한약재로 이용하는 황련을 메탄올 추출하여 화랑곡나방 3령 유충, 팥바구미 성충을 대상으로 훈증활성을 실험한 결과, 화랑곡나방 유충은 2.82mg/㎠에서 처리 3일 후 90% 이상의 살충률을 보였고, 팥바구미 성충은 0.70mg/㎠에서 처리 3일 후 91% 이상의 높은 살충률을 나타냈다. 훈증독성에 따른 화랑곡나방 유충에 대한 LC50, LC80, LC90 값은 각각 138.7(g/L), 497.1(g/L), 915.7(g/L)이었으며, 팥바구미 성충에서 LC50, LC80, LC90 값은 각각 21.9(g/L), 203.6(g/L), 652.7(g/L)이었다. 따라서 황련 메탄올추출물은 저곡해충에 대한 우수한 잠재 활성을 갖는 것이 확인 되었다.
Methanol extract of Coptis chinensis was tested for its fumigant activity against Plodia interpunctella larvae and Callosobruchus chinensis adult. The fumigant activity of C. chinensis extracts against P. interpunctella larvae was shown more than 90% mortality at 3 days after treatment and for C. chinensis adult the mortality was 91% at 0.70mg/㎠ with 3 days after treatment. By the fumigant toxicity test, LC50, LC80 and LC90 against P. interpunctella larvae were 138.7(g/L), 497.1(g/L) and 915.7(g/L), whereas LC50, LC80 and LC90 against C. chinensis adult were 21.9(g/L), 203.6(g/L) and 652.7(g/L), respectively. The result obtained indicated that this naturally occurring plant extract could be useful for managing populations of two stored product insects, P. interpunctella and C. chinensis.