| 摘要 |
A process for the treatment of industrial or agricultural waste matter including animal protein comprises (a) obtaining the waste matter in the form of an aqs. mass, (b) chopping up the aqs. mass, (c) treating the chopped mass with proteolytic enzymes of microbial origin so as to form a fluent suspension, (d) obtaining a gelatinised starch content in the suspension and (e) adding to this suspension amylolytic enzymes of microbial origin and a lactic acid producing culture and fermenting anaerobically at 20-65 deg.C to produce simple sugars and lactic acid whereby a preserved prod. is obtd. Pref. the aqs. mass in step (a) contains 15-45% dry matter. The suspension after step (c) is pref. sterilised at 130-180 deg.C for 5-60 mins. In step (e) a process accelerator may be added e.g. Mn(+2), Co(+2), Fe(+2), Zn(+2) or Cu(+2) at 0.08-0.8 ppm. The lactic acid bacteria is e.g. of the species Lactobacillus acidophilus, Streptococcus lactis, Pediococcus acidilactici, Lactobacillus plantarum or Streptococcus thermophilus. |
