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Which organism is most likely to be responsible if a pickle brine turns ropy?

  • A.Lactobacillus plantarum
  • B.Rhodotorula glutinis
  • C.Clostridium butyricum
  • D.Leuconostoc mesenteroides

Answer: D

Leuconostoc converts sucrose into dextran, and it is that polysaccharide which makes the brine pour thickly. Lactobacillus plantarum produces no dextran, Rhodotorula gives pink discolouration, and clostridia belong to late secondary spoilage.

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