By A. Yokota, T. Fujii, K. Goto
Alicyclobacillus aren't pathogenic micro organism, yet they're challenging, not just for shoppers but additionally for beverage manufacturers, simply because no potent keep an eye on equipment haven't begun been built. it really is in contrast historical past and in reputation of the significance and urgency of the matter that this publication brings jointly new insights at the subject including study released thus far. The ebook uniquely specializes in one genus of micro organism. It goals to convey the data of Alicyclobacillus jointly and supply valuable knowing to regulate the micro organism for nutrition industries.
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Extra resources for Alicyclobacillus: Thermophilic Acidophilic Bacilli
The colony morphology can differ slightly depending on the strain, but in general round colonies are formed (Fig. 3-3). Some older cultures may appear contaminated, due to their heterogeneous morphology. The colonies range in color from white to beige, becoming slightly darker with age. Their sheen is not quite glossy. 5-1 mm because of low oxygen concentration. A. pomorum Alicyclobacillus genomic species 1 A. acidocaldarius A. acidoterrestris Fig. 3-3. Morphological characteristics of 4 Alicyclobacillus species All strain were grown on YSG agar.
0 Growth pH Optimum pH range Chapter 3: Characteristics of Alicyclobacillus Table 3-3. d. d. d. d. Glycogen + + + + + + + + Xylitol ǃ-Gentiobiose + + w + + D-Turanose + + + + + + + D-Lyxose + D-Tagatose + + + + + D-Fucose 5-Keto-gluconate + + + T Strain 1, A. pomorum 3A ; 2, A. acidocaldarius subsp. acidocaldarius ATCC T 27009 ; 3, Alicyclobacillus genomic species 1 DSM 11984; T4, Alicyclobacillus genomic species 2 MIH332; 5, A. acidoterrestris ATCC 49025 ; 6, A. hesperidum DSM 12489T; 7, A.
In 1992, Wisotzkey and co-workers reported that B. acidocaldarius, B. acidoterrestris and B. cycloheptanicus should be reclassified from Bacillus to a new genus, Alicyclobacillus, according to these three species possess the unique Ȧ-alicyclic fatty acids and form one cluster based on the phylogenetic analysis of 16S rRNA gene (16S rDNA) sequence 2). For some time after, Alicyclobacillus was represented by these three species. Recently though, Alicyclobacillus species have been identified as the cause of off odors associated with the spoilage of acidic beverages, and reported not only in Japan 7-16), but also in other parts of the world.
Alicyclobacillus: Thermophilic Acidophilic Bacilli by A. Yokota, T. Fujii, K. Goto