Theme (1 – 4)
20 th Biological Science Graduate Congress (BSGC)
9 – 11 December 2015
Chulalongkorn University, Bangkok, Thailand
Registration form
Name of Participant
(as in IC or passport)
UM Matriculation number
PhD or Master
Email address
Mobile phone number
Supervisor(s)
Title of Abstract
1.
2.
3.

20 th Biological Science Graduate Congress (BSGC)
9 – 11 December 2015
Chulalongkorn University, Bangkok, Thailand
Registration form
Name of Participant
(as in IC or passport)
Mr. Wanthane Khetkorn
UM Matriculation number
PhD or Master PhD
Email address
Mobile phone number p_wanthane@hotmail.com
(+66)80 1234 567
Supervisor(s) 1. Prof. Dr. Am Incharoensakdi
2.
Title of Abstract
3.
Effect of several factors on hydrogen production by
N
2
-fixing cyanobacterium Anabaena siamensis TISTR
8012
2 Theme (1 – 4)
Remark
Theme 1: Biodiversity Ecology and Systematics
Theme 2: Applied Science and Biotechnology
Theme 3: Biochemistry and Physiology
Theme 4: Cell and Molecular Biology

Effect of several factors on hydrogen production by N
2
-fixing cyanobacterium Anabaena siamensis TISTR 8012
(Topic: Time New Roman 11 and Bold, please use the capital letter only the first word of sentence except the scientific name)
Khetkorn, W., Incharoensakdi, A.
Department of Biochemistry, Faculty of Science, Chulalongkorn University, Bngkok 10330, Thailand
E-mail: p_wanthane@hotmail.com
(Author: Author’s last name, followed by first initial
Address: Department, Faculty, University, City, Country, email
Time New Roman 10 and Bold, please underline the name and email of presenting author)
In nitrogen fixing cyanobacteria, there are three enzymes involved in the hydrogen metabolism.
Nitrogenase is an enzyme, which catalyzes the nitrogen fixation from atmospheric N
2
, to produce ammonia and concomitantly produce H
2
as by produce. The product H
2
is taken up to protons and electrons by an uptake hydrogenase usually found in all nitrogen fixing cyanobacteria. The last enzyme, reversible hydrogenase, catalyzes the H
2
uptake and H
2
evolution. This enzyme has also been found in all nonnitrogen fixing cyanobacteria and in some nitrogen fixing cyanobacteria. Anabaena siamensis was isolated from a rice paddy fields and shows high capacity to fix atmospheric N
2
with subsequent increase of the rice growth rate. This strain has high potential for hydrogen production. The efficiency of hydrogen production depends on several factors. Therefore, the objective of this research is to compare the growth and H
2 production performances of A. siamensis TISTR 8012 under different conditions. It was found that i)
Addition of external nitrogen sources inhibited hydrogen production in A. siamensis TISTR 8012, ii) cell age could affect hydrogen production rate, ii) the most preferred substrate for hydrogen production in
Anabaena siamensis TISTR 8012 was fructose and the environmental conditions such as pH, temperature and light intensity also influenced hydrogen production in A. siamensis TISTR 8012.
(Content: Time New Roman 10 and the abstract must not exceed 300 words.
No references, image, table diagram and graph)