BIOL345 Lecture Notes - Anaerobic Organism, Flavobacterium, Lactococcus
9 Dec 2013
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Can1 foods preserved by heat sterilization within a hermetically sealed container invented by appert, others contributed (e. g. , durand & de heine, 12d concept: a process lethality requirement, e. g. , in the canning industry. Can2 idea is enough heat (or other process) must be applied to reduce 1012 spores . 1 spore/ml or g reality: starting population never approaches 1012. F0 = d121(log a log b) = 0. 21(log 1 log 10-12) = 0. 21 x 12 = 2. 52 min i. e. , processing for 2. 52 min would reduce it to 1 spore per 1012 cans. Heat resistance of endospores of some thermophilic & mesophilic spoilage organisms: 0. 10 - 0. 20 thermophilic; mesophilic (after jay, 2000: aim to achieve a ~5d reduction in (non-c. botulinum) sporeformers to avoid spoilage, products distributed to warm climates may require more severe processing to deal with thermophilic sporeformers. India) retort pouched smoked salmon (e-fish-ent fish company ltd. (b. c. )"s website) preparation of vegetable soup for canning (prescott et al. ,1996.
