Effect Of Hydrogen Peroxide, Lactoperoxidase And Ultrasound On Microbiological Quality And Safety Of Raw Milk
Safety and quality of raw milk is of major concern in malaysia due to poor hygiene on the farms and the lack of cold chain for storage and during transportation of raw milk. The objectives of this study are to determine the microbiological quality and safety of raw milk produced by small dairy fa...
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| Format: | Thesis |
| Language: | English |
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2017
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| Online Access: | http://eprints.usm.my/62905/ http://eprints.usm.my/62905/1/9-Pages%20from%20PHS18020473.pdf |
| Summary: | Safety and quality of raw milk is of major concern in malaysia due to poor
hygiene on the farms and the lack of cold chain for storage and during transportation
of raw milk. The objectives of this study are to determine the microbiological quality
and safety of raw milk produced by small dairy farms in penang; to evaluate the
reliability of platform tests used at milk collection centers for assessment of quality
and shelf life potential of raw milk; to determine the effects of different
concentration of hydrogen peroxide (h2o2), lactoperoxidase system (nascn: h2o2
ratio) and effect of ultrasound on selected spoilage organisms and food-borne
pathogens in milk. Raw milk obtained from 5 different farms had high total plate
(tpc) (7.77 ± 0.33 log cfu ml’1), colifonns (3.40 ± 0.22 log cfu ml’1) and
staphylococcus aureus (3.17 ± 0.14 log cfu ml'1) counts. Ninety percent of samples
examined were positive for e. Coll. Salmonella serovars and listeria monocytogenes
were detected in 5 and 3.33% of raw milk samples, respectively. |
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