CN104885974A - Method for keeping crabs captured from sea alive without water - Google Patents
Method for keeping crabs captured from sea alive without water Download PDFInfo
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- CN104885974A CN104885974A CN201410824329.XA CN201410824329A CN104885974A CN 104885974 A CN104885974 A CN 104885974A CN 201410824329 A CN201410824329 A CN 201410824329A CN 104885974 A CN104885974 A CN 104885974A
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- crabs
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
- Y02A40/81—Aquaculture, e.g. of fish
Abstract
The invention discloses a method for keeping crabs captured from the sea alive without water. The method comprises the following steps: (1) accumulating and culturing the crabs: bundling large pincers of captured live sea crabs with plastic ropes or rubber strings, and placing the live sea crabs of which the pincers are bundled in seawater added with a live-keeping agent for 1-2 days; (2) cooling and anaesthetizing the live sea crabs in seawater in a classifying manner: firstly placing the live sea crabs which are accumulated and cultured in the seawater of 7-8 DEG C, soaking the live sea crabs in the seawater of 7-8 DEG C for 1-2 minutes, then placing the live sea crabs in the seawater of 1-2 DEG C, and soaking the live sea crabs in the seawater of 1-2 DEG C for 1-2 minutes; (3) packaging the live sea crabs: firstly paving a layer of oxygenates on the bottom of a packaging box, then putting a waterishlogged sponge on the oxygenates, arranging a layer of the live sea crabs on the sponge, then putting another waterishlogged sponge, arranging a layer of the live sea crabs, putting another waterishlogged sponge on the on the oxygenates, filling two layers of swimming crabs altogether in the packaging box, finally sealing the packaging box, and placing the sealed packaging box in the environment of 2-5 DEG C for preservation. The method disclosed by the invention is convenient to operate and low in cost, the survival rate of the crabs captured from the sea can be effectively increased, the survival time of the crabs captured from the sea can be effectively prolonged, the long-distance long-time live-keeping transportation of the crabs captured from the sea is realized in a waterless packaging form, the economic benefits are notable, and the method is suitable for popularization and application.
Description
Technical field
The present invention relates to aquatic products circulation technology field, especially relate to a kind of extra large crabbing waterless keep-alive method.
Background technology
Sea crabbing, such as swimming crab, mud crab, Sea crab etc., due to unique flavor, nutritious, the dark welcome by consumer, the huge market demand.But extra large crabbing is due to environmental change after catching, and the time-to-live is short, very easily dead rotten, mouthfeel and local flavor are deteriorated, and edible and economic worth reduces greatly.Therefore, extend the time-to-live of extra large crabbing, just can significantly improve the edible of extra large crabbing and economic worth.
Authorization Notice No. CN102084836B, discloses a kind of method for refreshing water-detacted live portunus tritubercularus in the Chinese patent of authorized announcement date 2012.12.19, comprises the steps: to purify in (1) Portunus trituberculatus Miers seawater; The seawater again Portunus trituberculatus Miers being put into 2 ~ 5 DEG C soaks 3 ~ 5 minutes, makes it be in narcosis, containing the stable vitamin C of 1 ‰ in the seawater of described 2 ~ 5 DEG C; (2) material which can retain moisture is put in 2 ~ 5 DEG C containing 1 ‰ stable vitamin C seawater in be dipped to saturated; (3) in the cavity in the middle of packing box, first put into oxygenation agent, then above oxygenation agent, lay one deck material which can retain moisture; Above material which can retain moisture, place Portunus trituberculatus Miers, above Portunus trituberculatus Miers, place one deck material which can retain moisture and second layer material which can retain moisture again, after having placed, packing box lid is covered.This preservation method has the following disadvantages: the seawater directly swimming crab being placed in 2 ~ 5 DEG C, and the temperature difference is too large, and crab does not adapt to unexpected environment, can produce disconnected foot even dead, be lowered into motility rate; Add the stress reaction that ascorbic vitamin C can only alleviate crab body in seawater, between crab picks up and packs from water, easily cause crab hypoxia death; Oxygenation agent is SODIUM PERCARBONATE, SODIUM PERCARBONATE poor stability, and easily decompose in transport and use procedure, active o content is reduced, and the excessive velocities of SODIUM PERCARBONATE releasing oxygen, causes waste in addition.
Summary of the invention
The present invention is the problems referred to above existing for the extra large crabbing keepalive method in order to solve prior art; provide a kind of easy to operate; with low cost; effectively can improve extra large crabbing survival rate and time-to-live, realize the extra large crabbing waterless keep-alive method of the long distance of extra large crabbing, long-time On Transportaion of Live with anhydrous packaged form.
To achieve these goals, the present invention is by the following technical solutions:
A kind of extra large crabbing waterless keep-alive method, comprises the following steps:
(1) store up: after the large chela plastic ties of the sea crab alive caught or rubber band are bundled, be placed in the seawater being added with live keeping agent and support 1 ~ 2 day temporarily.The large chela of the sea crab that lives is tied up to avoid mutually crushing between crab body, causes death, be also convenient to the manual operation of after-stage simultaneously; The object of storing up makes the excreta in crab body emptying body, and when avoiding preserving, crab body discharges excreta, causes microorganism amount reproduction, reduces the survival rate of crab body.
(2) classification anesthesia by freezing: the seawater first sea crab alive after storing up being placed in 7 ~ 8 DEG C soaks 1 ~ 2min, then the seawater putting into 1 ~ 2 DEG C soaks 1 ~ 2min.Adopt the method for classification anesthesia by freezing, have a narrow range of temperature, when can effectively avoid anaesthetizing crab body, produce the even dead phenomenon of disconnected foot because of excessive temperature differentials.
(3) pack: first layer overlay oxygenation agent bottom packing case, then on oxygenation agent, put a waterishlogged sponge, sponge is arranged last layer sea crab alive, put a waterishlogged sponge again, row's one deck sea crab alive, put a waterishlogged sponge, fill two-layer sea crab alive in packing box altogether, last joint sealing is also preserved under packing case being placed in 2 ~ 5 DEG C of environment.Oxygenation agent is placed in the bottom, just slowly can release oxygen when the water in sponge contacts with oxygenation agent, ensures sufficient oxygen supply, extends the keep-alive time of crab body.
As preferably, in step (1), the addition of live keeping agent is 3 ~ 4% of seawer quality.
As preferably, described live keeping agent is made up of the component of following mass percent: 5 ~ 10% magnesium sulfate, 1.5 ~ 3.5% potassium chloride, 2.5 ~ 6.5% gypsum, 7.5 ~ 15% Rosmarinic acids, 0.0025 ~ 0.0065% aldosterone, and surplus is water.Live keeping agent in the present invention is the key point extending the crab body time-to-live, and wherein magnesium sulfate is for promoting that crab body discharges excreta; Potassium chloride for maintaining osmotic pressure and acid base equilibrium in crab somatic cell, to extend the time-to-live; Gypsum can suppress neural stress reaction to a certain extent, reduces vasopermeability, thus suppresses the activity of crab; Rosmarinic acid can regulate the activity of various metabolic enzyme in crab body, reduces oxygen demand, increases the activity of antioxidase, thus improves the adaptive capacity stimulated anoxic when crab picks up packaging from water, improves survival rate; Aldosterone can suppress the metabolism of crab body, improves the adaptive capacity of crab environment to external world, contributes to extending the time-to-live.Live keeping agent scientific formulation in the present invention is reasonable, by the coordinated between each component, can extend the time-to-live of crab.
As preferably, in step (3), the laying depth of described oxygenation agent is 1 ~ 2cm.
As preferably, described oxygenation agent obtains by the following method: with oxygenation agent gross mass for benchmark, by 5 ~ 10% vermiculite powers, 10 ~ 15% microcrystalline celluloses, 2 ~ 5% low-substituted hydroxypropyl celluloses, 2 ~ 5% lactose, surplus is that the mass percentage proportioning of calper calcium peroxide takes each component, is pressed into tablet after each component being mixed.Oxygenation agent is another key point of the present invention, wherein calper calcium peroxide reacts after contacting with the water in sponge and generates oxygen and slaked lime, and the slaked lime Absorbable rod crab body generated breathes the carbonic acid gas produced, avoid the too low anoxic that causes of space oxygen concentration in packing box; There is in vermiculite power thousands of upper outside pore, there is good absorption, slowly-releasing and humidification, outside moisture slowly can be imported gradually the inside of oxygenation agent thus ensure that oxygenation agent can slowly and thoroughly disintegration, and vermiculite power can adsorb the oxygen thus the oxygen rate of release of effective control oxygenation agent that produce to improve the availability of oxygen; Microcrystalline cellulose plays the effect of binding agent; Low-substituted hydroxypropyl cellulose plays the effect of disintegrant; Vermiculite power is with the addition of in the present invention, but vermiculite power poor compressibility, can not direct tablet compressing, lactose compressibility is good, therefore add lactose in the present invention and not only efficiently solve the problem that vermiculite power directly can not carry out compressing tablet, the compacted density of oxygenation agent can also be improved, and make the oxygenation agent surface finishing that is pressed into attractive in appearance.
Therefore, the present invention has following beneficial effect:
(1) classification anesthesia by freezing is adopted to crab body, have a narrow range of temperature, when can effectively avoid anaesthetizing crab body, produce the even dead phenomenon of disconnected foot because of excessive temperature differentials;
(2) with the addition of live keeping agent in the seawater when storing up, and disclose the formula of live keeping agent, by the coordinated between component each in live keeping agent, the time-to-live of crab can be extended;
(3) optimize the formula of oxygenation agent and disclose the preparation method of oxygenation agent, ensureing that oxygenation agent under the prerequisite of disintegration completely, effectively can control the rate of release of oxygen, thus improve availability and the result of use of oxygenation agent;
(4) easy to operate, with low cost, greatly can improve extra large crabbing survival rate and time-to-live, realize the long distance of extra large crabbing, long-time On Transportaion of Live with anhydrous packaged form, remarkable in economical benefits.
Embodiment
Below by embodiment, the present invention will be further described.
In the present invention, if not refer in particular to, all percentage is unit of weight, and all devices and raw material all can be buied from market or the industry is conventional, and the method in following embodiment, if no special instructions, is this area conventional method.
Embodiment 1
(1) store up: after the large chela plastic ties of the sea crab alive (Portunus trituberculatus Miers) caught is bundled; the seawater being placed in the live keeping agent adding promising seawer quality 4% is supported 1 day temporarily; live keeping agent is made up of the component of following mass percent: 10% magnesium sulfate; 3.5% potassium chloride; 6.5% gypsum; 15% Rosmarinic acid, 0.0065% aldosterone, surplus is water.
(2) classification anesthesia by freezing: the seawater first sea crab alive after storing up being placed in 8 DEG C soaks 2min, then the seawater putting into 2 DEG C soaks 2min.
(3) pack: first bottom packing case, layer overlay thickness is the oxygenation agent of 2cm, then on oxygenation agent, put a waterishlogged sponge, sponge is arranged last layer sea crab alive, put a waterishlogged sponge again, row's one deck sea crab alive, put a waterishlogged sponge, two-layer Portunus trituberculatus Miers is filled altogether in packing box, last joint sealing is also preserved under packing case being placed in 5 DEG C of environment, wherein oxygenation agent obtains by the following method: with oxygenation agent gross mass for benchmark, by 10% vermiculite power, 15% microcrystalline cellulose, 5% low-substituted hydroxypropyl cellulose, 5% lactose, surplus is that the mass percentage proportioning of calper calcium peroxide takes each component, tablet is pressed into after each component being mixed.
Embodiment 2
(1) store up: after the large chela rubber band of the sea crab alive (Sea crab) caught is bundled; the seawater being placed in the live keeping agent adding promising seawer quality 3% is supported 2 days temporarily; live keeping agent is made up of the component of following mass percent: 5% magnesium sulfate; 1.5% potassium chloride; 2.5% gypsum; 7.5% Rosmarinic acid, 0.0025% aldosterone, surplus is water.
(2) classification anesthesia by freezing: the seawater first sea crab alive after storing up being placed in 7 DEG C soaks 1min, then the seawater putting into 1 DEG C soaks 1min.
(3) pack: first bottom packing case, layer overlay thickness is the oxygenation agent of 1cm, then on oxygenation agent, put a waterishlogged sponge, sponge is arranged last layer sea crab alive, put a waterishlogged sponge again, row's one deck sea crab alive, put a waterishlogged sponge, two-layer Sea crab is filled altogether in packing box, last joint sealing is also preserved under packing case being placed in 2 DEG C of environment, wherein oxygenation agent obtains by the following method: with oxygenation agent gross mass for benchmark, by 5% vermiculite power, 15% microcrystalline cellulose, 5% low-substituted hydroxypropyl cellulose, 5% lactose, surplus is that the mass percentage proportioning of calper calcium peroxide takes each component, tablet is pressed into after each component being mixed.
Embodiment 3
(1) store up: after the large chela plastic ties of the sea crab alive (mud crab) caught is bundled; the seawater being placed in the live keeping agent adding promising seawer quality 3.5% is supported 1.5 days temporarily; live keeping agent is made up of the component of following mass percent: 6% magnesium sulfate; 3% potassium chloride; 4% gypsum; 10% Rosmarinic acid, 0.005% aldosterone, surplus is water.
(2) classification anesthesia by freezing: the seawater first sea crab alive after storing up being placed in 7.5 DEG C soaks 1.5min, then the seawater putting into 1.5 DEG C soaks 1.5min.
(3) pack: first bottom packing case, layer overlay thickness is the oxygenation agent of 1.2cm, then on oxygenation agent, put a waterishlogged sponge, sponge is arranged last layer sea crab alive, put a waterishlogged sponge again, row's one deck sea crab alive, put a waterishlogged sponge, two-layer mud crab is filled altogether in packing box, last joint sealing is also preserved under packing case being placed in 3 DEG C of environment, wherein oxygenation agent obtains by the following method: with oxygenation agent gross mass for benchmark, by 6% vermiculite power, 12% microcrystalline cellulose, 3% low-substituted hydroxypropyl cellulose, 3% lactose, surplus is that the mass percentage proportioning of calper calcium peroxide takes each component, tablet is pressed into after each component being mixed.
The present invention is easy to operate; with low cost; method of the present invention is adopted to carry out keep-alive to extra large crabbing; the sea crabbing time-to-live reaches more than 72 hours (temperature 2 ~ 5 DEG C); after 72 hours, survival rate is more than 95% in keep-alive, and the keep-alive time extends greatly, realizes with anhydrous packaged form the live long distance of sea crab, long-time On Transportaion of Live; remarkable in economical benefits, is applicable to applying.
Above-described embodiment is one of the present invention preferably scheme, not does any pro forma restriction to the present invention, also has other variant and remodeling under the prerequisite not exceeding the technical scheme described in claim.
Claims (5)
1. an extra large crabbing waterless keep-alive method, is characterized in that, comprise the following steps:
(1) store up: after the large chela plastic ties of the sea crab alive caught or rubber band are bundled, be placed in the seawater being added with live keeping agent and support 1 ~ 2 day temporarily;
(2) classification anesthesia by freezing: the seawater first sea crab alive after storing up being placed in 7 ~ 8 DEG C soaks 1 ~ 2min, then the seawater putting into 1 ~ 2 DEG C soaks 1 ~ 2min;
(3) pack: first layer overlay oxygenation agent bottom packing case, then on oxygenation agent, put a waterishlogged sponge, sponge is arranged last layer sea crab alive, put a waterishlogged sponge again, row's one deck sea crab alive, put a waterishlogged sponge, fill two-layer sea crab alive in packing box altogether, last joint sealing is also preserved under packing case being placed in 2 ~ 5 DEG C of environment.
2. one according to claim 1 extra large crabbing waterless keep-alive method, is characterized in that, in step (1), the addition of live keeping agent is 3 ~ 4% of seawer quality.
3. one according to claim 1 and 2 extra large crabbing waterless keep-alive method; it is characterized in that; described live keeping agent is made up of the component of following mass percent: 5 ~ 10% magnesium sulfate; 1.5 ~ 3.5% potassium chloride; 2.5 ~ 6.5% gypsum; 7.5 ~ 15% Rosmarinic acids, 0.0025 ~ 0.0065% aldosterone, surplus is water.
4. one according to claim 1 extra large crabbing waterless keep-alive method, is characterized in that, in step (3), the laying depth of described oxygenation agent is 1 ~ 2cm.
5. the one sea crabbing waterless keep-alive method according to claim 1 or 4; it is characterized in that; described oxygenation agent obtains by the following method: with oxygenation agent gross mass for benchmark; by 5 ~ 10% vermiculite powers; 10 ~ 15% microcrystalline celluloses, 2 ~ 5% low-substituted hydroxypropyl celluloses, 2 ~ 5% lactose; surplus is that the mass percentage proportioning of calper calcium peroxide takes each component, is pressed into tablet after each component being mixed.
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| CN201410824329.XA CN104885974B (en) | 2014-12-26 | 2014-12-26 | A kind of extra large crabbing waterless keep-alive method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105706983A (en) * | 2016-03-16 | 2016-06-29 | 上海海洋大学 | Waterless keep-alive transportation method of live shrimps |
| CN105941596A (en) * | 2016-05-18 | 2016-09-21 | 青岛博智汇力生物科技有限公司 | Aquatic product temporary rearing and living keeping agent capable of removing heavy metal, use method and application |
| CN106106320A (en) * | 2016-08-01 | 2016-11-16 | 江苏大学 | A kind of oxygen slow release device for Acipenser Sinensis low temperature On Transportaion of Live device |
| CN106804516A (en) * | 2016-12-21 | 2017-06-09 | 浙江海洋大学 | A kind of method for improving the black crab long-distance transport survival rate of Burma |
| CN107223616A (en) * | 2016-03-23 | 2017-10-03 | 射阳县泰和水产品有限公司 | A kind of waterless keep-alive method of Portunus trituberculatus Miers |
| CN107996479A (en) * | 2017-12-04 | 2018-05-08 | 浙江海洋大学 | A kind of fresh-keeping and alive-keeping method of swimming crab |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105706983A (en) * | 2016-03-16 | 2016-06-29 | 上海海洋大学 | Waterless keep-alive transportation method of live shrimps |
| CN107223616A (en) * | 2016-03-23 | 2017-10-03 | 射阳县泰和水产品有限公司 | A kind of waterless keep-alive method of Portunus trituberculatus Miers |
| CN105941596A (en) * | 2016-05-18 | 2016-09-21 | 青岛博智汇力生物科技有限公司 | Aquatic product temporary rearing and living keeping agent capable of removing heavy metal, use method and application |
| CN106106320A (en) * | 2016-08-01 | 2016-11-16 | 江苏大学 | A kind of oxygen slow release device for Acipenser Sinensis low temperature On Transportaion of Live device |
| CN106106320B (en) * | 2016-08-01 | 2019-03-05 | 江苏大学 | A kind of oxygen slow release device for sturgeon low temperature On Transportaion of Live device |
| CN106804516A (en) * | 2016-12-21 | 2017-06-09 | 浙江海洋大学 | A kind of method for improving the black crab long-distance transport survival rate of Burma |
| CN107996479A (en) * | 2017-12-04 | 2018-05-08 | 浙江海洋大学 | A kind of fresh-keeping and alive-keeping method of swimming crab |
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