CN102599233A - Quick-frozen daylily making method - Google Patents
Quick-frozen daylily making method Download PDFInfo
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- CN102599233A CN102599233A CN2012101177495A CN201210117749A CN102599233A CN 102599233 A CN102599233 A CN 102599233A CN 2012101177495 A CN2012101177495 A CN 2012101177495A CN 201210117749 A CN201210117749 A CN 201210117749A CN 102599233 A CN102599233 A CN 102599233A
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Abstract
The invention belongs to the technical field of vegetable freezing and freshness preservation, and specifically relates to a quick-frozen daylily making method. The quick-frozen daylily making method comprises the steps of raw material screening, cleaning, scalding, color protecting, water draining, packaging, precooling, quick-freezing and freezing storage. According to the invention, a liquid immersion type quick-frozen technology is applied to the freshness preservation of daylily for the first time, therefore, the structure characteristics and nutritional components of daylily are kept maximumly; and through combining the scalding and the color protecting with the liquid immersion type quick-frozen technology, the problem that the previous daylily after being defrosted is easy to brown is solved; and in addition, equipment adopted in the invention is easy to control, and the method is low in energy consumption and suitable for the mass production of frozen daylily, therefore, the method creates a new way for the development of the daylily industry.
Description
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Technical field
The invention belongs to vegetables refrigeration fresh-keeping technique field, be specifically related to a kind of preparation method of utilizing liquid immersion type Superfreezing machine speed to freeze day lily.
Background technology
Day lily is the Liliaceae day lily, has another name called day lily, and edible part is young tender bud; Contain protein 2. 9g, carbohydrate 11. 6 g, ascorbic acid 33mg in per 100 g fresh flower flower buds; Calcium 73mg, phosphorus 69mg, iron 1. 4 mg; Carrotene 1. 17 mg, nutritive value is high, is the vegetables treasure that people like food.The day lily sweet property of distinguishing the flavor of is flat, have hemostasis, anti-inflammatory, diuresis, detumescence, analgesic, calm the nerves, effect such as pain relieving, can the multiple disease of supplemental treatment, can also remove endarterial deposit simultaneously, symptoms such as cerebral arteries emphraxis are had special curative effect, be described as the brain tonic dish.Day lily also is one of traditional export-oriented commodity of China, enjoys high reputation in the international market.
Because period of gathering of day lily, the bud respiratory metabolism was vigorous on the occasion of the spring and summer high temperature season, under the normal temperature condition, adopt yellow will occur in back 10 hours, bloom, phenomenon such as aging, nutritive value reduces greatly.Existing refrigerated fresh keeping method for daylily only can be preserved about 20 days; Though traditional air Technique of Speed Freezing can prolong the shelf-life of day lily significantly; But thaw back juice loss and browning phenomenon are more serious, far can not satisfy the demand of domestic and international market to fresh day lily; Though the drying processing method of day lily has solved the problem of its year-round provision, can not keep the original color and luster of day lily, local flavor and nutritional labeling, hindered further developing of day lily industry.
Summary of the invention
In order to overcome the deficiency of prior art; The object of the present invention is to provide the preparation method of a kind of quick-frozen day lily; Utilize the liquid immersion type instant freezer to make day lily generate the district through maximum ice crystal rapidly; The tiny ice crystal that generates can not destroy eucaryotic cell structure, at utmost keeps the former quality characteristic of day lily in conjunction with the cold storage technology.
For realizing above-mentioned purpose, the technical scheme that the present invention adopted is following:
The preparation method of a kind of quick-frozen day lily, it carries out according to following steps:
(1) screening raw material: select the young light yellow cauliflower of no yellow and no disease and pest for use, reject the petal of opening, yellow, aging and the harm of sick worm;
(2) clean: with clear water qualified day lily is cleaned, subsequent use behind the draining;
(3) blanching: the day lily behind the draining is placed the boiling water blanching rapidly;
(4) protect look, draining: the day lily after the above-mentioned blanching is soaked at colour protecting liquid, pulled out centrifugal the draining in back;
(5) packing: the day lily after draining is carried out vacuum packaging;
(6) precooling: vacuum-packed back precooling in freezer;
(7) quick-frozen: the quick-frozen in refrigerator of the day lily after the precooling;
(8) cold storage: the quick-frozen day lily through being up to the standards is sent into cold storage in the low-temperature cold store rapidly, and keeps the storehouse temperature stable.
In the such scheme, in the step (2), the temperature of clear water is controlled at 20-30 ℃.
In the such scheme, the said blanching temperature of step (3) is 100 ℃, and blanching time is 5 ~ 20s.
In the such scheme, the temperature of the said colour protecting liquid of step (4) is about 5 ° of C, is selected from concentration and is 0.1% ~ 1% citric acid, NaCl
2, NaHCO
3A kind of in the solution, the time that day lily is soaked in colour protecting liquid is 30 ~ 60s.
In the such scheme, in the said vacuum packet of step (5), vacuum degree control is between 0.65 ~ 0.95 Mpa.
In the such scheme, step (6) in freezer with day lily precooling to 0 ℃ ~ 2 ℃.
In the such scheme, the said refrigerator of step (7) is the liquid immersion type refrigerator, and the temperature of freezing liquid is-30 ℃ ~-50 ℃ in the refrigerator, and the quick-frozen time is controlled at 5 ~ 10min.
In the such scheme, in the step (8), said low-temperature cold store temperature is controlled at below-18 ℃ the temperature.
Beneficial effect of the present invention is:
1. the present invention applies to the liquid immersion type Technique of Speed Freezing in day lily fresh-keeping first; Make day lily generate the district through maximum ice crystal rapidly, the ice crystal of generation is tiny, does not destroy eucaryotic cell structure; The no feed juice in back of thawing flows out, and has farthest kept architectural characteristic and the nutritional labeling of day lily;
The present invention through blanching, protect the combination of look, liquid immersion type quick-freeze craft, solved in the past the day lily back problem of brown stain easily of thawing, after this day lily was thawed four hours, the basic no change of color;
3. the equipment easy operating that adopts of the present invention, energy consumption is lower, is applicable to the large-scale production of quick-frozen day lily, for new road is opened up in industry development and the foreign exchange earning of day lily.
Below in conjunction with the specific embodiment the present invention is done further explain.
The specific embodiment
It below is the preferred embodiment of the invention.
Embodiment 1
The preparation method of a kind of quick-frozen day lily, step is following:
Select for use medium well, no yellow and old and feeble full bud to carry out deep processing, pluck its lignifying bennet gently, qualified bud is washed with 35 ℃ clear water; Drain away the water, prepare against blanching, day lily is placed 100 ℃ boiling hot water blanching 15s rapidly; Afterwards that blanching is good day lily is soak time 60s in 1% the citric acid colour protecting liquid at 5 ℃, mass concentration, pulls the back out and drains away the water with the concussion machine, then day lily is carried out the individual layer vacuum packaging; Control vacuum is 0.8 Mpa, and precooling in 0 ℃ freezer then makes the day lily central temperature reduce to 0～2 ℃; In the freezing liquid that is placed on liquid immersion type Superfreezing machine-35 ℃, quick-frozen 10 min take out when central temperature reaches-18 ℃; Send into cold storage in-18 ℃ the cold storage storehouse rapidly through the quick-frozen day lily that is up to the standards, keep storehouse temperature to stablize.During edible thawing, with the packing day lily water or the air thawing of cold storage, the day lily color after thawing is vivid, no browning phenomenon, and no juice is reserved, and has kept architectural characteristic and the nutritive value of fresh day lily.
Embodiment 2
The preparation method of a kind of quick-frozen day lily, step is following:
Select for use medium well, no yellow and old and feeble full bud to carry out deep processing, pluck its lignifying bennet gently, qualified bud is washed with 20 ℃ clear water; Drain away the water, prepare against blanching, day lily is placed 100 ℃ boiling hot water blanching 20s rapidly; Afterwards that blanching is good day lily is soak time 40s in 1% the citric acid colour protecting liquid at 5 ℃, mass concentration, pulls the back out and drains away the water with the concussion machine, then day lily is carried out the individual layer vacuum packaging; Control vacuum is 0.95 Mpa, and precooling in 0 ℃ freezer then makes the day lily central temperature reduce to 0～2 ℃; In the freezing liquid that is placed on liquid immersion type Superfreezing machine-35 ℃, quick-frozen 10 min take out when central temperature reaches-18 ℃; Send into cold storage in-18 ℃ the cold storage storehouse rapidly through the quick-frozen day lily that is up to the standards, keep storehouse temperature to stablize.During edible thawing, with the packing day lily water or the air thawing of cold storage, the day lily color after thawing is vivid, no browning phenomenon, and no juice is reserved, and has kept architectural characteristic and the nutritive value of fresh day lily.
Embodiment 3
The preparation method of a kind of quick-frozen day lily, step is following:
Select for use medium well, no yellow and old and feeble full bud to carry out deep processing; Pluck its lignifying bennet gently; With 20 ℃ clear water qualified bud is washed, drain away the water, in order to blanching; Day lily is placed 100 ℃ boiling hot water blanching 20s rapidly, and afterwards that blanching is good day lily is 1% NaHCO at 5 ℃, mass concentration
3Soak time 30s in the colour protecting liquid pulls the back out and drains away the water with the concussion machine, then day lily is carried out the individual layer vacuum packaging; Control vacuum is 0.95 Mpa, and precooling in 0 ℃ freezer then makes the day lily central temperature reduce to 0～2 ℃; In the freezing liquid that is placed on liquid immersion type Superfreezing machine-35 ℃, quick-frozen 5 min take out when central temperature reaches-18 ℃; Send into cold storage in-18 ℃ the cold storage storehouse rapidly through the quick-frozen day lily that is up to the standards, keep storehouse temperature to stablize.During edible thawing, with the packing day lily water or the air thawing of cold storage, the day lily color after thawing is vivid, no browning phenomenon, and no juice is reserved, and has kept architectural characteristic and the nutritive value of fresh day lily.
Above-mentioned embodiment is merely preferred implementation of the present invention; Can not limit the scope of the present invention's protection with this, the variation of any unsubstantiality that those skilled in the art is done on basis of the present invention and replacement all belong to the present invention's scope required for protection.
Claims (8)
1. the preparation method of a quick-frozen day lily, it is characterized in that: it carries out according to following steps:
(1) screening raw material: select the young light yellow cauliflower of no yellow and no disease and pest for use, reject the petal of opening, yellow, aging and the harm of sick worm;
(2) clean: with clear water qualified day lily is cleaned, subsequent use behind the draining;
(3) blanching: the day lily behind the draining is placed the boiling water blanching rapidly;
(4) protect look, draining: the day lily after the above-mentioned blanching is soaked at colour protecting liquid, pulled out centrifugal the draining in back;
(5) packing: the day lily after draining is carried out vacuum packaging;
(6) precooling: vacuum-packed back precooling in freezer;
(7) quick-frozen: the quick-frozen in refrigerator of the day lily after the precooling;
(8) cold storage: the quick-frozen day lily through being up to the standards is sent into cold storage in the low-temperature cold store rapidly, and keeps the storehouse temperature stable.
2. according to the preparation method of right 1 described quick-frozen day lily, it is characterized in that: in the step (2), the temperature of clear water is controlled at 20-40 ℃.
3. according to the preparation method of right 1 described quick-frozen day lily, it is characterized in that: the said blanching temperature of step (3) is 100 ℃, and blanching time is 5 ~ 20s.
4. according to the preparation method of right 1 described quick-frozen day lily, it is characterized in that: the temperature of the said colour protecting liquid of step (4) is about 5 ° of C, is selected from concentration and is 0.1% ~ 1% citric acid, NaCl
2, NaHCO
3A kind of in the solution, the time that day lily is soaked in colour protecting liquid is 30 ~ 60s.
5. according to the preparation method of right 1 described quick-frozen day lily, it is characterized in that: in the said vacuum packaging of step (5), vacuum degree control is between 0.65 ~ 0.95 Mpa.
6. according to the preparation method of right 1 described quick-frozen day lily, it is characterized in that: step (6) in freezer with day lily precooling to 0 ℃ ~ 2 ℃.
7. according to the preparation method of right 1 described quick-frozen day lily, it is characterized in that: the said refrigerator of step (7) is the liquid immersion type refrigerator, and the temperature of freezing liquid is-30 ℃ ~-50 ℃ in the refrigerator, and the quick-frozen time is controlled at 5 ~ 10min.
8. according to the preparation method of right 1 described quick-frozen day lily, it is characterized in that: in the step (8), said low-temperature cold store temperature is controlled at below-18 ℃ the temperature.
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| CN2012101177495A CN102599233A (en) | 2012-04-20 | 2012-04-20 | Quick-frozen daylily making method |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103283819A (en) * | 2013-04-19 | 2013-09-11 | 四川省宕府王食品有限责任公司 | Processing method for vacuum freeze drying of Hemerocallis fulva L. |
| CN103564035A (en) * | 2012-08-08 | 2014-02-12 | 天津市傲绿农副产品集团股份有限公司 | Carrot quick-freezing process with variable quick-freezing speed |
| CN103828905A (en) * | 2014-03-12 | 2014-06-04 | 江苏海大食品有限公司 | Process for quickly freezing flowering Chinese cabbage |
| CN104432018A (en) * | 2014-09-04 | 2015-03-25 | 贵州大自然科技有限公司 | Preparation method of dried palm buds |
| CN104472475A (en) * | 2014-11-25 | 2015-04-01 | 贵州大自然科技有限公司 | Vacuum freezing process of palm buds |
| CN104473102A (en) * | 2014-11-12 | 2015-04-01 | 祁东县兴臣黄花菜种植专业合作社 | Preparation method of salted day lily |
| CN105794952A (en) * | 2014-12-29 | 2016-07-27 | 吴兰平 | Processing method of frozen bumalda bladdernut fruit or root |
| CN106135817A (en) * | 2015-03-24 | 2016-11-23 | 湖南绿源尚品食品有限公司 | A kind of fresh-keeping hemerocallis and preservation method thereof |
| CN106722460A (en) * | 2016-11-30 | 2017-05-31 | 渠县琦鑫源花卉苗木开发有限公司 | A kind of drying method of day lily of utilization freezing guarantor color solid |
| CN107771921A (en) * | 2017-10-17 | 2018-03-09 | 大田县馨箐贸易有限公司 | A kind of day lily antistaling agent and its preservation method |
| CN107788103A (en) * | 2015-12-30 | 2018-03-13 | 台太兴业（常熟）食品有限公司 | A kind of innoxious antistaling agent and its safe Preservation Treatment technique of protecting green lands of quick-frozen komatsuna |
| CN109169850A (en) * | 2018-11-04 | 2019-01-11 | 湖南吉祥食品有限公司 | A kind of quick-freezing fresh-keeping method of day lily |
| CN111758768A (en) * | 2020-07-13 | 2020-10-13 | 湖南农业大学 | Processing method of quick-frozen daylily and fresh-keeping storage device thereof |
| CN112106822A (en) * | 2020-09-14 | 2020-12-22 | 祁东县农业发展有限公司 | Making process of quick-frozen daylily |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103564035A (en) * | 2012-08-08 | 2014-02-12 | 天津市傲绿农副产品集团股份有限公司 | Carrot quick-freezing process with variable quick-freezing speed |
| CN103283819B (en) * | 2013-04-19 | 2014-05-07 | 四川省宕府王食品有限责任公司 | Processing method for vacuum freeze drying of Hemerocallis fulva L. |
| CN103283819A (en) * | 2013-04-19 | 2013-09-11 | 四川省宕府王食品有限责任公司 | Processing method for vacuum freeze drying of Hemerocallis fulva L. |
| CN103828905A (en) * | 2014-03-12 | 2014-06-04 | 江苏海大食品有限公司 | Process for quickly freezing flowering Chinese cabbage |
| CN104432018A (en) * | 2014-09-04 | 2015-03-25 | 贵州大自然科技有限公司 | Preparation method of dried palm buds |
| CN104432018B (en) * | 2014-09-04 | 2016-05-18 | 贵州大自然科技股份有限公司 | A kind of preparation method of drying palm petal |
| CN104473102A (en) * | 2014-11-12 | 2015-04-01 | 祁东县兴臣黄花菜种植专业合作社 | Preparation method of salted day lily |
| CN104472475B (en) * | 2014-11-25 | 2016-08-17 | 贵州大自然科技股份有限公司 | A kind of vacuum refrigeration technique of palm petal |
| CN104472475A (en) * | 2014-11-25 | 2015-04-01 | 贵州大自然科技有限公司 | Vacuum freezing process of palm buds |
| CN105794952A (en) * | 2014-12-29 | 2016-07-27 | 吴兰平 | Processing method of frozen bumalda bladdernut fruit or root |
| CN106135817A (en) * | 2015-03-24 | 2016-11-23 | 湖南绿源尚品食品有限公司 | A kind of fresh-keeping hemerocallis and preservation method thereof |
| CN107788103A (en) * | 2015-12-30 | 2018-03-13 | 台太兴业（常熟）食品有限公司 | A kind of innoxious antistaling agent and its safe Preservation Treatment technique of protecting green lands of quick-frozen komatsuna |
| CN106722460A (en) * | 2016-11-30 | 2017-05-31 | 渠县琦鑫源花卉苗木开发有限公司 | A kind of drying method of day lily of utilization freezing guarantor color solid |
| CN107771921A (en) * | 2017-10-17 | 2018-03-09 | 大田县馨箐贸易有限公司 | A kind of day lily antistaling agent and its preservation method |
| CN109169850A (en) * | 2018-11-04 | 2019-01-11 | 湖南吉祥食品有限公司 | A kind of quick-freezing fresh-keeping method of day lily |
| CN111758768A (en) * | 2020-07-13 | 2020-10-13 | 湖南农业大学 | Processing method of quick-frozen daylily and fresh-keeping storage device thereof |
| CN112106822A (en) * | 2020-09-14 | 2020-12-22 | 祁东县农业发展有限公司 | Making process of quick-frozen daylily |
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Application publication date: 20120725 |