Kyushu University Academic Staff Educational and Research Activities Database
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KENJI SAKAI Last modified date:2019.06.14

Professor / Division of Systems Bioengineering
Department of Bioscience and Biotechnology
Faculty of Agriculture


Graduate School
Undergraduate School
Other Organization
Administration Post
Other


E-Mail
Homepage
http://www.agr.kyushu-u.ac.jp/lab/dobi/1000en.top-framepage.html
Home Page for Laboratory of Soil and Environmental Microbiology .
Phone
092-802-4738
Fax
092-802-4738
Academic Degree
Dr. of Agriculture
Country of degree conferring institution (Overseas)
No
Field of Specialization
Applied Microbiology
ORCID(Open Researcher and Contributor ID)
0000-0002-2483-8823
Total Priod of education and research career in the foreign country
01years03months
Outline Activities
Basic studies on environmental microbiology and their application to conversion of waste biomass, sustainable production system, and environmental protection.
Research
Research Interests
  • Ecology and Functions of Bacteria Found on Human Scalp Hair
    keyword : Human scalp hair, Bacterial community structure
    2016.04~2021.03.
  • Ecology and Application of Thermophilic Microorganisms
    keyword : extremely thermophile, thermophilic lactic acid-producing bacteria, composting
    1990.04~2020.04.
  • Improvement of Wastewater treatment in Chemical Industry
    keyword : Pyrrosequence, Calcitrant cheicals
    2010.04.
  • Microbiology in treatment of waste material and waste water
    keyword : biological nitrogen removal, biofertilizer
    1981.04.
  • Studies on thermophilic microorganisms for producing functional compost from organic waste materials
    keyword : composting, thermophilic microorganism organic waste materials
    1992.01~2019.01.
  • Molecular microbiological analysis of mixed culture system
    keyword : mixed culture system, molecular microbiological analysis
    1994.08~2012.04.
  • Molecular analysis of intestinal microorganisms in soil earthwarm
    keyword : earthwarm, intestinal microorganisms
    2006.10~2008.05.
  • Studies on prebiotics and probiotics
    keyword : probiotics, prebiothics
    1983.04~2010.04.
  • Glycosidases of Bifidobacteria
    keyword : glycosidase,
    1982.04~2006.09.
Current and Past Project
  • New CORE TO CORE PROGRAM A. Advanced Research Networks on Establishment of an international research core for new bio-research fields with microbes from tropical areas
  • Creation of Green Innovative Industry from Oil Palm Plantation for the Bornean Bio-diversity Conservation
Academic Activities
Works, Software and Database
1. .
Presentations
1. KENJI SAKAI, Studies on Bacterial Community Toward Sustainable Palm Oil Industry Coexisting With Environmental and Biodiversity Conservation
, Asian Federation of Biotechnology, Malaysian Chapter, 2018.08, Complex microbial communities exists in environment such as natural forest, plantation forest, river and wastewater drainage, intestinal tracts of animals and palm rhizosphere. Also, microbial transforming processes of organic waste are generally operated with specific mixed culture system. Recent development of next generation DNA sequencing gave us a strong tool for analyzing these complex structures. After knowing structure and functions of microorganisms in these biotransformation system, we could estimate functions of the communities and improve them. Tracing specific bacteria in waste materials, animals and plant rhizosphere, with general structures in soil and river water, would provide us useful information to know impact of palm oil industry and to understand biodiversity of microorganism, fauna and flora.
The author joined SATREPS Project aiming Promotion of Green Economy with Palm Oil Industry for Biodiversity Conservation, and has been collaborated with members in UPM and UMS, Malaysia. Within ecosystems in Borneo island, a dynamic assemblage of soil, water, plants and animals which are delicately inter-connected. In this lecture, I would like to introduce three research topics our team involved: (1) Accelerating recycle of biomass waste through enhanced mixed microbial conversion process. (2) Monitoring of bacterial community in river water as an indicator for waste water discharge. (3) Investigation of biodiversity of animals and insects, with bacterial diversity in animal feces, forest soil and river water..
2. KENJI SAKAI, Microbiological Research Toward Sustainable Palm Oil Industry
Coexisting With Environmental and Biodiversity Conservation
, THE MALAYSIAN SOCIETY FOR MICROBIOLOGY, 2017.12, Microbial transforming process of organic waste are generally operated with specific mixed culture systems. Also, complex microbial communities existed in environment such as natural forest, plantation forest, river and wastewater drainage, intestinal tracts of animals and palm rhizosphere. Recent development of next generation DNA sequencer gave us a strong tool for analyzing structure of these complex microbial community. After knowing structure and functions of microorganisms in a mixed microbial biotransformation system, we could improve and control the system. If we could trace specific bacteria in the waste materials animals and plant rhizosphere, with general structures in soil and river water, they would provide useful information to know impact of palm oil industry to surrounding environment and to understand biodiversity in soil, fauna and flora.
We, Kyushu University joined SATREPS Project aiming Promotion of Green Economy with Palm Oil Industry for Biodiversity Conservation, and have been collaborated with KIT, Japan, UPM and UMS, Malaysia. Within ecosystems in Sabah, Malaysia, a dynamic assemblage of soil, water, plants and animals which are delicately inter-connected. In this lecture, I would like to introduce three microbial research topics our team involved in the project. (1) Acceleration of the total waste recycling using enhanced mixed microbial conversion process. (2) Monitoring of bacterial community in surrounding river water as an indicator for waste water discharge. (3) Investigation of biodiversity of animals (dung beetle) and bacterial diversity of mammal feces, soil and river water in primary, secondary, and palm oil forest..
3. KENJI SAKAI, Exploring Microbial Community Which Is Useful for Transformation of Biomass Waste, International Symposium for Biotechnology Advances, 2013.12.
Awards
  • Studies on highly functional fermented-products made from
    un-utilized biomass resources by thermophilic bacteria
  • High acetone–butanol–ethanol production in pH-stat co-feeding of acetate and glucose
  • Fed-batch fermentation for enhanced lactic acid production from glucose/xylose mixture without carbon catabolite repression
  • Efficient butanol production without carbon catabolite repression from mixed sugars with Clostridium saccharoperbutylacetonicum N1-4
  • Novel high butanol production from lactic acid and pentose by Clostridium saccharoperbutylacetonicum
Educational
Educational Activities
Applied and environmental microbiology
Other Educational Activities
  • 2018.10.
Social
Professional and Outreach Activities
A member of Asian Core Programs between Japan and Thai, and Japan Malaysia, Supported by JSPS
Join SATREPS Program (with Malaysia)
Join Kusanone Program of JICA (Indonesia).