CN107504763A - A kind of bamboo high-quality drying method - Google Patents
A kind of bamboo high-quality drying method Download PDFInfo
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- CN107504763A CN107504763A CN201710754001.9A CN201710754001A CN107504763A CN 107504763 A CN107504763 A CN 107504763A CN 201710754001 A CN201710754001 A CN 201710754001A CN 107504763 A CN107504763 A CN 107504763A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B3/00—Drying solid materials or objects by processes involving the application of heat
- F26B3/32—Drying solid materials or objects by processes involving the application of heat by development of heat within the materials or objects to be dried, e.g. by fermentation or other microbiological action
- F26B3/34—Drying solid materials or objects by processes involving the application of heat by development of heat within the materials or objects to be dried, e.g. by fermentation or other microbiological action by using electrical effects
- F26B3/347—Electromagnetic heating, e.g. induction heating or heating using microwave energy
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Abstract
The invention discloses a kind of bamboo high-quality drying method, comprise the following steps：（1）Bamboo pretreatment,（2）Primary drying processing,（3）Redrying processing,（4）Drying process three times.The present invention has carried out special improvement to the drying method of bamboo and handled, the cracking rate of bamboo is effectively reduced, significantly reduces the content of nutritional ingredient in bamboo, is more conducive to the lifting of its Vermins-proof mildew-proof characteristic, the synthesis of bamboo is higher using quality after drying, and popularizing value is more preferable.
Description
Technical field
The invention belongs to wicker plaiting article processing technique field, and in particular to a kind of bamboo high-quality drying method.
Background technology
Bamboo, You Mingzhu.Scientific name Bambusoideae（Bambusaceae or Bamboo）, it is a branch gramineous,
Subtropical zone is distributed in, there is short seemingly grass, is had again high as set greatly.The rhizome generally crawled by underground grows in flakes.Also may be used
To be referred to as bamboo rice by procreation of blossoming and having seeds, its seed.For perennial plant.There are some species of bamboo shoots edible.For
Tall and big, the rapid grass kind plant of growth, stem are wooden.It is distributed in the torrid zone, subtropical zone to warm temperate zone area, East Asia, Southeast Asia
Most concentrated with being distributed on the Indian Ocean and Pacific Islands, species is also most.Our people always likes bamboo, China and the world
Upper research, cultivate and utilize the earliest country of bamboo.Produced from bamboo in Chinese historical culture development and spirit culture are formed
Raw great function, bamboo and Chinese poems painting and calligraphy and the relation of long standing and well established of gardens construction, and bamboo and people's lives
It is closely bound up in be not difficult to find out, China deserve to be called and is described as " country of bamboo civilization ".
Bamboo is one of raw material common in the processing of existing wicker plaiting article, its corresponding knitting in modern people live compared with
To be common, such as bamboo basket, dustpan, lantern, tea cup mat, special artifacts.And bamboo is during processing is woven
Processing must be dried, not only to improving knitting property, while also for life-span that lifting uses etc..But bamboo is because of itself
Characteristic cause dry during easily ftracture, so as to have impact on the yield rate of processing.This people is entered to processing technology
Go and constantly improved and optimizated, Application No.：201510032854.2 a kind of bamboo softening modified technique is disclosed, disclosed in it
The microwave drying treatment mode of low, high, middle power is used successively, and the effect dried has been effectively ensured, and to being sought in bamboo
The removal effect formed point.But the above method finds that the season cracking rate of bamboo is still higher during actual use, bamboo
Inside it is available for that the removal degree of the nutriment of mould, worm growth is not still high, and the drying quality of bamboo still needs to further be lifted.
The content of the invention
The purpose of the present invention is to be directed to the problem of existing, there is provided a kind of bamboo high-quality drying method.
The present invention is achieved by the following technical solutions：
A kind of bamboo high-quality drying method, comprises the following steps：
（1）Bamboo pre-processes：
After carrying out topping defoliation to the bamboo of fresh felling, then with clear water to rinse rear segment well standby；
（2）Primary drying processing：
By step（1）Bamboo after processing, which is put into microwave drier, carries out a microwave drying treatment, controls the work(of microwave
Rate is 18 ~ 22kW, after the completion of take out it is standby；
（3）Redrying processing：
By step（2）Bamboo after processing is put into freezing processing in freezer, and the temperature for controlling freezing is -15 ~ -20 DEG C, freezing
Taken out after 20 ~ 25min of processing, be then directly placed into progress secondary microwave drying process in microwave drier, control microwave
Power is 40 ~ 50kW, after the completion of it is standby；
（4）Drying process three times：
Work as step（3）After the completion of drying process, the power of microwave drier is risen into 90 ~ 100kW, microwave three times is carried out to bamboo
Drying process, after the completion of take out.
Further, step（2）Described in a microwave drying treatment after bamboo water content be 33 ~ 37%.
Further, step（3）Described in freezer in relative humidity be 15 ~ 20%.
Further, step（3）Described in secondary microwave drying process after bamboo water content be 18 ~ 22%.
Further, step（4）Described in microwave drying treatment three times after bamboo water content be not more than 8%.
In the prior art（Such as Application No.：201510032854.2 a kind of bamboo softening modified technique）Bamboo is carried out
Can still there are the pungent compositions such as cracking rate is higher, nutriment clearance is low, bamboo wood is not mature during drying process to eliminate not
The problems such as good, rational collocation is carried out to existing dry treatment process to this present invention and optimized, it is specifically aqueous with bamboo
Measure and be dried processing for index and be divided into three phases, the water content of fresh bamboo is about 60 ~ 70%, and fresh bamboo is down to
Water content is set to first stage during being 33 ~ 37%, and now bamboo distributes that water is larger, is carried out using the microwave of lower-wattage
Processing prevents moisture loss too fast the defects of causing bamboo surface crack, deform, and bamboo content is down into water for 33 ~ 37%
Content is set to second stage during being 18 ~ 22%, and now bamboo tangential, radial contraction difference when drying is most obvious, corresponding
Drying stress it is most strong, although moisture removal can quickly be gone using high-power microwave, and can to the nutrition in bamboo fiber into
Divide and cleared up, bamboo is carbonized, but be more easy to the cracking for causing bamboo, drying process in stage is carried out the present invention to this
Special adjustment, first bamboo is put into freezer and carries out freezing processing so that the moisture solidification and crystallization in bamboo, while moisture
Volumetric expansion is damaged to tissues such as bamboo fibre cell membranes after crystallization, improves the permeability of fiber, is easy to moisture, is stimulated
Property composition etc. ooze out, then to its direct carry out microwave treatment, now the temperature of microwave treatment is more than 100 DEG C so that moisture
Directly distil, the larger temperature difference improves the drying of the intensity of variation of moisture, more conducively moisture, while promotes again blue or green in bamboo
Bitter stimulating component oozes out, while low temperature improves tangential, radial contraction difference degree when bamboo is dried, and reduces out
Rate is split, three phases are set to during bamboo content is down into water content no more than 8% for 18 ~ 22%, in the work of first two steps process
Under, the permeability lifting of bamboo, mechanical characteristic is effectively retained, and processing now is dried using high-power microwave,
Moisture oozes out more conducively in bamboo, and in the case where moisture is less, damage of the microwave for nutritional ingredient in bamboo disappears
It is stronger to solve effect, the more conducively improvement of bamboo quality.
The present invention has advantages below compared with prior art：
The present invention has carried out special improvement to the drying method of bamboo and handled, and effectively reduces the cracking rate of bamboo, greatly
Width reduces the content of nutritional ingredient in bamboo, is more conducive to the lifting of its Vermins-proof mildew-proof characteristic, the comprehensive use of bamboo after drying
Quality is higher, and popularizing value is more preferable.
Embodiment
Embodiment 1
A kind of bamboo high-quality drying method, comprises the following steps：
（1）Bamboo pre-processes：
After carrying out topping defoliation to the bamboo of fresh felling, then with clear water to rinse rear segment well standby；
（2）Primary drying processing：
By step（1）Bamboo after processing, which is put into microwave drier, carries out a microwave drying treatment, controls the work(of microwave
Rate is 18kW, after the completion of take out it is standby；
（3）Redrying processing：
By step（2）Bamboo after processing is put into freezing processing in freezer, and the temperature for controlling freezing is -15 DEG C, freezing processing
Taken out after 20min, being then directly placed into progress secondary microwave drying process, the power for controlling microwave in microwave drier is
40kW, after the completion of it is standby；
（4）Drying process three times：
Work as step（3）After the completion of drying process, the power of microwave drier is risen into 90kW, microwave drying three times is carried out to bamboo
Processing, after the completion of take out.
Further, step（2）Described in a microwave drying treatment after bamboo water content be 33 ~ 34%.
Further, step（3）Described in freezer in relative humidity be 15 ~ 16%.
Further, step（3）Described in secondary microwave drying process after bamboo water content be 18 ~ 19%.
Further, step（4）Described in microwave drying treatment three times after bamboo water content be not more than 8%.
Embodiment 2
A kind of bamboo high-quality drying method, comprises the following steps：
（1）Bamboo pre-processes：
After carrying out topping defoliation to the bamboo of fresh felling, then with clear water to rinse rear segment well standby；
（2）Primary drying processing：
By step（1）Bamboo after processing, which is put into microwave drier, carries out a microwave drying treatment, controls the work(of microwave
Rate is 20kW, after the completion of take out it is standby；
（3）Redrying processing：
By step（2）Bamboo after processing is put into freezing processing in freezer, and the temperature for controlling freezing is -18 DEG C, freezing processing
Taken out after 23min, being then directly placed into progress secondary microwave drying process, the power for controlling microwave in microwave drier is
45kW, after the completion of it is standby；
（4）Drying process three times：
Work as step（3）After the completion of drying process, the power of microwave drier is risen into 95kW, microwave drying three times is carried out to bamboo
Processing, after the completion of take out.
Further, step（2）Described in a microwave drying treatment after bamboo water content be 35 ~ 36%.
Further, step（3）Described in freezer in relative humidity be 17 ~ 18%.
Further, step（3）Described in secondary microwave drying process after bamboo water content be 20 ~ 21%.
Further, step（4）Described in microwave drying treatment three times after bamboo water content be not more than 7%.
Embodiment 3
A kind of bamboo high-quality drying method, comprises the following steps：
（1）Bamboo pre-processes：
After carrying out topping defoliation to the bamboo of fresh felling, then with clear water to rinse rear segment well standby；
（2）Primary drying processing：
By step（1）Bamboo after processing, which is put into microwave drier, carries out a microwave drying treatment, controls the work(of microwave
Rate is 22kW, after the completion of take out it is standby；
（3）Redrying processing：
By step（2）Bamboo after processing is put into freezing processing in freezer, and the temperature for controlling freezing is -20 DEG C, freezing processing
Taken out after 25min, being then directly placed into progress secondary microwave drying process, the power for controlling microwave in microwave drier is
50kW, after the completion of it is standby；
（4）Drying process three times：
Work as step（3）After the completion of drying process, the power of microwave drier is risen into 100kW, microwave three times is carried out to bamboo and is done
Dry processing, after the completion of take out.
Further, step（2）Described in a microwave drying treatment after bamboo water content be 36 ~ 37%.
Further, step（3）Described in freezer in relative humidity be 19 ~ 20%.
Further, step（3）Described in secondary microwave drying process after bamboo water content be 21 ~ 22%.
Further, step（4）Described in microwave drying treatment three times after bamboo water content be not more than 7%.
Comparative example 1
This comparative example 1 compared with Example 2, saves step（3）Freezing processing operation in redrying processing, in addition
Method and step all same.
Comparative example 2
This comparative example 2 compared with Example 2, by step（3）Redrying processing and step（4）Drying process is micro- three times
The processing power of ripple drying oven is exchanged, method and step all same in addition.
Comparative example 3
This comparative example 3 compared with Example 2, saves step（3）Freezing processing operation in redrying processing, and will step
Suddenly（3）Redrying processing and step（4）The processing power of the microwave drier of drying process is exchanged three times, in addition
Method and step all same.
Control group
Existing bamboo drying method, specially Application No.：201510032854.2 a kind of modified work of bamboo softening
Drying method in skill.
In order to contrast effect of the present invention, to the fresh bamboo with a collection of harvesting respectively with above-described embodiment 2, comparative example
1st, processing is dried in comparative example 2, comparative example 3, the method described in control group, after the completion of to the bamboo after each group processing
Son carries out quality parameter statistics, and specific correction data is as shown in table 1 below：
Table 1
| Season cracking rate（%） | Content of ashes（%） | |
| Embodiment 2 | 1.0 | 0.46 |
| Comparative example 1 | 2.4 | 0.61 |
| Comparative example 2 | 1.9 | 0.73 |
| Comparative example 3 | 3.0 | 0.88 |
| Control group | 3.4 | 0.94 |
Drying method of the present invention can effectively reduce the cracking rate of bamboo it can be seen from upper table 1, while can also reduce ash
The content for nutritional ingredient of grading, the material conditions of entomogenous fungi growth are eliminated, enhance the resistance to mould resistance to characteristic of damaging by worms of bamboo, comprehensive product
Matter is preferable, great popularizing value.
Claims (5)
1. a kind of bamboo high-quality drying method, it is characterised in that comprise the following steps：
（1）Bamboo pre-processes：
After carrying out topping defoliation to the bamboo of fresh felling, then with clear water to rinse rear segment well standby；
（2）Primary drying processing：
By step（1）Bamboo after processing, which is put into microwave drier, carries out a microwave drying treatment, controls the work(of microwave
Rate is 18 ~ 22kW, after the completion of take out it is standby；
（3）Redrying processing：
By step（2）Bamboo after processing is put into freezing processing in freezer, and the temperature for controlling freezing is -15 ~ -20 DEG C, freezing
Taken out after 20 ~ 25min of processing, be then directly placed into progress secondary microwave drying process in microwave drier, control microwave
Power is 40 ~ 50kW, after the completion of it is standby；
（4）Drying process three times：
Work as step（3）After the completion of drying process, the power of microwave drier is risen into 90 ~ 100kW, microwave three times is carried out to bamboo
Drying process, after the completion of take out.
A kind of 2. bamboo high-quality drying method according to claim 1, it is characterised in that step（2）Described in
A microwave drying treatment after bamboo water content be 33 ~ 37%.
A kind of 3. bamboo high-quality drying method according to claim 1, it is characterised in that step（3）Described in
Freezer in relative humidity be 15 ~ 20%.
A kind of 4. bamboo high-quality drying method according to claim 1, it is characterised in that step（3）Described in
Secondary microwave drying process after bamboo water content be 18 ~ 22%.
A kind of 5. bamboo high-quality drying method according to claim 1, it is characterised in that step（4）Described in
Microwave drying treatment three times after bamboo water content be not more than 8%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710754001.9A CN107504763B (en) | 2017-08-29 | 2017-08-29 | High-quality drying treatment method for bamboos |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710754001.9A CN107504763B (en) | 2017-08-29 | 2017-08-29 | High-quality drying treatment method for bamboos |
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| CN107504763A true CN107504763A (en) | 2017-12-22 |
| CN107504763B CN107504763B (en) | 2020-04-10 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110940152A (en) * | 2019-11-14 | 2020-03-31 | 国家林业和草原局竹子研究开发中心 | Microwave rapid continuous drying method for bamboo wood |
| CN115493364A (en) * | 2022-09-27 | 2022-12-20 | 南京中科药业有限公司 | Microwave drying process for astragalus aqueous extract |
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| CN103446191A (en) * | 2013-08-27 | 2013-12-18 | 王辉 | Freeze-drying method capable of remarkably improving quality of fermentative cordyceps sinensis mycelia |
| CN104626309A (en) * | 2015-01-23 | 2015-05-20 | 浙江三箭工贸有限公司 | Bamboo softening and modifying technology |
| CN106343426A (en) * | 2016-09-07 | 2017-01-25 | 合肥元政农林生态科技有限公司 | High-quality drying processing method for Osmunda Japonica Thunb |
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- 2017-08-29 CN CN201710754001.9A patent/CN107504763B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1554292A (en) * | 2003-12-22 | 2004-12-15 | 浙江海通食品集团股份有限公司 | Method for processing leisure seasoning dewatered fruit and vegetable |
| CN101228896A (en) * | 2007-10-23 | 2008-07-30 | 江南大学 | Method of combining freeze-dry and vacuum microwave drying to preparing fruits, vegetables and aquatic leisure food |
| CN101305746A (en) * | 2008-05-30 | 2008-11-19 | 宁国市乡味源农产品开发有限公司 | Preservation method of bamboo shoot |
| KR20100001375A (en) * | 2008-06-27 | 2010-01-06 | 김기호 | New method for preparing the low molecular fucoidan from the brown algae fermentation |
| CN103446191A (en) * | 2013-08-27 | 2013-12-18 | 王辉 | Freeze-drying method capable of remarkably improving quality of fermentative cordyceps sinensis mycelia |
| CN104626309A (en) * | 2015-01-23 | 2015-05-20 | 浙江三箭工贸有限公司 | Bamboo softening and modifying technology |
| CN106343426A (en) * | 2016-09-07 | 2017-01-25 | 合肥元政农林生态科技有限公司 | High-quality drying processing method for Osmunda Japonica Thunb |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110940152A (en) * | 2019-11-14 | 2020-03-31 | 国家林业和草原局竹子研究开发中心 | Microwave rapid continuous drying method for bamboo wood |
| CN110940152B (en) * | 2019-11-14 | 2021-09-03 | 国家林业和草原局竹子研究开发中心 | Microwave rapid continuous drying method for bamboo wood |
| CN115493364A (en) * | 2022-09-27 | 2022-12-20 | 南京中科药业有限公司 | Microwave drying process for astragalus aqueous extract |
| CN115493364B (en) * | 2022-09-27 | 2024-03-29 | 南京中科药业有限公司 | Microwave drying process for astragalus water extract |
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