• Title, Summary, Keyword: N-containing compound

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Comparison of Internal Quality and Volatile Aromatic Compounds in Several Ligularia spp. (곰취속 몇몇 종의 내적 품질과 휘발성 향기성분과 비교)

  • Baek, Jun Pill;Mele, Mahmuda Akter;Choi, In-Lee;Yoon, Hyuk Sung;Kim, Young Seol;Park, Wan Geun;Kwon, Myoung Cheol;Kang, Ho-Min
    • Journal of Bio-Environment Control
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    • v.24 no.1
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    • pp.21-26
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    • 2015
  • This study was conducted to compare the aromatic compounds and the internal quality such as total phenolic contents, DPPH activity, and vitamin C contents in two new forma (red type and dalgom) and gom-chwi (Ligularia fischeri). Total phenolic contents were indicated 137.29mg/100g fresh wt. in gom-chwi, 158.40mg/100g fresh wt. in red type, and 180.82mg/100g fresh wt. in dalgom, red type and dalgom had higher contents than gom-chwi. DPPH activities were appeared similar result in gom-chwi (74.45%) and red type (75.59%), and dalgom (86.26%) had better than others. In vitamin C contents, gom-chwi and red variety had shown very closed results but dalgom had best result (1.81mg/100g fresh wt.). Essential oil contents of red type (0.164% of fresh wt.) and dalgom (0.290% of fresh wt.) had higher contents than gom-chwi (0.060%). Analysis of major components of essential oil by GC/MSD, identified 43 compounds in gom-chwi, 44 compounds in red type, and 31 compounds in dalgom. N-containing compound only detected in dalgom. Comparison of six aromatic compounds for fragrance (a-pinene, ${\beta}$-pinene, ${\beta}$-phellandrene, a-phellandrene, 3-carene, and limonene) was indicated red type had higher contents and dalgom had lower contents than gom-chwi. Dalgom had higher contents of total phenolic, DPPH activity, vitamin C, and essential oil than red type and gom-chwi. This result had shown the dalgom had better characters for new cultivar.

32P-postlabeling Analysis of 7H-Dibenzo [c,g] carbazole and Dibenz [a,j] acridine DNA Adduct in Mice (7H-Dibenzo [c,g] carbazole과 Dibenz[a,j] acridine에 의한 DNA adduct의 32P-postlabeling 분석)

  • Roh, JH;Moon, YH;Warshawsk, D.;Talaska, G.
    • Journal of Korean Society of Occupational and Environmental Hygiene
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    • v.3 no.1
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    • pp.14-21
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    • 1993
  • N-Heterocyclic aromatics (NHA) are widely occurring environmental pollutants formed during the pyrolysis of nitrogen-containing organic chemicals. NAH are found in significant amounts in tobacco condensates, synthetic fuels, polluted river sediment, and effluents from the heating of coal. Following topical application 7H-dibenzo[c, g]carbazole (DBC) induces cancer in liver as well as skin, indicating that dermal exposure can lead to systemic effect. DBC and dibenz[a,j]acridine (DBA) are examples of NHA. The potency of many carcinogenic compounds is related, at least in part, to the efficiency of their biological activation. We undertook studies to determine which initial metabolites lead to the formation of high levels of carcinogen-DNA adducts in vivo. DBC and DBA's, DBA, trans-DBA-1,2-dihydrodiol (DBA-1,2-DHD), trans-DBA-3,4-dihydrodiol (DBA-3,4-DHD), and trans-DBA-5,6-dihydrodiol (DBA-5,6-DHD), were applied to the skin of mice. There were six adducts that were related to DBC application. These addusts were seen in the target organ, liver at high levels, but at very low levels in non-target organs, skin, lung and kidney. In skin, DBA produced two distinct adducts. The same two adducts were seen when DBA-3,4-DHD was applied. In addition the total adduct level elicited by DBA-3,4-DHD higher than that of parent compound. Two adducts were seen when DBA-5,6-DHD was applied, but these were very different from adducts seen with DBA. These results suggested that activation of DBA to DNA-binding compounds in skin includes initial formation of DBA-3,4-DHD.

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Comparison of Fragrance and Chemical Composition of Essential Oils in Gom-chewi (Ligularia fischeri) and Handaeri Gom-chewi (Ligularia fischeri var. spicifoprmis) (곰취(Ligularia fischeri)와 한대리곰취(Ligularia fischeri var. spicifoprmis) 정유의 향취 및 향기성분 비교)

  • Yeon, Bo-Ram;Cho, Hae Me;Yun, Mi Sun;Jhoo, Jin-Woo;Jung, Ji Wook;Park, Yu Hwa;Kim, Songmun
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.41 no.12
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    • pp.1758-1763
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    • 2012
  • This study was conducted to compare fragrance and volatile chemicals of essential oils in Gom-chewi (Ligularia fischeri) and Handaeri Gom-chewi (Ligularia fischeri var. spicifoprmis). Essential oils were extracted by steam distillation of leaves of Gom-chewi (GC) and Handaeri Gom-chewi (HGC), after which samples were collected by solid-phase micro extraction and the compositions of the essential oils were analyzed by gas chromatography-mass spectrometry (GC-MS). The yields of the essential oils in GC and HGC were 0.12% and 0.04%, respectively, and the threshold levels of the essential oils in GC and HGC were 0.01% and 0.1%, respectively. There were 19 constituents of the essential oil of Gom-chewi: 14 carbohydrates, 4 alcohols, and 1 acetate, and the major constituents were L-${\beta}$-pinene (36.02%), D-limonene (25.64%), ${\alpha}$-pinene (24.85%) and ${\beta}$-phellandrene (5.39%). In the essential oil of HGC, 25 constituents were identified: 17 carbohydrates, 4 alcohols, 3 acetates, and 1 N-containing compound, and the major constituents of HGC were D-limonene (39.74%), L-${\beta}$-pinene (35.43%) and ${\alpha}$-pinene (11.94%). The minor constituents of HGC were ${\rho}$-cymene, ${\gamma}$-muurolene, ${\gamma}$-cadinene, germacrene D, ingol 12-acetate and butyl 9,12,15-octadecatriene and nimorazole were not identified in the GC essential oil. Overall, the results showed that the fragrance and chemical compositions of essential oils in GC and HGC differed, suggesting that both essential oils could be used for the development of perfumery products.