Kareish cheese was made from skim buffaloes’ milk. The effect of the way used in milk
coagulation on the microstructural (monitored using scanning electron microscopy) and textural
(measured by Emperor Lite) properties, as well as chemical, bacteriological and sensory characteristics
of the resultant fresh Kareish cheese was studied. Four treatments of Kareish cheese were
made by applying coagulation starters of CH-1 (containing of Lactobacillus delbrueckii ssp.
bulgaricus and Streptococcus thermophilus) (T1) and ABT-1 (containing of Lb. acidophilus, Str.
thermophilus and bifidobacteria) (T2), in addition to use the previous starters with rennet (T3
and T4, respectively) during the cheese-making. Significant differences (p 6 0.05) between cheese
treatments affected by the type of starter and way used in milk coagulation were observed. Kareish
cheese made with starter and rennet (T3) and (T4) was characterised by low contents of fat in dry
matter, total protein, ash and pH values, as well as low counts of bacterial starter cells, but high
contents of moisture and salt in water phase; as compared with cheeses with starter only (T1 and
T2). Also, starter cells of Str. thermophilus were prevalent in all cheese treatments, followed by cells
of Lb. delbrueckii ssp. bulgaricus (T1 and T3), Lb. acidophilus and bifidobacteria (T2 and T4),
respectively. The textural characteristics were revealed that the hardness and gumminess negatively
correlated to cohesiveness and springiness. Kareish cheese made with starter and rennet (T3 and T4)
had the lowest hardness, gumminess and chewiness values, but the highest values of cohesiveness
and springiness. Micrographs were shown contained (T1) and (T2) cheeses on cluster bacterial starter
cells. Also, protein aggregates and voids were observed in micrographs of (T3) and (T4) cheeses
made with rennet and different starter strains (not shown). Sensory evaluation showed that Kareish
cheeses made with different starters and rennet were more accepted by the panellists than with
starters only.
Kareish cheese was made from skim buffaloes’ milk. The effect of the way used in milk
coagulation on the microstructural (monitored using scanning electron microscopy) and textural
(measured by Emperor Lite) properties, as well as chemical, bacteriological and sensory characteristics
of the resultant fresh Kareish cheese was studied. Four treatments of Kareish cheese were
made by applying coagulation starters of CH-1 (containing of Lactobacillus delbrueckii ssp.
bulgaricus and Streptococcus thermophilus) (T1) and ABT-1 (containing of Lb. acidophilus, Str.
thermophilus and bifidobacteria) (T2), in addition to use the previous starters with rennet (T3
and T4, respectively) during the cheese-making. Significant differences (p 6 0.05) between cheese
treatments affected by the type of starter and way used in milk coagulation were observed. Kareish
cheese made with starter and rennet (T3) and (T4) was characterised by low contents of fat in dry
matter, total protein, ash and pH values, as well as low counts of bacterial starter cells, but high
contents of moisture and salt in water phase; as compared with cheeses with starter only (T1 and
T2). Also, starter cells of Str. thermophilus were prevalent in all cheese treatments, followed by cells
of Lb. delbrueckii ssp. bulgaricus (T1 and T3), Lb. acidophilus and bifidobacteria (T2 and T4),
respectively. The textural characteristics were revealed that the hardness and gumminess negatively
correlated to cohesiveness and springiness. Kareish cheese made with starter and rennet (T3 and T4)
had the lowest hardness, gumminess and chewiness values, but the highest values of cohesiveness
and springiness. Micrographs were shown contained (T1) and (T2) cheeses on cluster bacterial starter
cells. Also, protein aggregates and voids were observed in micrographs of (T3) and (T4) cheeses
made with rennet and different starter strains (not shown). Sensory evaluation showed that Kareish
cheeses made with different starters and rennet were more accepted by the panellists than with
starters only.
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