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Chapter 11 Media for the detection and enumeration ofAlicyclobacillus acidoterrestrisandAlicyclobacillus acidocaldariusin foods

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Identifiers
DOI: 10.1016/s0079-6352(03)80014-0
Disciplines
  • Chemistry
  • Medicine

Abstract

Of the four known species of the genus Alicyclobacillus only Alicyclobacillus acidoterrestris is of significance for the beverage industry. Alicyclobacillus acidoterrrestris is a Gram-positive, obligately aerobic rod-shaped bacterium which is able to multiply event at pH 2.2. The heat resistance of the spores is extremly high (D95°C 1.0–14.5 min, z-value=6.4–11.3°C). Alicyclobacillus acidoterrestris can be detected using various methods, including flow cytometry, PCR, detection of fatty acids, ribotyping and cultural methods with biochemical identification. For routine analysis a cultural method is recommended because it is more reliable and simple.

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