TY - JOUR
T1 - Selective enumeration of Lactobacillus acidophilus, Bifidobacterium spp., starter lactic acid bacteria and non-starter lactic acid bacteria from Cheddar cheese
AU - Darukaradhya, Jyothsna
AU - Phillips, Michael
AU - Kailasapathy, Kasipathy
PY - 2006
Y1 - 2006
N2 - Twelve media were evaluated for selective and/or differential enumeration of Lactobacillus. acidophilus, Bifidobacterium spp., starter lactic acid bacteria (SLAB) and non-starter lactic acid bacteria (NSLAB) from Cheddar cheese. All media showed variation in counts and selectivity. Some reported selective media failed to inhibit SLAB and NSLAB. The media that were selective and/or differential and also gave better recovery were Reinforced Clostridium Agar with bromocresol green and clindamycin (RCABC), which was selective for L. acidophilus spp. and Reinforced Clostridium Agar with aniline blue and dicloxacillin (RCAAD), which was differential for Bifidobacterium spp. and SLAB. Reinforced Clostridium Agar with bromocresol green and vancomycin (RCABV) was found suitable for NSLAB. Apart from pure cultures, these media were also tested with commercial Cheddar cheese containing L. acidophilus. Additionally, Cheddar cheese containing L. acidophilus and B. lactis was manufactured and the selected media were used to monitor the initial survival of probiotic bacteria, SLAB and NSLAB present.
AB - Twelve media were evaluated for selective and/or differential enumeration of Lactobacillus. acidophilus, Bifidobacterium spp., starter lactic acid bacteria (SLAB) and non-starter lactic acid bacteria (NSLAB) from Cheddar cheese. All media showed variation in counts and selectivity. Some reported selective media failed to inhibit SLAB and NSLAB. The media that were selective and/or differential and also gave better recovery were Reinforced Clostridium Agar with bromocresol green and clindamycin (RCABC), which was selective for L. acidophilus spp. and Reinforced Clostridium Agar with aniline blue and dicloxacillin (RCAAD), which was differential for Bifidobacterium spp. and SLAB. Reinforced Clostridium Agar with bromocresol green and vancomycin (RCABV) was found suitable for NSLAB. Apart from pure cultures, these media were also tested with commercial Cheddar cheese containing L. acidophilus. Additionally, Cheddar cheese containing L. acidophilus and B. lactis was manufactured and the selected media were used to monitor the initial survival of probiotic bacteria, SLAB and NSLAB present.
KW - Cheddar cheese
KW - differential media
KW - non-starter lactic acid bacteria (NSLAB)
KW - probiotic cheddar cheese
KW - selective media
KW - starter lactic acid bacteria (SLAB)
UR - http://handle.uws.edu.au:8081/1959.7/40863
M3 - Article
SN - 0958-6946
JO - International Dairy Journal
JF - International Dairy Journal
ER -