Fig. 4

Biodegradation activity ofBacillussp. JY14 after lyophilization. (a) Polyhydroxybutyrate (PHB) degradation yield was confirmed after lyophilization in the presence of protective reagents. Among the various sugars, raffinose exhibited the highest degradation yield (88.4%). (b) A concentration of 7% raffinose produced the highest degradation yield (92.1%); this concentration was selected as the optimal concentration for further experiments. Data shown are the means and standard deviataions of duplicate experiments