• 대한화학회지
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• 제54권1호
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• pp.38-42
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• 2010

인간뇨의 마트린 알칼로이드의 결정을 위한 민감한 정량적 방법은 HPLC에 결합된 중공섬유 액상 미세추출을 기반으로 개발되었다. pH를 포함하여 HF-LPME 효율의 다양한 인자의 영향과 공급 용액의 이온세기, 수용체용액의 pH, 교반율 그리고 추출시간이 조사되었다. 최상의 HF-LPME 조건은 다음과 같다: 1-octanol이 중공섬유의 기공안에 주입된다, 중공섬유의 루멘에 pH 1.50의 100 mmol/L of $H_3PO_4$ 수용체 용액을 주입한다, 1 mol/L NaOH는 공급 용액의 pH, 600 rpm의 교반속도와 60분의 추출시간을 조정하여 사용된다. LPME의 방법은 실제의 소변 샘플에서 마트린과 소포카르핌의 분석에 성공적으로 적용되었다.

• 한국환경농학회지
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• 제34권1호
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• pp.1-5
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• 2015

BACKGROUND: The stabilities of the two alkaloidal insecticides of S. flavescens including matrine and oxymatrine are important factor to establish expiry date and usage manual for crop protection. However, the environmental stability of the compounds had not been studied with the extract and its commercial biopesticide. METHODS AND RESULTS: The environmental stabilities of the two alkaloids were performed with extract of S. flavescens, and its two commercial biopesticides both in controlled aquatic and soil conditions. The half-lives of the total matrines for the extract and its two commercial biopesticides were estimated over 200 days both under aerobic and anaerobic water condition. Under dry soil condition, the initial decay rates of the matrines were calculated 0.0804-0.1275 ($t_{1/2}$ 5.4-8.6 days), and the half-lives under wet soil condition were calculated 33.0-231 days. Total soil bacteria on the wet soil ranged 6.0-8.0 log CFU/g-soil during the experiments period. CONCLUSION: The aquatic mixture of the extract showed excellent stability both with the extract and its biopesticides, however, the stability of soil mixture were shorter than the aquatic mixture, suggesting that soil metal consider as a catalyst for the degradation of the two alkaloids.