| 摘要 |
A method for obtaining substantially pure fixed oil(s), oleoresin and dietary fiber from Fenugreek seeds is provided. The method employs two different solvent extraction stages, wherein the first extraction isolates fixed oils and the second extraction isolates oleoresin. The dietary fiber remaining after extraction is clean, approximately light yellow to light brown, substantially tasteless and substantially odorless. An extraction system (23) for conducting the extractions is also provided. The extraction system (23) includes a condenser (24), a seed holding extraction vessel (25), a reboiler ((26), solvent and extract reservoir) and a feedback loop (28). The extraction solvent is obtained from the reboiler and it is contacted with the Fenugreek seeds while hot shortly after condensation in the condenser. The extraction system employs minimal amounts of solvent compared to conventional processes. In terms of color, taste, and/or odor, the food grade isolated fixed oils, oleoresin and dietary fiber are superior to those products obtained from conventional extraction processes.
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