Microbiology Procedure
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Index >> Microbiology of Food >> Sauerkraut

Sauerkraut

Sauerkraut - Sauerkraut results from a fermentation of cabbage by bacteria which are normally present on the cabbage. Under commercial production pure cultures of lactobacilli are sometimes used to aid the process.

The shredded cabbage is packed with about 25 per cent salt in jars or barrels. Wooden frames are placed on the cabbage to keep it submerged (anaerobic). The combined action of salt and pressure withdraws juice from the vegetable.

Leuconostoc mesenterodies and other cocci initiate fermentation and produce 0.7 to 1-.0 per cent lactic acid. Lactobacilli then multiply and continue the fermentation, increasing the acidity to as much as 2.4 per cent lactic acid. Acids, esters, and diacetyl give pleasant aromas and flavours. Fermentation requires three to four weeks 21 to 29"C.

 

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