Fermentative Polyhydroxybutyrate Production from a Novel Feedstock Derived from Bakery Waste

Figure 2

Change in glucose and FAN concentrations in hydrolysate during bakery waste hydrolysis using a crude enzyme extract from Aspergillus awamori solid mashes ((a) and (b)), Aspergillus awamori solid mashes directly added ((c) and (d)), commercial glucoamylase ((e) and (f)), and in a control ((g) and (h)), respectively. Hydrolyses carried out using crude enzyme extract and commercial glucoamylase were performed at enzyme-to-solid ratios of 6.9 and 13.1 U g⁻¹.

(a)

(b)

(c)

(d)

(e)

(f)

(g)

(h)