always restrict the bottleneck of salt algae powder industry development.Therefore the manufacturing enterprise of edible salt algae powder domestic at present is few, leads in the market
Miscarriage product are natural beta-carotin, and major part is all relied on from external import.Australia, Israel, U.S. etc. have realized
The industrialization of salt algae cultivation, but only Israel produces salt algae powder, all supplies Japanese markets, other Yan Zao enterprises are all used for
Extract beta carotene.The domestic market demand of salt algae powder product is huge, and the qualified algae powder produced can be used as food original
Material is sold.
Heavy metal removes aspect again in algal gel, at present in terms of studies in China: Jiang Qiao etc. uses certain density hydrochloric acid, vinegar
Acid, alkali, water and boiling water etc. study inorganic arsenic removing in seaweed, can remove most inorganic arsenic in seaweed, but salt
Both scavengers of bronsted lowry acids and bases bronsted lowry liquid bring certain influence to the safe edible of algae.Therefore, being badly in need of one kind can be used for food service industry
And the heavy metals removal method with good removal effect.It will be salt that heavy metal, which reduces technology, in salt algae provided by the invention
The marketization development of algae plays a role in promoting, and realizes the abundant development and utilization to living marine resources.
Summary of the invention
In view of this, the present invention is directed to propose a kind of can be used for food service industry, with good removal effect, simple process
The minimizing technology of heavy metal in algal gel, to solve the above problems.
In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:
The minimizing technology of heavy metal, eluant, eluent is added in algal gel in a kind of algal gel, is uniformly mixed, after oscillation washing,
Precipitating is collected, precipitating is target product；The eluant, eluent is the mixed of citric acid and disodium ethylene diamine tetraacetate (EDTA-2Na)
Close solution.
Further, the solid-liquid ratio of the algal gel and eluant, eluent is that 100ml eluant, eluent is added in every 5g algal gel.
Further, the concentration of citric acid is 10~40g/l in the eluant, eluent, and the concentration of disodium ethylene diamine tetraacetate is
1~5g/l.
Further, the preparation steps of the eluant, eluent are as follows: proportionally weigh citric acid, disodium ethylene diamine tetraacetate and
Citric acid is dissolved in distilled water by distilled water, adds disodium ethylene diamine tetraacetate, and sufficiently dissolution is uniformly mixed so as to obtain the elution
Agent
Further, a length of 12 when oscillation of the algal gel in the eluant, eluent~for 24 hours.
Further, the collection precipitates method particularly includes: after being layered by the way of centrifugation, removal supernatant is obtained
Moist precipitate is precipitated after drying moist precipitate.
Further, the drying temperature is 80 DEG C.
Further, the algal gel is to obtain after salt algae is centrifuged.
Compared with the existing technology, the minimizing technology of heavy metal has the advantage that in algal gel of the present invention
(1) in algal gel of the present invention the minimizing technology of heavy metal by using by citric acid and ethylenediamine tetra-acetic acid two
The eluant, eluent oscillation washing algal gel that sodium is configured to, realizes the removal to lead, arsenic heavy metal in algal gel, removal effect is good, technique
Process is simple；
(2) in algal gel of the present invention scavenger used in the minimizing technology of heavy metal by citric acid and ethylenediamine tetraacetic
Acetic acid disodium is formulated, and both for innocuous substance, is used equally for food service industry；
(3) lead content in algal gel can be removed 40% or more, arsenic by the minimizing technology of heavy metal in algal gel of the present invention
60% or more content removal.
Specific embodiment
In addition to being defined, technical term used in following embodiment has universal with those skilled in the art of the invention
The identical meanings of understanding.Test reagent used in following embodiment is unless otherwise specified conventional biochemical reagent；It is described
Experimental method is unless otherwise specified conventional method.
Below with reference to embodiment, the present invention will be described in detail.
Embodiment 1
It weighs 10g citric acid and is placed in 2L and clean and in the beaker dried, 1L distilled water is added into beaker, then weigh 1g's
Disodium ethylene diamine tetraacetate is added in beaker, obtains eluant, eluent after completely dissolution；
Algal gel will be obtained in such a way that the salt algae of raceway pond culture is by centrifugation, weighs 5g algal gel and be put into clean and dry
250ml triangular flask in, be added the above-mentioned configured eluant, eluent of 100ml, be placed on shaking table and vibrated for 24 hours after mixing
Afterwards, it is centrifuged, removal supernatant obtains moist precipitate, moist precipitate is placed in 80 DEG C of baking oven and stands drying, obtains target product.
Comparative example 1
Eluant, eluent is replaced using distilled water in comparative example 1, other operations are same as Example 1.
Sample detection:
3 groups are taken to be used as experimental group sample target product obtained in embodiment 1；It is produced to being compared obtained in comparative example 1
Object takes 3 groups of samples as a control group；By experimental group sample and control sample inspection, it is (untreated to measure lead, arsenic content
Lead content in former algal gel is 4.9mg/kg, arsenic content 148mg/kg)；
Testing result is as follows: the lead content in experimental group sample is 2.79mg/kg, arsenic content 54.1mg/kg；Control group
Lead content in sample is 5.2mg/kg, arsenic content 173mg/kg.It follows that through eluant, eluent treated experimental group sample
Middle heavy metal lead, arsenic content are greatly reduced, and reduced rate respectively reaches 44.9% and 63.4%, and it is processed to pass through distilled water
Heavy metal lead, arsenic content in control sample rise instead, analyze as caused due to osmotic pressure will be in algal gel environment
Heavy metal, which is brought into algal gel, to be caused.
Embodiment 2
It weighs 40g citric acid and is placed in 2L and clean and in the beaker dried, 1L distilled water is added into beaker, then weigh 5g's
Disodium ethylene diamine tetraacetate is added in beaker, obtains eluant, eluent after completely dissolution；
Algal gel will be obtained in such a way that the salt algae of raceway pond culture is by centrifugation, weighs 5g algal gel and be put into clean and dry
250ml triangular flask in, be added the above-mentioned configured eluant, eluent of 100ml, be placed on shaking table and vibrated for 24 hours after mixing
Afterwards, it is centrifuged, removal supernatant obtains moist precipitate, moist precipitate is placed in 80 DEG C of baking oven and stands drying, obtains target product.
Sample detection:
3 groups are taken to be used as experimental group sample target product obtained in embodiment 2；By experimental group sample inspection, measure lead,
Arsenic content (lead content in untreated former algal gel is 4.9mg/kg, arsenic content 148mg/kg)；
Testing result is as follows: the lead content in experimental group sample is 1.4mg/kg, arsenic content 53.4mg/kg.Thus may be used
Know, is greatly reduced through heavy metal lead, arsenic content in eluant, eluent treated experimental group sample, reduced rate respectively reaches 71.4%
With 63.9%.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (8)
1. the minimizing technology of heavy metal in a kind of algal gel, it is characterised in that: eluant, eluent is added in algal gel, is uniformly mixed, vibration
After swinging washing, precipitating is collected, precipitating is target product；The eluant, eluent is the mixing of citric acid and disodium ethylene diamine tetraacetate
Solution.
2. the minimizing technology of heavy metal in algal gel according to claim 1, it is characterised in that: the algal gel and eluant, eluent
Solid-liquid ratio is that 100ml eluant, eluent is added in every 5g algal gel.
3. the minimizing technology of heavy metal in algal gel according to claim 1, it is characterised in that: citric acid in the eluant, eluent
Concentration be 10~40g/l, the concentration of disodium ethylene diamine tetraacetate is 1~5g/l.
4. the minimizing technology of heavy metal in algal gel according to claim 3, it is characterised in that: the preparation of the eluant, eluent walks
Suddenly are as follows: citric acid, disodium ethylene diamine tetraacetate and distilled water are proportionally weighed, citric acid is dissolved in distilled water, then plus
Enter disodium ethylene diamine tetraacetate, sufficiently dissolution is uniformly mixed so as to obtain the eluant, eluent.
5. the minimizing technology of heavy metal in algal gel according to claim 1, it is characterised in that: the algal gel is in the elution
A length of 12 when oscillation in agent~for 24 hours.
6. the minimizing technology of heavy metal in algal gel according to claim 1, it is characterised in that: described to collect the specific of precipitating
Method are as follows: after being layered by the way of centrifugation, removal supernatant obtains moist precipitate, is precipitated after moist precipitate is dried.
7. the minimizing technology of heavy metal in algal gel according to claim 6, it is characterised in that: the drying temperature is 80
℃。
8. the minimizing technology of heavy metal in algal gel according to claim 1, it is characterised in that: the algal gel is the centrifugation of salt algae
After obtain.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111676141A (en) * | 2020-06-22 | 2020-09-18 | 天津科技大学 | Method for removing heavy metal arsenic in dunaliella salina |
| CN112088999A (en) * | 2020-08-10 | 2020-12-18 | 天津科技大学 | Method for removing heavy metal arsenic in dunaliella salina powder |
| CN114223835A (en) * | 2021-12-31 | 2022-03-25 | 深圳市前海小藻科技有限公司 | Method for removing heavy metal in production process of microspheroidal algae and color protection method |
| CN116549908A (en) * | 2023-05-22 | 2023-08-08 | 无锡华光环保能源集团股份有限公司 | Eluent for wet milling and eluting heavy metals in waste incineration fly ash and eluting method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109001313A (en) * | 2018-07-04 | 2018-12-14 | 肇庆市创业帮信息技术有限公司 | A kind of content of heavy metal in foods detection method |
-
2019
- 2019-07-10 CN CN201910620662.1A patent/CN110179047A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109001313A (en) * | 2018-07-04 | 2018-12-14 | 肇庆市创业帮信息技术有限公司 | A kind of content of heavy metal in foods detection method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111676141A (en) * | 2020-06-22 | 2020-09-18 | 天津科技大学 | Method for removing heavy metal arsenic in dunaliella salina |
| CN112088999A (en) * | 2020-08-10 | 2020-12-18 | 天津科技大学 | Method for removing heavy metal arsenic in dunaliella salina powder |
| CN114223835A (en) * | 2021-12-31 | 2022-03-25 | 深圳市前海小藻科技有限公司 | Method for removing heavy metal in production process of microspheroidal algae and color protection method |
| CN116549908A (en) * | 2023-05-22 | 2023-08-08 | 无锡华光环保能源集团股份有限公司 | Eluent for wet milling and eluting heavy metals in waste incineration fly ash and eluting method |
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