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基于组效关系的姜黄挥发油抗肿瘤活性成分辨识研究 总被引:1,自引:0,他引:1
基于GC-MS分析,建立了姜黄挥发油的化学成分与其抑制人宫颈癌Hela细胞作用的组效关系模型,寻找与药效显著相关的活性成分。采用水蒸汽蒸馏法提取得到31批姜黄挥发油,提取率在1.63%~4.52%之间;采用GC-MS联用仪建立了31批姜黄挥发油的指纹图谱,确定了20个特征峰,以特征峰的相对峰面积(各峰面积与内标正十三烷的峰面积之比)来表征其相对含量;MTT法测定姜黄挥发油抑制人宫颈癌Hela细胞活性,以抑制率为评价指标;利用Simca-p11.5软件的正交投影偏最小二乘法(Orthogonal Partial leastsquares,OPLS)和SPSS软件的双变量相关(bivariate)分析,研究特征峰与药效的相关性,根据S-载荷图、变异权重参数值(Variable importance in projection,VIP)和皮尔逊(Pearson)相关系数来辨识显著活性成分。结果表明,11,15,7,19,3,6,12,14,9号等9个特征峰与姜黄挥发油抑制Hela细胞活性显著相关,除19号峰尚未定性外,11,15,7,3,6,12,14和9号峰对应的成分分别为芳姜黄酮、β-姜黄酮、姜烯、β-榄香烯、α-姜黄烯、α-姜黄酮、吉马酮和β-倍半水芹烯。 相似文献
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湘西金银花挥发油化学成分研究 总被引:14,自引:0,他引:14
采用GC/MS/DS联用仪对湘西金角花挥发油中的化学成分进行了研究。并鉴定出40种组分。其主要成分为:芳樟醇、环氧芳樟醇、α-萜品醇、顺-3-已 烯醇、顺芷酸-3、己烯酯、香叶醇、氧化芳樟醇、法尼醇、顺-苯酮、法尼烯、大根香叶烯、橙花醇等。其中芳樟醇含量最高,约占精油总量的20%。 相似文献
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气相色谱-质谱技术分析姜油树脂中的挥发性及非挥发性成分 总被引:3,自引:0,他引:3
用超临界CO2萃取生姜根茎中的姜油树脂,并用气相色谱-质谱联用技术对其进行了成分分析。从姜油树脂中分析出77种化合物,其中挥发油成分50种,主要是α-姜烯(22.29%)、 β-倍半水芹烯(8.58%)、α-法尼烯(3.93%)、 β-没药烯(3.87%)和α-姜黄烯(2.63%)等倍半萜类化合物;姜辣素成分27种,主要成分为6-姜酚(9.38%)、6-姜烯酚(7.59%)和分析过程中由姜酚类或姜烯酚类化合物受热分解而形成的姜油酮(9.24%)。在姜辣素成分中,6-异姜酚、(Z)-10-异姜烯酚和(E)-10-异姜烯酚3种化合物是新发现的未见报道的化合物。实验中对这3种新化合物进行了质谱裂解分析。 相似文献
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姜科姜黄属植物有效成分的研究 总被引:13,自引:0,他引:13
研究不同产地姜科姜黄属植物挥发油的化学成分,了解不同产地姜科姜黄属植物挥发性成分的差别,为控制其药材质量提供理论依据。采用水蒸气蒸馏法提取不同产地姜科姜黄属植物的挥发油,用气相色谱—质谱联用仪对其进行分离测定,结合计算机检索对分离的化合物进行结构鉴定,应用色谱峰面积归一化法测定各成分的相对百分含量。结果发现,不同产地姜科姜黄属植物的水蒸气蒸馏提取物得率在0.20%~2.13%之间,分别鉴定出24~40个化学成分。不同品种、不同产地姜科姜黄属植物的挥发油含量和其所含成分有较大差别,文献报道的某些有效成分如莪术酮、莪术二酮、莪术醇和表莪术酮在某些供试品中未检测到。实验中10个供试品药材中挥发性成分主要为单萜类及倍半萜类化合物及其衍生物,倍半萜类化合物的百分含量(44.57%~88.65%)明显高于单萜类化合物的百分含量(1.63%~26.69%)。 相似文献
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研究香青花与叶挥发油的化学成分。采用同时蒸馏萃取法(SDE)提取香青花与叶中的挥发油,使用气相色谱-质谱联用技术(GC-MS)获得总离子流图,各色谱峰相应的质谱图经过NIST11.L标准谱库检索,辅助保留指数比对定性,并采用峰面积归一化法进行定量分析,计算各成分的相对百分含量。从香青花与叶挥发油中共鉴定出41种物质,相同成分有15种,花与叶挥发油的化学成分含量差异较大,其中花挥发油中主要成分为α-葎草烯(13.46%)、环氧化葎草烯II(8.97%)、Ar-姜黄烯(8.50%)、δ-杜松烯(6.99%)等;叶挥发油中主要成分为α-葎草烯(17.47%)、α-蒎烯(15.17%)、Ar-姜黄烯(8.27%)、(E)-石竹烯(6.06%)等。采用GC-MS法结合保留指数鉴别香青花与叶挥发油中的同分异构体,提高了药用植物不同部位挥发油成分定性的准确性,为香青药用价值的开发和应用提供了参考。 相似文献
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采用水蒸气蒸馏法提取,运用气相色谱-质谱联用法对香叶蒿挥发油化学成分进行了分析,用气相色谱面积归一化法测定了各成分的质量分数。结果鉴定出72个化合物,主要成分为樟脑(33.136%),桉树脑(23.419%),6-甲基-2-乙烯基-1,3-庚二烯醛(8.414%),孟烯醇(3.819%),桥环萜烯酮(3.276%),莰烯(2.454%),1R-α-蒎烯(1.917%),去甲基丁香酚(1.550%),α-松油醇(1.449%),冰片(1.674%),β-香叶烯(1.165%),百里香酚(0.329%)等。研究表明紫花冷蒿挥发油主要为单萜及其氧化衍生物。其挥发油成分的研究为挖掘其药用及食品香料工业的应用价值提供了科学依据。 相似文献
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目的:通过测定缅甸进口姜黄中26种无机元素,并对进口姜黄中重金属含量进行风险评价,为缅甸进口姜黄的质量控制奠定基础。方法:采用微波消解ICP-MS法对24批来自缅甸地区的姜黄进行26种无机元素的测定,通过靶标危害系数(THQ)和总危害指数(HI)对Pb、Cd、Cu 3种元素进行非致癌风险评价,用终生致癌风险(R)对As进行致癌风险评价。结果:结果表明,缅甸进口姜黄中含有24种无机元素,其中K、Na、Mg、Ca 4种营养元素含量占比24种无机元素的92.39%。缅甸姜黄中均未检出Sn、Hg 2种金属元素,Pb、Cd、As、Cu 、Hg5种重金属元素含量均符合2020版中国药典限定值。经过缅甸姜黄中Cu、Pb、Cd 3种重金属元素健康风险评价,THQ和HI均小于1,表明人体通过缅甸姜黄摄入的Cu、Pb、Cd不会对人体造成非致癌伤害。经过对姜黄中As的致癌健康风险评价,致癌风险R为7.72 x10-6,低于世界卫生组织建议的致癌风险值(1.00 x 10-5),通过缅甸姜黄摄入的总As不存在致癌风险。结论:总体而言,缅甸进口姜黄重金属元素保持在较好水平。 相似文献
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The sesquiterpenoids are one of major groups of antioxidants in Curcuma besides curcuminoids. However, the real substances contributing to the antioxidant activity are still unknown. In this paper, the antioxidant activity of sesquiterpenoids in four species and two essential oils from Curcuma genus was determined and compared based on TLC separation and DPPH bioautography assay. Their antioxidant capacities were quantitatively evaluated using densitometry with detection at 530 nm (λ(reference )= 800 nm) using vitamin C as reference. The results showed that Curcuma longa rhizomes had the highest antioxidant capacity while C. phaeocaulis presented the lowest one among the four species of Curcuma. Moreover, essential oil of C. wenyujin showed higher antioxidant potential than that of C. longa. The main TLC bands with antioxidant activity of the four species of Curcuma were collected and characterized using GC-MS, and thus curzerene, furanodiene, α-turmerone, β-turmerone and β-sesquiphellandrene were determined as major sesquiterpenoids with antioxidant activity in Curcuma. 相似文献
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In present work,the volatile constituents of Curcuma longa L.,A.lancea (Thunb.) DC.,Foeniculum vulgare Mill,and Cinnamomun cassia Presl.have been analyzed by flash distillation/capillary gas chro-matography/mass spectrometry.The results are consistent with those obtained by conventional steam distillation extraction method.The optimum condition of flash distillation has been studied.The experimental results showed that this new technique proved to be a simple,rapid and efficient tool for microanalysis of volatile constituents of Chinese medicinal herbs. 相似文献
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闪蒸-毛细管气相色谱-质谱法分析中草药的挥发性成分 总被引:12,自引:0,他引:12
本文采用闪蒸-毛细管气相色谱-质谱法对姜黄、茅苍术、小茴香、肉桂的主要挥发性组分进行了分析,其结果与常规分析相符,对中草药闪蒸分析的条件进行了探讨,实验结果证明,闪蒸分析法是研究中草药挥发性成分的一种简便、快速、有效的微量分析方法。 相似文献
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H Inagawa T Nishizawa D Tsukioka T Suda Y Chiba T Okutomi A Morikawa G I Soma D Mizuno 《Chemical & pharmaceutical bulletin》1992,40(4):994-997
In order to seek a macrophage-activating substance, lipopolysaccharide (LPS) of plant origin other than that of wheat flour was surveyed. A large amount of LPS (10-100 micrograms/g) was detected in Laminaria japonica (kelp), Curcuma longa (turmeric), Undaria pinnatifida and other substances. Since concomitant bacteria possibly existing in root of farm products can be considered to contribute to LPS of plant origin, a count was taken of bacterial cells both dead and alive. This count revealed that some LPS were derived from concomitant bacteria which had probably come from root. Few concomitant bacterial cells were found in seaweed, while stem-root contained enough bacterial cells. Three predominant bacteria have been isolated and identified; Pantoea agglomerans, Enterobacter cloacae, and Serratia ficaria. These LPSs were purified and their chemical compositions were examined. They are similar to that of Escherichia coli except that their molecular sizes are smaller. Since LPS is non-toxic when taken orally or percutaneously, these LPSs may also be advantageous in the cure of intractable diseases. 相似文献
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Chemical composition and antibacterial activity of the essential oil from Pyrrosia tonkinensis (Giesenhagen) Ching 总被引:1,自引:0,他引:1
The present study aimed to analyse the chemical components of the essential oil from Pyrrosia tonkinensis by GC-MS and evaluate the in vitro antibacterial activity. Twenty-eight compounds, representing 88.1% of the total essential oil, were identified and the major volatile components were trans-2-hexenal (22.1%), followed by nonanal (12.8%), limonene (9.6%), phytol (8.4%), 1-hexanol (3.8%), 2-furancarboxaldehyde (3.5%) and heptanal (3.1%). The antibacterial assays showed that the essential oil of P. tonkinensis had good antibacterial activities against all the tested microorganisms. This paper first reported the chemical composition and antimicrobial activity of the essential oil from P. tonkinensis. 相似文献
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Chemical composition and antibacterial activity of the essential oil of Moroccan Juniperus phoenicea
Fouad B Abderrahmane R Youssef A Rajae H El Fels MA 《Natural product communications》2011,6(10):1515-1518
The antibacterial activity of the essential oil from leaves of Juniperus phoenicea (Cupressaceae) and its chemical constituents were investigated in this study. The essential oil was obtained by hydro-distillation and analyzed by gas chromatography equipped with a flame ionisation detector (GC-FID), and gas chromatography coupled to a mass spectrometer (GC-MS). Sixty-three volatile compounds were identified representing 52 to 92% of the total oil compositions. The main monoterpenes were a-pinene (26.7-78.7%) and 6-3carene (7.6-15.4%). The antibacterial activity of J. phoenicea essential oil, when tested against both Gram-positive and Gram-negative bacteria, showed high activity against all bacteria tested, except Pseudomonas. 相似文献
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蓝布正挥发油化学成分的GC-MS分析 总被引:7,自引:0,他引:7
研究贵州产蓝布正(Herba Gei)挥发油的化学成分,采用水蒸气蒸馏法提取蓝布正挥发性成分,用气相色谱-质谱进行分离测定,结合计算机检索技术对分离的化合物进行鉴定,应用色谱峰面积归一化法测定各成分的相对含量;水蒸气蒸馏提取物得率是0.10%,共分离出103种成分,鉴定出40个化学成分,其主要成分为脂肪酸及其甲酯类化合物、萜烯类及其含氧衍生物等,主要有棕榈酸(13.2%)、11,14,17-二十碳三烯酸甲酯(10.4%)、亚油酸(8.6%)、石竹烯氧化物(3.9%)、丁子香酚(3.4%)和反式-植醇(3.2%)等。 相似文献