Abstract
ABSTRACTAn unusual type of spoilage was encountered in canned green olives stuffed with anchovies. The spoilage was characterized by a gradual decrease in acidity of the olive brine from about pH 4.3 to 5.25 and a swelling of the cans caused by CO2. Spoilage of the product was caused by decomposition of the anchovies by proteolytic enzyme action, with subsequent decarboxylation and deamination of amino acids from the anchovies by heterofermentative lactobacilli. This type of spoilage, known as “protein swells”, occurs with canned fish marinades but, to our knowledge, does not occur with other acidified canned foods.
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