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US 6,685,975 B2Granted
Process for recovering bone and oil from animal byproducts
AssigneeBiozyme Systems Inc.
InventorsDavid J. Saxby, Gregar Saxby, Pedro Aloise, Larry Leroux
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AssigneeBiozyme Systems Inc.
InventorsDavid J. Saxby, Gregar Saxby, Pedro Aloise, Larry Leroux
Estimating the term…
A processing method used for separating bone and oil from marine byproducts in the preparation of an endproduct. The byproducts are ground and then warmed to a relatively low temperature of approximately 70 deg.C. or less. The warmed material is passed to a refiner to separate the bone from the meat portions. The meat portion is transferred to a digestion tank where the endogenous enzymes perform a first stage digestion. Exogenous enzymes may be added and further digestion may take place for increased liquefaction of the meat portion. The exogenous enzymes can survive temperatures higher than the 60-65 deg.C. range so the liquified material can be heated during the further digestion to increase hydrolysis and pasteurize the product. Oil may be removed from the product by centrifuge following completion of either digesting step. Evaporation of the product may be used to increase the percentage of solid material. Alternatively, the oil may be removed after digestion without mechanically deboning the byproducts.
Method of removing oil from animal byproduct material, said method comprising the step of warming the temperature of said animal byproduct material to a temperature of less than 95 deg. C. and higher than 55 deg. C., incubating and digesting said animal byproduct material in a first incubating and digesting step using the naturally occurring endogenous proteolytic enzymes of said animal byproduct material to liquefy said animal byproduct material and centrifuging said liquefied animal byproduct material to remove said oil.
Method of removing bone from marine byproduct material comprising the steps of warming said marine byproduct material above the temperature of digestion naturally occurring in said marine byproduct material and which digestion utilises endogenous enzymes and occurs at a pH of above about 6.2 and at a pH of less that about 8.5, said marine byproduct material being warmed to a temperature of less than 95 deg. C. and higher than a temperature of 55 deg. C. and subsequently deboning said marine byproduct material.
Method for recovering bone and oil from marine byproduct material comprising the steps of grinding said marine byproduct material to reduce the size of solids therein, warming said marine byproduct material to a temperature greater than that wherein naturally occurring digestion takes place but less than 70 deg. C. and higher than 50 deg. C., deboning said warmed marine byproduct material, incubating and digesting said marine byproduct material in a first digesting step using the endogenous enzymes of said marine byproduct material to liquefy said marine byproduct material and centrifuging said marine byproduct material following said first digesting step to remove said oil.
Dependencies are inferred from the claim text.