CN103125582A - Pseudosciaena crocea rapid-freezing preservation process - Google Patents
Pseudosciaena crocea rapid-freezing preservation process Download PDFInfo
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- CN103125582A CN103125582A CN2013100844462A CN201310084446A CN103125582A CN 103125582 A CN103125582 A CN 103125582A CN 2013100844462 A CN2013100844462 A CN 2013100844462A CN 201310084446 A CN201310084446 A CN 201310084446A CN 103125582 A CN103125582 A CN 103125582A
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- yellow croaker
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Abstract
The invention discloses a pseudosciaena crocea rapid-freezing preservation process in which liquid alcohol is used as a refrigerant. A complete set of pseudosciaena crocea rapid-freezing preservation process is formed through the following steps of: washing, sterilizing, rinsing, leachating, packaging, locating, rapid freezing, rinsing, leachating, slow freezing and the like. The rapid-freezing preservation process is small in ice crystal formed on pseudosciaena crocea and capable of well keeping the quality of the pseudosciaena crocea, effectively preventing the eyes of the pseudosciaena crocea from whitening and keeping favorable appearance quality of the pseudosciaena crocea.
Description
Technical field
The present invention relates to the preservation technique field, be specifically related to a kind of large yellow croaker quick-freezing fresh-keeping technique.
Background technology
Large yellow croaker is the CHINESE OFFSHORE Main Commercial Fishes, is one of tradition " four large marine products " (large yellow croaker, little yellow croaker, hairtail, cuttlefish).Fine and tender taste is delicious, protein is high, cholesterol is low, and nutritive value and economic worth are high, and deeply being subjected at home and abroad, the consumer favors.
In recent years, seawater cage culture develops rapidly, and cultured large yellow croaker output is increasing, and the production and marketing contradiction has become the principal element that restricts the large yellow croaker industry development, and the fresh-keeping processing problems of the thing followed needs to be resolved hurrily.
Present large yellow croaker is take marketing fresh as main, and converted products is processed into dried product and tin product on a small quantity take frozen product as main.Traditional freezing method has air freezing process, tunnel type freezing process and dull and stereotyped freezing process, and these freezing method are refrigerant mainly with gas, and freezing speed is slow.The large yellow croaker quick-freeze craft that generally adopts at present is directly to put into plate freezer after the large yellow croaker packing, put into freezer after freezing and preserve, this processing method can cause: 1, in freezing and storage, protein frozen sex change, fat oxidation and color and luster, the bad change of local flavor occur more easily; 2, the ice crystal volume that forms is large, and compressing causes cell wall rupture, and the rear nutrition leak that thaws is more serious; 3, solidification point and time are controlled badly, cause Vitrea freezing and eyes are bleached, and have a strong impact on exterior quality.
Summary of the invention
The object of the invention is to overcome the deficiency that the above-mentioned background technology is mentioned, provide a kind of with the quick freezing method of liquid alcohol as refrigerant, and in conjunction with location, the slow new process such as freeze, keep to greatest extent the quality of large yellow croaker in the snap frozen large yellow croaker.
Technical scheme of the present invention is as follows:
A kind of large yellow croaker quick-freezing fresh-keeping technique specifically comprises the following steps:
A kind of large yellow croaker quick-freezing fresh-keeping technique is characterized in that, specifically comprises the following steps:
(1) cleaning and sterilization: fresh large yellow croaker is immersed in the Ozone Water of its 5-10 times volume and cleans 5～10min, water temperature is controlled at 0～10 ℃;
(2) rinsing: the large yellow croaker after cleaning and sterilization is placed in through the cooled pure water 2～3min of sterilization, and water temperature is controlled at 0～4 ℃;
(3) draining: the large yellow croaker after rinsing is put into sieve, is placed in the refrigerating box of 0～4 ℃, standing 3～5min;
(4) packing: the vacuum bag of upwards packing into of the large yellow croaker head after draining, carry out the twice sealing after vacuumizing fully;
(5) location: punch below packaged large yellow croaker afterbody one side sealing line, fasten a heavy stone roller, the sealing line top punching of large yellow croaker head one side, tether;
(6) quick-frozen: will hang through the large yellow croaker of above-mentioned steps and be placed in the alcohol 10～15min of-60～-70 ℃, and guarantee afterbody in process down, head-up, the alcohol liquid level had not just had gill cover edge;
(7) rinsing: the large yellow croaker that quick-frozen is good is inserted rinsing 10～30s in the cold water of 0～4 ℃;
(8) drain: the large yellow croaker after rinsing hangs 20-40s;
(9) slow freezing: the large yellow croaker after draining is put into Temperature Setting at the refrigerator 6-10h of-10～-13 ℃;
(10) storage: will delay in the freezer that large yellow croaker after freezing moves into-18～-30 ℃ and preserve.
In step (1), the concentration of Ozone Water is not less than 0.5mg/L.
Sieve in step (3) is plastic screen, and sieve diameter is 2～5mm.
In step (4), vacuum bag is the polyethylene vacuum bag, and its length is 40～60cm, and width is 10～15cm, and thickness is 0.18～0.25mm.
The present invention is to adopt liquid alcohol as the quick freezing method of refrigerant, again in conjunction with location, the slow new technology such as freeze, formed the complete large yellow croaker quick-freezing fresh-keeping technique of cover, adopt the large yellow croaker of this kind method of freezing quick-frozen, the ice crystal that forms is little, can well keep the quality of large yellow croaker, can prevent effectively that also the flake eyeball from bleaching, keep good outward appearance.
The specific embodiment
Embodiment:
(1) cleaning and sterilization: the middle 5～10min of cleaning of Ozone Water (concentration is not less than 0.5mg/L) that fresh large yellow croaker is immersed in its 5 times of volumes, water temperature is controlled at 0～10 ℃, to remove foul and the mucus of fish surface, kill most of bacterium that carry the fish surface;
(2) rinsing: the large yellow croaker after cleaning and sterilization is placed in through the cooled pure water 2～3min of sterilization, and water temperature is controlled at 0～4 ℃, removes the part cleaning fluid that remains in the fish surface, reaches simultaneously the purpose of precooling;
(3) draining: the large yellow croaker after rinsing is put into the plastic screen that is full of sieve aperture, and sieve diameter 2～5mm is placed in plastic screen the refrigerating box of 0～4 ℃, and standing 3～5min drains the moisture of fish surface;
(4) packing: the polyethylene vacuum bag of upwards packing into of the large yellow croaker head after draining, vacuum bag length 40～60cm, width 10～15cm, thickness 0.18～0.25mm, sealing after adopting vacuum packing machine to vacuumize fully is the sealing of guaranteeing to seal, and carries out the twice sealing;
(5) location: punch below packaged large yellow croaker afterbody one side sealing line, fasten the heavy stone roller of a metal with rope, when guaranteeing that large yellow croaker is inserted liquid coolant, afterbody can be vertically downward, the sealing line top punching of large yellow croaker head one side, hitch with rope, hang when being convenient to quick-frozen;
(6) quick-frozen: inject alcohol in liquid instant freezer refrigerant container, liquid level container height 2/3～4/5 between, open liquid instant freezer switch, the temperature of setting alcohol is-60 ℃～-70 ℃, when the alcohol temperature reaches design temperature, the large yellow croaker that packing is had good positioning is inserted in alcohol, afterbody down, head-up, when the alcohol liquid level had not just had gill cover edge, the fixed packet pack, the covered container lid, quick-frozen begins, after 10～15min, quick-frozen is completed, the central temperature of the following part of gill cover this moment is lower than-18 ℃, the above part of the gill cover is fully charge not also, flake is still black,
(7) rinsing: the large yellow croaker that quick-frozen is good is inserted rinsing 10～30s in the cold water of 0～4 ℃, removes the alcohol that remains in external packing;
(8) drain: the large yellow croaker after rinsing hangs 20-40s, drains the moisture in packaging bag;
(9) slow freezing: the large yellow croaker after draining is put into the refrigerator of pre-set temperature, refrigerator temperature is set as-10～-13 ℃, standing time 6-10h, the above part of gill cover this moment is fully charge just, the flake eyeball is still black, during this period of time not yet obviously grow up with the ice crystal that macrura reevesii body part muscle forms, can not destroy the matter structure of muscle;
(10) the slow large yellow croaker of freezing after good moves in the freezer of-18～-30 ℃ and preserves, through the large yellow croaker after slow freezing, although reserve temperature lower than-13 ℃, flake still can keep black, can not bleach.
Adopt the large yellow croaker of this technique quick-frozen, can well keep the quality of large yellow croaker, can prevent effectively that also the flake eyeball from bleaching, keep good exterior quality.
The above is preferred embodiment of the present invention, but the present invention should not be confined to the disclosed content of this embodiment.So everyly do not break away from the equivalence of completing under spirit disclosed in this invention or revise, all falling into the scope of protection of the invention.
Claims (4)
1. a large yellow croaker quick-freezing fresh-keeping technique, is characterized in that, specifically comprises the following steps:
(1) cleaning and sterilization: fresh large yellow croaker is immersed in the Ozone Water of its 5-10 times volume and cleans 5～10min, water temperature is controlled at 0～10 ℃;
(2) rinsing: the large yellow croaker after cleaning and sterilization is placed in through the cooled pure water 2～3min of sterilization, and water temperature is controlled at 0～4 ℃;
(3) draining: the large yellow croaker after rinsing is put into sieve, is placed in the refrigerating box of 0～4 ℃, standing 3～5min;
(4) packing: the vacuum bag of upwards packing into of the large yellow croaker head after draining, carry out the twice sealing after vacuumizing fully;
(5) location: punch below packaged large yellow croaker afterbody one side sealing line, fasten a heavy stone roller, the sealing line top punching of large yellow croaker head one side, tether;
(6) quick-frozen: will be placed in through the large yellow croaker of above-mentioned steps the alcohol 10～15min of-60～-70 ℃, guarantee afterbody in process vertically downward, head-up, the alcohol liquid level had not just had gill cover edge;
(7) rinsing: the large yellow croaker that quick-frozen is good is inserted rinsing 10～30s in the cold water of 0～4 ℃;
(8) drain: the large yellow croaker after rinsing hangs 20-40s;
(9) slow freezing: the large yellow croaker after draining is put into Temperature Setting at the refrigerator 6-10h of-10～-13 ℃;
(10) storage: will delay in the freezer that large yellow croaker after freezing moves into-18～-30 ℃ and preserve.
2. large yellow croaker quick-freezing fresh-keeping technique according to claim 1, is characterized in that, in step (1), the concentration of Ozone Water is not less than 0.5mg/L.
3. large yellow croaker quick-freezing fresh-keeping technique according to claim 1, is characterized in that, the sieve in step (3) is plastic screen, and sieve diameter is 2～5mm.
4. large yellow croaker quick-freezing fresh-keeping technique according to claim 1, is characterized in that, in step (4), vacuum bag is the polyethylene vacuum bag, and its length is 40～60cm, and width is 10～15cm, and thickness is 0.18～0.25mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013100844462A CN103125582A (en) | 2013-03-15 | 2013-03-15 | Pseudosciaena crocea rapid-freezing preservation process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013100844462A CN103125582A (en) | 2013-03-15 | 2013-03-15 | Pseudosciaena crocea rapid-freezing preservation process |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103976005A (en) * | 2014-05-06 | 2014-08-13 | 浙江工商大学 | Composite fresh-keeping method for large yellow croaker |
| CN110960077A (en) * | 2018-09-30 | 2020-04-07 | 佛山市顺德区美的电热电器制造有限公司 | Cooking appliance and control method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101919433A (en) * | 2009-06-11 | 2010-12-22 | 天津科技大学 | Fillet freezing method |
| CN102150698A (en) * | 2011-03-02 | 2011-08-17 | 福州日兴水产食品有限公司 | Freshness preservation method of abalone |
| CN102511538A (en) * | 2012-01-13 | 2012-06-27 | 福建省宁德市华洋水产有限公司 | Pseudosciaena crocea ice temperature fresh-keeping method |
| CN102919336A (en) * | 2011-08-10 | 2013-02-13 | 重庆市合川区合双科技有限公司 | Frozen yellow croaker |
-
2013
- 2013-03-15 CN CN2013100844462A patent/CN103125582A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101919433A (en) * | 2009-06-11 | 2010-12-22 | 天津科技大学 | Fillet freezing method |
| CN102150698A (en) * | 2011-03-02 | 2011-08-17 | 福州日兴水产食品有限公司 | Freshness preservation method of abalone |
| CN102919336A (en) * | 2011-08-10 | 2013-02-13 | 重庆市合川区合双科技有限公司 | Frozen yellow croaker |
| CN102511538A (en) * | 2012-01-13 | 2012-06-27 | 福建省宁德市华洋水产有限公司 | Pseudosciaena crocea ice temperature fresh-keeping method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103976005A (en) * | 2014-05-06 | 2014-08-13 | 浙江工商大学 | Composite fresh-keeping method for large yellow croaker |
| CN103976005B (en) * | 2014-05-06 | 2015-11-18 | 浙江工商大学 | A kind of composite fresh-keeping method of large yellow croaker |
| CN110960077A (en) * | 2018-09-30 | 2020-04-07 | 佛山市顺德区美的电热电器制造有限公司 | Cooking appliance and control method thereof |
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Application publication date: 20130605 |