BIOSYNTHESIS AND CHARACTERIZATION OF POLY(BETA-HYDROXYBUTYRATE) PRODUCED BY BACILLUS-CIRCULANS

Authors
ROZSA C GONZALEZ M GALEGO N ORTIZ P MARTINEZ J MARTINEZ R GOMEZ MR
Citation
C. Rozsa et al., BIOSYNTHESIS AND CHARACTERIZATION OF POLY(BETA-HYDROXYBUTYRATE) PRODUCED BY BACILLUS-CIRCULANS, Polymer bulletin, 37(4), 1996, pp. 429-435
Citations number
9
Categorie Soggetti
Polymer Sciences
Journal title
Polymer bulletin → ACNP
ISSN journal
01700839
Volume
37
Issue
4
Year of publication
1996
Pages
429 - 435
Database
ISI
SICI code
0170-0839(1996)37:4<429:BACOPP>2.0.ZU;2-6
Abstract
The biosynthesis of poly (beta-hydroxybutyrate) (PHB) by Bacillus circ ulans was carried out through cultivation in nutrient broth in a singl e step. <(M)over bar v> of polymer fractions soluble in chloroform wer e close to 2 x 10(5). IR, H-1 and C-13 NMR spectra of the isolated PHB were in agreement with the assumed structure of this poly-beta-hydrox yester. NMR spectroscopy pointed out a high percentage of isotactic po lymer, while differential scanning calorimetry showed that the PHB was crystalline.