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- W2002325158 abstract "Abstract Supercritical CO2 (SC-CO2) extraction technology and ultrasonic technology were used to extract two active sex hormones, estradiol and progesterone, and insulin-like growth factor-1 (IGF-1) from antler velvet. The effects of SC-CO2 extraction condition on the extraction yield and content of sex hormones, the ultrasonic extraction condition on the content of IGF-1 and the SC-CO2 extraction condition on the activity remaining of IGF-1 were studied. The optimal conditions were obtained. The experimental results showed that, in presence of 75% ethanol as the co-solvent, the mean yield and content of estradiol and progesterone were 87.67 pg·g−1 and 1224.10 pg·g−1, 12.38 ng·g−1 and 354.06 ng·g−1, respectively, with extraction pressure of 30 MPa, temperature of 35°C, extraction time of 30 min and CO2 consumption of 15 L·g−1 at the flow rate of 2.0 L·min−1. The highest content of IGF-1 was 7425.75 ng·g−1 antler velvet residue, when the pH10 ammonia-ammonium chloride buffer solution was used as the solvent, the ratio of solvent to sample was 20/1 (volume/mass), the extraction temperature was 0-35°C, and the extraction time was 4 × 15 min. Under these conditions, 93.68% activity remaining of IGF-1 in the residue was obtained, while little IGF-1 activity exists in traditional residue. The experimental results indicate that the technology of SC-CO2 with co-solvent is of advantage for getting high content sexual hormones and keeping high activity of IGF-1 in the residue, which can not be achieved by traditional extraction methods." @default.
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- W2002325158 date "2009-06-01" @default.
- W2002325158 modified "2023-09-25" @default.
- W2002325158 title "Combination of Supercritical Fluid Extraction with Ultrasonic Extraction for Obtaining Sex Hormones and IGF-1 from Antler Velvet" @default.
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- W2002325158 doi "https://doi.org/10.1016/s1004-9541(08)60219-0" @default.
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