A Bioindicator for Verification of Thermal Processes for Particulate Foods

S. K. SASTRY, S. F. LI, P. PATEL, M. KONANAYAKAM, P. BAFNA, S. DOORES, R. B. BEELMAN

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36 Scopus citations

Abstract

A bioindicator was developed for verification of heat‐hold‐cool thermal processes for particulate foods. Spores of B. stearothermophilus were infused and immobilized within individual mushrooms using alginate gels. The particles were then made shelf‐stable by freeze‐drying. Results showed that thermal responses of bioindicator particles were similar to those for real particles; spores were successfully infused into the particle cold‐zones; and that spores were retained within particles through reconstitution and blanching. Results on thermal processing showed that these particles might be potentially useful indicators of sterility in continuous aseptic systems.

Original languageEnglish (US)
Pages (from-to)1528-1536
Number of pages9
JournalJournal of Food Science
Volume53
Issue number5
DOIs
StatePublished - Sep 1988

All Science Journal Classification (ASJC) codes

  • Food Science

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