Rhodococcus ruber synthesized a copolyester of 3-hydroxybutyrate,
3-hydroxyvalerate, 3-hydroxyhexanoate and
4-hydroxyhexanoate from hexanoate. 173 Two strains of
Aeromonas sp. accumulated poly(3-hydroxybutyrate-co-3-
hydroxyhexanoate) when grown on fatty acids of more than
12 carbon atoms