• Title/Summary/Keyword: 종 동정

Search Result 2,312, Processing Time 0.033 seconds

Volatile Flavor Components in Cooked Black Rice (취반된 흑미의 휘발성 향기 성분)

  • Song, Seon-Joo;Lee, You-Seok;Rhee, Chong-Ouk
    • Korean Journal of Food Science and Technology
    • /
    • v.32 no.5
    • /
    • pp.1015-1021
    • /
    • 2000
  • Volatile flavor components (VFCs) in cooked black rices (Suwon-415 and Chindo) were studied. The major reactions during cooking, which result in aroma volatiles, are the Maillard reaction between amino acids and reducing sugars, and thermal degradation of lipid. Black rices washed with water were soaked in 1.5 folds water and heated at $110^{\circ}C$ in oil bath for 30min. VFCs in cooked black rices were extracted for three hours by SDE and were analyzed by GC and GC/MS. A total of 91, 82 volatiles were identified in Suwon-415 and Chindo black rice, respectively. Suwon-415 was composed of 26 alcohols, 10 aldehydes, 5 acids, 11 esters, 15 ketones, 9 hydrocarbons, 3 furans, 3 nitrogen containing compounds and 9 sulfur containing compounds. Chindo was composed of 28 alcohols, 9 aldehydes, 4 acids, 12 esters, 14 ketones, 5 hydrocarbons, 3 furans, 3 nitrogen containing compounds and 4 sulfur containing compounds.

  • PDF

Changes on the Flavor Components in the Leaf Teas of Lindera obtusiloba BL. by Processing Methods (제조방법에 따른 생강나무(Lindera obtusiloba BL.) 잎차의 향기 성분의 변화)

  • Hwang Kyung-A;Shin Seung-Ryeul;Kim Kwang-Soo
    • Food Science and Preservation
    • /
    • v.12 no.1
    • /
    • pp.68-74
    • /
    • 2005
  • This study was carried out to analyze to the flavor components of Lindera obtusiloba BL leaf teas by different processing methods. 81 kinds of flavor components in the masted tea, 78 in the roasted tea after steaming, 88 in the withered tea, 86 in the fermented tea, 72 in the steamed tea, and 89 in the air dried tea ware by GC/MS. Hydrocarbones in Lindera obtusiloba BL leaf teas were 45 kinds of $\beta-piepne$, and 16 kinds of alcohols such as Linalool, n-octanoal, phenyl acetaldehyde, $(-)-\alpha-terpineol$, elemol, and cholest-5-en-3-ol. 11 kinds of ketones sachas 2-ethyl-2- propyl-cyclohexanone, and 8 kinds of aldehydes sach as phenyl acetaldehyde, tetradecanal, 10-undecanal, 4-Bromo-2-methylbutanal were found. Esters were methyl 9,12,15-octadecatrienate, didodecyl phthalace, 1,2-benzenediccarbaboxy acid-bis (2-ethylhexyl)ester and phenols was 2,6-bis(1,1-dimethylethyl)-4-methyl-phenol.

A Systematic Study on the Errantiate Polychaeta in Korea (한국산 유영류(다모강)의 분류학적 연구)

  • 노분조;이종위
    • Animal Systematics, Evolution and Diversity
    • /
    • v.3 no.1
    • /
    • pp.74-90
    • /
    • 1987
  • 한국산 유영류(다모강)의 분류학적 연구의 일환으로 1965년부터 1986년까지 우리나라의 삼면연안과 도서지방(36개 지역)에서 채집된 표본을 동정 분류하였다. 그 결과 10과 20속 31종 2 종이 밝혀졌으며 그 중 4아종 1 아종(Amphinome rostrata, Haplosyllis tentaculata, Typosyllis aciculata orientalis, Typosyllis variegata, Glycera subaenea)은 한국미기록종으로 판명되었다. 눈썹참갯지렁이 (Perinereis nuntina)는 총 36개 지역 중 11개 지역에서 채집되었으며 , 총 600여 개체중 232 개체가 채집됨으로써 우리나라에 널리 분포해있는 종으로 나타났다. 동정 분류된 표본 중 한국과 일본 해역에만 분포하는 것은 3 종이었다.

  • PDF

Taxonomical Studies on Tintinnids (Protozoa : Ciliata) in Korean Coastal Waters 2. Yngil Bay (한국산 유종섬모충류의 분류학적 연구 2. 영일만)

  • 유광일;김영옥
    • Animal Systematics, Evolution and Diversity
    • /
    • v.6 no.1
    • /
    • pp.87-122
    • /
    • 1990
  • 본 연구는 해양생태계의 저차생산 단계의 생산자로 중요시 되고 있는 유종섬 모충류(Tintinnina )의 분류학적 연구의 일환으로 진해만에 이어 영일만에서 1985년 9월부터 1988년 5월까지 약 4년간에 걸쳐 채집된 시료를 사용하여 유종섬모충류를 동정 분류한 결과, 총 11과 21속 52종이 출현하였다. 이들 52종중 진해만 일대에서 이미 보고된 종을 제외한 27종은 국내에서 처음으로 동정 분류를 하여 이를 한국산 미기록종으로 기재한다.

  • PDF

Bacterial Diversity and Distribution of Cultivable Bacteria Isolated from Dokdo Island (독도 주변의 해수에서 분리한 세균의 다양성과 군집구조 분석)

  • Sung, Hye-Ri;Ghim, Sa-Youl
    • Microbiology and Biotechnology Letters
    • /
    • v.38 no.3
    • /
    • pp.263-272
    • /
    • 2010
  • One hundred sixty three strains showing different colony morphological characteristics on different concentration of marine agar (MA) plates were isolated from ambient seawater near Dokdo island. Bacterial diversity and distributions were studied by phylogenetic analysis of the partial 16S rRNA gene sequences. One hundred sixty three strains were partially sequenced and analyzed phylogenetically. They were composed of 5 phyla, of which gamma-proteobacteria (58%), alpha-proteobacteria (20%), bacteriodetes (16%) were predominant. They were affiliated with 90 species. The 16S rRNA sequence similarity of the isolates was in 93.3 to 100 % range to reported sequence data. Thirty six isolates of among them were assumed to be novel species candidates based on similarity analysis of the 16S rRNA gene sequences. Overall, Proteobacteria and Bacteriodetes of the Dokdo coastal sea water showed a high diversity.

Study of Aspergillus Species from Clinical Specimen Isolate (임상검체에서 분리된 Aspergillus Species의 연구)

  • Lee, Jang Ho;Koo, Bon-Kyung
    • Korean Journal of Clinical Laboratory Science
    • /
    • v.48 no.1
    • /
    • pp.15-21
    • /
    • 2016
  • Aspergillus is the most common opportunistic fungus causing infection. Aspergillus is the most morphologically identified in the laboratory. Recently, molecular genetic methods have been proposed for identification of fungi that unidentified morphologically or identified genus level. Of 475 cases of Aspergillus isolated from clinical specimens, there were Aspergillus fumigatus 257 (54.1%), A. niger 101 (21.3%), A. flavus 43 (9.1%), A. terreus 29 (6.1%), Aspergillus nidulans 2 (0.4%), Aspergillus clavatus 1 (0.2%), and the Aspergillus species 42 (8.8%). Eleven cases of unidentified or identified at the genus level included Aspergillus fumigatus 5, Aspergillus falvus 1, Aspergillus terreus 1, and Aspergillus lentulus 1 was identified in the sequencing of the strain level. It was identified as Aspergillus versicolor 2, and Emericella parvathecia 1. 92.2% of Aspergillus was identified as a possible morphological, 8.8% could not be identified at the species level. Sequence-based molecular analysis using the ITS and D1D2 is considered useful for identification of the species level.

PVA 분해용 균주 분리${\cdot}$동정 및 특성 연구

  • Choe, Gwang-Geun;Sin, Jong-Cheol;Jeon, Hyeon-Hui;Kim, Sang-Yong;Lee, Jin-Won
    • 한국생물공학회:학술대회논문집
    • /
    • 2003.04a
    • /
    • pp.414-418
    • /
    • 2003
  • Through the PVA degrading test, 8 species of microbes were finally isolated, and two species among them were identified. To search PVA degrading rate by using 8 species of microbes, single species of microbes and combination of each species were tested. As a result, single species of microbes showed 96% of PVA degrading rate, and the similar result was obtained by using combination of two species. And 78% of PVA degrading rate was obtained by using enzyme which was secreted from good PVA degrading microbes. As a result of identification, this good PVA degrading microbes were Paenibacillus sp. and Microbacterium barkeri.

  • PDF

Root-knot Nematode Species Distributing in Greenhouses and Their Simple Identification Scheme (시설원예지에 분포하는 뿌리혹선충의 종류 및 간이 동정법)

  • 김동근;이영기;박병용
    • Research in Plant Disease
    • /
    • v.7 no.1
    • /
    • pp.49-55
    • /
    • 2001
  • Species and races of root-knot nematodes in greenhouses in southern Korea were investigated and a simple identification scheme was provided. Among 23 populations of root-knot nematodes, Meloidogyne arenaria race 2 was 59%, M. incognita race 1 was 23%, and an unknown race of M. incognita was 18%. Total length of M. arenaria juveniles was 411㎛(306-503㎛) and that of M. incognita was 384㎛(312-488㎛); however, the ranges of two species were overlapped and could not be used to distinguish the two species. Excretory pore in female head was a consistent character to differentiate M. arenaria and M. incognita.

  • PDF

Two Unreported Glomeromycota Fungi Isolated from Rhizospheres of Smilax china (청미래덩굴의 근권에서 분리된 2종의 Glomeromycota 미기록종)

  • Park, Hyeok;Ka, Kang-Hyeon;Eom, Ahn-Heum
    • The Korean Journal of Mycology
    • /
    • v.47 no.3
    • /
    • pp.275-280
    • /
    • 2019
  • We isolated fungal spores belonging to the phylum Glomeromycota from the rhizospheres of Smilax china, cultured in a greenhouse. We identified the isolated spores using sequence analysis of 18S partial rDNA region, internal transcribed spacer and 28S rDNA regions. We confirmed 2 unreported spores of Glomeromycota fungal species, Diversispora eburnea and Paraglomus laccatum. Here, we described the morphological characteristics and results of phylogenetic analysis of the confirmed species.