Effect of C:N molar ratio on monomer composition of polyhydroxyalkanoates produced by Pseudomonas mendocina 0806 and Pseudomonas pseudoalkaligenus YS1.
Polyhydroxyalkanoates (PHAs) are biodegradable polymers produced by bacteria. In this study, the effect of C:N molar ratio on the monomer composition of PHAs was investigated, including medium chain length PHA produced by Pseudomonas mendocina 0806 and PHA blends consisting of monomers of 3-hydroxybutyrate and medium chain length hydroxyalkanoate produced by Pseudomonas pseudoalkaligenus YS1. It was observed that there were some fixed ranges of C:N molar ratio that affect the monomer composition of PHA independently of the substrate. For strain 0806, the ranges were C:N < 20, 20 < C:N < 200, and C:N > 200. The monomer composition was constant among these ranges when using glucose and octanoate as the sole substrate. For strain YS1, the ranges were C:N < 20, 20 < C:N < 45, and C:N > 45. These results are useful for controlling monomer composition in PHA production.
Hong
K
K
Engineering School, South China University of Tropical Agriculture, Danzhou, Hainan, China.
Chen
G Q
GQ
Yu
P H
PH
Zhang
G
G
Liu
Y
Y
Chua
H
H
D020155:3-Hydroxybutyric Acid; D002244:Carbon; D002681:China; D003470:Culture Media; D005648:Fuel Oils; D009584:Nitrogen; D011091:Polyesters / Q000737:chemistry*; D011549:Pseudomonas / Q000302:isolation & purification / Q000502:physiology*; D013045:Species Specificity; D014871:Water Microbiology; D014874:Water Pollutants, Chemical
D003470:Culture Media; D005648:Fuel Oils; D011091:Polyesters; D014874:Water Pollutants, Chemical; D002244:Carbon; D009584:Nitrogen; D020155:3-Hydroxybutyric Acid