Bacteriostatical characteristics analisys
The films obtained in the previous paragraph were applied to grapes by immersion method. This kind of berries has been chosen because of its popularity among customers, but it is tend to rapid spoilage during storage. The initial сontamination was found by the means of microbiological washout method, after which the control samples without the film and the film-forming composition coated prototypes were left on cold storage during the month (t=0–4 °C, relative humidity 60–65%). At regular intervals (3, 14, 30 days), microbiological washouts were made from them, which were cultivated in the MPA (meat-peptone agar) for 24 hours at 37 °C. Further colonies were counted using the formula:
Bacteriostatical characteristics analisysThe films obtained in the previous paragraph were applied to grapes by immersion method. This kind of berries has been chosen because of its popularity among customers, but it is tend to rapid spoilage during storage. The initial сontamination was found by the means of microbiological washout method, after which the control samples without the film and the film-forming composition coated prototypes were left on cold storage during the month (t=0–4 °C, relative humidity 60–65%). At regular intervals (3, 14, 30 days), microbiological washouts were made from them, which were cultivated in the MPA (meat-peptone agar) for 24 hours at 37 °C. Further colonies were counted using the formula:
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