CN112674261A - Method for reducing heavy metal content of polyrhachis vicina roger - Google Patents
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- CN112674261A CN112674261A CN202110002909.0A CN202110002909A CN112674261A CN 112674261 A CN112674261 A CN 112674261A CN 202110002909 A CN202110002909 A CN 202110002909A CN 112674261 A CN112674261 A CN 112674261A
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- 241000802381 Polyrhachis vicina Species 0.000 title claims abstract description 81
- 241001620634 Roger Species 0.000 title claims abstract description 76
- 229910001385 heavy metal Inorganic materials 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000001035 drying Methods 0.000 claims abstract description 34
- 238000002791 soaking Methods 0.000 claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- IMQLKJBTEOYOSI-GPIVLXJGSA-N Inositol-hexakisphosphate Chemical compound OP(O)(=O)O[C@H]1[C@H](OP(O)(O)=O)[C@@H](OP(O)(O)=O)[C@H](OP(O)(O)=O)[C@H](OP(O)(O)=O)[C@@H]1OP(O)(O)=O IMQLKJBTEOYOSI-GPIVLXJGSA-N 0.000 claims abstract description 13
- 238000004140 cleaning Methods 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims description 33
- 238000001179 sorption measurement Methods 0.000 claims description 29
- 239000007787 solid Substances 0.000 claims description 18
- 239000007788 liquid Substances 0.000 claims description 11
- 238000001291 vacuum drying Methods 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 6
- 239000002994 raw material Substances 0.000 abstract description 14
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052785 arsenic Inorganic materials 0.000 abstract description 4
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 abstract description 4
- 235000013402 health food Nutrition 0.000 abstract description 4
- 229910052748 manganese Inorganic materials 0.000 abstract description 4
- 239000011572 manganese Substances 0.000 abstract description 4
- 241000257303 Hymenoptera Species 0.000 abstract description 3
- 235000013305 food Nutrition 0.000 abstract description 3
- 238000002360 preparation method Methods 0.000 abstract description 2
- 238000005119 centrifugation Methods 0.000 description 15
- 238000000926 separation method Methods 0.000 description 15
- 238000001816 cooling Methods 0.000 description 10
- 239000000706 filtrate Substances 0.000 description 10
- 238000010438 heat treatment Methods 0.000 description 10
- 239000000047 product Substances 0.000 description 6
- 238000005406 washing Methods 0.000 description 6
- 241001660135 Polyrhachis dives Species 0.000 description 5
- 210000001015 abdomen Anatomy 0.000 description 5
- 239000012452 mother liquor Substances 0.000 description 5
- 238000004321 preservation Methods 0.000 description 5
- 239000008213 purified water Substances 0.000 description 5
- 238000004064 recycling Methods 0.000 description 5
- 238000003756 stirring Methods 0.000 description 4
- 241001507629 Formicidae Species 0.000 description 2
- 230000003187 abdominal effect Effects 0.000 description 2
- 210000000038 chest Anatomy 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 235000015097 nutrients Nutrition 0.000 description 2
- 102000004169 proteins and genes Human genes 0.000 description 2
- 108090000623 proteins and genes Proteins 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 241000238631 Hexapoda Species 0.000 description 1
- 241001660172 Polyrhachis Species 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 235000001014 amino acid Nutrition 0.000 description 1
- 150000001413 amino acids Chemical class 0.000 description 1
- 230000000843 anti-fungal effect Effects 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 210000001699 lower leg Anatomy 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 235000018102 proteins Nutrition 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 210000001562 sternum Anatomy 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 210000000115 thoracic cavity Anatomy 0.000 description 1
- 239000011573 trace mineral Substances 0.000 description 1
- 235000013619 trace mineral Nutrition 0.000 description 1
- 239000011782 vitamin Substances 0.000 description 1
- 235000013343 vitamin Nutrition 0.000 description 1
- 229940088594 vitamin Drugs 0.000 description 1
- 229930003231 vitamin Natural products 0.000 description 1
- 150000003722 vitamin derivatives Chemical class 0.000 description 1
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- Drying Of Solid Materials (AREA)
Abstract
The invention discloses a method for reducing the heavy metal content of polyrhachis vicina Roger, which belongs to the technical field of polyrhachis vicina Roger and specifically comprises the following steps: soaking polyrhachis vicina Roger in water, drying, adsorbing with phytic acid solution, cleaning, and drying to obtain polyrhachis vicina Roger with low heavy metal content. The method can obviously reduce the heavy metals in the polyrhachis vicina roger, particularly lead and manganese are most obvious, wherein the lead and the arsenic completely meet the general requirements of GB16740-2014 health-care food. The polyrhachis vicina Roger treated by the method can be used as a raw material of health food, and provides a basis for the domestic pure ant preparation industry and the industrial development of ants.
Description
Technical Field
The invention relates to the technical field of polyrhachis vicina roger, in particular to a method for reducing the heavy metal content of polyrhachis vicina roger.
Background
Polyrhachis vicina (polyrhachis dives Smith), namely polyrhachis dives, also known as polyrhachis dives and polyrhachis dives, refers to insects of the genus polyrhachis dives (polyrhachis pp.) of the family Formicidae (Formicidae), and is distributed in Burma, Vietnam, Cambodia, Srilan, Thailand, Malaysia, Philippine southeast Asia countries, Japan, Australia, Babya New Guinea; in China, the Chinese medicinal materials are distributed in Hebei, Shandong, Zhejiang, Anhui, Shanghai, Fujian, Guangdong, Guangxi, Guizhou, Hunan, Hainan, Taiwan, hong Kong, Macao, Gansu, Yunnan and other places. The polyrhachis vicina Roger is one of nearly 20 kinds of ants clinically applied in Chinese medicine, the length of the body of the polyrhachis vicina Roger is 5.3-6.3 mm, the body is black, sometimes has brown color, and is golden and soft in the abdomen chest and the back abdomen, the head is sparse in soft hair, and the back abdomen is silver gray. The contact is far away from the lip base. The anterior dorsal aspect of the anterior sternum and the dorsal aspect of the thoracic and abdominal crura have 2 straight long spines respectively. The anterior chest and back plate extends forward and outward and slightly bends downward. The thoracico-abdominal back plates are upright, separated and bent to the outside. The two side angles at the top end of the abdominal handle knot are respectively provided with a long spine bent towards the back abdomen, and 2-3 small teeth are arranged between the spines; the posterior abdomen is short.
The polyrhachis vicina roger is rich in protein, amino acid, vitamin, trace elements and the like, has antifungal activity, and has long been recognized by people for both food and medicine. However, the natural polyrhachis vicina roger in different producing areas emphasizes the problem of high metal content, is directly eaten without being processed, and has non-trivial harm.
Therefore, how to reduce the content of heavy metal in the polyrhachis vicina roger is a problem which needs to be solved by the technical personnel in the field.
Disclosure of Invention
In view of the above, the present invention provides a method for reducing the content of heavy metals in polyrhachis vicina roger.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method for reducing the content of heavy metal in polyrhachis vicina Roger comprises the following steps:
soaking polyrhachis vicina Roger in water, spin-drying, adsorbing with phytic acid solution, cleaning, and drying to obtain polyrhachis vicina Roger with low heavy metal content.
Has the advantages that: the phytic acid solution can adsorb heavy metal elements in the polyrhachis vicina Roger, does not influence the dissolution of nutrient substances contained in the polyrhachis vicina Roger, and retains the nutrient components of the polyrhachis vicina Roger to the maximum extent.
Preferably, the polyrhachis vicina roger is soaked in water at the temperature of 40-50 ℃ for 2-3 hours; and the mass ratio of the water to the polyrhachis vicina roger is (6-8) to 1.
Preferably, stirring is carried out simultaneously in the soaking process, and the stirring speed is 40-60 r/min.
Preferably, the concentration of the phytic acid solution is 25-30%; the liquid-solid ratio in the adsorption process is (6-8): 1.
Preferably, stirring is carried out simultaneously in the adsorption process, and the stirring speed is 40-60 r/min.
Has the advantages that: the concentration of the phytic acid solution and the liquid-solid ratio in the adsorption process can adsorb heavy metal elements in the polyrhachis vicina roger to the maximum extent, and the phytic acid solution cannot be wasted on the premise of ensuring the adsorption rate.
Preferably, the adsorption temperature is 40-50 ℃, and the adsorption time is 2-3 h.
Has the advantages that: the invention can ensure that the adsorption of heavy metal in the polyrhachis vicina Roger can be completed within 2-3h under the condition of 40-50 ℃, the protein in the polyrhachis vicina Roger can not be denatured at the temperature, and the nutrition loss is reduced.
Preferably, the drying is vacuum drying, the drying temperature is 55-65 ℃, and the vacuum degree is-0.08 MPa.
Has the advantages that: the vacuum drying can separate out the residual water and solution in the soaked or adsorbed polyrhachis vicina Roger, and reduce the influence of the residual heavy metal on the polyrhachis vicina Roger product.
Preferably, the water content of the dried material is less than or equal to 8 percent.
According to the technical scheme, compared with the prior art, the method for reducing the heavy metal content of the polyrhachis vicina roger can obviously reduce the heavy metal in the polyrhachis vicina roger, particularly lead and manganese are most obvious, and lead and arsenic completely meet the general requirements of GB16740-2014 health-care food. The polyrhachis vicina Roger treated by the method can be used as a raw material of health food, and provides a basis for the domestic pure ant preparation industry and the industrial development of ants.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
A method for reducing the content of heavy metal in polyrhachis vicina Roger comprises the following steps:
1. soaking
Adding 280L of purified water into a 300L soaking reaction kettle, adding 40kg of preliminarily selected dry polyrhachis vicina Roger raw material at the rotating speed of 40-60r/min, heating to 45 ℃, and soaking for 2 hours under heat preservation.
2. Separation of
Cooling the soaked materials to 28-30 ℃, putting the materials into a 120-mesh filter bag, and carrying out solid-liquid separation by centrifugation. Transferring the filtrate into a storage tank after the centrifugation is finished so as to be used as raw materials for preparing other products; washing the filter residue (namely the solid polyrhachis vicina Roger) with water, spin-drying, and collecting in a material barrel for later use.
3. Adsorption
Transferring 280L of phytic acid solution with the mass concentration of 25% into a 300L adsorption reaction kettle, feeding 40kg of dried polyrhachis vicina Roger at the rotating speed of 40-60r/min, heating to 45 ℃, and carrying out adsorption reaction for 2 hours.
4. Stripping and washing
Cooling the adsorbed material to 28-30 deg.C, placing into 120 mesh filter bag, and performing solid-liquid separation with centrifuge. Transferring the filtrate to a mother liquor storage tank for recycling after the centrifugation is finished; and (3) repeatedly cleaning filter residues (namely the solid matter polyrhachis vicina Roger), spin-drying and collecting in a material barrel.
5. Drying
And (3) placing the dried solid matter polyrhachis vicina Roger in a vacuum drying oven, and drying under the conditions of vacuum degree of-0.08 MPa and drying temperature of 60 ℃ until the moisture of the material is less than or equal to 8 percent to obtain the polyrhachis vicina Roger with low heavy metal content.
Table 1 shows the comparison before and after adsorption of polyrhachis vicina roger and the reduction rate of heavy metals in example 1.
Table 1:
| lead mg/kg | Arsenic mg/kg | Cadmium mg/kg | Manganese mg/kg | |
| Before adsorption | 5.34 | 0.97 | 0.64 | 277，6 |
| After adsorption | 1.51 | 0.70 | 0.10 | 25.1 |
| 1.59 | 0.77 | 0.15 | 28.7 | |
| 1.62 | 0.72 | 0.12 | 29.3 | |
| Mean value | 1.57 | 0.73 | 0.12 | 27.7 |
| The reduction rate% | 70.6 | 24.7 | 81.3 | 90.0 |
Three test results under the condition that the value after adsorption is unchanged as the process condition
As can be seen from Table 1, the test results of the invention are feasible, reliable and good in stability. The heavy metals in the adsorbed polyrhachis vicina Roger are all obviously reduced, particularly the lead and the manganese are most obvious. The treated polyrhachis vicina Roger raw material can be used as a raw material of health food, wherein lead and arsenic completely meet the general requirements of GB16740-2014 health food.
Example 2
A method for reducing the content of heavy metal in polyrhachis vicina Roger comprises the following steps:
1. soaking
Adding 240L of purified water into a 300L soaking reaction kettle, adding 40kg of preliminarily selected dry polyrhachis vicina Roger raw material at the rotating speed of 40-60r/min, heating to 40 ℃, and soaking for 2 hours under heat preservation.
2. Separation of
Cooling the soaked materials to 28-30 ℃, putting the materials into a 120-mesh filter bag, and carrying out solid-liquid separation by centrifugation. Transferring the filtrate into a storage tank after the centrifugation is finished so as to be used as raw materials for preparing other products; and (3) cleaning filter residues (namely solid matters of the polyrhachis vicina roger), spin-drying the filter residues, and collecting the filter residues in a material barrel for later use.
3. Adsorption
Transferring 280L of phytic acid solution with the mass concentration of 30% into a 300L adsorption reaction kettle, feeding 40kg of dried polyrhachis vicina Roger at the rotating speed of 40-60r/min, heating to 43 ℃, and carrying out adsorption reaction for 2 hours.
4. Stripping and washing
Cooling the adsorbed material to 28-30 deg.C, placing into 120 mesh filter bag, and performing solid-liquid separation with centrifuge. Transferring the filtrate to a mother liquor storage tank for recycling after the centrifugation is finished; and (3) repeatedly cleaning filter residues (namely the solid matter polyrhachis vicina Roger), spin-drying and collecting in a material barrel.
5. Drying
And (3) placing the dried solid matter polyrhachis vicina Roger in a vacuum drying oven, and drying under the conditions of vacuum degree of-0.08 MPa and drying temperature of 65 ℃ until the moisture of the material is less than or equal to 8 percent to obtain the polyrhachis vicina Roger with low heavy metal content.
Example 3
A method for reducing the content of heavy metal in polyrhachis vicina Roger comprises the following steps:
1. soaking
Adding 240L of purified water into a 300L soaking reaction kettle, adding 30kg of preliminarily selected dry polyrhachis vicina Roger raw material at the rotating speed of 40-60r/min, heating to 50 ℃, and soaking for 2 hours under heat preservation.
2. Separation of
Cooling the soaked materials to 28-30 ℃, putting the materials into a 120-mesh filter bag, and carrying out solid-liquid separation by centrifugation. Transferring the filtrate into a storage tank after the centrifugation is finished so as to be used as raw materials for preparing other products; and (3) cleaning filter residues (namely solid matters of the polyrhachis vicina roger), spin-drying the filter residues, and collecting the filter residues in a material barrel for later use.
3. Adsorption
Transferring 280L of phytic acid solution with the mass concentration of 28% into a 300L adsorption reaction kettle, feeding 40kg of dried polyrhachis vicina Roger at the rotating speed of 40-60r/min, heating to 40 ℃, and carrying out adsorption reaction for 2 hours.
4. Stripping and washing
Cooling the adsorbed material to 28-30 deg.C, placing into 120 mesh filter bag, and performing solid-liquid separation with centrifuge. Transferring the filtrate to a mother liquor storage tank for recycling after the centrifugation is finished; and (3) repeatedly cleaning filter residues (namely the solid matter polyrhachis vicina Roger), spin-drying and collecting in a material barrel.
5. Drying
And (3) placing the dried solid matter polyrhachis vicina Roger in a vacuum drying oven, and drying under the conditions of vacuum degree of-0.08 MPa and drying temperature of 55 ℃ until the moisture of the material is less than or equal to 8 percent to obtain the polyrhachis vicina Roger with low heavy metal content.
Example 4
A method for reducing the content of heavy metal in polyrhachis vicina Roger comprises the following steps:
1. soaking
Adding 225L of purified water into a 300L soaking reaction kettle, adding 30kg of preliminarily selected dry polyrhachis vicina Roger raw material at the rotating speed of 40-60r/min, heating to 47 ℃, and soaking for 2 hours under heat preservation.
2. Separation of
Cooling the soaked materials to 28-30 ℃, putting the materials into a 120-mesh filter bag, and carrying out solid-liquid separation by centrifugation. Transferring the filtrate into a storage tank after the centrifugation is finished so as to be used as raw materials for preparing other products; and (3) cleaning filter residues (namely solid matters of the polyrhachis vicina roger), spin-drying the filter residues, and collecting the filter residues in a material barrel for later use.
3. Adsorption
Transferring 280L of phytic acid solution with the mass concentration of 26% into a 300L adsorption reaction kettle, feeding 40kg of dried polyrhachis vicina Roger at the rotating speed of 40-60r/min, heating to 50 ℃, and carrying out adsorption reaction for 2 hours.
4. Stripping and washing
Cooling the adsorbed material to 28-30 deg.C, placing into 120 mesh filter bag, and performing solid-liquid separation with centrifuge. Transferring the filtrate to a mother liquor storage tank for recycling after the centrifugation is finished; and (3) repeatedly cleaning filter residues (namely the solid matter polyrhachis vicina Roger), spin-drying and collecting in a material barrel.
5. Drying
And (3) placing the dried solid matter polyrhachis vicina Roger in a vacuum drying oven, and drying under the conditions of vacuum degree of-0.08 MPa and drying temperature of 58 ℃ until the moisture of the material is less than or equal to 8 percent to obtain the polyrhachis vicina Roger with low heavy metal content.
Example 5
A method for reducing the content of heavy metal in polyrhachis vicina Roger comprises the following steps:
1. soaking
Adding 260L of purified water into a 300L soaking reaction kettle, adding 40kg of preliminarily selected dry polyrhachis vicina Roger raw material at the rotating speed of 40-60r/min, heating to 43 ℃, and soaking for 2 hours under heat preservation.
2. Separation of
Cooling the soaked materials to 28-30 ℃, putting the materials into a 120-mesh filter bag, and carrying out solid-liquid separation by centrifugation. Transferring the filtrate into a storage tank after the centrifugation is finished so as to be used as raw materials for preparing other products; and (3) cleaning filter residues (namely solid matters of the polyrhachis vicina roger), spin-drying the filter residues, and collecting the filter residues in a material barrel for later use.
3. Adsorption
Transferring 280L of phytic acid solution with the mass concentration of 29% into a 300L adsorption reaction kettle, feeding 40kg of dried polyrhachis vicina Roger at the rotating speed of 40-60r/min, heating to 48 ℃, and carrying out adsorption reaction for 2 hours.
4. Stripping and washing
Cooling the adsorbed material to 28-30 deg.C, placing into 120 mesh filter bag, and performing solid-liquid separation with centrifuge. Transferring the filtrate to a mother liquor storage tank for recycling after the centrifugation is finished; and (3) repeatedly cleaning filter residues (namely the solid matter polyrhachis vicina Roger), spin-drying and collecting in a material barrel.
5. Drying
And (3) placing the dried solid matter polyrhachis vicina Roger in a vacuum drying oven, and drying under the conditions of vacuum degree of-0.08 MPa and drying temperature of 63 ℃ until the moisture of the material is less than or equal to 8 percent to obtain the polyrhachis vicina Roger with low heavy metal content.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. A method for reducing the heavy metal content of polyrhachis vicina Roger is characterized by comprising the following steps: soaking polyrhachis vicina Roger in water, spin-drying, adsorbing with phytic acid solution, cleaning, and drying to obtain polyrhachis vicina Roger with low heavy metal content.
2. The method for reducing the heavy metal content of polyrhachis vicina roger according to claim 1, wherein the polyrhachis vicina roger is soaked in water at the temperature of 40-50 ℃ for 2-3 h; and the mass ratio of the water to the polyrhachis vicina roger is (6-8) to 1.
3. The method for reducing the heavy metal content of polyrhachis vicina according to claim 1, wherein the phytic acid solution has a mass concentration of 25-30%; the mass ratio of liquid to solid in the adsorption process is (6-8) to 1.
4. The method for reducing the content of the heavy metal in the polyrhachis vicina according to claim 1, wherein the adsorption temperature is 40-50 ℃ and the adsorption time is 2-3 h.
5. The method for reducing the heavy metal content of polyrhachis vicina according to claim 1, wherein the drying is vacuum drying, and the temperature is 55-65 ℃ and the vacuum degree is-0.08 MPa.
6. The method for reducing the heavy metal content of polyrhachis vicina according to claim 1, wherein the dried material contains less than or equal to 8% of water.
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2021
- 2021-01-04 CN CN202110002909.0A patent/CN112674261A/en active Pending
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