Mayra González - Academia.edu (original) (raw)
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Centre of Polymer and Carbon Materials Polish Academy of Sciences
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Papers by Mayra González
Polymer Bulletin, 1996
The biosynthesis of poly (β-hydroxybutyrate) (PHB) byBacillus circulans was carried out through c... more The biosynthesis of poly (β-hydroxybutyrate) (PHB) byBacillus circulans was carried out through cultivation in nutrient broth in a single step. overlinetextMtextv\overline {\text{M}} {\text{v}}overlinetextMtextv of polymer fractions soluble in chloroform were close to 2 x 105. IR,1H and13C NMR spectra of the isolated PHB were in agreement with the assumed structure of this poly-β-hydroxyester. NMR spectroscopy pointed out a high percentage of isotactic polymer, while differential scanning calorimetry showed that the PHB was crystalline.
Polymer Bulletin, 1996
The biosynthesis of poly (β-hydroxybutyrate) (PHB) byBacillus circulans was carried out through c... more The biosynthesis of poly (β-hydroxybutyrate) (PHB) byBacillus circulans was carried out through cultivation in nutrient broth in a single step. overlinetextMtextv\overline {\text{M}} {\text{v}}overlinetextMtextv of polymer fractions soluble in chloroform were close to 2 x 105. IR,1H and13C NMR spectra of the isolated PHB were in agreement with the assumed structure of this poly-β-hydroxyester. NMR spectroscopy pointed out a high percentage of isotactic polymer, while differential scanning calorimetry showed that the PHB was crystalline.