Fig. 4From: Flocculation characteristics of a bioflocculant produced by the actinomycete Streptomyces sp. hsn06 on microalgae biomassFourier transform-infrared spectrograms (a) and flocculation activity (b) of the bioflocculant before and after dialysis. All error bars indicate the SE of the three biological replicates. **represents a statistically significant difference of p < 0.01 compared with positive controlBack to article page