HYDROXYBUTYRATE COPOLYMER;
MICROBIAL SYNTHESIS;
NUCLEAR MAGNETIC RESONANCE;
D O I:
10.1016/0032-3861(93)90719-Q
中图分类号:
O63 [高分子化学(高聚物)];
学科分类号:
070305 ;
080501 ;
081704 ;
摘要:
Copolymers of 3-hydroxybutyrate (3HB) and 3-hydroxypropionate (3HP) were synthesized in Alcaligenes latus from mixed carbon substrates of sucrose and 3-hydroxypropionic acid. The composition of copolyesters varied from 0 to 26 mol% 3HP, depending on the fraction of carbon substrates. The microbial copolyester was characterized by H-1 and C-13 nuclear magnetic resonance (n.m.r.) spectroscopy, gel permeation chromatography and differential scanning calorimetry. The copolymers were shown to have a random sequence distribution of 3HB and 3HP units by analysis of the 125 MHz C-13 n.m.r. spectra. The biosynthetic pathway of copolymers has been discussed.
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页码:4782 / 4786
页数:5
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[21]
Steinb├a┬╝chel A., 1991, BIOMATERIALS NOVEL M, P123, DOI DOI 10.1007/978-1-349-11167-1_3