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Figure 5 | AMB Express

Figure 5

From: Feasibility study of an alkaline-based chemical treatment for the purification of polyhydroxybutyrate produced by a mixed enriched culture

Figure 5

IR spectra of PHB-containing biomass treated with different chemicals. (a) Chemical treatment with fresh biomass. Freeze dried biomass, brown dash dot line; 0.2 M NH4OH treatment, black dash double dots line; 0.2 M NaOH treatment, green dot line; 0.2 M NaOH and 0.25 w/v% SDS treatment, blue dash line; Commercial PHB, red line. (b) Chemical treatment with freeze dried biomass. Freeze dried biomass, brown dash dot line; 0.2 M NH4OH treatment, black dot line; 0.2 M NaOH treatment, green dash line; Commercial PHB, red line. All of the treatments were conducted at 30°C for 1 hour. The absorbance intensity was normalized by the intensity of absorbance at 1720 cm−1.

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