Crambe seed processing. improved feed meal by soda ash treatment

Abstract

Crambe seed, like rapeseed, is characterized by having thioglucosides and perhaps other antigrowth factors that diminish feed value and palatability. A soda ash cooking process was developed that modifies the thioglucosides in crambe meal and significantly improves its feeding value.Destruction of the undesirable thioglucoside fraction of the meal was demonstrated, not only by paper chromatographic changes but also by negative results in tests which were based on conversion of the thioglucoside to thiooxazolidone. Sodium carbonate, added at a level of 1.4% (whole seed basis), destroys both the goitrin precursor, epi-progoitrin thioglucoside, and the ultraviolet-absorbing compounds in the meal, at least one of which is associated with bitterness. Animal-feeding tests demonstrated the improved palatability and nutritional quality of tile meal.

Brassicaceae Burnett

“…Similar to that of rapeseed, the oil has a high erucic acid content and has been of considerable interest as a lubricant (Mustakas et al 1968). Similar to that of rapeseed, the oil has a high erucic acid content and has been of considerable interest as a lubricant (Mustakas et al 1968).…”

“…Similar to that of rapeseed, the oil has a high erucic acid content and has been of considerable interest as a lubricant (Mustakas et al 1968). Its palatability is markedly improved by treatment with heat and sodium carbonate (Mustakas et al 1968;Lambert et al 1970). Its palatability is markedly improved by treatment with heat and sodium carbonate (Mustakas et al 1968;Lambert et al 1970).…”

The effects of processing on the nutritive value of vegetable-protein concentrates

“…Ammoniation also improved the nutritive value of the seed for pigs and poultry (Kirk, Mustakas & Griffin, 1966) but the product was unpalatable for calves in long-term feeding trials. Better palatability for cattle and poultry was found for a product obtained by treatment of the seed with soda ash at a level of 14 glkg based on whole-seed weight (Mustakas, Kirk & Griffin, 1968). It has been discovered recently that salts of iron and copper will decompose the thioglucoside, epi-progoitrin without reducing the lysine content, and rats given FeS0,-treated crambe-seed meal as 300 g/kg of the total diet gained 700/6 of the weight gained by controls.…”

Microwave inactivation of thioglucosidase in intact crambe seeds

“…However, crambe seeds contain glucosinolates that when hydrolyzed by an endogenous enzyme, thioglucosidase, produce toxic compounds which limit palatability to animals and render the meal toxic to nonruminants (6). Various processing methods have been developed to detoxify crambe meal by either decomposing the glucosinolates (2,7,8) or by inactivating thioglucosidase and removing the intact glucosinolates by aqueous extraction (9)(10)(11). Both dry and moist heat have been used to inactivate thioglucosidase (12).…”