CN115067540B - Apple extract for cigarettes and preparation method thereof - Google Patents

Apple extract for cigarettes and preparation method thereof Download PDF

Info

Publication number
CN115067540B
CN115067540B CN202210809096.0A CN202210809096A CN115067540B CN 115067540 B CN115067540 B CN 115067540B CN 202210809096 A CN202210809096 A CN 202210809096A CN 115067540 B CN115067540 B CN 115067540B
Authority
CN
China
Prior art keywords
apple
apple extract
cigarettes
extract
dried
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.)
Active
Application number
CN202210809096.0A
Other languages
Chinese (zh)
Other versions
CN115067540A (en
Inventor
邵兴伟
尹团章
齐富友
刘吟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WUHAN YELLOW CRANE TOWER NEW MATERIAL TECHNOLOGY DEVELOPMENT CO LTD
China Tobacco Hubei Industrial LLC
Original Assignee
WUHAN YELLOW CRANE TOWER NEW MATERIAL TECHNOLOGY DEVELOPMENT CO LTD
China Tobacco Hubei Industrial LLC
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by WUHAN YELLOW CRANE TOWER NEW MATERIAL TECHNOLOGY DEVELOPMENT CO LTD, China Tobacco Hubei Industrial LLC filed Critical WUHAN YELLOW CRANE TOWER NEW MATERIAL TECHNOLOGY DEVELOPMENT CO LTD
Priority to CN202210809096.0A priority Critical patent/CN115067540B/en
Publication of CN115067540A publication Critical patent/CN115067540A/en
Application granted granted Critical
Publication of CN115067540B publication Critical patent/CN115067540B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • AHUMAN NECESSITIES
    • A24TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24BMANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B15/00Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
    • A24B15/18Treatment of tobacco products or tobacco substitutes
    • A24B15/24Treatment of tobacco products or tobacco substitutes by extraction; Tobacco extracts
    • AHUMAN NECESSITIES
    • A24TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24BMANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B15/00Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
    • A24B15/18Treatment of tobacco products or tobacco substitutes
    • AHUMAN NECESSITIES
    • A24TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24BMANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
    • A24B3/00Preparing tobacco in the factory
    • A24B3/12Steaming, curing, or flavouring tobacco

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Seasonings (AREA)

Abstract

The application discloses a preparation method of apple extract for cigarettes, which comprises the following steps: adding ethanol solution into dried apples, performing ultrasonic extraction, and filtering to obtain ultrasonic filtrate; standing the ultrasonic filtrate at 2-8deg.C, centrifuging to obtain centrifugate, and concentrating under reduced pressure to obtain dried apple extract; peeling fresh apples, cold pressing and filtering to obtain clear apple juice; molecular distillation is carried out on the clarified apple juice, and light components are collected to obtain apple aroma components; and adding the apple aroma components into the dried apple extract, and uniformly mixing to obtain the apple extract for cigarettes. The application also provides an apple extract for cigarettes. The apple extract for cigarettes provided by the invention has the advantages that the quality is more stable, the characteristic aroma of apples is stronger, and the smoke concentration and the sweet taste of the oral cavity are obviously improved.

Description

Apple extract for cigarettes and preparation method thereof
Technical Field
The application relates to the technical field of tobacco essence and spice, in particular to a tobacco apple extract and a preparation method thereof.
Background
The cigarette flavoring is a key technology for cigarette production, is an important means for stabilizing the smoking quality of cigarettes, can improve the quality and market competitiveness of cigarette products, builds unique taste and style of Chinese cigarettes, and realizes the differentiation of product quality.
The natural apple extract is a Chinese style cigarette core product of yellow crane building brand, the annual average dosage exceeds 5 tons, and the Chinese style cigarette has the effects of enriching the smoke aroma, improving the smoke concentration, increasing the sweet feeling and the like when being applied to cigarettes.
The existing natural apple extract is prepared by adopting a traditional cold pressing combined decompression concentration method, and the following problems are found in long-term practice: firstly, because of uncontrollable factors such as seasons, production places, maturity, storage time and the like, the fragrance, sugar and acid content of the apple raw materials are not small; secondly, the content of sugar and acid in the extract can effectively improve the smoke concentration and the sweet feeling of the oral cavity, and when the difference of the sugar and acid content of different batches of apple raw materials is larger, the quality difference of the extract is larger; thirdly, a large amount of aroma components are lost in the production process by combining the traditional cold pressing method with the decompression concentration method, so that the aroma of the extract is not obvious enough, and the characteristic aroma of apples in sensory evaluation is not abundant enough.
Therefore, how to provide a preparation method of apple extract, which reduces the difference between different batches, and simultaneously retains more aroma components, is a technical problem to be solved by those skilled in the art.
Disclosure of Invention
In order to solve the technical problems, a first object of the present invention is to provide a preparation method of apple extract for cigarettes; the second object of the invention is to provide the apple extract for cigarettes prepared by the preparation method; the apple extract for cigarettes provided by the invention has the advantages that the quality is more stable, the characteristic aroma of apples is stronger, and the smoke concentration and the sweet taste of the oral cavity are obviously improved.
The technical scheme provided by the invention is as follows:
a preparation method of apple extract for cigarettes comprises the following steps:
adding ethanol solution into dried apples, performing ultrasonic extraction, and filtering to obtain ultrasonic filtrate; standing the ultrasonic filtrate at 2-8deg.C, centrifuging to obtain centrifugate, and concentrating under reduced pressure to obtain dried apple extract;
peeling fresh apples, cold pressing and filtering to obtain clear apple juice; molecular distillation is carried out on the clarified apple juice, and light components are collected to obtain apple aroma components;
and adding the apple aroma components into the dried apple extract, and uniformly mixing to obtain the apple extract for cigarettes.
Preferably, the dried apples are golden apple;
the fresh apple is Acess apple.
Preferably, the weight of the ethanol solution is 5-10 times of the dry weight of apples, and the volume percentage concentration of the ethanol solution is 40-60%. More preferably, the weight of the ethanol solution is 5-6 times of the dry weight of the apples, and the volume percentage concentration of the ethanol solution is 40-50%.
Preferably, the ultrasonic extraction temperature is 40-60deg.C, frequency is 50-100KHz, ultrasonic power is 100-200W, and ultrasonic extraction time is 30-60min.
Preferably, the ultrasonic filtrate is kept stand for 5-10 hours; and/or the number of the groups of groups,
the ultrasonic filtrate is kept stand at 2-5 ℃.
Preferably, the centrifugal speed is 500-1000r/min, the centrifugal power is 100-200W, and the centrifugal time is 10-30min.
Preferably, concentrating the centrifugate under reduced pressure to relative density of 1.250-1.350 to obtain dry apple extract.
Preferably, the molecular distillation is carried out at a feed rate of 10-20g/min, a doctor blade rate of 300-500r/min, a distillation temperature of 40-60℃and a distillation pressure of 10-30 Pa. The light component obtained by molecular distillation in the present application refers to a volatile component having a remarkable characteristic aroma. In the production process, experiments are carried out according to different raw materials, and the proper molecular distillation process of the batch of raw materials is determined through sensory evaluation means such as smell, suction and the like, and then the mass production is carried out.
Preferably, the mass ratio of the apple aroma-generating component to the dried apple extract is 1 (10-20) when mixed.
An apple extract for cigarettes, prepared by the preparation method of any one of the above.
The invention provides a preparation method of apple extract for cigarettes, which comprises the steps of carrying out ultrasonic extraction on dried apples by ethanol solution, standing, centrifuging, concentrating under reduced pressure to obtain the dried apple extract, carrying out cold pressing and molecular distillation on fresh apples to obtain apple aroma components, and mixing the apple aroma components with the dried apple extract to obtain the apple extract for cigarettes.
According to the method, the dried apple extract is prepared from dried apples, the dried apples are not affected by seasons, meanwhile, the dried apples can be stored for a long time, and the sugar and acid content is not changed greatly, so that the quality of the prepared extract is more stable, and the inter-batch difference of the apple extract for cigarettes is reduced; the apple aroma component is prepared by adopting a low-temperature treatment method to fresh apples in the whole process, effectively enriching the green and sweet aroma of natural apples through efficient enrichment means such as molecular distillation and the like, and adding the natural apples into the dried apple extract, so that the special apple aroma of the extract can be given only by a small amount of the apple aroma, the raw material cost is effectively reduced, the special apple aroma in the apple extract for cigarettes is stronger, the smoke concentration and the sweet taste of the oral cavity are obviously improved, and the quality is more stable.
Further, the present application preferably uses dried golden apple and fresh Ackesu apple. Sugar and acid content in the golden apple stem is obviously higher than that of other common varieties, and the green and sweet flavors of the Acheson apples are stronger and lasting, and the coordination with cigarettes is better. The aroma of Acheson combines with the sweet and sour taste of golden commander, so that the aroma of the extract is more abundant, and the smoke concentration and the sweet taste of the oral cavity are obviously improved.
In the application, the dried golden apple is purchased outsourcly, and whether the dried golden apple is qualified raw material is judged through sensory indexes such as color, taste, smell and the like during purchase. The raw material amount can be used in the preparation process of the apple extract for cigarettes in batches, and the variation of sugar and acid content of the dried apples in the long-term storage process is small, so that the difference between spice batches prepared by using the same batch of the golden apple trunk can be ensured to be small. Meanwhile, the raw materials can be kept stable in the period of mature harvest by controlling the purchase quantity of the golden apple trunk.
The Acheson apple is used for extracting apple aroma components, and the dosage of the component is greatly smaller than that of the dried apple extract; meanwhile, a batch of Ackesu apples are purchased, and the apple aroma component obtained by extraction can be used for preparing multiple batches of apple extracts for cigarettes. In addition, the quality of the purchased raw materials can be ensured by a sensory evaluation method when each batch of Ackefir apples are purchased.
In the application, the steps of preparing the dried apple extract and preparing the apple aroma component have no sequence requirement, and the dried apple extract can be prepared first, or the apple aroma component can be prepared first, so long as the dried apple extract and the apple aroma component are prepared and then uniformly mixed (preferably uniformly shaken).
In the present application, the centrate is obtained by direct filtration through a screen in a centrifuge.
In this application, cold pressing is performed using juicing equipment and operations conventionally used in the art.
Detailed Description
In order to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below, and it is obvious that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
Example 1
Preparing dried apple extract:
1) Adding ethanol solution into dried golden apple, and placing into an ultrasonic device for ultrasonic extraction; wherein the weight of the ethanol solution is 5 times of the dry weight of the apples, and the volume percentage concentration of the ethanol solution is 40%; the temperature of ultrasonic extraction is 40 ℃, the frequency is 50KHz, the ultrasonic power is 100W, and the ultrasonic extraction time is 30min;
2) Filtering the liquid after ultrasonic extraction to obtain ultrasonic filtrate; standing the ultrasonic filtrate at 2 ℃ for 5 hours, and centrifuging to obtain a centrifugal filtrate, wherein the centrifugal speed is 500r/min, the centrifugal power is 100W, and the centrifugal time is 10min;
3) Concentrating the centrifugate under reduced pressure to relative density of 1.250 to obtain dry apple extract;
preparing apple aroma components:
1) Removing the skin of fresh Acess apple, putting into a cold press for cold pressing and filtering to obtain clear apple juice;
2) Performing molecular distillation on clear apple juice at a feed rate of 10g/min, a film scraping speed of 300r/min, a distillation temperature of 40 ℃ and a distillation pressure of 10Pa, and separating light components to obtain apple aroma components;
preparing apple extract for cigarettes:
adding apple aroma components into the dried apple extract, mixing and shaking uniformly to obtain an apple extract for cigarettes; wherein the mass ratio of the apple aroma components to the dried apple extract is 1:10.
Example 2
Preparing dried apple extract:
1) Adding ethanol solution into dried golden apple, and placing into an ultrasonic device for ultrasonic extraction; wherein the weight of the ethanol solution is 5 times of the dry weight of the apples, and the volume percentage concentration of the ethanol solution is 50%; the temperature of ultrasonic extraction is 50 ℃, the frequency is 80KHz, the ultrasonic power is 150W, and the ultrasonic extraction time is 40min;
2) Filtering the liquid after ultrasonic extraction to obtain ultrasonic filtrate; standing the ultrasonic filtrate at 5 ℃ for 8 hours, and centrifuging to obtain a centrifugal filtrate, wherein the centrifugal speed is 800r/min, the centrifugal power is 150W, and the centrifugal time is 20min;
3) Concentrating the centrifugate under reduced pressure to relative density of 1.300 to obtain dry apple extract;
preparing apple aroma components:
1) Removing the skin of fresh Acess apple, putting into a cold press for cold pressing and filtering to obtain clear apple juice;
2) Performing molecular distillation on clear apple juice at a feed rate of 15g/min, a film scraping speed of 400r/min, a distillation temperature of 50deg.C and a distillation pressure of 20Pa, and separating light components to obtain apple aroma components;
preparing apple extract for cigarettes:
adding apple aroma components into the dried apple extract, mixing and shaking uniformly to obtain an apple extract for cigarettes; wherein the mass ratio of the apple aroma components to the dried apple extract is 1:15.
Example 3
Preparing dried apple extract:
1) Adding ethanol solution into dried golden apple, and placing into an ultrasonic device for ultrasonic extraction; wherein the weight of the ethanol solution is 5 times of the dry weight of the apples, and the volume percentage concentration of the ethanol solution is 50%; the temperature of ultrasonic extraction is 60 ℃, the frequency is 100KHz, the ultrasonic power is 200W, and the ultrasonic extraction time is 60min;
2) Filtering the liquid after ultrasonic extraction to obtain ultrasonic filtrate; standing the ultrasonic filtrate at 5 ℃ for 10 hours, and centrifuging to obtain a centrifugal filtrate, wherein the centrifugal speed is 1000r/min, the centrifugal power is 200W, and the centrifugal time is 30min;
3) Concentrating the centrifugate under reduced pressure to relative density of 1.350 to obtain dry apple extract;
preparing apple aroma components:
1) Removing the skin of fresh Acess apple, putting into a cold press for cold pressing and filtering to obtain clear apple juice;
2) Performing molecular distillation on clear apple juice at a feed rate of 20g/min, a film scraping speed of 500r/min, a distillation temperature of 60 ℃ and a distillation pressure of 30Pa, and separating light components to obtain apple aroma components;
preparing apple extract for cigarettes:
adding apple aroma components into the dried apple extract, mixing and shaking uniformly to obtain an apple extract for cigarettes; wherein the mass ratio of the apple aroma components to the dried apple extract is 1:20.
Sensory comparison experiments were performed on the apple extracts for cigarettes prepared in examples 1-2 and conventional apple extracts (prepared by cold pressing in combination with reduced pressure concentration method)
Figure BDA0003739763800000061
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (8)

1. The preparation method of the apple extract for the cigarettes is characterized by comprising the following steps of:
adding ethanol solution into dried apples, performing ultrasonic extraction, and filtering to obtain ultrasonic filtrate; standing the ultrasonic filtrate at 2-8deg.C, centrifuging to obtain centrifugate, and concentrating under reduced pressure to obtain dried apple extract;
peeling fresh apples, cold pressing and filtering to obtain clear apple juice; molecular distillation is carried out on the clarified apple juice, and light components are collected to obtain apple aroma components; the distillation temperature is 40-60 ℃ and the distillation pressure is 10-30Pa;
adding apple aroma components into the dried apple extract, and uniformly mixing; when mixing, the mass ratio of the apple aroma components to the dried apple extract is 1 (10-20), and the apple extract for cigarettes is prepared;
the weight of the ethanol solution is 5-10 times of the weight of the dried apples, and the volume percentage concentration of the ethanol solution is 40-60%;
the ultrasonic extraction temperature is 40-60deg.C, frequency is 50-100KHz, ultrasonic power is 100-200W, and ultrasonic extraction time is 30-60min.
2. The method for preparing apple extract for cigarette according to claim 1, wherein the dried apple is mauveria bassiana;
the fresh apple is Acess apple.
3. The method for preparing apple extract for tobacco according to claim 1, wherein the ultrasonic filtrate is left for 5-10 hours.
4. The method of preparing apple extract for tobacco according to claim 1, wherein the ultrasonic filtrate is left to stand at 2-5 ℃.
5. The method for preparing apple extract for cigarettes according to claim 1, wherein the centrifugal speed is 500-1000r/min, the centrifugal power is 100-200W, and the centrifugal time is 10-30min.
6. The method for preparing apple extract for cigarettes according to claim 1, wherein the centrifugate is concentrated under reduced pressure to a relative density of 1.250-1.350, and the dry apple extract is obtained.
7. The method for preparing apple extract for cigarettes according to claim 1, wherein the molecular distillation is performed under the conditions that the feeding speed is 10-20g/min and the scraping speed is 300-500 r/min.
8. An apple extract for cigarettes, which is prepared by the preparation method of any one of claims 1 to 7.
CN202210809096.0A 2022-07-11 2022-07-11 Apple extract for cigarettes and preparation method thereof Active CN115067540B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210809096.0A CN115067540B (en) 2022-07-11 2022-07-11 Apple extract for cigarettes and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210809096.0A CN115067540B (en) 2022-07-11 2022-07-11 Apple extract for cigarettes and preparation method thereof

Publications (2)

Publication Number Publication Date
CN115067540A CN115067540A (en) 2022-09-20
CN115067540B true CN115067540B (en) 2023-06-23

Family

ID=83259150

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210809096.0A Active CN115067540B (en) 2022-07-11 2022-07-11 Apple extract for cigarettes and preparation method thereof

Country Status (1)

Country Link
CN (1) CN115067540B (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2826008A1 (en) * 2001-06-19 2002-12-20 Pernod Ricard Method of extracting polyphenols from apples or apple derivatives, useful as antioxidants and therapeutic agents in food, cosmetic and therapeutic compositions, utilizes an aqueous alcohol as extractant
KR20040018691A (en) * 2002-08-26 2004-03-04 임선 The preparation method of tabacco
JP2004089035A (en) * 2002-08-30 2004-03-25 Mitsukan Group Honsha:Kk Filtrate extracted from strained lees of apple, method for producing the filtrate, and application of the filtrate
KR20100095979A (en) * 2009-02-23 2010-09-01 한국식품연구원 Production method of apple juice and the juice composition produced thereby
WO2022064183A1 (en) * 2020-09-22 2022-03-31 Nicoventures Trading Limited Tobacco compositions and preparation thereof

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104082855B (en) * 2014-07-28 2015-10-21 嘉兴市得百科新材料科技有限公司 Electronic cigarette liquid of a kind of pair of apple local flavor and preparation method thereof
CN106954886A (en) * 2016-10-13 2017-07-18 武汉黄鹤楼香精香料有限公司 A kind of preparation method of cigarette apple extract
CN108851173A (en) * 2018-06-15 2018-11-23 广西中烟工业有限责任公司 A kind of cigarette preparation method of mango fragrance and the application in cigarette
CN113907394B (en) * 2021-09-28 2023-06-13 深圳市真味生物科技有限公司 Preparation method of apple extract for cigarettes

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2826008A1 (en) * 2001-06-19 2002-12-20 Pernod Ricard Method of extracting polyphenols from apples or apple derivatives, useful as antioxidants and therapeutic agents in food, cosmetic and therapeutic compositions, utilizes an aqueous alcohol as extractant
KR20040018691A (en) * 2002-08-26 2004-03-04 임선 The preparation method of tabacco
JP2004089035A (en) * 2002-08-30 2004-03-25 Mitsukan Group Honsha:Kk Filtrate extracted from strained lees of apple, method for producing the filtrate, and application of the filtrate
KR20100095979A (en) * 2009-02-23 2010-09-01 한국식품연구원 Production method of apple juice and the juice composition produced thereby
WO2022064183A1 (en) * 2020-09-22 2022-03-31 Nicoventures Trading Limited Tobacco compositions and preparation thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
分子蒸馏技术在烟用香料提取分离中的应用;高旭;陈鹏;洪林军;王立峰;杨君;;化学工程师(10);全文 *

Also Published As

Publication number Publication date
CN115067540A (en) 2022-09-20

Similar Documents

Publication Publication Date Title
CN103222513B (en) Method for preparing high-scent green tea
CN103190498B (en) Honeysuckle tea and processing method thereof
CN106551058B (en) Preparation method of mulberry leaf tea capable of reducing blood sugar
KR101563802B1 (en) Bellflower preserved in honey made by adding the magnolia tea and manufacturing method for the same
CN104560548A (en) Cherokee rose fruit wine and preparation method thereof
CN107047831A (en) A kind of processing method of green tea
CN115067540B (en) Apple extract for cigarettes and preparation method thereof
KR100966304B1 (en) Processing method of maturing red bellflower
CN104946451A (en) Plum wine and preparation method thereof
CN110122921B (en) Preparation method of black tea puffed beads
CN111575113A (en) Cigarette containing emblic leafflower fruit extract and application thereof
CN107136256A (en) Instant chrysanthemum green tea and preparation method thereof
CN113907394B (en) Preparation method of apple extract for cigarettes
CN104946452A (en) Loquat wine and preparation method thereof
CN115769882A (en) Roselle dried orange peel concentrated essence and preparation method thereof
CN111134204B (en) Method for making sour tea
KR101346567B1 (en) Mixed fermented liquid of green tea flowers and pomegranates and its manufacturing method
CN106307207A (en) Dried loquat fruits and making method thereof
CN113679087A (en) Cigarette spice and cigarette product
CN102907547B (en) Honey pomelo soft sweets and preparation method thereof
CN107259236B (en) Processing method for mint extraction dry powder and snow pear loquat syrup
CN106922854A (en) A kind of preparation method of high-quality slender joss stick amber black tea
CN110791387A (en) Maillard reactant of bamboo fungus for cigarettes as well as preparation method and application of Maillard reactant
CN110616108A (en) Low-temperature physical squeezing method for tea seed oil
CN110804497A (en) Preparation method of saffron extract for tobacco bead blasting

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
GR01 Patent grant
GR01 Patent grant