Method for removing glucosinolates from oilseed meals
AssigneeAgrisoma Biosciences Inc.
InventorsMark Hetherington, Travis Hoffman, Michael Lindenbaum
Life of this patent
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Abstract
A process to remove the glucosinolates of oilseed meals, such as Brassica carinata oilseed meals, is provided. In one embodiment, exogenous myrosinase is used to convert the glucosinolates to volatile isothiocyanate compounds, which can then be removed under conditions of mild heat and negative pressure. In another embodiment, heat and pressure are used to remove glucosinolates from Brassica carinata oilseed. The processed meals may contain less than 80% of their starting levels of glucosinolates and may be suitable for use in various applications, including as animal feeds.
Claims12
An animal feed additive comprising a meal fraction produced from Brassica carinata oilseed, wherein said meal fraction comprises less than 20 μmol total glucosinolates per gram of meal and is produced by a process comprising:
- obtaining Brassica carinata oilseed comprising between about 60 and about 100 μmol total glucosinolates per gram of oilseed in which sinigrin constitutes more than 90% of the total glucosinolate content of the Brassica carinata oilseed;
- pressing the Brassica carinata oilseed to produce oilseed flakes;
- cooking the oilseed flakes at a temperature in the range of 105° C. to 120° C. for a period of 10 to 100 minutes;
- pressing the cooked oilseed flakes to remove oil from the oilseed flakes, thereby producing an oil fraction and a meal fraction;
- treating the meal fraction with hexane to extract residual oil;
- desolventizing-toasting the hexane-extracted meal fraction to remove residual hexane for a period of greater than 1 hour but less than 5 hours;
- drying the meal fraction to a moisture content of 12% or less, and recovering a meal fraction of Brassica carinatahaving a total glucosinolates content of less than 20 μmol per gram of meal.
Dependencies are inferred from the claim text.