Research Article
Microbes Associated with Freshly Prepared Juices of Citrus and Carrots
Table 3
Biochemical characteristics of bacterial isolates of juices.
| |
Bacterial isolates |
Catalase |
Oxidase |
Starch hydrolysis | IMViC test | Sugar fermentation | | Indole | Methyl red | Voges-Proskauer | Citrate | Glucose | Lactose | Mannitol | Sucrose |
| | Bacillus subtilis | + | − | + | − | − | + | + | A | − | A | A | | B. cereus | + | − | + | − | − | + | + | A | − | A | − | | Escherichia coli | + | − | − | + | + | − | − | A + G | A + G | − | − | | Serratia | + | − | − | − | − | − | + | A | − | + | − | | Leuconostoc | − | − | − | − | − | + | + | A | − | A | − | | Micrococcus | + | + | − | + | + | − | − | A | A | − | − | | Staphylococcus aureus | + | − | − | + | + | − | − | A | A | A | A | | Lactobacillus | − | − | − | − | − | − | − | A + G | A | − | − | | Acetobacter | − | − | − | − | − | + | + | A | − | − | − |
|
|
+: positive; −: negative; A: acid; A + G: acid + gas.
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