• Title/Summary/Keyword: 종조성

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Sterol Compositions in Three Solanaceous Seed Oils (3종(種)의 가지과식물종자유중(料植物種子油中)의 Sterol 조성(組成))

  • Jeong, Tae-Myoung;Yang, Min-Suk;Nah, Hyo-Hwan
    • Applied Biological Chemistry
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    • v.21 no.1
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    • pp.51-57
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    • 1978

  • Sterol compositions of three solanaceous plant seed oils i.e., tobacco(Nicotiana tabacum L.), datura (Datura stramonium L.) and Chinese lycium (Lycium chinense Mill.) were analyzed by thin layer chromatography, gas liquid chromatography and gas liquid chromatography-mass spectrometry. Cholesterol, cholest-7-enol, campesterol, 24-methylenecholesterol, stigmasterol, sitosterol, and 28-isofucosterot were identified in 4-des-methylsterol fraction. 31-Norlanost-8-enol, $4{\alpha}$-methylcholest-8-enol, lophenol, 31-norlanosterol, obtusifoliol, 31-norcycloartenol, cyloeucalenol, gramisterol (24-methylenelophenol), and citrostadienol in 4-monomethylsterol fraction, and lanost-8-enol, cycloartanol, lanosterol, ${\beta}$-amyrin, 24-methylenelanost-8-enol, cycloartenol, lupeol and 24-methylenecycloartanol in 4,4-dimethylsterol fraction were identified respectively.

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Diel and Seasonal Variations in Species Composition of Fishery Resources Collected by a Bag Net off Kogunsan - gundo (서해 고군산군도 연안 낭장망 어획 수산생물의 종조성 및 주야.계절 변동)

  • Hwang, Sun-Do
    • Korean Journal of Ichthyology
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    • v.10 no.2
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    • pp.155-163
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    • 1998

  • To determine diel and seasonal variations in abundance and species composition of fishery resources, day and night samples were collected by a bag net from April through November 1997 off Kogunsan-gundo. A total of 75 species was collected. The total catch was consisted of 71% fish, 18% shrimps, 7% cephalopods and 4% crabs. Pholis fangi and Engraulis japonicus predominated, and accounted for 87% of the total number of fish collected. Most of them were larvae and juvniles. P. fangi and Ammodyres personatus occurred from April to June, and E. japonicus occurred from July to November, suggesting that they used the coastal areas as nursery ground at the different season to avoid competition. Dominant fish larvae and juveniles showed the significant diel difference in catch.

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