Fermentative Polyhydroxybutyrate Production from a Novel Feedstock Derived from Bakery Waste

Table 3

Yield of glucose (𝑌_Glc), fructose (𝑌_Frc), and free amino nitrogen (𝑌_FAN) obtained by different hydrolytic treatments of bakery waste.

Treatment	Seawater	Enzyme-to-solid ratio; [U g^−1]	𝑌Glc; [g g^−1]	𝑌Frc; [g g^−1]	𝑌FAN; [mg g^−1]
Multienzyme solution	No	6.9	0.23	0.02	0.29
		13.1	0.29	0.04	0.41
Commercial glucoamylase	No	6.9	0.32	0.03	0.22
		13.1	0.39	0.04	0.26
Commercial glucoamylase	Yes	1.0	0.28	0.09	0.36
Control	No	—	0.01	0.01	0.19