A PROCESS  FOR THE TRANSFORMATION OF SOLID WASTES FROM CASING MANUFACTIURES BY FERMENTATION

ELMJADLI  A. FAID  M.  MALKI   and  FAHDE A.

SUMMARY

Solid wastes of the casing industry  were collected from a high production unit. These wastes were minced and, supplied with 10% cane molasses and inoculated with a starter culture made of Lactobacillus plantarum. The mixture was incubated at 30°C for 10 days and the microbiological characteristics including plate count, coliforms, Salmonella, Clostridium and  lactic acid bacteria were daily determined during the incubation period. The pH was also followed up during the same period. Results indicated that the pH was decreased to low levels and may stay constant around 4. The obtained product showed low counts of coliforms. Salmonella was not detected in the obtained product. The plate count increased during the first phase of the fermentation and decreased when the acidity reached the maximum. Clostridium counts decreased considerably and may stabilize after one week incubation. Lactic acid bacteria grow well in the mixture and showed high counts during the fermentation and consequently the pH was decreased to 4.