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Sauerkraut fermentation must be conducted under conditions that are

  • A.Anaerobic, with the cabbage kept below the brine
  • B.Aerobic, with the shredded cabbage exposed to the air
  • C.Sterile, with every organism excluded beforehand
  • D.Alkaline, with lime stirred into the brine

Answer: A

Keeping the shredded cabbage submerged excludes oxygen, which favours the lactic acid bacteria and denies moulds and film yeasts the surface they need. Exposure to air is the usual cause of surface growth and of the softening that follows it.

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