Click for new scientific resources and news about Corona[COVID-19]

Paper Information

Journal:   IRANIAN POLYMER JOURNAL (ENGLISH)   January-February 2003 , Volume 12 , Number 1; Page(s) 37 To 42.
 
Paper: 

BIOSYNTHESIS OF POLY - Β- HYDROXYBUTYRATE AS A BIODEGRADABLE POLYMER

 
 
Author(s):  TABANDEH F., VASHEGHANI FARAAHANI E.*
 
* DEPARTMENT OF CHEMICAL ENGINEERING, TARBIAT MODARRES UNIVERSITY,TEHRAN, I.R. IRAN
 
Abstract: 

Poly-β-hydroxybutyrate (PHB) is a biodegradable polymer which is regarded as a new environmentally compatible material. A wide variety of micro-organisms accumulate poly-β-hydroxybutyrate within cells as an intracellular storage material of carbon and energy. In this study, PHB was synthesized by Ralstonia eutropha (formerly Alcaligenes eutrophus) in a defined medium consisted of fructose as a sole carbon source. The effect of four process variables was studied to optimize the biosynthesis of PHB in bench scale. The results showed that the fresh inoculum at the mid-exponential phase lead to more growth during fermentation. The optimum shaking rate and temperature were 250 rpm and 25°C, respectively. The high concentration of fructose inhibited the growth, so it was optimized at 15 gL-1. Under these conditions, PHB was accumulated as inclusion bodies so that 70% of the dry cell weight of Ralstonia eutropha was composed of PHB. The yield coefficients of biomass and product were 0.3 and 0.21 g.g-1, respectively.

 
Keyword(s): POLY-Β-HYDROXYBUTYRATE (PHB), RALSTONIA EUTROPHA, BIOSYNTHESIS, BIODEGRADABLE POLYMERS
 
References: 
  • ندارد
 
  pdf-File tarjomyar Persian Abstract Yearly Visit 149
 
Latest on Blog
Enter SID Blog