CN202881231U - Continuous subcritical reaction device for hydrolysis of ethyl ester fish oil - Google Patents
Continuous subcritical reaction device for hydrolysis of ethyl ester fish oil Download PDFInfo
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- CN202881231U CN202881231U CN 201220629614 CN201220629614U CN202881231U CN 202881231 U CN202881231 U CN 202881231U CN 201220629614 CN201220629614 CN 201220629614 CN 201220629614 U CN201220629614 U CN 201220629614U CN 202881231 U CN202881231 U CN 202881231U
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 88
- 235000021323 fish oil Nutrition 0.000 title claims abstract description 26
- 125000004494 ethyl ester group Chemical group 0.000 title claims abstract description 23
- 230000007062 hydrolysis Effects 0.000 title claims abstract description 23
- 238000006460 hydrolysis reaction Methods 0.000 title claims abstract description 23
- 239000007788 liquid Substances 0.000 claims abstract description 42
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 36
- 238000001704 evaporation Methods 0.000 claims abstract description 23
- 238000011084 recovery Methods 0.000 claims abstract description 9
- 238000009833 condensation Methods 0.000 claims description 21
- 230000005494 condensation Effects 0.000 claims description 21
- 230000008020 evaporation Effects 0.000 claims description 21
- 238000001471 micro-filtration Methods 0.000 claims description 18
- 238000004064 recycling Methods 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 235000013305 food Nutrition 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000009776 industrial production Methods 0.000 abstract 1
- 125000005908 glyceryl ester group Chemical group 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 230000032050 esterification Effects 0.000 description 3
- 238000005886 esterification reaction Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000018612 quorum sensing Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerol Natural products OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000005815 base catalysis Methods 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- ITNKVODZACVXDS-YNUSHXQLSA-N ethyl (4Z,7Z,10Z,13Z,16Z,19Z)-docosahexaenoate Chemical compound CCOC(=O)CC\C=C/C\C=C/C\C=C/C\C=C/C\C=C/C\C=C/CC ITNKVODZACVXDS-YNUSHXQLSA-N 0.000 description 1
- -1 glycerin ester Chemical class 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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Abstract
The utility model provides a continuous subcritical reaction device for hydrolysis of ethyl ester fish oil and belongs to the technical field of foods. The continuous subcritical reaction device comprises a water storage tank, a reaction chamber provided with a water inlet and a water outlet, and a liquid storage tank provided with a liquid outlet, wherein a circulating structure which can be used for recovering water flowing out of the liquid outlet to the reaction chamber to be recycled is arranged between the liquid outlet of the liquid storage tank and the water inlet of the reaction chamber, a control structure which can be used for controlling pressure and temperature in the reaction chamber is also arranged on the reaction chamber, and a recovery structure which can be used for recovering ethanol separated from a condensation-evaporating tank is arranged on the condensation-evaporating tank. The continuous subcritical reaction kettle device provided by the utility model solves the technical problems that a traditional intermittent subcritical reaction device is inconvenient to sample and analyze, is also not beneficial to industrial production and the like and has the advantages of achieving the purpose of controlling hydrolysis temperature and pressure, effectively improving the production efficiency of products and the like.
Description
Technical field
The utility model belongs to food technology field, relates to a kind of continous way subcritical reaction device, particularly a kind of continous way subcritical reaction device for the hydrolysis of ethyl ester fish oil.
Background technology
Subcritical water is exactly under the pressure of appropriateness, and water is heated to more than 100 ℃, during the high temperature of critical temperature below 374 ℃, makes it still remain on liquid high-temperature high pressure water, this moment water character great changes will take place.Its polarity reduces on the one hand, and resistance to mass transfer diminishes, and the lipid-soluble substance dissolving power is increased; On the other hand, along with near stagnation point, the acid-base catalysis ability of water strengthens greatly, acid-base catalyzed reaction can occur to a certain extent, because its character is adjustable with temperature and pressure, can design as required the required condition of reaction simultaneously, the control reaction is carried out towards the direction of expectation.
Fish oil goods in the market mainly are divided into two classes: a class is the glyceryl ester type of EPA+DHA content about 20%～30%, and another kind of is the ethyl ester type of EPA+DHA content about 50%～70%.EPA+DHA ethyl ester type specific absorption is low, and may have potential safety hazard; The glyceryl ester type is the natural existence form of EPA and DHA, its stable in properties, is easily absorbed by human consumption.For natural glycerin ester type fish oil, the total effective content of its EPA+DHA is not less than 50%, the edible purpose that just can reach health care of human consumer.Therefore, preparation high-content EPA+DHA glyceride type fish oil product has potential application prospect.
In order to improve the problem of EPA+DHA content in the glyceryl ester type product, high-content ethyl ester fish oil can be hydrolyzed, separation and concentration EPA+DHA carries out esterification again and generates EPA+DHA glyceryl ester type product.But because its reaction requires High Temperature High Pressure, higher to equipment requirements, general existing autoclave carries out intermittent reaction, and sampling analysis is inconvenient, also is unfavorable for suitability for industrialized production; Simultaneously, contain certain density ethanol in the hydrolysis process in the water, present technique is not all removed ethanol, causes late phase reaction to be difficult to preparation high-content EPA+DHA glyceride type fish oil product.
Summary of the invention
The purpose of this utility model is to have the problems referred to above for existing technology, has proposed a kind of continous way subcritical reaction device for the hydrolysis of ethyl ester fish oil, and this reaction unit has the advantages that speed of reaction is fast, transformation efficiency is high.
The purpose of this utility model can realize by following technical proposal: a kind of continous way subcritical reaction device for the hydrolysis of ethyl ester fish oil, comprise water tank, reaction chamber and the liquid-storing box with liquid outlet with water-in and water outlet, be connected with charging pump one in turn by pipeline between the water-in of described water tank and reaction chamber, preheater one, reciprocating booster pump one, supercharging blower one and check valve one, be connected with in turn by pipeline between the water outlet of described liquid-storing box and reaction chamber and screw valve one, the condensation evaporation tank, screw valve two, charging pump two and screw valve three, be provided with the loop structure that can will be recycled to from the water that liquid outlet flows out the reaction chamber recycling between the liquid outlet of described liquid-storing box and the water-in of reaction chamber, also be provided with the control texture that can control reaction chamber internal pressure and temperature on the described reaction chamber, described condensation evaporation tank is provided with the recovery structure that can reclaim from the ethanol that the condensation evaporation tank separates.
Liquid is extracted out through charging pump one from water tank and is entered preheater one heating, with liquid heat to certain temperature, liquid is injected in the reaction chamber by supercharging blower one by reciprocating booster pump one again, so that the reaction indoor liquid reaches the state of subcritical water, in reaction chamber, carry out esterification, discharge reaction chamber through the water outlet of reaction chamber again, arrive the condensation evaporation tank with EPA+DHA glyceryl ester type product separation out, while ethanol in the condensation evaporation tank can evaporate through recovery structure and reclaim, left liquid enters liquid-storing box through charging pump two, circulates by loop structure and reacts.
At the above-mentioned continous way subcritical reaction device that is used for the hydrolysis of ethyl ester fish oil, described control texture comprises temperature regulator, pressure controller, temperature sensor and pressure transmitter, described temperature sensor and pressure transmitter all are arranged in the reaction chamber, described temperature sensor links to each other with temperature regulator by circuit, described pressure transmitter links to each other with pressure controller by circuit, and described pressure controller also links to each other with supercharging blower with reciprocating booster pump by circuit.By temperature sensor and indoor pressure and the temperature of pressure transmitter Quorum Sensing, signal is being reached on temperature regulator and the pressure controller, regulate according to actual needs control reaction chamber internal pressure and temperature.
At the above-mentioned continous way subcritical reaction device that is used for the hydrolysis of ethyl ester fish oil, described recovery structure comprises condenser, the vacuum pump that is communicated with successively by pipeline and screws valve four, described condensation evaporation tank has the air outlet of escaping for the ethanol of volatilization, described condenser is connected with the air outlet by pipeline, and described condenser and the pipeline of screwing between the valve four are provided with tensimeter one.Vacuum pump provides power that the ethanol that volatilizees in the condensation evaporation tank is extracted, and ethanol advanced condenser and condenses and be drop and reclaim, screw valve four can the trip switch vacuum pump and condenser between pipeline, guarantee that ethanol can have the sufficiently long time to condense at condenser.
At the above-mentioned continous way subcritical reaction device that is used for the hydrolysis of ethyl ester fish oil, described loop structure comprises by pipeline and is communicated with successively charging pump three, preheater two, reciprocating booster pump two, supercharging blower two and check valve two, described charging pump three is connected with the liquid outlet of liquid-storing box, and the water outlet two of described check valve two is connected with the water-in of reaction chamber.Charging pump three will be from out Liquid extracting in the liquid-storing box out to preheater two, preheater two heating liquids, liquid is injected in the reaction chamber by supercharging blower two by reciprocating booster pump two again, realize again reaction utilization of circulation, improve the EPA+DHA content of glyceryl ester type, cut the waste, saved production cost.
At the above-mentioned continous way subcritical reaction device that is used for the hydrolysis of ethyl ester fish oil, also be provided with successively micro-filtration one and charging pump four on the pipeline between described charging pump one and the preheater one, pipeline between described micro-filtration one and the charging pump one is provided with tensimeter two, and the pipeline between described charging pump four and the preheater one is provided with tensimeter three.Micro-filtration one can be filtered from container for storing liquid liquid out, and tensimeter two and tensimeter three can be monitored the operating power of charging pump one and charging pump four.
At the above-mentioned continous way subcritical reaction device that is used for the hydrolysis of ethyl ester fish oil, described charging pump two and screw between the valve three and by pipeline communication micro-filtration two is arranged, the pipeline between described charging pump two and the micro-filtration two is provided with tensimeter four.
At the above-mentioned continous way subcritical reaction device that is used for the hydrolysis of ethyl ester fish oil, the pipeline between described charging pump three and the preheater two is provided with tensimeter five.
Compared with prior art, this continous way subcritical reaction device that is used for the hydrolysis of ethyl ester fish oil has the following advantages:
1, by the pressure and temperature of temperature regulator and pressure controller control reaction indoor liquid, realize the control to hydrolysis temperature and pressure, the production efficiency and the transformation efficiency that effectively improve product are high.
2, by the air outlet at the condensation evaporation tank condenser that is communicated with it is set, ethanol is recycled, guarantee that liquid is interior without ethanol, thereby improve constantly the EPA+DHA content of glyceryl ester type when greatly being conducive to circulating reaction, also can effectively realize utilization of waste material simultaneously.
3, this device has used reciprocating booster pump liquid pressing technology, so that complete assembly can be realized continuous reaction, and very smooth, the quality product of production might as well.
Description of drawings
Fig. 1 is annexation synoptic diagram of the present utility model.
Among the figure, 111, water tank; 121, charging pump one; 122, tensimeter two; 123, micro-filtration one; 124, tensimeter three; 125, charging pump four; 131, preheater one; 141, reciprocating booster pump one; 142, supercharging blower one; 143, check valve one; 211, reaction chamber; 221, screw valve one; 231, condensation evaporation tank; 232, condenser; 233, tensimeter one; 234, screw valve four; 235, vacuum pump; 241, screw valve two; 251, charging pump two; 252, micro-filtration two; 253, tensimeter four; 261, screw valve three; 271, temperature regulator; 272, pressure controller; 311, liquid-storing box; 321, charging pump three; 322, tensimeter five; 331, preheater two; 341, reciprocating booster pump two; 342, supercharging blower two; 343, check valve two.
Embodiment
Below be specific embodiment of the utility model and by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiment.
As shown in Figure 1, a kind of continous way subcritical reaction device for the hydrolysis of ethyl ester fish oil, comprise water tank 111, reaction chamber 211 and the liquid-storing box 311 with liquid outlet with water-in and water outlet, be connected with charging pump 1 in turn by pipeline between the water-in of water tank 111 and reaction chamber 211, preheater 1, reciprocating booster pump 1, supercharging blower 1 and check valve 1, be connected with in turn by pipeline between the water outlet of liquid-storing box 311 and reaction chamber 211 and screw valve 1, condensation evaporation tank 231, screw valve 2 241, charging pump 2 251 and screw valve 3 261, be provided with the loop structure that can will be recycled to from the water that liquid outlet flows out reaction chamber 211 recyclings between the water-in of the liquid outlet of liquid-storing box 311 and reaction chamber 211, also be provided with the control texture that can control reaction chamber 211 internal pressures and temperature on the reaction chamber 211, condensation evaporation tank 231 is provided with the recovery structure that can reclaim from the ethanol that condensation evaporation tank 231 separates.
As shown in Figure 1, control texture comprises temperature regulator 271, pressure controller 272, temperature sensor and pressure transmitter, temperature sensor and pressure transmitter all are arranged in the reaction chamber 211, temperature sensor links to each other with temperature regulator 271 by circuit, pressure transmitter links to each other with pressure controller 272 by circuit, and pressure controller 272 also links to each other with supercharging blower with reciprocating booster pump by circuit.Pressure and temperature by in temperature sensor and the pressure transmitter Quorum Sensing chamber 211 are reaching signal on temperature regulator 271 and the pressure controller 272, regulate according to actual needs control reaction chamber 211 internal pressures and temperature.
As shown in Figure 1, recovery structure comprises condenser 232, the vacuum pump 235 that is communicated with successively by pipeline and screws valve 4 234, condensation evaporation tank 231 has the air outlet of escaping for the ethanol of volatilization, condenser 232 is connected with the air outlet by pipeline, condenser 232 and the pipeline of screwing between the valve 4 234 are provided with tensimeter 1, its pressure range 81-90KPa.Vacuum pump 235 provides power that the ethanol of volatilization in the condensation evaporation tank 231 is extracted, ethanol advanced condenser 232 and condenses and be drop and reclaim, screw valve 4 234 can trip switch vacuum pump 235 and condenser 232 between pipeline, guarantee that ethanol can have the sufficiently long time to condense at condenser 232.
As shown in Figure 1, loop structure comprises by pipeline and is communicated with successively charging pump 3 321, preheater 2 331, reciprocating booster pump 2 341, supercharging blower 2 342 and check valve 2 343, charging pump 3 321 is connected with the liquid outlet of liquid-storing box 311, and the water outlet two of check valve 2 343 is connected with the water-in of reaction chamber 211.Charging pump 3 321 will be from out Liquid extracting in the liquid-storing box 311 out to preheater 2 331, and preheater 2 331 heating liquids are injected liquid in the reaction chamber 211 by supercharging blower 2 342 by reciprocating booster pump 2 341 again, realizes again reaction of circulation.
Also be provided with successively micro-filtration 1 and charging pump 4 125 on the pipeline between charging pump 1 and the preheater 1, pipeline between micro-filtration 1 and the charging pump 1 is provided with tensimeter 2 122, and the pipeline between charging pump 4 125 and the preheater 1 is provided with tensimeter 3 124.Micro-filtration 1 can be filtered from container for storing liquid 111 liquid out, and tensimeter 2 122 and tensimeter 3 124 can be monitored the operating power of charging pump 1 and charging pump 4 125.Charging pump 2 251 and the pipeline of screwing between the valve 3 261 are provided with micro-filtration 2 252, and the pipeline between charging pump 2 251 and the micro-filtration 2 252 is provided with tensimeter 4 253.Pipeline between charging pump 3 321 and the preheater 2 331 is provided with tensimeter 5 322.
Liquid is extracted out through charging pump 1 from water tank 111 and is entered preheater one 131 heating, with liquid heat to certain temperature, liquid is injected in the reaction chamber 211 by supercharging blower 1 by reciprocating booster pump 1 again, pressure range reaches 10-30MPa, so that reaction chamber 211 interior liquid reach the state of subcritical reaction, in reaction chamber 211, carry out esterification, discharge reaction chamber 211 through the water outlet of reaction chamber 211 again, arrive condensation evaporation tank 231 with EPA+DHA glyceryl ester type product separation out, ethanol can evaporate through condenser 232 recovery in condensation evaporation tank 231 simultaneously, left liquid enters liquid-storing box 311 through charging pump 2 251, by charging pump 3 321 liquid in the liquid-storing box 311 is delivered to reaction chamber 211 again and carries out the continuous circulation reaction, thereby the EPA+DHA content of glyceryl ester type can be reached more than 50%.
Specific embodiment described herein only is to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Although this paper has more used water tank 111; Charging pump 1; Tensimeter 2 122; Micro-filtration 1; Tensimeter 3 124; Charging pump 4 125; Preheater 1; Reciprocating booster pump 1; Supercharging blower 1; Check valve 1; Reaction chamber 211; Screw valve 1; Condensation evaporation tank 231; Condenser 232; Tensimeter 1; Screw valve 4 234; Vacuum pump 235; Screw valve 2 241; Charging pump 2 251; Micro-filtration 2 252; Tensimeter 4 253; Screw valve 3 261; Temperature regulator 271; Pressure controller 272; Liquid-storing box 311; Charging pump 3 321; Tensimeter 5 322; Preheater 2 331; Reciprocating booster pump 2 341; Supercharging blower 2 342; Check valve 2 343 terms such as grade, but do not get rid of the possibility of using other term.Using these terms only is in order to describe more easily and explain essence of the present utility model; They are construed to any additional restriction all is contrary with the utility model spirit.
Claims (7)
1. one kind is used for the continous way subcritical reaction device that ethyl ester fish oil is hydrolyzed, it is characterized in that: comprise water tank (111), have the reaction chamber (211) of water-in and water outlet and have the liquid-storing box (311) of liquid outlet, be connected with charging pump one (121) in turn by pipeline between the water-in of described water tank (111) and reaction chamber (211), preheater one (131), reciprocating booster pump one (141), supercharging blower one (142) and check valve one (143), be connected with in turn by pipeline between the water outlet of described liquid-storing box (311) and reaction chamber (211) and screw valve one (221), condensation evaporation tank (231), screw valve two (241), charging pump two (251) and screw valve three (261), be provided with the loop structure that can will be recycled to from the water that liquid outlet flows out reaction chamber (211) recycling between the water-in of the liquid outlet of described liquid-storing box (311) and reaction chamber (211), also be provided with the control texture that can control reaction chamber (211) internal pressure and temperature on the described reaction chamber (211), described condensation evaporation tank (231) is provided with the recovery structure that can reclaim from the ethanol that condensation evaporation tank (231) separates.
2. the continous way subcritical reaction device for ethyl ester fish oil hydrolysis according to claim 1, it is characterized in that: described control texture comprises temperature regulator (271), pressure controller (272), temperature sensor and pressure transmitter, described temperature sensor and pressure transmitter all are arranged in the reaction chamber (211), described temperature sensor links to each other with temperature regulator (271) by circuit, described pressure transmitter links to each other with pressure controller (272) by circuit, and described pressure controller (272) also links to each other with supercharging blower with reciprocating booster pump by circuit.
3. the continous way subcritical reaction device for ethyl ester fish oil hydrolysis according to claim 1, it is characterized in that: described recovery structure comprises condenser (232), the vacuum pump (235) that is communicated with successively by pipeline and screws valve four (234), described condensation evaporation tank (231) has the air outlet of escaping for the ethanol of volatilization, described condenser (232) is connected with the air outlet by pipeline, and described condenser (232) and the pipeline of screwing between the valve four (234) are provided with tensimeter one (233).
4. the continous way subcritical reaction device for ethyl ester fish oil hydrolysis according to claim 1, it is characterized in that: described loop structure comprises by pipeline and is communicated with successively charging pump three (321), preheater two (331), reciprocating booster pump two (341), supercharging blower two (342) and check valve two (343), described charging pump three (321) is connected with the liquid outlet of liquid-storing box (311), and the water outlet two of described check valve two (343) is connected with the water-in of reaction chamber (211).
5. the continous way subcritical reaction device for ethyl ester fish oil hydrolysis according to claim 1, it is characterized in that: also be provided with successively micro-filtration one (123) and charging pump four (125) on the pipeline between described charging pump one (121) and the preheater one (131), pipeline between described micro-filtration one (123) and the charging pump one (121) is provided with tensimeter two (122), and the pipeline between described charging pump four (125) and the preheater one (131) is provided with tensimeter three (124).
6. the continous way subcritical reaction device for ethyl ester fish oil hydrolysis according to claim 1, it is characterized in that: described charging pump two (251) and screw between the valve three (261) and by pipeline communication micro-filtration two (252) is arranged, the pipeline between described charging pump two (251) and the micro-filtration two (252) is provided with tensimeter four (253).
7. the continous way subcritical reaction device for ethyl ester fish oil hydrolysis according to claim 4, it is characterized in that: the pipeline between described charging pump three (321) and the preheater two (331) is provided with tensimeter five (322).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220629614 CN202881231U (en) | 2012-11-26 | 2012-11-26 | Continuous subcritical reaction device for hydrolysis of ethyl ester fish oil |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220629614 CN202881231U (en) | 2012-11-26 | 2012-11-26 | Continuous subcritical reaction device for hydrolysis of ethyl ester fish oil |
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| CN202881231U true CN202881231U (en) | 2013-04-17 |
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| CN 201220629614 Expired - Fee Related CN202881231U (en) | 2012-11-26 | 2012-11-26 | Continuous subcritical reaction device for hydrolysis of ethyl ester fish oil |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103013674A (en) * | 2012-11-26 | 2013-04-03 | 浙江海洋学院 | Continuous subcritical reaction device for ethyl ester fish oil hydrolysis |
| CN103627759A (en) * | 2013-09-12 | 2014-03-12 | 郑州市中食农产品加工研究院 | Method for extracting and preparing active ingredients of fish roes |
-
2012
- 2012-11-26 CN CN 201220629614 patent/CN202881231U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103013674A (en) * | 2012-11-26 | 2013-04-03 | 浙江海洋学院 | Continuous subcritical reaction device for ethyl ester fish oil hydrolysis |
| CN103013674B (en) * | 2012-11-26 | 2014-07-02 | 浙江海洋学院 | Continuous subcritical reaction device for ethyl ester fish oil hydrolysis |
| CN103627759A (en) * | 2013-09-12 | 2014-03-12 | 郑州市中食农产品加工研究院 | Method for extracting and preparing active ingredients of fish roes |
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Granted publication date: 20130417 Termination date: 20151126 |