CN105533393A - Method for processing food by using liquid nitrogen - Google Patents
Method for processing food by using liquid nitrogen Download PDFInfo
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- CN105533393A CN105533393A CN201410584507.6A CN201410584507A CN105533393A CN 105533393 A CN105533393 A CN 105533393A CN 201410584507 A CN201410584507 A CN 201410584507A CN 105533393 A CN105533393 A CN 105533393A
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- liquid nitrogen
- food
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- quick
- nitrogen
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- Freezing, Cooling And Drying Of Foods (AREA)
- Storage Of Fruits Or Vegetables (AREA)
Abstract
The present invention discloses a method for processing food by using liquid nitrogen. The method comprises that liquid nitrogen is introduced into a rapid-freezing groove and completely contacts food so as to make the food be instantly frozen; and frozen and vaporized nitrogen gas in introduced into a box type drying device to make fruits and vegetables be subjected to dewatering drying under an anaerobic condition. With the processing method of the present invention, the liquid nitrogen waste produced after nitrogen oxygen separation in the steel refinery separation workshop is completely utilized, the food to be processed is instantly frozen and dried through the simple and easy-performing processing process, and the difficult problem that the processing of the frozen food consumes a lot of resources is well solved.
Description
Technical field
The invention belongs to food processing field, be specifically related to a kind of method utilizing liquid nitrogen to carry out food processing.
Background technology
Liquid nitrogen is inertia, colourless, odorless, and non-corrosiveness is non-combustible, and temperature is extremely low.Nitrogen constitutes the major part (volume ratio 78.03%, weight ratio 75.5%) of air.Nitrogen is inactive, does not support burning; But it is not the essential elements sustained life.Produce at current liquid nitrogen in the manufacture craft of food, the finished product made is of low nutritive value, and well can not control product cost, and the holding time is short.
Summary of the invention
In order to overcome the above-mentioned technical problem that prior art field exists, the object of the invention is to, a kind of method utilizing liquid nitrogen to carry out food processing is provided, not only production process is simple in the present invention, production efficiency is higher, and food mouthfeel better, the holding time is longer.
The method utilizing liquid nitrogen to carry out food processing provided by the invention, comprises the following steps:
(1) first, be placed on by foods to be processed on ribbon conveyer, be delivered in quick-frozen groove, the addition that food enters quick-frozen groove controls at 100 ~ 113kg/min; Passed into from quick-frozen trench bottom by liquid nitrogen, intake controls at 10 ~ 13kg/min simultaneously, and temperature remains between-210 ~-230 DEG C.Deliver to from quick-frozen groove in the freezer of-24 DEG C with ribbon conveyer again after making food and liquid nitrogen fully contact 2 ~ 4s and preserve;
(2) again by being located at the nitrogen feeder above quick-frozen groove, box drier is delivered to by collecting the nitrogen pipeline come, intake controls at 710 ~ 725 liters/min, simultaneously, fruits and vegetables are sent into drying machine by conveyer, intake then controls at 200 ~ 220kg/min, and the temperature in drying box remains between 75 ~ 80 DEG C, makes fruits and vegetables in 14 ~ 20min, complete dehydrating under oxygen free condition.
The method utilizing liquid nitrogen to carry out food processing provided by the invention, its beneficial effect is, overcome operation in prior art processed food technique more, the problem that workload is large, improves production efficiency; Avoid because finished product is of low nutritive value, the shelf-life short mass defect caused, utilization rate of raw materials is high, reduces production cost; Effectively ensure that food quality.
Detailed description of the invention
Below in conjunction with an embodiment, the method utilizing liquid nitrogen to carry out food processing provided by the invention is described in detail.
Embodiment
The liquid nitrogen that utilizes of the present embodiment carries out the method for food processing, comprises the following steps:
(1) first, be placed on by foods to be processed on ribbon conveyer, be delivered in quick-frozen groove, the addition that food enters quick-frozen groove controls at 113kg/min; Passed into from quick-frozen trench bottom by liquid nitrogen, intake controls at 13kg/min, and temperature remains between-230 DEG C simultaneously.Deliver to from quick-frozen groove in the freezer of-24 DEG C with ribbon conveyer again after making food and liquid nitrogen fully contact 4s and preserve;
(2) again by being located at the nitrogen feeder above quick-frozen groove, box drier is delivered to by collecting the nitrogen pipeline come, intake controls at 725 liters/min, simultaneously, fruits and vegetables are sent into drying machine by conveyer, intake then controls at 200kg/min, and the temperature in drying box remains between 80 DEG C, makes fruits and vegetables in 20min, complete dehydrating under oxygen free condition.
Utilize liquid nitrogen to carry out the method for food processing, can directly produce liquid nitrogen food, without the need to further processing, operation is simple, and the finished product rich in nutritive value processed, mouthfeel is good, and the holding time is longer.
Claims (1)
1. utilize liquid nitrogen to carry out a method for food processing, it is characterized in that: said method comprising the steps of:
(1) first, be placed on by foods to be processed on ribbon conveyer, be delivered in quick-frozen groove, the addition that food enters quick-frozen groove controls at 100 ~ 113kg/min; Passed into from quick-frozen trench bottom by liquid nitrogen, intake controls at 10 ~ 13kg/min simultaneously, and temperature remains between-210 ~-230 DEG C, delivers in the freezer of-24 DEG C again preserve after making food and liquid nitrogen fully contact 2 ~ 4s with ribbon conveyer from quick-frozen groove;
(2) again by being located at the nitrogen feeder above quick-frozen groove, box drier is delivered to by collecting the nitrogen pipeline come, intake controls at 710 ~ 725 liters/min, simultaneously, fruits and vegetables are sent into drying machine by conveyer, intake then controls at 200 ~ 220kg/min, and the temperature in drying box remains between 75 ~ 80 DEG C, makes fruits and vegetables in 14 ~ 20min, complete dehydrating under oxygen free condition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410584507.6A CN105533393A (en) | 2014-10-28 | 2014-10-28 | Method for processing food by using liquid nitrogen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410584507.6A CN105533393A (en) | 2014-10-28 | 2014-10-28 | Method for processing food by using liquid nitrogen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105533393A true CN105533393A (en) | 2016-05-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410584507.6A Pending CN105533393A (en) | 2014-10-28 | 2014-10-28 | Method for processing food by using liquid nitrogen |
Country Status (1)
| Country | Link |
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| CN (1) | CN105533393A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106036761A (en) * | 2016-07-04 | 2016-10-26 | 陈创朝 | Drying method of zanthoxylum bungeanum |
| CN107744094A (en) * | 2017-11-28 | 2018-03-02 | 河西学院 | A kind of preparation method of the fragility fried instant noodle excellent with protecting fragility |
-
2014
- 2014-10-28 CN CN201410584507.6A patent/CN105533393A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106036761A (en) * | 2016-07-04 | 2016-10-26 | 陈创朝 | Drying method of zanthoxylum bungeanum |
| CN107744094A (en) * | 2017-11-28 | 2018-03-02 | 河西学院 | A kind of preparation method of the fragility fried instant noodle excellent with protecting fragility |
| CN107744094B (en) * | 2017-11-28 | 2021-04-09 | 河西学院 | Preparation method of fried instant noodles with excellent brittleness and crispness keeping performance |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160504 |
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| WD01 | Invention patent application deemed withdrawn after publication |