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Updated: Oct 17, 2026

Novel Production Protocol for Small-scale Manufacture of Probiotic Fermented Foods
Published on: September 10, 2016
[Study on the contamination level and the tolerable limit of mould and yeast in yoghurt]
Abstract:
The results show that 67.33% of yoghurt samples collected from factories, supermarkets and retailers are contaminated by mould and yeast. The main problem of yoghurt product is yeast contamination (56.67%). The highest count of mould and yeast in the positive samples are 39,500 cft/ml and innumerable, respectively. There is a significant difference in the levels of contamination of mould and yeast between yoghurt filled in the glass bottles and that in the plastic bottles (P < 0.005). According to the results above, it is suggested that the tolerable limit of mould and yeast in yoghurt should be equal to or less than 50 cfu/ml.
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