Yogurt is a product that has been very popular for long time. Made from various milk, whether fresh milk or skim milk. Yogurt is
rich in nutrients (Aquirre and Collins, 1993) including the lactic acid bacteria ) Lactobacillus delbrueckii subsp. bulgaricus and
Streptococcus thermophilus) which have important role in balancing the digestion and absorption of the body (Medina and
Jordano, 1994). Consumers will benefit from lactic acid bacteria more or less depending on the amount of bacteria that lives in
yogurt while eating (Gurr, 1992). Production, packaging, storage and transport are all affecting the quality of yoghurt. This lactic
acid bacteria microorganisms are limit aged in storage. Therefore, various strategies have been used to prolong shelf life such as
low temperature storage and dried yogurt. This research studied freezing dry yogurt storage by monitored on the survival
of starter when stored at different temperatures. At 4 0
C , the number of starter reduced 2 log cycle every month of 6
month storage. At 30 0 C, number of starter dropped to 10-1 in the first month. Drying yogurt storage at 30 0 C could reformed to
be good character yogurt, good glomerate curd and acetaldehyde smell, only 1 month storage. After 1 month, it couldn’t bring
back the yogurt form. While dried yogurt stored at 4 0 C could reformed for 3 month but the yogurt in the third month had
loose form wedge. From 4-6 month, the yogurt themselves separated obviously. So keeping freezing dry yogurt must storage
in dry condition at low temperatures. Shelf life of good quality reform yogurt don’t exceed three month.
Yogurt is a product that has been very popular for long time. Made from various milk, whether fresh milk or skim milk. Yogurt isrich in nutrients (Aquirre and Collins, 1993) including the lactic acid bacteria ) Lactobacillus delbrueckii subsp. bulgaricus andStreptococcus thermophilus) which have important role in balancing the digestion and absorption of the body (Medina andJordano, 1994). Consumers will benefit from lactic acid bacteria more or less depending on the amount of bacteria that lives inyogurt while eating (Gurr, 1992). Production, packaging, storage and transport are all affecting the quality of yoghurt. This lacticacid bacteria microorganisms are limit aged in storage. Therefore, various strategies have been used to prolong shelf life such aslow temperature storage and dried yogurt. This research studied freezing dry yogurt storage by monitored on the survivalof starter when stored at different temperatures. At 4 0C , the number of starter reduced 2 log cycle every month of 6month storage. At 30 0 C, number of starter dropped to 10-1 in the first month. Drying yogurt storage at 30 0 C could reformed tobe good character yogurt, good glomerate curd and acetaldehyde smell, only 1 month storage. After 1 month, it couldn’t bringback the yogurt form. While dried yogurt stored at 4 0 C could reformed for 3 month but the yogurt in the third month hadloose form wedge. From 4-6 month, the yogurt themselves separated obviously. So keeping freezing dry yogurt must storageในสภาพที่แห้งที่อุณหภูมิต่ำ อายุการเก็บรักษาโยเกิร์ตปฏิรูปคุณภาพดีไม่เกินสามเดือน
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