Fig. 5From: Rapid and simple detection of endospore counts in probiotic Bacillus cultures using dipicolinic acid (DPA) as a markerEffect of different treatments on the release of DPA from endospores of B. subtilis MA139 and B. licheniformis BL20386. The value of fluorescence intensity is based the 30-fold dilution of the spore suspensions with OD600nm = 1.0Back to article page