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Survival of Brevibacterium linens (ATCC 9174) after spray drying, freeze drying, or freezing



Survival of Brevibacterium linens (ATCC 9174) after spray drying, freeze drying, or freezing



Journal of Food Science 62(1): 167-170, 189



The objectives of this work were to: (1) contrast spray drying, freeze drying and freezing for large-scale preservation of B. linens, (2) determine the thermal resistance curves, and (3) measure the storage stability. When B. linens was freeze-dried and frozen in feed suspensions containing 3% (w/v) cell paste and 25% (w/w) total solids, survival was 100%. During spray drying, lethal thermal injury was the main cause of loss of viability. Accordingly, by extrapolation, 100% viability would be possible at an outlet-air temperature of 57 degrees C. Spray-dried and freeze-dried cells were stable during storage at 4 degrees C in the absence of oxygen and moisture.

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Accession: 002973078

Download citation: RISBibTeXText

DOI: 10.1111/j.1365-2621.1997.tb04392.x


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