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인도산 아프리카산 식물체 추출물의 장내세균에 대한 생육억제 반응
안용준,박석준,최돈하,조형찬,( Young Joon Ahn,Suck Joon Park,Don Ha Choi,Hyung Chan Cho,I . G . Hiremath ) 한국응용생명화학회 1998 Applied Biological Chemistry (Appl Biol Chem) Vol.41 No.1
Methanol extracts from 84 Indian plant samples (50 species in 31 families) and 27 African plant samples (20 species in 12 families) in vitro were tested for their growth-inhibitory activities against Bifidobacterium bifidum, Bifidobacterium longum, Lactobacillus acidophilus, Clostridium perfringens, and Escherichia coli, using a paper disc agar diffusion method under O₂-free conditions. The responses varied with bacterial strain, plant species and plant part. Extracts from Cymbopogon citratus whole plants, Ocimum basilicum whole plant, Madhuca indica flowers, and Aegle marmelos leaves among Indian plant samples moderately or strongly inhibited the growth of Cl, perfringens whereas moderate growth-inhibitory activity against E. coli was obtained from extract of Indian O. basilicum whole plants. These plant extracts did not affect the growth of the lactic acid forming bacteria tested. These results may be an indication of at least one of the pharmacological actions of these tropical plants.
이회선,안용준 ( Hoi Seon Lee,Young Joon Ahn ) 한국응용생명화학회 1997 Applied Biological Chemistry (Appl Biol Chem) Vol.40 No.2
Methanol extracts from 25 seed samples belonging to the family Leguminosae were subjected to an in vitro screening for their growth-promoting and inhibitory activities towards Bifidobacterium adolescentis, B. longum, B. bifidum, and Lactobacillus casei, using spectrophotometric and paper disc agar diffusion methods under O₂-free conditions, respectively. The responses varied with both bacterial strains and plant species. Among seed extracts, extracts from Glycine max (light-green color) and Arachis hypogaea (dark-brown) enhanced the growth of lactic acid bacteria in media with or without carbon sources, suggesting that bifidus factor(s) might be involved in the phenomenon. This growth-promoting effect was most pronounced with L. casei among lactic acid bacteria used. Additionally, all seed extracts did not adversely affect the growth of the lactic acid bacteria tested.
감자수염진딧물(Macrosiphum euphorbiae Thomas)에 의한 감자 품종별 피해정도와 관련요인 분석
권민,장동칠,안용준,Kwon, Min,Chang, Dong-Chil,Ahn, Young-Joon 한국응용곤충학회 2008 한국응용곤충학회지 Vol.47 No.3
Fifty potato cultivars were screened for potato aphid, Macrosiphum euphorbiae Thomas infestation degree in the field. Aphid honey dew secretion and contents of foliar substances(glycoalkaloids, total nitrogen, Ca, K and Mg) of the cultivars were measured in the laboratory to analyze the correlation between infestation degrees and those factors. The number of aphids ranged from 4.1 to 31.4 per five leaves. The lower density(less than 5 aphids) was found on cvs. Jidose, Recent, and Sebago. The aphid secreted highest(40.3 droplets) and lowest(15.7 droplets) honeydew on cvs. Jopoong and Anco, respectively. Degree of infestation is positively correlated to glycoalkaloids and total nitrogen contents of the potato leaf. 감자(Solanum tubersum L.)의 주요 해충의 하나인 감자수염진딧물(Macrosiphum euphorbiae Thomas)에 의한 50개 감자 품종별 피해정도를 포장에서 검정하고 실내에서 배설 감로수와 식물체 내 성분(glycoalkaloids, total N, Ca, K, Mg) 함량을 품종별로 분석하여 피해도와의 상관성을 조사하였다. 50개 품종에 대한 감자수염진딧물의 포장 발생밀도 범위는 5엽당 $4.1{\sim}31.4$정도였으며, Jidose, Recent, Sebago 품종 등은 5마리 이하의 낮은 발생밀도를 보였다. 품종별 배설 감로수는 Jopoong에서 40.3개로 가장 많았고, 그 다음이 Superior로 37.7개였다. 가장 적은 품종은 Anco와 Shepody로 각각 15.7개, 16.7개였다. 포장실험과 실내시험 결과를 각 성분 함량별로 상관분석한 결과, 감자수염진딧물에 의한 피해는 glycoalkaloids 함량이나 전질소 함량과 정의 상관을 보였고, 나머지 식물체 성분함량과는 어떠한 상관도 보이지 않았다.