TABLE 1.

Positive reactions in rapid trehalase tests with 482 yeast isolates

SpeciesNo. of isolatesNo. (%) of positive reactions obtained with yeast colonies grown on the following agars:
SAB bioaCandida IDCandiSelect
C. glabrata 227223 (98.2)225 (99.1)225 (99.1)
Non-C. glabrata
    C. tropicalis6643b9
    C. parapsilosis71301
    Candida guilliermondii18201
    Candida famata15001
    Candida lusitaniae15100
    Otherc70000
25510 (3.9)3 (1.2)12 (4.7)
  • a SAB bio, Sabouraud bioMérieux agar.

  • b Only 13 isolates forming white colonies on Candida ID medium were tested since pink or blue colonies on this medium could not be regarded as possible isolates of C. glabrata.

  • c C. krusei (n = 23), C. albicans (n = 10), Candida inconspicua (n = 7), Candida kefyr (n = 7), Candida sphaerica (n = 5), Saccharomyces cerevisiae (n = 5), Candida norvegensis (n = 3), Candida lipolytica (n = 2), Candida pelliculosa (n = 2), Candida utilis (n = 2), Candida catenulata (n = 1), C. dubliniensis (n = 1), Candida rugosa (n = 1), C. neoformans (n = 1).