M-532.60.517 [2024-03] Raw material samples of non-alcoholic beverages – Two-stage enrichment of general beverage spoilers using liquid pre-enrichment and pour plate

Application/Purpose

Detection of harmful osmophilic and osmotolerant yeasts, moulds and bacteria in NAB raw material samples

Scope of Application

Raw material samples (e.g. fruit juice concentrates, sugar syrup, etc.) in the NAB area

Principle

The microorganisms should be quickly transferred from the lag phase to the log phase by the liquid pre-enrichment and then visualised as a colony in the agar plate.

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