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Table 6 Molecular weights of P(3HO-co-3H5DD) samples produced in batch cultivation

From: Medium chain length polyhydroxyalkanoates consisting primarily of unsaturated 3-hydroxy-5-cis-dodecanoate synthesized by newly isolated bacteria using crude glycerol

Sample

PHA composition (mol %)

Molecular weight

3HO

3H5DD

Mn

Mw

Mw/Mn

Acinetobacter sp. ASC1

1

99

4.7 × 104

8.8 × 104

1.9

Pseudomonas sp. ASC2

5

95

3.6 × 104

6.5 × 104

1.8

Enterobacter sp. ASC3

10

90

8.9 × 104

14.5 × 104

1.6

Bacillus sp. ASC4

0

100

6.6 × 104

14.1 × 104

2.2

  1. M n number average molecular weight, M w weight average molecular weight, M w /M n the polydispersity index, used as a measure of the broadness of a molecular weight distribution of a polymer. The larger the polydispersity index, the broader the molecular weight. Step polymerization reactions typically yield Mw/Mn values of around 2.0
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Microbial Cell Factories

ISSN: 1475-2859

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