ISSN:
1436-2449
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
Summary Bacterially synthesized Poly (β-hydroxybutyrate-co-β-hydroxyvalerate), P(HB-co-HV), with different compositions were analyzed by NMR spectroscopy and HPLC-mass spectrometry. Partial methanolysis or partial ammonolysis of P(HB-co-HV) has been performed, the oligomers obtained were separated by high-performance liquid chromatography (HPLC) and identified by fast atom bombardment mass spectrometry, (FAB-MS). The normalized intensities of oligomer peaks provided an estimate of the copolymer composition and of the sequence distribution of monomeric units. The interpretation of the data indicated that the sequence distributions of all samples were statistically random (Bernoullian model), and permited the detection in one sample, of traces of pure poly(β-hydroxybutyrate), (PHB).
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01032681
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