Research School for Socio-Economic and
Natural Sciences of the Environment
Research School for Socio-Economic and
Natural Sciences of the Environment
Agenda

Susakul Palakawong Na Ayudthaya

Date: 07 September 2018
Time: 11:00 - 13:30
Location: Aula, building 362, Gen. Foulkesweg 1, Wageningen

Dissertation title: 

Organic acid production from starch-y waste by gut derived microorganisms

Group: Wageningen University, Microbiology
Promotor: Prof.dr.ir. A.J.M. Stams and prof.dr. W.M. de Vos
Co-promotor: Dr. C.M. Plugge

Extra information:

Abstract:

There is a worldwide increasing energy demand while fossil resources are getting depleted. Using organic waste to produce valuable and renewable products such as organic acids including lactate and succinate is a promising strategy. In this study, starch waste was selected as the main substrate as it is abundant in many places and has low-value. Gut microorganisms from cow rumen fluids and guinea pig fecal samples were used as inocula to catalyze organic acid production. Microbial diversity involved in organic acid production was investigated. Succinate yields were as high as 4.52 mmol SA/ gram Starch. Starch waste and rumen fluid are suitable for lactate and succinate production. In addition, three novel organic acid producing bacteria were obtained and some may have potential for future applications.





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