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Oleoresin extraction from fennel seeds using a supercritical fluid extraction (SFE) was carried out. Box–Behnken experimental design was used to optimize the SFE variables: pressure (10, 17.5, and 25MPa), temperature (313.15, 323.15, and 333.15K) and time of extraction (1, 2.5, and 4h). Different percentages of methanol (0, 3, and 6%) were also evaluated to improve the extraction of the corresponding...
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