Abstract：
:The anaerobic degradation of the polyesters poly-3-hydroxybutyrate (PHB) and poly-3-hydroxybutyrate-co-3-hydroxyvalerate (PHBV) was investigated with special regard to intermediate products, kinetics, and yields. During the degradation of PHBV acetate, propionate, n-butyrate, and n-valerate were detected. Additionally, 3-hydroxybutyrate and 3-hydroxyvalerate and four dimeric esters of these two molecules were identified by GC-MS measurements. Three different test systems for the anaerobic degradation of polyesters were studied. It was not possible to get reproducible results by means of the Anaerobic Sturm-test, a simple system based on carbon dioxide measurement. Secondly, a system based on the GC measurement of accumulated organic acids was investigated. A degradation of 90% in two days was calculated by a carbon balance. Best results were reached with the third test system based on the measurement of methane with a gas meter. A degradation of 99% was observed within 30 days.
journal_name
Biodegradationjournal_title
Biodegradationauthors
Reischwitz A,Stoppok E,Buchholz Kdoi
10.1023/a:1008203525476subject
Has Abstractpub_date
1997-01-01 00:00:00pages
313-9issue
5eissn
0923-9820issn
1572-9729journal_volume
8pub_type
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