Protein and lipid sources for use in aquafeeds and animal feeds and a process for their preparation
AssigneeHer Majesty the Queen in right of Canada as represented by the Minister of Fisheries of Oceans
InventorsDavid Higgs, Robert E. Cairns, Ian Shand
Life of this patent
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Abstract
A process for preparation of nutritionally upgraded oilseed meals which are protein and lipid-rich and have a reduced fiber content, and plant oils from oilseeds for use in fish or other non-human animal diets or human foods comprising the steps of: providing a source of oilseed; subjecting the oilseed to heat treatment to substantially reduce the concentration of at least some antinutritional components normally present in the oilseed to obtain heat-treated seed; dehulling the heat-treated seed to produce a meat fraction, a hull fraction or a mixture thereof; and cold pressing the meat fraction or the mixture to yeild the plant oils and the protein and lipid-rich meals.
Claims32
A process for preparation of nutritionally upgraded oilseed meals, which are protein and lipid-rich and have a reduced fibre content, and plant oils from oilseeds for use in fish or other non-human animal diets or human foods comprising the steps of:
- providing a source of oilseed;
- subjecting said oilseed to heat treatment to substantially reduce the concentration of at least some antinutritional components normally present in said oilseed to obtain heat-treated particulate seed;
- providing a source of unhydrolyzed animal offal;
- blending said heat-treated seed in particulate form with said animal offal, and if required water together with an antioxident, to form a mixture thereof;
- cooking said mixture under conditions selected to substantially improve protein digestibility, and substantially free cellular water present in said animal offal, as well as to facilitate separation of protein from the lipid in said animal offal and said oilseeds to obtain a cooked mixture;
- and
- separating said cooked mixture into a stickwater fraction, a moisture containing protein-rich fraction, and an animal feed grade oil fraction.
In a process for the preparation of nutritionally unaraded oilseed meal from co-processing of animal offal with oilseed for use in fish or other non-human animal feeds, wherein the process includes the steps of providing a source of oilseed and cold pressing said oilseed to substantially reduce the particle size of said oilseed to yield a high value human grade oil and protein and lipid-rich meal with reduced fibre content;
- the improvement comprising the further steps of:
- providing a source of unhydrolyzed animal offal;
- blending said protein and lipid-rich meal with said animal offal, and if required water together with an antioxident, to form a blended mixture thereof;
- cooking said blended mixture under conditions selected to substantially improve protein digestibility, and substantially free cellular water present in said animal offal, as well as to facilitate separation of protein from the lipid in said animal offal and said oilseeds to obtain a cooked mixture;
- and
- separating said cooked mixture into a stickwater fraction, a moisture containing protein-rich fraction, and an animal feed grade oil fraction.
In a process for preparation of nutritionally upgraded oilseed meals, which are protein and lipid-rich and have a reduced fibre content, and plant oils from oilseeds for use in fish or other non-human animal diets or human foods the improvement comprising the steps of:
- providing a source of oilseed;
- subjecting said oilseed to a drying step to obtain oilseed having a moisture content of less than 10% to thereby improve dehulling of said oilseed;
- dehulling said oilseed to provide a source of dehulled oilseed;
- providing a source of unhydrolyzed animal offal;
- blending said dehulled oilseed with said animal offal, and if required water together with an antioxident, to form a mixture thereof;
- cooking said mixture under conditions selected to substantially improve protein digestibility, and substantially free cellular water and lipids present in said animal offal, as well as to facilitate separation of protein from the lipid in said animal offal and said oilseeds to obtain a cooked mixture;
- and
- separating said cooked mixture into a stickwater fraction, a moisture containing protein-rich fraction, and an animal feed grade oil fraction.
Dependencies are inferred from the claim text.