Search Symbol (Half-width) Description of Search Symbols
Space "AND" indicates the intertwining of key terms used in a search
Double Quotation Marks ("") ( " " ) Double quotation marks indicate the beginning and end of a phrase, and the search will only include terms that appear in the same order of those within the quotations. Example: "image process" : " image process "
? Indicates a variable letter. Entering two ? will indicate two variable letters, and so on. Example: "Appl?", search results will yield apple, apply… e , appl y … ( (often used to English word searches) )
* Indicates an unlimited number of variable letters to follow, from 1~n. Example: Enter "appl*", search results will yield apple, apples, apply, applied, application…(often used in English word searches) e , appl es , appl y , appl ied , appl ication … ( (often used to English word searches) )

Boolean logic combinations of key words is a skill used to expand or refine search parameters.
(1) AND (1) AND: Refines search parameters
(2) OR (2) OR: Expands search parameters (3) NOT: Excludes irrelevant parameters


DOI stands for Digital Object Identifier ( D igital O bject I dentifier ) ,
and is the unique identifier for objects on the internet. It can be used to create persistent link and to cite articles.

Using DOI as a persistent link

To create a persistent link, add「http://dx.doi.org/」 「 http://dx.doi.org/ 」 before a DOI.
For instance, if the DOI of an article is 10.5297/ser.1201.002 , you can link persistently to the article by entering the following link in your browser: http://dx.doi.org/ 10.5297/ser.1201.002
The DOI link will always direct you to the most updated article page no matter how the publisher changes the document's position, avoiding errors when engaging in important research.

Cite a document with DOI

When citing references, you should also cite the DOI if the article has one. If your citation guideline does not include DOIs, you may cite the DOI link.

DOIs allow accurate citations, improve academic contents connections, and allow users to gain better experience across different platforms. Currently, there are more than 70 million DOIs registered for academic contents. If you want to understand more about DOI, please visit airiti DOI Registrationdoi.airiti.com ) 。

Abstract 〈TOP〉
Parallel Abstract 〈TOP〉
Reference ( 25 ) 〈TOP〉
  1. [5]Sumi, H., H. Hamada, H. Mihara and H.Muraki. 1987. A novel fibrinolytic enzyme in the vegetable cheese Natto ;a typical and popular soybean in the Japanese diet. Experientia. 43:1110-1111.
  2. [6]Sumi, H., H. Hamada, K. Nakanishi, Hajime Hiratani. 1990. Enhancement of the fibrinolytic Activity in Plasma by Oral Administration of Natto Kinase. Acta Haematol. 84:139-143.
  3. [7]Fujita, M., K. Nomura, K. Hong, T. Ito, A. Asada and S. Nishimuro. 1993. Purification and Characterization of a strong fibrinolytic enzyme (NATTOKINASE) in the vegetable cheese natto, A popular soybean fermented food in Japan. Biochemical and Biophysical research communication.197(3):1340-1347.
  4. [9]Fukutake, M. , M. Takahashi , K. Ishida ,H. Kawamura , T. Sugimura and K. Makabayashi. 1996. Quantification of Genistein and Genistin in Soybeans and Soybean Products , Food and Chemical Toxicology. 34:457-461.
  5. [10]Yamaguchi , M., H. Taguchi, Y. Gao, A. Igarashi and Y. Tsukamoto. 1999. Effect of vitamin K2 (menaquinone-7) in fermented soybean (Natto) on bone loss in ovariectomized rats. Joumal of Bone and Mineral Metabolism. 17:23-29.
Times Cited (4) 〈TOP〉
  1. 吳佳璇(2008)。發酵溫度影響Bacillus subtilis BCRC 14715發酵黑豆中機能性成分之改變。臺灣大學食品科技研究所學位論文。2008。1-80。 
  2. 范瓊藝(2006)。利用饋料醱酵生產納豆激酶之研究。大同大學生物工程學系所學位論文。2006。1-70。
  3. 彭一凡(2007)。探討照光強度對納豆菌生長與納豆激酶生產之影響。中央大學化學工程與材料工程學系學位論文。2007。1-77。
  4. 郭洲獎(2011)。利用芽孢桿菌醱酵生產納豆激酶與環狀糊精葡萄糖苷轉移酶之研究。大同大學生物工程學系所學位論文。2011。1-121。
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