@article{mbs:/content/journal/micro/10.1099/00221287-63-3-303, author = "Grecz, N. and Tang, T.", title = "Relation of Dipicolinic Acid to Heat Resistance of Bacterial Spores", journal= "Microbiology", year = "1970", volume = "63", number = "3", pages = "303-310", doi = "https://doi.org/10.1099/00221287-63-3-303", url = "https://www.microbiologyresearch.org/content/journal/micro/10.1099/00221287-63-3-303", publisher = "Microbiology Society", issn = "1465-2080", type = "Journal Article", abstract = "SUMMARY: Spores of five strains of Clostridium botulinum differing widely in their heat resistance contained 7·4 to 13·4 % dipicolinic acid. There appeared to be no correlation between DPA content and heat resistance of the various strains. The rate of loss of DPA during heating at 75 and 100° was consistently slower than the rate of loss of spore viability, though, in general, heat-resistant strains lost DPA less quickly than did heat-sensitive strains. At the instant of thermal death, spores still retained 28 to 99·6 % of their original DPA, though this DPA could be released on continued heating.", }