한국약용작물학회지 (Korean Journal of Medicinal Crop Science)

  • 제11권5호
  • /
  • Pages.385-391
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  • 2003
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  • 1225-9306(pISSN)
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  • 2288-0186(eISSN)
한국약용작물학회 (The Korean Society of Medicinal Crop Science)
권호 표지

생약추출물이 Aspergillus parasiticus Aflatoxin $B_1$ 생성에 미치는 영향

Effects of Some Herbal Extracts on Aflatoxin $B_1$ Production from Aspergillus parasiticus

  • 정상진 (청주대학교 유전공학과)
  • 발행 : 2003.12.31
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초록

본 연구에서 8종의 생약 추출물이 A. parasiticus의 배양시 aflatoxin $B_1$ 생성에 미치는 효과를 조사하였다. 배지의 pH는 배양 3일 후에 모든 생약 추출물이 pH 4 이하를 나타냈으며 구기자, 오매, 계피, 두충은 배양 6일에 다시 pH 4 이상으로 상승하였고 이중 대추가 배양 기간 중 가장 낮은 pH를 나타냈다. 균체 생성량은 모든 실험군이 대조군보다 높았으며 갈근, 두충, 오미자, 대추, 오매,구기자, 목과의 순으로 나타났다. 이중 갈근이 최대 생성량을 나타냈으며 목과가 가장 낮은 생성량을 나타냈다. Aflatoxin $B_1$은 갈근과 대추 추출물을 제외한 모든 실험군에서 생성이 억제되었다. 특히 계피, 오매, 두충 구기자, 오미자 추출물 에서 aflatoxin $B_1$ 생성이 현저히 저하되었으며 계피가 가장 큰 억제 효과를 나타냈다. 균체량이 많이 생성되면 aflatoxin $B_1$ 생성이 적어지고 균체량이 적게 생성되면 aflatoxin $B_1$의 생성이 많아졌다. Aspergillus parasiticus에 의해 aflatoxin $B_1$을 가장 적게 생성하는 계피와 가장 많이 생성하는 갈근 추출물의 총단백질 생성량은 계피는 3일째 (34.5%), 갈근 ext ract는 4일째 (36.4%) 총단백질의 함량이 최대가 되어 균체 내의 총단백질의 함량은 계피와 갈근 추출물을 첨가한 시험군이 게조군의 총단백질 함량 (32.7%)보다 약간 많았으며 aflatoxin $B_1$ 생성 및 축적이 최대가 되는 시기는 총단백질량이 최대가 되는 시기보다 대체로 1일 정도 늦게 나타났다.

The influences of the extracts from Cinnamomi Cortex, Eucommiae Cortex, Puerariae Radix, Lycii Fructus, Zizyphi Fructus, Schisandrae Fructus, Mume Fructus, Chaenomelis Fructus on mycelial growth and aflatoxin $B_1$ production from Aspergillus parasiticus were analyzed. The pH of the culture media were reduced to below pH 4 by all the herbal extracts after 3 days incubation. However, the pH of the culture media increased above pH 6 after 6 days incubation using the extracts from Cinnamomi Cortex, Eucommiae Cortex, Puerariae Radix and Lycii Fructus. The mycelial growth of A. parasiticus was increased over the amount of the control. Puerariae Radix produced the largest amount of mycelial growth and Chaenomelis Fructus produced the smallest amount of mycelial growth. The productions of aflatoxin $B_1$ from A. parasticus culture were increased by the extracts of Puerariae Radix and Zizyphi Fructus, while inhibited by the extracts of Cinnamomi Cortex, Eucommiae Cortex, Lycii Fructus, Schisandrae Fructus, Mume Fructus and Chaenomelis Fructus. In particular, the extracts of Cinnamomi Cortex, Lycii Fructus and Schisandrae Fructus almost inhibited the production of aflatoxin $B_1$. The production of the total protein from Cinnamomi Cortex, which produced much less aflatoxin $B_1$, and Puerariae Radix, which produced a great deal of aflatoxin $B_1$ from A parasticus were slightly higher than the production of the total protein of the control medium.

키워드

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