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Chemical profiling of bioactive compounds in the methanolic extract of wild leaf and callus of Vitex negundo using gas chromatographymass spectrometry
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作者 Gunjan Garg Alok Bharadwaj +1 位作者 Shweta Chaudhary Veena Gupta 《World Journal of Experimental Medicine》 2024年第1期78-87,共10页
BACKGROUND The investigation of plant-based therapeutic agents in medicinal plants has revealed their presence in the extracts and provides the vision to formulate novel techniques for drug therapy.Vitex negundo(V.neg... BACKGROUND The investigation of plant-based therapeutic agents in medicinal plants has revealed their presence in the extracts and provides the vision to formulate novel techniques for drug therapy.Vitex negundo(V.negundo),a perennial herb belonging to the Varbanaceae family,is extensively used in conventional medication.AIM To determine the existence of therapeutic components in leaf and callus extracts from wild V.negundo plants using gas chromatography-mass spectrometry(GCMS).METHODS In this study,we conducted GC-MS on wild plant leaf extracts and correlated the presence of constituents with those in callus extracts.Various growth regulators such as 6-benzylaminopurine(BAP),2,4-dichlorophenoxyacetic acid(2,4-D),α-naphthylacetic acid(NAA),and di-phenylurea(DPU)were added to plant leaves and in-vitro callus and grown on MS medium.RESULTS The results clearly indicated that the addition of BAP(2.0 mg/L),2,4-D(0.2 mg/mL),DPU(2.0 mg/L)and 2,4-D(0.2 mg/mL)in MS medium resulted in rapid callus development.The plant profile of Vitex extracts by GC-MS analysis showed that 24,10,and 14 bioactive constituents were detected in the methanolic extract of leaf,green callus and the methanolic extract of white loose callus,respectively.CONCLUSION Octadecadienoic acid,hexadecanoic acid and methyl ester were the major constituents in the leaf and callus methanolic extract.Octadecadienoic acid was the most common constituent in all samples.The maximum concentration of octadecadienoic acid in leaves,green callus and white loose callus was 21.93%,47.79%and 40.38%,respectively.These findings demonstrate that the concentration of octadecadienoic acid doubles in-vitro compared to in-vivo.In addition to octadecadienoic acid;butyric acid,benzene,1-methoxy-4-(1-propenyl),dospan,tridecanedialdehyde,methylcyclohexenylbutanol,chlorpyrifos,n-secondary terpene diester,anflunine and other important active compounds were also detected.All these components were only available in callus formed in-vitro.This study showed that the callus contained additional botanical characteristics compared with wild plants.Due to the presence of numerous bioactive compounds,the medical use of Vitex for various diseases has been accepted and the plant is considered an important source of therapeutics for research and development. 展开更多
关键词 Leaf extracts Callus extracts Methanolic extract Octadecadienoic acid Hexadecanoic acid Methyl ester gas chromatography-mass spectrometry analysis
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Comparative analysis of essential oils found in Rhizomes Curcumae and Radix Curcumae by gas chromatography-mass spectrometry 被引量:5
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作者 Di-Ya Lu Yan Cao +5 位作者 Ling Li Zhen-Yu Zhu Xin Dong Hai Zhang Yi-Feng Chai Zi-Yang Lou 《Journal of Pharmaceutical Analysis》 SCIE CAS 2011年第3期203-207,共5页
A comparison of the volatile compounds in Rhizomes Curcumae (Ezhu) and Radix Curcumae (Yujin) was undertaken using gas chromatography mass spectrometi-y (GC-MS). Ultrasonic extraction and GC-MS methods were deve... A comparison of the volatile compounds in Rhizomes Curcumae (Ezhu) and Radix Curcumae (Yujin) was undertaken using gas chromatography mass spectrometi-y (GC-MS). Ultrasonic extraction and GC-MS methods were developed for the simultaneous determination of five sesquiterpenes, namely, α-pinene, β-elemene, curcumol, germacrone and curdione, in Ezhu and Yunjin. Good linearity (r〉0.999) and high inter-day precision were observed over the investigated concentration ranges. The validated method was successfully used for the simultaneous determination of five sesquiterpenes in Ezhu and Yujin. The quantitative method can be effectively used to evaluate and monitor the quality of Chinese curcuma in clinical use. 展开更多
关键词 gas chromatography-mass spectrometry Rhizomes Curcumae Radix Curcumae Volatile compounds Quality control
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Degradation products of different water content sevoflurane in carbon dioxide absorbents by gas chromatography-mass spectrometry analysis 被引量:5
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作者 LI Yue LI Yi-cong +5 位作者 ZHANG Yi-nan LIU Shu-jie ZHOU Yan-mei WANG Chang-song GONG Yu-lei LI En-you 《Chinese Medical Journal》 SCIE CAS CSCD 2011年第7期1050-1054,共5页
Background Sevoflurane is currently used as a volatile inhalation anesthetic with many clinical advantages. A representative degradation product, compound A, was quantitatively measured to investigate whether there ar... Background Sevoflurane is currently used as a volatile inhalation anesthetic with many clinical advantages. A representative degradation product, compound A, was quantitatively measured to investigate whether there are different reactions between two kinds of water content sevoflurane formulations with different carbon dioxide (CO2) absorbents. 展开更多
关键词 sevoflurane water content carbon dioxide absorbents compound A gas chromatography-mass spectrometry
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Ultrasonic Nebulization Extraction Coupled with Gas Chromatography-Mass Spectrometry for Analysis of Volatile Components in Traditional Chinese Patent Medicine 被引量:1
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作者 LIANG Yue WANG Lu WANG Zi-ming YU Cui ZHANG Han-qi SHI Yu-hua 《Chemical Research in Chinese Universities》 SCIE CAS CSCD 2011年第2期203-207,共5页
The ultrasonic nebulization extraction(UNE) was developed and applied to the extraction of volatile components from traditional Chinese patent medicine Xiaoyao Pills. Several parameters of ultrasonic nebulization ex... The ultrasonic nebulization extraction(UNE) was developed and applied to the extraction of volatile components from traditional Chinese patent medicine Xiaoyao Pills. Several parameters of ultrasonic nebulization extraction including the sample particle size, solvent volume, extraction time and ultrasonic power were studied and selected. As a result, 2.4 g of sample with particle size of 80 mesh was extracted with 15 mL of n-hexane for 20 min at an ultrasonic power of 35 W. The volatile components were analyzed by gas chromatography-mass spectrometry (GC-MS) under the optimal conditions and 57 compounds were identified. The precision, repeatability and stability of the proposed method were also studied. Compared with ultrasonic-assisted extraction(UAE) and hydrodistillation(HD) extraction, the proposed method is more efficient, faster and easier to be operated at room temperature with smaller sample and energy consumption. It is suggested that the ultrasonic nebulization extraction can be used as a novel alternative method for the extraction of volatile components from traditional Chinese patent medicine. 展开更多
关键词 Ultrasonic nebulization extraction gas chromatography-mass spectrometry Volatile component Traditional Chinese patent medicine
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Mechanism of Cinnamomum camphora essential oil for analgesia based on gas chromatography-mass spectrometry integrated network pharmacology
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作者 Nianyun Yang 《Asian Journal of Traditional Medicines》 2023年第3期87-97,共11页
This study aims to explore the analgesic ingredients and mechanism of Cinnamomum camphora essential oil(CCEO).The constituents in CCEO were characterized qualitatively by gas chromatography-mass spectrometry.Targets r... This study aims to explore the analgesic ingredients and mechanism of Cinnamomum camphora essential oil(CCEO).The constituents in CCEO were characterized qualitatively by gas chromatography-mass spectrometry.Targets related to active ingredients were collected by PubChem and Swiss Target Prediction.Targets related to pain were screened by TTD and OMIM database,and compound-target network was established by Cytoscape software.Gene ontology(GO)function and Kyoto encyclopedia of genes and genomes(KEGG)pathway enrichment analysis of targets were carried out by DAVID database.Protein-protein interaction(PPI)network was established and analyzed by STRING database.Molecular docking method was used to verify the interaction between main components and relevant core targets.A total of 13 compounds were identified in CCEO,and 58 related targets were predicted.GO function enrichment analysis revealed that the selected targets were mainly involved in biological processes such as chemical synaptic transmission and molecular function such as neurotransmitter receptor activity;24 signal pathways were screened by KEGG pathway enrichment analysis,including neuroactive ligand-receptor interaction,retrograde endocannabinoid signaling and calcium signaling pathway.Docking results showed that the main constituents had certain affinities with the key targets.The active ingredients in CCEO regulated multiple signaling pathways to ameliorate pain through AR,ACHE,ESR1,GABRG2,PTGS2 and PPARγ. 展开更多
关键词 Cinnamomum camphora essential oil gas chromatography-mass spectrometry ANALGESIC network pharmacology selina-6-en-4-ol
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ANALYSIS OF VOLATILE CONSTITUENTS OF CHINESE MEDICINAL HERBS BY FLASH DISTILLATION/CAPILLARY GAS CHROMATOGRAPHY/MASS SPECTROMETRY
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《Chemical Research in Chinese Universities》 SCIE CAS 1986年第1期13-18,共6页
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 spect... 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. 展开更多
关键词 OC analysis OF VOLATILE CONSTITUENTS OF CHINESE MEDICINAL HERBS BY FLASH DISTILLATION/CAPILLARY gas CHROMATOGRAPHY/MASS spectrometry gas
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Simultaneous Determination of Hexoestrol, Diethylstilbestrol, Estrone and 17-Beta-estradiol in Feed by Gas Chromatography-mass Spectrometry 被引量:6
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作者 Huo Feng Li Ning Lin Xiao-Li 《Journal of Northeast Agricultural University(English Edition)》 CAS 2016年第1期44-49,共6页
A method was developed for the simultaneous determination of four kinds of estrogens (hexoestrol, diethylstilbestrol, estrone, and 17-beta-estradiol) in feed by gas chromatography-mass spectrometry (GC-MS). After ... A method was developed for the simultaneous determination of four kinds of estrogens (hexoestrol, diethylstilbestrol, estrone, and 17-beta-estradiol) in feed by gas chromatography-mass spectrometry (GC-MS). After the sample was extracted by ethyl ether and cleaned-up on HLB phase extraction column, four kinds of estrogens were derived and quantified in gas chromatographymass spectrometry. The results showed that the linear detectable ranged from 2.5 ng· mL-1 to 250 ng· mL-1for hexoestrol and from 5 ng· mL-1 to 500 ng· mL-1 for three other estrogens with the correlation coefficients (R2) were no less than 0.990. The recoveries were in the range of 76.34%-96.33% and the relative standard deviation was no more than 22.7%. The limits of quantitation (LOQ) for all analytics were between 10 ug· kg^-1 and 20 ug· kg^-1. The method was accurate and sensitive and could meet the actual requirements for the analyses of feed samples. 展开更多
关键词 gas chromatography-mass spectrometry hexoestrol DIETHYLSTILBESTROL ESTRONE 17-beta-estradiol FEED
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Volatile components of Rhizoma Alpiniae Officinarum using three different extraction methods combined with gas chromatography-mass spectrometry 被引量:3
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作者 Zhi-Sheng Xie Xin-Jun Xu +3 位作者 Chun-Yan Xie Jie-Yun Huang Mei Yang De-Po Yang 《Journal of Pharmaceutical Analysis》 SCIE CAS 2013年第3期215-220,共6页
Volatile components from Rhizoma Alpiniae Officinarum were respectively extracted by three methods including hydrodistillation, headspace solid-phase microextraction (HS-SPME) and diethyl ether extraction. A total o... Volatile components from Rhizoma Alpiniae Officinarum were respectively extracted by three methods including hydrodistillation, headspace solid-phase microextraction (HS-SPME) and diethyl ether extraction. A total of 40 (hydrodistillation), 32 (HS-SPME) and 37 (diethyl ether extraction) compounds were respectively identified by gas chromatography-mass spectrometry (GC/MS) and 22 compounds were overlapped, including β-farnesene, 7-muurolene, 2,6-dimethyl-6- (4-methyl-3-pentenyl)bicyclo[3.1.1]hept-2-ene, eucalyptol and cadina-1(10), 4-diene and so forth, varying in relative contents. HS-SPME is fast, sample saving and solvent-free and it also can achieve similar profiles as those from hydrodistillation and solvent extraction. Therefore, it can be the priority for extracting volatile components from medicinal plants. 展开更多
关键词 Rhizoma AlpiniaeOfficinarum Volatile components HYDRODISTILLATION Headspace solid-phasemicroextraction Diethyl ether extraction gas chromatography-mass spectrometry
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Metabolomic Fingerprint of the Model Ciliate, Tetrahymena thermophila Determined by Untargeted Profiling Using Gas Chromatography-Mass Spectrometry 被引量:1
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作者 XU Jing BO Tao +1 位作者 SONG Weibo WANG Wei 《Journal of Ocean University of China》 SCIE CAS CSCD 2019年第3期654-662,共9页
The ciliate Tetrahymena is a valuable model organism in the studies of ecotoxicology. Changes in intracellular metabolism are caused by exogenous chemicals in the environment. Intracellular metabolite changes signify ... The ciliate Tetrahymena is a valuable model organism in the studies of ecotoxicology. Changes in intracellular metabolism are caused by exogenous chemicals in the environment. Intracellular metabolite changes signify toxic effects and can be monitored by metabolomics analysis. In this work, a protocol for the GC-MS-based metabolomic analysis of Tetrahymena was established. Different extraction solvents showed divergent effects on the metabolomic analysis of Tetrahymena thermophila. The peak intensity of metabolites detected in the samples of extraction solvent Formula 1(F1) was the strongest and stable, while 61 metabolites were identified. Formula 1 showed an excellent extraction performance for carbohydrates. In the samples of extraction solvent Formula 2(F2), 66 metabolites were characterized, and fatty acid metabolites were extracted. Meanwhile, 57 and 58 metabolites were characterized in the extraction with Formula 3(F3) and Formula 4(F4), respectively. However, the peak intensity of the metabolites was low, and the metabolites were unstable. These results indicated that different extraction solvents substantially affected the detected coverage and peak intensity of intracellular metabolites. A total of 74 metabolites(19 amino acids, 11 organic acids, 2 inorganic acids, 11 fatty acids, 11 carbohydrates, 3 glycosides, 4 alcohols, 6 amines, and 7 other compounds) were identified in all experimental groups. Among these metabolites, amino acids, glycerol, myoinositol, and unsaturated fatty acids may become potential biomarkers of metabolite set enrichment analysis for detecting the ability of T. thermophila against environmental stresses. 展开更多
关键词 TETRAHYMENA THERMOPHILA metabolomics ECOTOXICOLOGY gas chromatography-mass spectrometry
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Multiresidue Method for Determination of 67 Pesticides in Water Samples Using Solid-Phase Extraction with Centrifugation and Gas Chromatography-Mass Spectrometry 被引量:3
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作者 Abir Kouzayha Abdul Rahman Rabaa +3 位作者 Mohamad Al Iskandarani Daniel Beh Hélène Budzinski Farouk Jaber 《American Journal of Analytical Chemistry》 2012年第3期257-265,共9页
A new multi-residue method based on solid-phase extraction (SPE) with centrifugation was developed for determination and quantitation of 67 pesticides in water samples. Two SPE cartridges were tested: Chromabond C18 a... A new multi-residue method based on solid-phase extraction (SPE) with centrifugation was developed for determination and quantitation of 67 pesticides in water samples. Two SPE cartridges were tested: Chromabond C18 and Oasis HLB. Parameters that influence the extraction efficiency such as the eluent volume, the sample loading volume, the addition of organic solvent to water sample, sorbent drying and elute concentration were optimized. The innovation of this work was the examination of the use of a centrifugation technique in both the drying and elution steps. When combined with centrifugation, the volume of the elution solvent was reduced to 2 mL and the time for sorbent drying decreased also to 10 min under vacuum. Under the optimized conditions, this method showed good recoveries higher than 65% - 68% for the 67 analyzed pesticides using the C18 and HLB cartridges with relative standard deviations lower than 9.7% - 12.3%. Limits of quantification were between 2 and 20 ng.L–1. The simplicity of the described method, use of less of organic solvent, short procedure time, and good recoveries demonstrate the advantages of this environmentally friendly approach for routine analysis of numerous samples. 展开更多
关键词 MULTI-RESIDUE PESTICIDES SOLID-PHASE Extraction CENTRIFUGATION gas chromatography-mass spectrometry
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Gel Permeation Chromatography Purification and Gas Chromatography-Mass Spectrometry Detection of Multi-Pesticide Residues in Traditional Chinese Medicine 被引量:2
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作者 Wan-E Zhuang Zhen-Bin Gong 《American Journal of Analytical Chemistry》 2012年第1期24-32,共9页
The measurement of 23 organochlorine, organophosphorus, and pyrethroid pesticides in typical traditional Chinese medicine (TCM), flos lonicerae, was made using gel permeation chromatography (GPC) purification and gas ... The measurement of 23 organochlorine, organophosphorus, and pyrethroid pesticides in typical traditional Chinese medicine (TCM), flos lonicerae, was made using gel permeation chromatography (GPC) purification and gas chroma- tography-mass spectrometry (GC-MS) detection. The pesticides were extracted with ultrasonic device and 5.0 mL mixture of ethyl acetate and cyclohexane (1:1, v/v). Coextractants from sample matrices which may have interfere to the qualitative and quantitative analysis, such as pigments, were removed using GPC purification. Simultaneous full scan and selective ion monitor (scan/SIM) mode for GC-MS was used for qualitative and quantitative analysis, which pro- vided retention time and characteristic fragments ratio for each pesticide so as to positively identify each analyte. Rela- tive standard deviations (RSDs) were within 7.7% (5.0 - 22.5 μg/kg, n = 3). The recoveries of pesticide standards at the spiked concentration of 5.0 - 22.5 μg/kg were between 87.1% and 110.9%. Limits of detection (LODs) for the analytes were 0.16 - 3.2 μg/kg, which could meet the demand of routine analysis and TCM quality control. 展开更多
关键词 Traditional Chinese Medicine Multi-Pesticide RESIDUE Flos Lonicerae Gel PERMEATION CHROMATOGRAPHY gas chromatography-mass spectrometry
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Volatile Compounds Fingerprints for White Duck down and White Goose down Determined by Gas Chromatography-Ion Mobility Spectrometry
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作者 Fei Wang Qihui Zhang +6 位作者 Yiwen Lin Wenjian Chen Hui Wang Kuntai Li Jihua Li Yuliang Chen Leiyu Wang 《Agricultural Sciences》 CAS 2023年第3期432-445,共14页
This work first describes a simple approach for the untargeted profiling of volatile compounds for distinguishing between white duck down (WDD) and white goose down (WGD) based on resolution-optimized GC-IMS combined ... This work first describes a simple approach for the untargeted profiling of volatile compounds for distinguishing between white duck down (WDD) and white goose down (WGD) based on resolution-optimized GC-IMS combined with optimized chemometric techniques, namely PCA. The detection method for down samples was established by using GC-IMS. Meanwhile, the reason of unpleasant odors caused by WDD was explained on the basis of the characteristic volatile compounds identification. GC-IMS fingerprinting can be considered a revolutionary approach for a truly fully automatable, cost-efficient, and in particular highly sensitive method. A total of 22 compounds were successfully separated and identified through GC-IMS method, and the significant differences in volatile compounds were observed in three parts of WDD and WGD samples. The most characteristic volatile compounds of WGD belong to aldehydes, whereas carboxylic acids from WDD were detected generated by autoxidation reaction. Meanwhile, the main reason of unpleasant odor generation was possibly attributed to the high concentration of volatile carboxylic acids of WDD. Therefore, the constructed model presents a simple and efficient method of analysis and serves as a basis for down processing and quality control. 展开更多
关键词 gas Chromatography-Ion Mobility spectrometry (GC-IMS) Principal Components analysis (PCA) DOWN Characteristic Volatiles Fingerprints Carboxylic Acids
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Super Antibiotics, Part II. Hyperforin, Mass Spectroscopy (MS) and Gas Chromatography-Mass Spectrometry (GC-MS), Evidence of Permeability of the Blood-Testis Barrier (BTB) and the Blood-Brain Barrier (BBB) to Hyperforin 被引量:2
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作者 Ilia Brondz 《International Journal of Analytical Mass Spectrometry and Chromatography》 2016年第4期66-73,共8页
In the first article of this series, we presented some evidence of hyperforin as an antibiotic, antiprotozoal, antiviral, anticancer, and immunomodulatory substance. In the present article, evidence of the permeabilit... In the first article of this series, we presented some evidence of hyperforin as an antibiotic, antiprotozoal, antiviral, anticancer, and immunomodulatory substance. In the present article, evidence of the permeability of the blood-testis barrier (BTB) and blood-brain barrier (BBB) to hyperforin and its distribution in other organs of the domestic pig (Sus scrofa domesticus) are revealed. Seven-month-old male boars with a body mass of 100 kg were fed a diet containing hyperforin. Organs were surgically removed under anesthesia. Organs were suitable prepared and extracted, and then analyzed using gas chromatography-mass spectrometry with supersonic molecular beams (GC-MS with SMB). The presence of hyperforin was recorded in all organs and body fluids. Special attention was paid to the evaluation of the presence of hyperforin in the brain and testes of experimental animals. The presence of hyperforin in the brain and testes of experimental animals was established by GC-MS with SMB. The results are of interest because penicillin and numerous other antibiotics cannot pass through the BTB or BBB if healthy or non-inflamed, which limits their use in patients with meningitis and gonorrhea. The findings are also of interest in cases of penicillin- and multi-antibiotic-resistant bacterial infections. 展开更多
关键词 ANTIBIOTICS HYPERFORIN Super antibiotic Mass Spectroscopy gas chromatography-mass spectrometry Blood-Testis Barrier Blood-Brain Barrier Methicillin-Resistant Staphylococcus aureus (MRSA)
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Determination of Natural Rubber Content in Taraxacum Kok-Saghyz by Pyrolysis Gas Chromatography-Mass Spectrometry 被引量:1
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作者 Wang Lu Guo Tianyang +3 位作者 Zhang Qing Ma Qiang Dong Yiyang Zhang Jichuan 《China Petroleum Processing & Petrochemical Technology》 SCIE CAS 2020年第3期43-48,共6页
Nowadays,natural rubber(NR)is an indispensable material for industrial production and peoples’daily utilization.The root of Taraxacum kok-saghyz(TKS)contains a large amount of NR,which is potentially to be an alterna... Nowadays,natural rubber(NR)is an indispensable material for industrial production and peoples’daily utilization.The root of Taraxacum kok-saghyz(TKS)contains a large amount of NR,which is potentially to be an alternative rubber source of conventional Hevea brasiliensis(HB).In order to find a convenient,fast and green method for qualitative and quantitative analysis of NR in TKS,a pyrolysis gas chromatography-mass spectrometric(Py-GCMS)method was developed accordingly.The results indicated that the main products of TKS rubber after pyrolysis were isoprene and limonene,respectively,and the limit of detection(LOD)of TKS rubber was 2.603 mg/g.The ratios of NR mass fractions in TKSs by Py-GC-MS ranged from 1.20%±0.20%to 8.61%±0.28%.The developed method has been used for determination of actual TKS samples and can be further applied to the field test for rapid breeding and large-scale cultivation of TKS thereof. 展开更多
关键词 Taraxacum kok-saghyz(TKS) natural rubber(NR) pyrolysis gas chromatography-mass spectrometry(Py-GCMS) quantification
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Determination of Aroma Composition of Santalum album Linn by Solid-phase Microextraction-Gas Chromatography-Mass Spectrometry
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作者 Guotong CHEN Meiqin LI +2 位作者 Chao HUANG Na WEN Aixia WANG 《Asian Agricultural Research》 2020年第9期43-45,共3页
[Objectives]This study aimed to determine the volatile components in Santalum album Linn and gradually clarify the aroma composition of S.album Linn.[Methods]Solid-phase microextraction method was used to obtain the v... [Objectives]This study aimed to determine the volatile components in Santalum album Linn and gradually clarify the aroma composition of S.album Linn.[Methods]Solid-phase microextraction method was used to obtain the volatile components of S.album Linn.The aroma components were analyzed by gas chromatography-mass spectrometry and their relative contents were calculated using the area normalization method.[Results]In a dry state at room temperature,39 chemical components were identified from S.album Linn,mainly olefins(91.15%),alkanes(3.00%),alcohols(2.56%),esters(2.19%),ketones(0.55%),aldehydes(0.41%)and heterocyclics(0.14%).[Conclusions]This method has the advantages of low sample consumption,easy operation,rapid identification of aroma components and high sensitivity,and can effectively separate and determine volatile components in S.album Linn,realizing the rapid identification of different S.album Linn varieties and providing technical support for further research on Chinese medicinal materials. 展开更多
关键词 Santalum album Linn Solid-phase microextraction(SPME) gas chromatography-mass spectrometry Aroma component
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Gas Chromatography-Mass Spectrometry Study from the Leaves Fractions Obtained of <i>Vernonanthura patens</i>(Kunth) H. Rob
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作者 Patricia Manzano Santana Migdalia Miranda +3 位作者 Juan Abreu Payrol Mario Silva Víctor Hernández Esther Peralta 《International Journal of Organic Chemistry》 2013年第2期105-109,共5页
Preliminary phytochemical study of methanol extracts from Vernonanthura patens’s leaves located in Marcabelí (El Oro province), Ecuador. The methodology consisted of chromatographic column separations with incre... Preliminary phytochemical study of methanol extracts from Vernonanthura patens’s leaves located in Marcabelí (El Oro province), Ecuador. The methodology consisted of chromatographic column separations with increasing polarity solvents and the analysis of fractions by Gas Chromatography-Mass Spectrometry coupled system (GC-MS). The structure of 53 compounds was proposed. Analyzed V. patens species showed the presence of terpene and aliphatic hydrocarbons, free fatty acids and their methyl and ethyl esters, oxygen sesqui, triterpenoids and sugars. For ecuadorian species, there are no records of chemical studies. 展开更多
关键词 Vernonanthura patens PHYTOCHEMICAL STUDY gas Chromatographic-Mass spectrometry analysis
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Direct Determination of Polychlorinated-Biphenyls in Automotive Shredder Residues by Gas Chromatography-Mass Spectrometry
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作者 María de los D. E. Otero Mohamed N. K. Sayadi Luis María Polo Díez 《Journal of Analytical Sciences, Methods and Instrumentation》 2013年第2期90-97,共8页
An easy and rapid method is proposed for the determination of PCBs in automotive shredder residues, using gas chromatography combined with low resolution mass spectrometry (GC-MS). It is based on direct n-hexane solid... An easy and rapid method is proposed for the determination of PCBs in automotive shredder residues, using gas chromatography combined with low resolution mass spectrometry (GC-MS). It is based on direct n-hexane solid-liquid extraction, subtracting background of the lineal aliphatic hydrocarbon interferences and integration of chromatographic peaks containing selected ion PCBs masses (256, 292 and 326 m/z), which are common in all PCBs formulations. Recoveries were in the 80% - 120% range;PCBs were detected and quantified in shredder samples from an automotive shredder industry, thus indicating the validity of the method. 展开更多
关键词 PCBS SOLID-LIQUID Extraction AUTOMOTIVE SHREDDER RESIDUES gas chromatography-mass spectrometry (GC-MS)
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Transcriptome analysis of the influence of CPPU application for fruit setting on melon volatile content 被引量:2
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作者 CHENG Jin-tao CHEN Hai-wen +5 位作者 DING Xiao-chen SHEN Tai PENG Zhao-wen KONG Qiu-sheng HUANG Yuan BIE Zhi-long 《Journal of Integrative Agriculture》 SCIE CAS CSCD 2021年第12期3199-3208,共10页
In fruit production,the application of the plant growth regulator 1-(2-chloro-4-pyridyl)-3-phenylurea(CPPU)dulls the fruit aroma.Gas chromatography-mass spectrometry and transcriptome analyses were performed on CPPU-t... In fruit production,the application of the plant growth regulator 1-(2-chloro-4-pyridyl)-3-phenylurea(CPPU)dulls the fruit aroma.Gas chromatography-mass spectrometry and transcriptome analyses were performed on CPPU-treated and pollinated fruits to determine how CPPU affects the production of aroma in melon fruit.The results showed that the contents of two important esters(benzyl acetate and phenethyl acetate)in the CPPU-treated fruits were significantly lower than those in the pollinated fruits.Transcriptome sequencing data revealed that most differentially expressed genes were involved in“phenylalanine metabolism”pathway,and their expression was significantly decreased in the CPPU-treated fruits.Further analysis showed that the phenylalanine content in the CPPU-treated fruits was significantly higher than that in the pollinated fruits.In summary,CPPU application interferes with phenylalanine metabolism in melon fruits and affects the production of aromatic esters. 展开更多
关键词 AROMA VOLATILES MELON CPPU fruit set transcriptome analysis gas chromatography-mass spectrometry
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The analysis of volatile flavor components of Jin Xiang garlic and Tai’an garlic 被引量:3
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作者 Changsong Shan Chao Wang +1 位作者 Jin Liu Peng Wu 《Agricultural Sciences》 2013年第12期744-748,共5页
The volatile flavor compounds of Jin Xiang garlic and Tai’an garlic in chemical composition were detected and analyzed and the contents of them were compared and determinated. The volatile constituents of Jin Xiang g... The volatile flavor compounds of Jin Xiang garlic and Tai’an garlic in chemical composition were detected and analyzed and the contents of them were compared and determinated. The volatile constituents of Jin Xiang garlic and Tai’an garlic were compared and analyzed by automatic static headspace and gas chromatography-mass spectrometry. Qualitative analysis of samples was made through the analysis of gas chromatography-mass spectrometry and NIST mass spectral library computer retrieval, and quantitative analysis was made by using area normalization method. The analysis results show that the slight difference of the volatile flavor compounds was detected in different places of origin garlic and Jin Xiang garlic was detected more total sulfur-containing compounds than Tai’an garlic. Meanwhile, the contents of sulfur compounds of the fresh garlic were more than the stored garlic and there were significant differences between them. The tests results indicated that flavor substances’ types were slightly different between Jin Xiang garlic and Tai’an garlic, and regional differences cannot affect the garlic flavor substances type. Jin Xiang garlic has more obvious flavor substances than Tai’an garlic which play a decisive role in the garlic flavor, such as 1,3-dithiane, and allyl trisulfide and allyl disulfide and diallyl tetrasulphide. The result of this research indicates that Automatic static headspace and gas chromatography-mass spectrometry is a fast, easy, efficient and accurate method to analyze and identify the volatile flavor components of garlic. 展开更多
关键词 GARLIC Automatic Static HEADSPACE gas chromatography-mass spectrometry analysis Fla-vor COMPONENTS analysis
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Optimization of Fermentation Process of Carrot Juice by Probiotics and Analysis of Aroma Components 被引量:3
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作者 Xiaotian LI Guangpeng LIU +4 位作者 Jinglong LI Fengtao ZHU Bo ZHAO Yan ZHAO Fatao HE 《Asian Agricultural Research》 2019年第1期83-88,共6页
Carrot juice was fermented by probiotic Lactobacillus casei( CTCF-LC1) and Lactobacillus reuteri( CTCF-LT1) with sensory score as the main evaluation index,and the fermentation process was optimized by single factor a... Carrot juice was fermented by probiotic Lactobacillus casei( CTCF-LC1) and Lactobacillus reuteri( CTCF-LT1) with sensory score as the main evaluation index,and the fermentation process was optimized by single factor and response surface experiments.The optimum ratio of fermentative strains CTCF-LC1∶ CTCF-LT1 was 1∶ 1,fermentation time was 8 h,inoculum size was 3.1% and fermentation temperature was26.6℃.Under the optimum conditions,the sensory score of fermented carrot juice was 91.3,pH was 4.50,total acid content was 3.73 g/L,total sugar content was 54.25 g/L,and reducing sugar content was 28.41 g/L.The carrot juice has bright orange color and stable state.It not only has the fresh flavor of fruit and vegetable juice,but also has the unique aroma from lactic acid bacteria fermentation,as well as soft and even taste,moderate acidity and sweetness.The changes of aroma components of carrot juice before and after fermentation were analyzed by headspace solid phase microextraction( HSPME) coupled with gas chromatography-mass spectrometry( GC-MS).After fermentation,substances with medicinal flavor components were reduced,and a lot of floral and fruit-scented substances were produced,such as methyl myristate,β-pinene,phenylethanol,and geraniol.Therefore,the results of this study can provide a theoretical basis for the development of fermented fruit and vegetable juice products with unique flavor substances. 展开更多
关键词 LACTIC acid bacteria CARROT JUICE Response surface methodology AROMA components gas chromatography-mass spectrometry
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