CN112021069A - Color conversion treatment method for tremella aurantialba industrial cultivation - Google Patents
Color conversion treatment method for tremella aurantialba industrial cultivation Download PDFInfo
- Publication number
- CN112021069A CN112021069A CN202010948739.0A CN202010948739A CN112021069A CN 112021069 A CN112021069 A CN 112021069A CN 202010948739 A CN202010948739 A CN 202010948739A CN 112021069 A CN112021069 A CN 112021069A
- Authority
- CN
- China
- Prior art keywords
- color conversion
- cultivation
- golden fungus
- color
- tremella aurantialba
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G18/00—Cultivation of mushrooms
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G18/00—Cultivation of mushrooms
- A01G18/60—Cultivation rooms; Equipment therefor
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G18/00—Cultivation of mushrooms
- A01G18/60—Cultivation rooms; Equipment therefor
- A01G18/69—Arrangements for managing the environment, e.g. sprinklers
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Mycology (AREA)
- Environmental Sciences (AREA)
- Mushroom Cultivation (AREA)
Abstract
The invention belongs to the field of edible fungus cultivation, and particularly relates to a color conversion treatment method for tremella aurantialba factory cultivation. The method divides the color change management of the golden fungus sporocarp into two stages, wherein the first stage is 20-25 days after inoculation, and dark culture is carried out in the first stage; the second stage is 45-55 days after inoculation, illumination culture is carried out in the stage, illumination management is carried out by using a special light source, and the light emitted by the special light source is blue light with the wavelength of 400-500 nm. The implementation of the invention can obtain high-yield, complete and consistent tremella aurantialba fruiting body with color conversion under indoor cultivation conditions, the yield of a single bag of the tremella aurantialba fruiting body reaches 617.54g, and the color conversion consistency of the tremella aurantialba fruiting body reaches 95.33%.
Description
Technical Field
The invention belongs to the field of edible fungus cultivation, and particularly relates to a color conversion treatment method for tremella aurantialba factory cultivation.
Background
In the cultivation management method reported in the golden fungus cultivation field at present, the treatment aiming at the color change of the golden fungus comprises the following steps: natural scattered light and 500lx lamplight[1-6]. The two illumination modes are proved to have the following problems:
when natural scattered light is used as a light source for indoor cultivation, the light can only be collected through the window, and the light cannot be uniformly dispersed in the mushroom house. The golden fungus close to the lighting point is orange after the fruiting body is mature due to more received light, and has better commodity properties; since the light rays of the tremella aurantialba farther from the lighting point are shielded, the received light is less, the mature fruit bodies are light yellow, and the commodity characters are poor. The color of the tremella aurantialba fruiting bodies produced by the management method is not uniform, the problem of unstable product quality exists, and the commodity value is correspondingly influenced.
When the tremella aurantialba is cultivated in a greenhouse with rich natural illumination, although the color of the tremella aurantialba is good, the tremella aurantialba is serious in mixed fungus pollution, many in pests, much in dust, poor in mushroom quality and low in yield.
When light is used as a light source for indoor cultivation, the illuminating lamps can be uniformly installed according to the placement of the fruiting shelf, but the existing light is white light, the illumination intensity is 500lx, and the mature tremella aurantialba sporocarp produced by the illumination method is uniform in color, is light yellow, has poor commodity properties and is long in color change time. The management method has the problems of poor product quality, correspondingly low commodity value and long cultivation period.
The existing illumination management method aiming at indoor cultivation of the tremella aurantialba cannot produce the tremella aurantialba fruiting bodies with uniform quality and high commodity value, and cannot be applied to industrial cultivation of the tremella aurantialba.
Summary of The Invention
In order to produce the golden fungus fruiting body with uniform quality and higher commodity value through the facility and factory cultivation of the golden fungus, the invention provides a golden fungus fruiting body color conversion treatment method and a special light source thereof, which are used for improving the color conversion consistency and the color grade of the golden fungus fruiting body.
The inventor firstly carries out preliminary experiments and finds out the temperature, the humidity and the CO in the mushroom house2On the premise of reaching the concentration standard, if no light stimulation exists, the golden fungus fruiting body can not change color, and the color is off-white. Therefore, the phenomenon that the golden fungus with high commodity value can be produced in orange under natural light and only light yellow golden fungus can be produced under white light is combined to prove that the illumination is one of the essential factors for changing the color of the golden fungus, and the light component is presumed to be applied to the golden fungusThe color development of the fruit body has a great influence. Therefore, the inventor conducts screening tests on the light color of the golden fungus cultivation management, and the results show that the color of the golden fungus fruiting body which changes color under different light colors is obviously different, and the golden fungus fruiting body can be classified into 3 grades according to the color classification standard of the golden fungus commodity property. The light color of the lamp has obvious influence on the commodity characters of the golden fungus sporocarp. The color of the tremella aurantialba sporocarp treated by blue light is better than that of the tremella aurantialba sporocarp treated by other various light colors.
In addition, the inventor also proves that the color conversion starting time in the cultivation and management of the tremella aurantialba has obvious influence on the yield and the quality of the tremella aurantialba fruiting bodies, the optimal color conversion starting time is 20-25 days after inoculation, the yield of the tremella aurantialba fruiting bodies is lower when the color conversion starting time is earlier than 20 days after inoculation, and the color conversion of the tremella aurantialba fruiting bodies is incomplete when the color conversion starting time is later than 35 days after inoculation.
The invention provides a color conversion treatment method for golden fungus industrial cultivation, which is characterized in that the management of color conversion of golden fungus sporocarp is performed in sections, dark cultivation is performed firstly, illumination cultivation is performed after the golden fungus sporocarp grows for a certain time, and color conversion induction is performed by using a special light source.
According to the invention, the dark culture time of the golden fungus sporocarp is 20-25 days, the starting time of the illumination culture is 20-25 days after inoculation, and the period of the illumination culture is 25-30 days.
According to the invention, the color conversion induction of the golden fungus fruiting body adopts a special light source, the emitted light is blue light, and the wavelength is 400-500 nm.
According to the invention, the brightness of the special light source is not limited, and the types of the special light source can be bulbs, lamp beads, lamp belts, lamp tubes, lamp strips and other lighting equipment in any form and shape.
According to the invention, CO in mushroom house is maintained during the color conversion induction period of golden fungus2The concentration is less than 1200ppm, and the humidity in the mushroom house is kept between 75 and 100 percent.
Specifically, the method of the invention comprises the following steps:
(1) manufacturing golden fungus cultivation bags;
(2) culturing Tremella aurantialba cultivation bags in dark, namely placing the prepared Tremella aurantialba cultivation bags in a dark culture room for culturing for 20-25 days, and allowing the Tremella aurantialba fruiting bodies to grow to a certain size and to be beige or beige;
(3) performing color conversion culture on the golden fungus sporocarp, namely starting a blue light illumination facility 20-25 days after inoculation of the golden fungus cultivation bag, performing color conversion management, wherein the wavelength range of blue light is 400-500nm, the blue light illumination time is 25-30 days, and then the golden fungus sporocarp is completely converted in color and is orange in color; and
(4) and harvesting after the color of the golden fungus sporocarp is changed.
The invention also provides application of the blue light illumination in color conversion treatment of the golden fungus industrial cultivation.
Effects of the invention
The color of the tremella aurantialba sporocarp which changes color under different light colors is obviously different, and the commercial characters are greatly different, wherein the blue light treatment effect is the best, and the first-level color proportion of the tremella aurantialba sporocarp is the highest. In addition, the color conversion starting time is 25-30 days, and the yield and the color conversion effect are the best.
The implementation of the invention can obtain high-yield, complete and consistent tremella aurantialba fruiting body with color conversion under indoor cultivation conditions, the yield of a single bag of the tremella aurantialba fruiting body reaches 617.54g, and the color conversion consistency of the tremella aurantialba fruiting body reaches 95.33%.
Brief description of the drawings
In order to more clearly describe the technical solution of the present invention, the following brief description is provided with reference to the accompanying drawings. It should be apparent that these drawings depict only some specific embodiments of the invention herein. The present invention includes, but is not limited to, the following figures:
fig. 1 shows the effect of different light colors on the color change of aurora.
Examples
In order to further understand the present invention, the following will clearly and completely describe the technical solutions of the present invention with reference to the specific embodiments of the present invention. It is to be understood that the described embodiments are part, and not all, of the present invention. All variations that can be made by a person skilled in the art on the basis of the embodiments of the invention without inventive step fall within the scope of the invention as claimed.
The percentages of the present invention are by weight unless otherwise specified.
Example 1
1 cultivation bag production
1.1 culture medium formula of Tremella aurantialba cultivation bag
48.9 percent of cotton seed hulls, 40 percent of mixed wood chips, 10 percent of wheat bran, 1 percent of gypsum powder and KH2PO40.1%, water content 62%, natural pH.
1.2 preparation method of culture medium for Tremella aurantialba cultivation bag
Firstly, taking a wood chip sample for water content determination, calculating the actual wood chip amount, the component amount and the water addition amount according to the wood chip water content determination result, the preparation water content of 62% and the bagging amount, weighing the components according to the calculation result, putting the components into a blender, adding water, fully mixing and stirring uniformly, putting the components into polypropylene bags after the blending is finished, sealing the bags by using an aluminum buckle or a sleeve cover, transferring the bags into a sterilization cabinet, sterilizing for 1.5 hours under damp-heat high pressure (121 ℃), and cooling to below 25 ℃ for later use.
1.3 inoculation of Tremella Aurantialba cultivation bags
The prepared cultivation bag is inoculated with the stereum hirsutum firstly, and then inoculated with the tissue blocks of the golden fungus sporocarp cultivar.
2 cultivation of Tremella aurantialba culture bags
2.1 cultivation of Tremella aurantialba in dark
Transferring the inoculated mushroom into a mushroom house for dark culture at 18-20 ℃ after inoculation, keeping the humidity between 50-65 percent and CO in the mushroom house2The concentration is not controlled, and after the tremella aurantialba fruiting body starts to regenerate, humidification is given and the humidity is kept between 75% and 100%. After culturing for 20-25 days, the diameter of the golden fungus fruiting body reaches 6-8cm, the color is beige, and the golden fungus fruiting body is transferred to a light culture stage for color conversion induction culture.
2.2 cultivation of Tremella aurantialba by illumination
After 20-25 days of black-dark culture after tremella aurantialba inoculation, the tremella aurantialba is subjected to a light illumination culture stage, a blue LED lamp band is turned on, the wavelength is 460-465nm, the light illumination is normally on, the concentration of CO2 in a mushroom house is controlled to be lower than 1200ppm, the humidity is kept between 75% and 100%, the whole color of the tremella aurantialba fruiting body is induced to be bright orange after 25-30 days of color conversion, the yield is 619.23 g/bag, and the primary color proportion is 96.03%.
3 harvesting
Cutting off the ear base along the edge of the fungus bag by using a banana knife.
Example 2
1 cultivation bag production
1.1 culture medium formula of Tremella aurantialba cultivation bag
83.9 percent of miscellaneous wood chips, 15 percent of wheat bran, 1 percent of gypsum powder and KH2PO40.1%, water content 62%, natural pH.
1.2 preparation method of culture medium for Tremella aurantialba cultivation bag
Firstly, taking a wood chip sample for water content measurement, defaulting the water content of the rest raw materials to zero, calculating the actual wood chip usage amount, the usage amount of each component and the addition amount of water according to the wood chip water content measurement result, the preparation water content of 62 percent and the bagging amount, weighing each component according to the calculation result, putting the components into a blender, adding water, fully mixing and stirring uniformly, putting the components into polypropylene bags after the stirring is finished, sealing the bags by using an aluminum buckle through a tying machine or a lantern ring cover, transferring the bags into a sterilization cabinet, sterilizing for 1.5 hours under damp-heat high pressure (121 ℃), and cooling to below 25 ℃ for later use.
1.3 inoculation of Tremella Aurantialba cultivation bags
The prepared cultivation bag is inoculated with the stereum hirsutum firstly, and then inoculated with the tissue blocks of the golden fungus sporocarp cultivar.
2 cultivation of Tremella aurantialba culture bags
2.1 cultivation of Tremella aurantialba in dark
Transferring the inoculated mushroom into a mushroom house for dark culture at 18-20 ℃ after inoculation, keeping the humidity between 50-65 percent and CO in the mushroom house2The concentration is not controlled, and humidification is given after the tremella aurantialba sporocarp begins to regenerate and the humidity is kept between 95% and 100%. After culturing for 20-25 days, the diameter of the golden fungus fruiting body reaches 6-8cm, the color is beige, and the golden fungus fruiting body is transferred to a light culture stage for color conversion induction culture.
2.2 cultivation of Tremella aurantialba by illumination
After 20-25 days of black-dark culture after tremella aurantialba inoculation, entering a light illumination culture stage, starting a blue LED lamp bar, controlling the wavelength to be 460-465nm, normally opening the light illumination, controlling the CO2 concentration in a mushroom house to be lower than 1200ppm, keeping the humidity to be 75-100%, inducing the whole color of the tremella aurantialba fruiting body to be bright orange after 15-25 days of color conversion, and leading the yield to be 627.35 g/bag, wherein the primary color proportion is 96.72%.
3 harvesting
Cutting off the ear base along the edge of the fungus bag by using a banana knife.
Examples of effects
The color of the tremella aurantialba fruiting body which is changed in color under different light colors is obviously different (see figure 1), and the commercial characters and the yield are greatly different (see tables 1 and 2).
The first-grade color of the tremella aurantialba fruiting body treated by blue light is the highest, 95.33%, and is obviously higher than that of other treatments; the ratio of primary color of yellow light to white light treatment was 86.33% and 85.33%, respectively, and the fruiting body without primary color was treated in the other treatments. 87.33% of green-treated fruiting body is three-level color, and all the fruiting bodies under red treatment are three-level color; the color of the fruiting body of Tremella Aurantialba is not changed under dark treatment, and the product appearance is not possessed.
Table 1: influence of different light colors on golden fungus color conversion
Table 2: influence of color conversion starting time on yield and color conversion of golden fungus fruiting body
Reference to the literature
[1] Chenzhilan, Hejiangqing, Zhang Fuping, Tremella Aurantialba separation and domestication test brief report [ J ] edible fungus, 2005,27(6):14-15.
[2] D Hu Guang, golden fungus character and high yield and quality cultivation technology [ J ] Beijing agriculture, 2006(10):20-21.
[3] The preparation technology research of effective strains of Tagetian, Zhaodan, Zhaoyangchang, Tremella aurantialba [ J ]. agricultural academy of southwest, 2010,23(05):1620 and 1624.
[4] Liu Zheng nan, Zheng Shufang, jin Er physiological characteristics and effective excellent strain preparation principle (continuation) [ J ] Chinese edible fungus, 1995(06):9-11.
[5] Liuxin, Liuhong, Zhao Lin, etc. preliminary study of cultivation conditions of tremella aurantialba [ J ] Chinese edible fungus, 2019(5).
[6] Wuxi Peng, bag cultivation of golden fungus to change color [ J ] Zhejiang edible fungus, 1995(1):27-27.
Claims (7)
1. A color conversion treatment method for the industrial cultivation of the golden fungus is characterized in that the management of color conversion of the golden fungus sporocarp is carried out in sections, dark cultivation is carried out firstly, illumination cultivation is carried out after the golden fungus sporocarp grows for a certain time, and a special light source is used for color conversion induction.
2. The color-conversion treatment method according to claim 1, wherein the fruiting body of Tremella aurantialba is cultured in dark for 20-25 days, the light culture is started for 20-25 days after inoculation, and the period of light culture is 25-30 days.
3. The method as claimed in claim 1 or 2, wherein the color transformation of the golden fungus fruiting body is induced by using a special light source, the emitted light is blue light, and the wavelength is 400-500 nm.
4. The color conversion process of claim 3, wherein the dedicated light source is selected from the group consisting of a bulb, a bead, a strip, a tube, a strip and any other form and shape of lighting device.
5. The color conversion treatment method according to any one of claims 1 to 4, wherein CO in the mushroom chamber is maintained during the induction of color conversion of golden fungus2The concentration is less than 1200ppm, and the humidity in the mushroom house is kept between 75 and 100 percent.
6. A color conversion treatment method for tremella aurantialba factory cultivation comprises the following steps:
1) manufacturing golden fungus cultivation bags;
2) culturing the golden fungus cultivation bag in the dark, namely placing the prepared golden fungus cultivation bag in a dark culture room for culturing for 30-35 days, and enabling the golden fungus fruiting body to grow to be beige or beige in a certain size;
3) performing color conversion culture on the golden fungus sporocarp, namely starting a blue light illumination facility 20-25 days after inoculation of the golden fungus cultivation bag, performing color conversion management, wherein the wavelength range of blue light is 400-500nm, the blue light illumination time is 25-30 days, and then the golden fungus sporocarp is completely converted in color and is orange in color; and
4) and harvesting after the color of the golden fungus sporocarp is changed.
7. The application of blue light illumination in color conversion treatment of the golden fungus industrial cultivation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010948739.0A CN112021069A (en) | 2020-09-10 | 2020-09-10 | Color conversion treatment method for tremella aurantialba industrial cultivation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010948739.0A CN112021069A (en) | 2020-09-10 | 2020-09-10 | Color conversion treatment method for tremella aurantialba industrial cultivation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112021069A true CN112021069A (en) | 2020-12-04 |
Family
ID=73584725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010948739.0A Pending CN112021069A (en) | 2020-09-10 | 2020-09-10 | Color conversion treatment method for tremella aurantialba industrial cultivation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112021069A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113876626A (en) * | 2021-10-29 | 2022-01-04 | 中国药科大学 | Composition with protective effect on skin cell damage induced by blue light and application of composition in cosmetics |
| CN114679998A (en) * | 2022-04-07 | 2022-07-01 | 黑龙江苇沙河农业科技开发有限公司 | Industrial cultivation technology for tremella aurantialba |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109832091A (en) * | 2019-01-20 | 2019-06-04 | 香格里拉市腊玛农产品开发有限公司 | A kind of cultural method of the golden ear of half bag of mulberry wood chips plantation |
| CN111357565A (en) * | 2020-05-07 | 2020-07-03 | 云南菌视界生物科技有限公司 | Tremella aurantialba cultivation method adopting fungi bag ring type multipoint inoculation and hanging bag fruiting |
-
2020
- 2020-09-10 CN CN202010948739.0A patent/CN112021069A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109832091A (en) * | 2019-01-20 | 2019-06-04 | 香格里拉市腊玛农产品开发有限公司 | A kind of cultural method of the golden ear of half bag of mulberry wood chips plantation |
| CN111357565A (en) * | 2020-05-07 | 2020-07-03 | 云南菌视界生物科技有限公司 | Tremella aurantialba cultivation method adopting fungi bag ring type multipoint inoculation and hanging bag fruiting |
Non-Patent Citations (6)
| Title |
|---|
| 刘世玲等: "《现代食用菌栽培实用技术问答》", 31 March 2019, 湖北科学技术出版社 * |
| 刘娜等: "蛹虫草发育不同光质筛选试验", 《园艺与种苗》 * |
| 宋莹等: "不同光质的LED光源对香菇菌丝生长及转色影响研究", 《园艺与种苗》 * |
| 李玉等: "光照对食用菌生长发育影响的研究进展", 《食用菌》 * |
| 王媛媛等: "光照对高等真菌生长发育影响的研究进展", 《食品工业科技》 * |
| 陈士瑜等: "《菇菌栽培手册 220种食、药用菌的驯化状况及栽培方法》", 28 February 2003, 科学技术文献出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113876626A (en) * | 2021-10-29 | 2022-01-04 | 中国药科大学 | Composition with protective effect on skin cell damage induced by blue light and application of composition in cosmetics |
| CN113876626B (en) * | 2021-10-29 | 2023-03-17 | 中国药科大学 | Composition with protective effect on blue light induced skin cell damage and application of composition in cosmetics |
| CN114679998A (en) * | 2022-04-07 | 2022-07-01 | 黑龙江苇沙河农业科技开发有限公司 | Industrial cultivation technology for tremella aurantialba |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108559491B (en) | Full spectrum fluorescent powder, Quan Guangpu diode and full spectrum plant lamp | |
| CN106665319B (en) | Cultivation luminous environment and cultivation method for lettuce vegetables | |
| CN112021069A (en) | Color conversion treatment method for tremella aurantialba industrial cultivation | |
| CN108022922A (en) | One kind is suitable for plant illumination LED light source | |
| CN104748073A (en) | Full spectrum suitable for LED plant growing compound light | |
| CN105103894B (en) | A kind of energy-efficient test tube potato production method | |
| CN114521410A (en) | Laser seedling raising method and rice cultivation method based on same | |
| CN107556611A (en) | It is a kind of suitable for conversion film of vegetables greenhouse cultivation and preparation method thereof | |
| CN108812266B (en) | Method for reducing nitrate content of hydroponic lettuce | |
| CN104370620A (en) | Cordyceps militaris cultivation culture media for increasing carotenoid content, and culture method | |
| CN111280040B (en) | Green onion cultivation method under LED light modulation control | |
| KR20160092135A (en) | Lighting source for plant production and cultivation method using this | |
| CN102647833A (en) | Smart illumination control system for artificial cultivation of dendrobium candidum | |
| CN107726251A (en) | A kind of light fixture | |
| CN106678621A (en) | LED light source promoting flowers to grow | |
| CN112970513A (en) | Photosynthetic cultivation system and cultivation method for hypsizygus marmoreus | |
| CN111386972A (en) | Inoculation method of edible fungus sticks | |
| CN109601311A (en) | A method of preventing soybean seedling excessive growth | |
| CN107964512B (en) | Anti-counterfeiting edible fungus strain and preparation method thereof | |
| Yang et al. | Plant Growth and Energy Use Efficiency of Purple Basil as Affected by Different Green-Blue Light Ratios | |
| CN107652626A (en) | A kind of LED | |
| CN112470818B (en) | Cultivation method of Tremella sanguinea Excellent strains | |
| CN107674379A (en) | A kind of LED light bar | |
| CN102577973B (en) | Tissue culture method for Cymbidium floribundum | |
| JP2008173041A (en) | Method for increasing vitamin-d content of mushroom |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20201204 |
|
| WD01 | Invention patent application deemed withdrawn after publication |