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KMID : 0620720190250010049
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Natural Product Sciences
2019 Volume.25 No. 1 p.49 ~ p.58
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Study on the Marker Steroids of New Zealand Deer (Cervus elaphus var. scoticus) Velvet Antler by UPLC-MS/MS and HPLC-PDA Methods - (II)
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Lee Nam-Kyung
Jang Jung-Ho
Lee Jong-Tae
Park Hee-Won
Han Sung-Tai
In Gyo
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Abstract
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Eleven steroid hormones (SHs: androstene-3,17-dione, estrone, β-estradiol, α-estradiol, testosterone, dehydroepiandrosterone, 17a-hydroxyprogesterone, medroxyprogesterone, megestrol acetate, progesterone, and androsterone) were detected from New Zealand deer (Cervus elaphus var. scoticus) velvet antler (NZA, 鹿茸). A method for the quantification of eleven SHs was established by using ultraperformance liquid chromatography (UPLC)-MS/MS. The linearities (R2 > 0.991), limits of quantification (LOQ values, 0.3 ng/mL to 23.1 ng/mL), intraday and interday precisions (relative standard deviation: RSD < 2.43%), and recovery rates (97.3% to 104.6%) for all eleven SHs were determined. In addition, a method for the quantification of three 7-oxycholesterols (7-O-CSs: 7-ketocholesterol, 7α-hydroxycholesterol, and 7β-hydroxycholesterol) in the NZA was established by using an HPLC-photodiode array (PDA) method. The linearities (R2 > 0.999), LOQ values (30 ng/mL to 350 ng/mL), intraday and interday precisions (RSD < 1.93%), and recovery rates (97.2% to 103.5%) for the three 7-O-CSs were determined. These quantitative methods are accurate, precise, and reproducible. As a result, it is suggested that the five steroid compounds of androstene-3,17-dione, androsterone, 7-ketocholesterol, 7α-hydroxycholesterol, and 7β-hydroxycholesterol could be marker steroids of NZA. These methods can be applied to quantify or standardize the marker steroids present in NZA.
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KEYWORD
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New Zealand deer antler, marker steroid, UPLC-MS/MS, HPLC-PDA, steroid hormone, 7-oxycholesterol
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