• 한국식품영양과학회지
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• 제39권9호
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• pp.1243-1248
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• 2010

본 연구는 마전자(Strychnos nux-vomica) 추출물의 항산화 활성 및 $\alpha$-glucosidase 저해활성을 측정하였다. 먼저, 마전자를 각각의 용매로 추출하여 페놀 함량을 알아본 결과 100 g당 SNM에서 71.43 mg을 함유하고 있으며, SNE에서는 24.51 mg, SNA에서는 11.17 mg을 함유하고 있었다. DPPH 라디칼 소거능은 SNM, SNE가 1 mg/mL의 농도에서 50% 정도의 활성을 나타내 항산화 효과가 있다는 것을 확인할 수 있었다. 또한 $200\;{\mu}M$ $H_2O_2$에 의한 DNA 손상에 대해 마전자 추출물의 보호 효과를 확인할 수 있었다. SNM의 $\alpha$-glucosidase 저해활성 측정 시 SNM 1 mg/mL의 농도에서 12.8%의 억제 활성을 나타내었고, SNM 처리시간을 증가시킬 경우 그 활성도가 유의적으로 증가하는 것을 보였다. 이상의 결과로 마전자 추출물의 항산화 활성 및 SNM의 $\alpha$-glucosidase 억제 활성을 확인할 수 있었다.

• 약학회지
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• 제57권2호
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• pp.87-94
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• 2013

An analytical methodology based on solid-space extraction (SPE) with with Bond Elut Certify cartridge (Varian, 130 mg) has been developed for the qualification and quantitation of strychnine in blood. After the elution layer was evaporated, the residue was reconstituted with methanol for GC/MS. Internal standard was used 10 mg/l dextromethorphan. Strychnine is a potent central nervous stimulant and convulsant, and an alkaloid found in seeds of Strychnos nux-vomica. It was used therapeutically to improve circulation and muscle tone in oral or intramuscular doses of 0.05~8 mg. The fatal dose of strychnine for humans is 50~100 mg. A man was found dead lying curled up the corner of the large room in a roof house after the fire fighter opened a locked door inside to put out the fire. The postmortem blood and gastric contents were analyzed for toxicological testing. Strychnine and brucine were detected using GC/MS first in gastric contents extracts. The contents of strychnine was 0.083 mg/l in heart blood, 0.088 mg/l in peripheral blood and 4.0 mg/kg in gastric contents, respectively. Method validation was carried out in terms of linearity, accuracy, precision (intraday, interday) in blood. The assay is linear over 0.05~10 mg/l ($r^2$=0.999). Limit of detection (LOD) and limit of quantitation (LOQ) in blood were determined 0.02 mg/l (S/N=3) and 0.07 mg/l (S/N=10), respectively. Accuracy (bias%) of strychnine with 0.1, 1 and 10 mg/l was 12.0% (n=6), 9.3% (n=6) and 6.9% (n=6), respectively. Intraday precision (CV%) of strychnine with, 0.1, 1 and 10 mg/l were 6.4%, 10.4%, 1.2% (n=6), respectively. Interday precision (CV%) of strychnine with 0.1, 1 and 10 mg/l over three days were 24.0%, 18.5%, 13.8% (n=18), respectively. Relative recovery with 0.1, 1 and 10 mg/l (in blood) were 114.9%, 99.3% and 87.4% (n=6), respectively. The described method can be applied in forensic toxicology to determine strychnine in blood samples.