Discussion
Lactic acid bacteria obtain their energy in a vegetable fermentation by
Answer: D
Correct answer: Fermenting the sugars present in the vegetable juice
The bacteria ferment the sugars released from the cabbage or cucumber into lactic acid, and it is that acid which preserves the product. They obtain no energy from salt, cannot photosynthesise, and do not attack pectin - pectin breakdown is a spoilage process that softens pickles.
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