CN1899074A - Method for processing preserved fruit - Google Patents
Method for processing preserved fruit Download PDFInfo
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- CN1899074A CN1899074A CN 200610043168 CN200610043168A CN1899074A CN 1899074 A CN1899074 A CN 1899074A CN 200610043168 CN200610043168 CN 200610043168 CN 200610043168 A CN200610043168 A CN 200610043168A CN 1899074 A CN1899074 A CN 1899074A
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Abstract
The present invention relates to a kind of improved preserved fruit producing process. The improved preserved fruit producing process includes the steps of vacuum low temperature drying, vacuum concentrating sugar dipping and vacuum drying, and all the steps are completed under hypoxia and low temperature conditions and are fast. The production process has high production efficiency, and well preservation of the nutritious components, including heat sensitive vitamin C, in the fruit material, and the product has sufficient sugar content of 70-78 %, semi-transparent feeling, water content lower than 15 %, high quality and safety.
Description
Technical field:
The present invention relates to a kind of preserved fruit processing method.
Background technology
During preserved fruit was produced both at home and abroad at present, soaking sugar and oven dry was topmost critical process in its process.Usually adopt fresh fruit to make raw material when soaking sugar, the tradition of often depressing boils sugar, soak sugared maneuver finishes.Because fresh fruit dense structure, moisture content height, liquid glucose are difficult to infiltrate, for obtaining to contain the sugared full sugared body that oozes uniformly, action required is chronic, is generally 24～48 hours.Boil sugar, when soaking sugar, the ill-effect of high temperature and oxidation causes nutritional labeling loss and color and luster variation.For protect look, put forward the hyperosmotic glucose ability, prevent well-done etc. so, also need arrange pretreatment procedures such as sulphuring (or soaking sulphur), sclerosis, stroke seam before soaking sugar.Drying naturally dry fruit, vegetables make raw material through progressively sugaring boiling under the also useful normal pressure, long-time again soak soak sugared method of operating, because of raw material shrinks serious, obtain to contain uniformly sugared plumpness, it boils sugar, soak the sugar time also needs more than 24 hours, and the nutritional labeling of product and color and luster are more low.Soak sugar back and dry in drying room, operating time long (general about 24 hours), sanitary condition are poor.These traditional preserved fruit processing methods are numerous and diverse, the process-cycle is long, production efficiency is low, the process sanitary condition is poor, product quality is low.
In recent years, the preserved fruit process technology develops to some extent, and fresh fruit is packed in the vacuum tank, and the back of finding time feeds elevated temperature heat liquid glucose (＞90 ℃), and with hot sugar concentration from low to high the vacuum of section displacing boil sugar and soak that sugared method is existing aborning to be used, also delivered various forms of vacuum pressure sugar-soaking methods etc.Though the former increases at product quality, also soak the sugar time and also need 20～30 hours because of fresh fruit dense structure adds the not high reason of level of vacuum, can with moisture in the fresh fruit most of discharge obtain to contain sugar full ooze sugared body.The latter with the former roughly the same vacuum (110～60mmHg or-650～-700mmHg) under the condition, in 55～75 ℃ of temperature, concentration be in 55%～63% the liquid glucose after the short time is soaked sugar, break vacuum, when the liquid glucose temperature is 70 ℃, apply 3～6Kg/cm again
2Air pressure keep this generic operation of 1～1.5 hour, be subjected to the ill-effect of pressure-air and high temperature on the one hand, the storage rate of product nutritional labeling can be had a strong impact on; On the one hand the moisture in the raw tissue is discharged the influence that its infiltration process is subjected to identical hyperbaric environment with liquid glucose, moisture can not be overflowed fast in a large number and will be obtained height and to contain sugared plumpness uniformly still very difficult, from then on class methods can be from patent documentation (patent publication No.: CN1054522 for this, application number: find out that CN91102588.X) this method needs can obtain the preserved fruit product in 6～8 hours through vacuum drying after soaking sugar.
Summary of the invention
The object of the present invention is to provide and a kind ofly can promote the quality of preserved fruit product comprehensively, significantly shorten the preserved fruit processing method that the process-cycle enhances productivity.
For achieving the above object, the technical solution used in the present invention is:
A kind of preserved fruit processing method, its special character is: the concrete steps of described processing method are as follows:
(1), pre-treatment
Cleaning, cutting fresh fruit, vegetables raw material;
(2), vacuum dehydrating at lower temperature
Fresh fruit, the sabot of vegetables raw material after cleaning, the cutting place on the truck, truck enters in the vacuum dehydrating at lower temperature machine, be evacuated down to 133～665Pa, keep this vacuum to carry out drying operation, its corresponding steam-laden temperature is-17～1 ℃, the vacuum indoor environment temperature is 10～55 ℃, and the drying time is 3.5～5.5 hours;
(3), concentration-type vacuum sugar-soaking
Raw material after drying framed up to be placed in the vacuum impregnation jar, is evacuated down to 800～1333Pa, and inlet temperature is lower than 35 ℃ and concentration is 15%～25% liquid glucose, keeps vacuum sugar-soaking 1 hour; Liquid glucose is heated to 50 ℃, descends to some extent but is no more than 12330Pa because of liquid glucose concentrates a large amount of steam vacuums, and level of vacuum still is higher than 87%, sugar concentration rises to more than 35% after 15 minutes, stop heating, vacuum progressively goes back up to 800～1333Pa, soaks sugar under this state 1.5 hours; Heating concentrates liquid glucose 15～20 minutes once more, and sugar concentration is risen to 60%～75%, soaks sugar at last again 1～1.5 hour; 4 hours vacuum sugar-soaking total times～4 hours 35 minutes, the sugared body that oozes that soaks after the sugar contains that sugar is full, moisture content is lower than 30%;
(4), the floating sugar of flushing
Soak sugar back water and rinse out the floating sugar of appearance, sticking dish and final products appearance are touched with one's hand when preventing to dry thereafter, and guarantee that the contained sugar of preserved fruit is the sugar content of organization internal;
(5), vacuum drying
Vacuum drier is put in the sugared body sabot of oozing of the floating sugar of flush away appearance, in vacuum 133～665Pa, vacuum chamber, dried 2～2.5 hours under 20～50 ℃ of conditions of heat supply temperature;
(6), with finished product packing, check, warehouse-in.
The drying time in the above-mentioned process steps (2) is in 3.5～5.5 hours, does not heat in preceding 0.5 hour, and the vacuum indoor environment temperature was 20～30 ℃ in last 0.5～1 hour, and the highest heat supply temperature in centre is no more than 55 ℃, and vacuum is 133～665pa.
In the above-mentioned process steps (3) to soak sugar be in 4 hours～4 hours 35 minutes the time, what do not concentrate soaks the sugar stage, and vacuum is 800～1333pa in the container, and liquid glucose does not heat, the minimum 12330pa that drops to of vacuum when liquid glucose concentrates, concentration process liquid glucose temperature is no more than 50 ℃.
In the vacuum drying process in the above-mentioned process steps (5), heat supply temperature was 20～30 ℃ in last 0.5 hour, and the highest heat supply temperature is 45～50 ℃ before this, and vacuum is 133～665pa.
Advantage of the present invention is:
1, the present invention adopts before soaking sugar that the vacuum dehydrating at lower temperature technology is processed into fresh fruit that body is plentiful earlier, nutritional labeling and color and luster keep good, organize in the numerous and even distribution of micropore, have advantages of higher compressive strength, moisture content is lower than 8% high-quality dried product; utilize the tissue characteristics of this dried product and the liquid glucose penetrating power under the higher vacuum again; under lower temperature conditions, evenly soak sugar fast, will contain the full sugared body that oozes of sugar at last and in good anoxic, low-temperature protection atmosphere, obtain high-quality preserved fruit product through vacuum drying.
2, process of the present invention is not used chemical addition agent and chemical treatment method, and product has high edible safety.
3, the preserved fruit of processing of the present invention, its nutritional labeling is preserved good, and the storage rate of the thermal sensitivity composition VC of easy loss is higher than 50%; Contain the sugared full good translucent sense that has, moisture content is lower than 15%, and total sugar content is between 70～78%.
The specific embodiment
The technological process of the technology of the present invention processing preserved fruit is:
Raw material-cleaning-cutting (or stoning)-vacuum dehydrating at lower temperature-concentration-type vacuum impregnation-flush away appearance is floated sugar-vacuum drying-packing of product, check, warehouse-in.
Concrete steps are as follows:
1, pre-treatment
Except that cleaning, cutting, no longer need original other chemistry and mechanical system pretreatment procedure.
2, vacuum dehydrating at lower temperature
Fresh fruit, the sabot of vegetables raw material after cleaning, the cutting place on the truck, truck enters vacuum dehydrating at lower temperature machine (mini-plant is that charging tray is placed directly on interior each the layered material plate rail of vacuum chamber), (vacuum is a little less than 65～133Pa) of the freeze drying requirement to be evacuated down to 133～665Pa, keep this vacuum to carry out drying operation, its corresponding steam-laden temperature is-17～1 ℃, do not heat in preceding 0.5 hour, the vacuum indoor environment temperature was lower than 30 ℃ in last 0.5～1 hour, and the highest heat supply temperature in centre is no more than 55 ℃; According to raw material variety and cutting shape, vary in size, total drying time was generally 3.5～5.5 hours.
3, concentration-type vacuum sugar-soaking
Raw material after drying framed up place in the vacuum impregnation jar, be evacuated down to 800～1333Pa, inlet temperature is lower than 35 ℃ and concentration is 15%～25% liquid glucose, kept vacuum sugar-soaking 1 hour, liquid glucose is heated to 50 ℃, descend to some extent but be no more than 12330Pa because of liquid glucose concentrates a large amount of steam vacuums, sugar concentration rises to more than 35% after about 15 minutes, stop heating, vacuum progressively goes back up to 800～1333Pa, soaks sugar under this state 1.5 hours, and heating concentrates liquid glucose 15～20 minutes once more, look technological requirement sugar concentration is risen to 60%～75%, soaked sugar at last again 1～1.5 hour.4 hours vacuum sugar-soaking total times～4 hours 35 minutes, the sugared body that oozes that requires to soak after the sugar contains that sugar is full, moisture content is lower than 30%.
4, the floating sugar of flushing
Soak sugar back water and rinse out the floating sugar of appearance, sticking dish and final products appearance are touched with one's hand when preventing to dry thereafter, and guarantee that the contained sugar of preserved fruit is the sugar content of organization internal.
5, vacuum drying
Vacuum drier is put in the sugared body sabot of oozing of the floating sugar of flush away appearance, dried 2～2.5 hours under 45～50 ℃ of conditions of the highest heat supply temperature in vacuum 133～665Pa, vacuum chamber, heat supply temperature dropped to 20～30 ℃ in last 0.5 hour.
6, preserved fruit product
Preserved fruit through present technique processing has following characteristics: nutritional labeling is preserved good, and the storage rate of the thermal sensitivity composition VC of easy loss is higher than 50%; Contain the sugared full good translucent sense that has, moisture content is lower than 15%, and total sugar content is pressed the product requirement regulation and control at 70～78%.Because process is not used chemical addition agent and chemical treatment method and good sanitary condition, product has high edible safety.
7, process equipment
The employed exemplary apparatus of present technique is ZGT type vacuum dehydrating at lower temperature machine (state key new product project, numbering 2000D041G850028; A kind of vacuum dehydration drying equipment, patent No. ZL93247069.6) and ZL type concentration-type vacuum impregnation equipment (patent No. ZL99234547.2).Also can use other similar devices to produce by the present technique technological requirement.
Specific embodiment:
The processing of stoning candied date: after cleaning, the stoning, look raw material variety and vary in size, drying 5～5.5 hours of vacuum and low temperature, concentration-type vacuum sugar-soaking 4～4.5 hours, vacuum drying 2～2.5 hours needs 11～12.5 hours altogether.Process is not used sulphuring or is soaked chemical treatment such as sulphur, need not to draw seam and waits a pretreatment procedure that improves the liquid glucose penetrating power.Product contains sugared full, and translucent sense is strong, and total reducing sugar can be up to 78%; Nutritional labeling is preserved good, and Sun Shi VC component content 600～800mg/100g very easily compares with VC content in the dry of fresh fruit, and its storage rate is higher than 60%; Color and luster can just change to the temperature by process between pale brown look pale yellow; The edible safety health.
Claims (4)
1, a kind of preserved fruit processing method, it is characterized in that: the concrete steps of described processing method are as follows:
(1), pre-treatment
Cleaning, cutting fresh fruit, vegetables raw material;
(2), vacuum dehydrating at lower temperature
Fresh fruit, the sabot of vegetables raw material after cleaning, the cutting place on the truck, truck enters in the vacuum dehydrating at lower temperature machine, be evacuated down to 133～665Pa, keep this vacuum to carry out drying operation, its corresponding steam-laden temperature is-17～1 ℃, the vacuum indoor environment temperature is 10～55 ℃, and the drying time is 3.5～5.5 hours;
(3), concentration-type vacuum sugar-soaking
Raw material after drying framed up to be placed in the vacuum impregnation jar, is evacuated down to 800～1333Pa, and inlet temperature is lower than 35 ℃ and concentration is 15%～25% liquid glucose, keeps vacuum sugar-soaking 1 hour; Liquid glucose is heated to 50 ℃, descends to some extent but is no more than 12330Pa because of liquid glucose concentrates a large amount of steam vacuums, and level of vacuum still is higher than 87%, sugar concentration rises to more than 35% after 15 minutes, stop heating, vacuum progressively goes back up to 800～1333Pa, soaks sugar under this state 1.5 hours; Heating concentrates liquid glucose 15～20 minutes once more, and sugar concentration is risen to 60%～75%, soaks sugar at last again 1～1.5 hour; 4 hours vacuum sugar-soaking total times～4 hours 35 minutes, the sugared body that oozes that soaks after the sugar contains that sugar is full, moisture content is lower than 30%;
(4), the floating sugar of flushing
Soak sugar back water and rinse out the floating sugar of appearance, sticking dish and final products appearance are touched with one's hand when preventing to dry thereafter, and guarantee that the contained sugar of preserved fruit is the sugar content of organization internal;
(5), vacuum drying
Vacuum drier is put in the sugared body sabot of oozing of the floating sugar of flush away appearance, in vacuum 133～665Pa, vacuum chamber, dried 2～2.5 hours under 20～50 ℃ of conditions of heat supply temperature;
(6), with finished product packing, check, warehouse-in.
2, a kind of preserved fruit processing method according to claim 1, it is characterized in that: the drying time in the described process steps (2) is in 3.5～5.5 hours, do not heat in preceding 0.5 hour, the vacuum indoor environment temperature was 20～30 ℃ in last 0.5～1 hour, the highest heat supply temperature in centre is no more than 55 ℃, and vacuum is 133～665pa.
3, according to the described preserved fruit processing method of claim 1, it is characterized in that: in the described process steps (3) to soak sugar be in 4 hours～4 hours 35 minutes the time, what do not concentrate soaks the sugar stage, vacuum is 800～1333pa in the container, liquid glucose does not heat, the minimum 12330pa that drops to of vacuum when liquid glucose concentrates, concentration process liquid glucose temperature is no more than 50 ℃.
4, a kind of preserved fruit processing method according to claim 1, it is characterized in that: in the vacuum drying process in the described process steps (5), heat supply temperature was 20～30 ℃ in last 0.5 hour, and the highest heat supply temperature is 45～50 ℃ before this, and vacuum is 133～665pa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CNB2006100431686A CN100428890C (en) | 2006-07-17 | 2006-07-17 | Method for processing preserved fruit |
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| CNB2006100431686A CN100428890C (en) | 2006-07-17 | 2006-07-17 | Method for processing preserved fruit |
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| CN1899074A true CN1899074A (en) | 2007-01-24 |
| CN100428890C CN100428890C (en) | 2008-10-29 |
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| CNB2006100431686A Expired - Fee Related CN100428890C (en) | 2006-07-17 | 2006-07-17 | Method for processing preserved fruit |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101690609B (en) * | 2009-10-23 | 2011-05-04 | 中国农业大学 | A method for processing green raisin and preserved grape |
| CN102067932A (en) * | 2010-12-08 | 2011-05-25 | 沈阳农业大学 | Preparation method of low-sugar fully-preserved wild kiwiberries |
| CN101142935B (en) * | 2006-09-11 | 2011-12-28 | 北京御食园食品股份有限公司 | Sulfurless preserved fruit confect and its producing method |
| CN102342319A (en) * | 2011-09-27 | 2012-02-08 | 陕西科技大学 | Method for processing candied jujubes with quick-frozen jujubes |
| CN102843912A (en) * | 2010-03-12 | 2012-12-26 | 热尔韦法国达能公司 | Process for the preparation of stable and homogeneous fruit preparation |
| CN103493958A (en) * | 2013-10-13 | 2014-01-08 | 高磊 | Low-sugar preserved strawberry |
| CN104770554A (en) * | 2015-04-15 | 2015-07-15 | 陕西科技大学 | Multi-flavor bonbon and preparation method thereof |
| CN105028856A (en) * | 2015-07-31 | 2015-11-11 | 宁波市农业科学研究院 | Processing method for producing glazed waxberries through resistant dextrin |
| CN105831379A (en) * | 2016-04-17 | 2016-08-10 | 莫玉明 | Method for processing preserved phyllanthus emblica |
| CN107348089A (en) * | 2017-07-28 | 2017-11-17 | 合肥徽徽逗食品有限公司 | A kind of processing method of vacuum sugar-soaking blueberry preserved fruits |
| CN107874174A (en) * | 2017-10-17 | 2018-04-06 | 温州科技职业学院 | A kind of processing technology of blueberry dried fruit |
| CN110495515A (en) * | 2019-08-28 | 2019-11-26 | 杭州华味亨食品有限公司 | A kind of fresh fruit process equipment and its processing technology |
| CN110934219A (en) * | 2019-12-03 | 2020-03-31 | 山东福田药业有限公司 | Fresh and fragrant preserved apple and preparation method thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1061135A (en) * | 1990-11-03 | 1992-05-20 | 彭芸 | A kind of production method of preserved fruit |
| CN1061325A (en) * | 1991-11-19 | 1992-05-27 | 南昌职业技术师范学院 | A kind of vacuum sweetening process for candied fruit and vegetable |
| CN1199560A (en) * | 1997-05-20 | 1998-11-25 | 莫仁正 | Low-sugar preserved fruit and cold fruit producing technology and functional health preserved fruit |
| CN1251608C (en) * | 2004-03-12 | 2006-04-19 | 山西大学 | Method for making preserved fruit with low content of sulphur |
-
2006
- 2006-07-17 CN CNB2006100431686A patent/CN100428890C/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101142935B (en) * | 2006-09-11 | 2011-12-28 | 北京御食园食品股份有限公司 | Sulfurless preserved fruit confect and its producing method |
| CN101690609B (en) * | 2009-10-23 | 2011-05-04 | 中国农业大学 | A method for processing green raisin and preserved grape |
| CN102843912A (en) * | 2010-03-12 | 2012-12-26 | 热尔韦法国达能公司 | Process for the preparation of stable and homogeneous fruit preparation |
| CN102067932A (en) * | 2010-12-08 | 2011-05-25 | 沈阳农业大学 | Preparation method of low-sugar fully-preserved wild kiwiberries |
| CN102342319A (en) * | 2011-09-27 | 2012-02-08 | 陕西科技大学 | Method for processing candied jujubes with quick-frozen jujubes |
| CN102342319B (en) * | 2011-09-27 | 2012-11-07 | 陕西科技大学 | Method for processing candied jujubes with quick-frozen jujubes |
| CN103493958A (en) * | 2013-10-13 | 2014-01-08 | 高磊 | Low-sugar preserved strawberry |
| CN104770554A (en) * | 2015-04-15 | 2015-07-15 | 陕西科技大学 | Multi-flavor bonbon and preparation method thereof |
| CN105028856A (en) * | 2015-07-31 | 2015-11-11 | 宁波市农业科学研究院 | Processing method for producing glazed waxberries through resistant dextrin |
| CN105028856B (en) * | 2015-07-31 | 2018-11-30 | 宁波市农业科学研究院 | Utilize the processing method of resistant dextrin production glazed waxberry |
| CN105831379A (en) * | 2016-04-17 | 2016-08-10 | 莫玉明 | Method for processing preserved phyllanthus emblica |
| CN107348089A (en) * | 2017-07-28 | 2017-11-17 | 合肥徽徽逗食品有限公司 | A kind of processing method of vacuum sugar-soaking blueberry preserved fruits |
| CN107874174A (en) * | 2017-10-17 | 2018-04-06 | 温州科技职业学院 | A kind of processing technology of blueberry dried fruit |
| CN110495515A (en) * | 2019-08-28 | 2019-11-26 | 杭州华味亨食品有限公司 | A kind of fresh fruit process equipment and its processing technology |
| CN110934219A (en) * | 2019-12-03 | 2020-03-31 | 山东福田药业有限公司 | Fresh and fragrant preserved apple and preparation method thereof |
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| CN100428890C (en) | 2008-10-29 |
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Assignee: Yunnan Yuxi Tianqin Food Co., Ltd. Assignor: Shaanxi University of Science and Technology Contract record no.: 2010610000035 Denomination of invention: Method for processing preserved fruit Granted publication date: 20081029 License type: Exclusive License Open date: 20070124 Record date: 20100705 |
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