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Recovery of protein and microorganisms from shrimp peeler effluent
- Depaola, A., Perkins, B.E., Harper, K.P., McPhearson, R.M.
- Journal of food science : an official publication of the Institute of Food Technologists 1989 v.54 no.6 pp. 1660-1662
- shrimp, food processing, waste utilization, proteins, microorganisms
- A study was conducted to determine the quantity and quality of proteinaceous solids recoverable from mechanical shrimp peeler effluent. Solids were recovered by HCl precipitation and centrifugation. Recovery of solids from untreated effluent was 1%-2% by weight (ca. 10% protein) and was predictable by turbidity. The precipitation/centrifugation process reduced supernatant total organic nitrogen and biochemical oxygen demand approximately 50% and turbidity by over 90% compared with untreated effluent. Total aerobic plate counts (APC) of bacteria recovered from unprocessed shrimp and precipitated solids were 10(5)-10(6) CFU/g, approximately 1.5 log units greater than from peeled shrimp or untreated shrimp effluent. Total APC of bacteria recovered from clarified effluent was 3.2 X 10(1) CFU/mL.