Expert laboratorians present a wide ranging set of detailed techniques for
investigating the nature, products, and extent of the microorganisms involved in
the manufacture and spoilage of foodstuff. The methods cover pathogenic
organisms that cause spoilage, microorganisms in fermented foods, and
microorganisms producing metabolites that affect the flavor or nutritive value
of foods. Included in the section dealing with fermented foods are procedures
for the maintenance of lactic acid bacteria, the isolation of plasmid and
genomic DNA from species Lactobacillus, and the determination of proteolytic
activity of lactic acid bacteria. A substantial number of chapters are devoted
to yeasts, their use in food and beverage production, and techniques