Keywords
PHA
degradable polymers
animal fats
fatty acids
How to Cite
Abstract
Fats of different animal origin were studied as the only carbon substrate for PGA synthesis by the natural strain Cupriavidus necator B-10646. The studied fatty substrates differed in qualitative and quantitative fatty acid composition and were represented from 7 to 23 fatty acids with palmitic, stearic and oleic acids dominating and saturation ratios of 0.2-1.7. All investigated C-substrates supported the producer growth and PGA synthesis: bacterial biomass concentration and intracellular polymer content were 1.5-6.5 g/L and 51-70%, respectively. The synthesized PGAs were three-component copolymers with a predominance of 3-hydroxybutyrate monomers (94.9-96.6 mol%) and minor inclusions of 3-hydroxyvalerate (3.0-4.6 mol%) and 3-hydroxyhexanoate (0.4-0.6 mol%).
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