• Preventive Nutrition and Food Science
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• 제8권4호
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• pp.365-371
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• 2003

The potential of seven flavonoid glycosides to induce quinone reductase (QR), an anticarcinogenic marker enzyme, in murine hepatoma cells (hepalc1c7) and its mutant cells (BPRc1) was evaluated. Among test compounds, kaempferol-3-O-glucoside, luteolin-6-c-glucoside, and quercetin-3-O-glucoside (Q-3-G) induced QR in hepalc1c7 cells in a dose-dependent manner. However, in BPRc1 cells lacking arylhydrocarbon receptor nuclear translocator (ARNT), only Q-3-G caused a significant induction of quinone reductase at the concentration range of 0.5 to 8 ug/mL, suggesting that it is a monofunctional inducer. Q-3-G induced not only phase 2 enzymes, including QR and glutathione-S-transferase, but also nitroblue tetrazolium reduction activity in HL-60 cells, a biochemical marker for cell differentiation promoting agents. In conclusion, Q-3-G merits further study to evaluate its cancer chemopreventive potential.

• 생약학회지
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• 제38권2호통권149호
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• pp.181-186
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• 2007

Seven phenolic compounds, scopoletin (1), caffeic acid methyl ester (2), apigenin 7-O-${\alpha}$-L-rhamnosyl-(1${\rightarrow}$6)-O-${\alpha}$-D-glucoside (3), isorhamnetin 7-O-${\alpha}$-D-glucoside (4), isorhamnetin 3-O-${\alpha}$-D-glucoside (5), luteolin (6), and quercetin 3-methyl ether (7) were isolated from the methanol extract of the flowers of S. excelsus. Their structures were established by chemical and spectroscopic methods. The isolated compounds were tested for their cytotoxicity against four human cancer cell lines in vitro using a SRB method. The compounds 4 and 7 showed moderate cytotoxicity with ED$_{50}$ values ranging from 1.59 to 13.14${\mu}$g/ml.

• 한국식품영양과학회지
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• 제32권5호
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• pp.733-738
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• 2003

홍화의 식품재로로서 이용성을 높이고자 홍화의 부위별 성분분석 및 DPPH radical소거 활성을 조사하였다. 단백질은 어린싹 부위에 28.39%, 지방은 씨부위에 20.47%로 많이 함유되어 있었다. Glucose는 어린싹에 1253.6 mg%, fructose는 어린싹에 970.7 mg%, sucrose는 꽃봉오리 부위에 912.0 mg%로 많이 함유되어 있었다. Succinic acid는 꽃잎부위에 2795.3 mg%, malic acid는 잎과 어린싹 부위에 각각 2054.8 mg%와 934.2 mg%로 많이 함유하고 있었다. 무기질로는 K이 잎과 어린싹 부위에 각각 2826.8 mg%와 1999.8 mg%, Ca 또한 잎과 어린싹 부위에 각각 2613.6 mg%와 1160.9 mg%로 많이 함유하고 있었다. Llinoleic acid는 어린싹과 씨부위에 각각 80.01%와 78.27%로 가장 많이 함유하고 있었다. 총페놀함량은 꽃잎, 어린싹, 잎 부위에 각각 5.8%, 4.4% 및 2.5%, 총플라보노이드 함량은 꽃잎, 어린싹, 잎 부위에 각각 4.7%, 6.5%및 2.0%로 많이 함유하고 있었다. Serotonin (5-hydroxytryptamine, 5-HT)화합물인 serotonin-I 은 홍화씨 부위에 147.7 mg%, serotonin-II또한 홍화씨 부위에 155.4mg%를 함유하고 있었고, flavonoid화합물인 acacetin도 홍화씨 부위에 116.5 mg%를 함유하고 있었다. 또한, luteolin은 어린싹 부위에 388.3 mg%, luteolin 7-g1ucoside는 잎 부위에 692.3 mg%로 많이 함유하고 있었다. DPPH radical 소거활성은 꽃잎과 잎의 80% 에탄올 추출물이 114.2%와 113.6%의 높은 활성을 나타내어 기존의 합성항산화제인 BHA 100ppm 농도의 88.05%의 활성보다 높은 항산화 활성을 가지고 있음을 확인하였다.

• 분석과학
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• 제32권4호
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• pp.139-146
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• 2019

A simple and reliable analytical method based on high-performance liquid chromatography-ultraviolet detection was established for the analysis of the flowers of Chrysanthemum morifolium (CM). Luteolin-7-O-glucoside (LU7G) was chosen as a target analyte considering its content, availability, and ease of analysis. Chromatographic separation of LU7G was achieved using a Phenomenex Gemini $C_{18}$ column ($250{\times}4.6mm$, $5{\mu}m$) run with a mobile phase consisting of 0.5 % acetic acid in water and 0.5 % acetic acid in acetonitrile at a flow rate of $1.0mL\;min^{-1}$. The detection wavelength and column temperature were set at 350 nm and $40^{\circ}C$, respectively. Method validation was performed according to the AOAC guidelines and the method was specific, linear ($R^2=0.9991$ for $50-300{\mu}g\;mL^{-1}$), precise (${\leq}3.91%$RSD), and accurate (100.1-105.7 %). The limits of detection and quantification were 3.62 and $10.96{\mu}g\;mL^{-1}$, respectively. The established method was successfully applied to determine the contents of LU7G in various batches of bulk CM extracts and labscale CM extract. The developed method is a readily applicable method for the quality assessment of CM and its related products.

• Plant Breeding and Biotechnology
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• 제6권4호
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• pp.404-412
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• 2018

The influenza neuraminidase (NA, E.C. 3.2.1.18), an antiviral, has been the target of high pharmaceutical companies due to its essential role in viral replication cycle. Perilla frutescens (P. frutescens) is used in traditional Chinese medicine for various diseases, such as cold due to wind-cold, headache and cough. In this context, four major polyphenolic compounds including rosmarinic acid-3-O-glucoside (1), rosmarinic acid (2), luteolin (3), and apigenin (4) isolated from P. frutescens were evaluated for their inhibitory effect on recombinant virus H1N1 neuraminidase (rvH1N1 NA). Among the test compounds, rosmarinic acid and luteolin inhibited the rvH1N1 NA with an $IC_{50}$ of 46.7 and $8.4{\mu}M$, respectively. The inhibition kinetics analyzed by the Dixon plots indicated that rosmarinic acid and luteolin were noncompetitive inhibitors and that the inhibition constant, $K_I$, was established as 43.9 and $14.3{\mu}M$, respectively. In addition, 578 genetically diverse accessions and 39 cultivars of P. frutescens were analyzed using HPLC to characterize the diversity of polyphenolic composition and concentration. The individual and total compositions exhibited significant difference (P < 0.05), especially rosmarinic acid which was detected as the predominant metabolite in all accessions (58.8%) and cultivars (62.8%). Yeupsil and Sangback cultivars exhibited the highest rosmarinic acid ($3,393.5{\mu}g/g$) and luteolin ($383.3{\mu}g/g$) content respectively. YCPL177-2 with the high concentration ($889.8{\mu}g/g$) of luteolin may be used as a genetic resource for breeding elite cultivars.