紫苏籽中脂肪酸及主成分α-亚麻酸的分析   总被引：1，自引：0，他引：1  

回瑞华  刁全平  侯冬岩  李铁纯 《鞍山师范学院学报》2016,(4):24-27

对紫苏籽脂肪酸的组成和主成分α-亚麻酸进行分析.采用索氏提取法对紫苏籽中脂肪油进行提取,并进行甲酯化处理,利用气相色谱-质谱法对其脂肪酸组成进行鉴定.由紫苏籽中分离鉴定出8种脂肪酸,占紫苏籽油总量的95.80%.主要含有α-亚麻酸66.45%、棕榈酸17.30%、亚油酸2.62%、油酸2.25%.用高效液相色谱法对主成分α-亚麻酸进行了定量分析,含量为275 mg/g.  相似文献   

Characterization of impurities in the bulk drug lisinopril by liquid chromatography/ion trap spectrometry     

Zhu PX  Wang DH  Sun CR  Shen ZQ 《Journal of Zhejiang University. Science. B》2008,9(5):385-390

Two trace impurities in the bulk drug lisinopril were detected by means of high-performance liquid chromatography coupled with mass spectrometry (HPLC/MS) with a simple and sensitive method suitable for HPLC/MSn analysis.The frag-mentation behavior of lisinopril and the impurities was investigated,and two unknown impurities were elucidated as 2-(6-amino-1-(1-earboxyethylamino)-1-oxohexan-2-ylamino)-4-phenylbutanoic acid and 6-amino-2-(1-carboxy-3-phenylpro-pylamino)-hexanoic acid on the basis of the multi-stage mass spectrometry and exact mass evidence.The proposed structures of the two unknown impurities were further confirmed by nuclear magnetic resonance (NMR) experiments after preparative isola-tion.  相似文献   

花生油中脂肪酸组成的气相色谱—质谱分析   总被引：1，自引：0，他引：1  

顾黎 《林区教学》2007,(2)

将花生油皂化和甲酯化后,用GC-MS测定了花生油的脂肪酸组成,共鉴定出油酸、亚油酸、棕榈酸、花生酸、硬脂酸等14种化合物.主要成分为油酸、亚油酸、棕榈酸和硬脂酸,它们的相对含量分别为42%、36%、8%和4%。  相似文献   

Volatile constituents in the flowers of Elsholtzia argyi and their variation： a possible utilization of plant resources after phytoremediation   总被引：2，自引：0，他引：2  

Peng HY  Yang XE 《Journal of Zhejiang University. Science. B》2005,6(2):91-95

Phytoremediation effectiveness and remediation costs are driving factors of this project. Full utilization of plant resources after their being used for phytoremediation is an unsolved problem. GC/MS technique was used to investigate the volatiles of the flowers from Elsholtzia argyi (PFE 1 : Purple Flower Elsholtzia) and their variation (WFE: White Flower Elsholtzia),naturally growing in Pb/Zn mined area, and Elsholtzia argyi (PFE2: Purple Flower Elsholtzia), naturally growing in Jiuxi uncontaminated agriculture soil. Seventeen compounds constituting 86.88% of total essential oils were identified in PFE1, with 2,6-octadienoic acid,3,7-dimethyl-methyl ester being the main constituent (63.30%). Sixteen compounds accounting for 95.32% of total essential oils were identified in WFE, with caryophyllene being the main component (55.02%). Compared to PFE1, PFE2 contained lower level of 2,6-octadienoic acid,3,7-dimethyl-methyl ester (31.76%), which was the main constituent in the total essential oils of PFE2. Caryophyllene is the main ingredient of flavor. Elsholtzia ketone was identified in all the three Elsholtzia plants. It can be concluded that the selected Elsholtzia argyi plants can be exploited on their versatile uses as fragrances and antiseptics due to the perfume ingredient and antibacterial components existing in their essential oils.  相似文献   

泽兰中脂肪酸的气相色谱-质谱分析   总被引：3，自引：0，他引：3  

许冰  侯冬岩  回瑞华  刘晓媛  李学成  张鹏飞 《鞍山师范学院学报》2005,7(6):55-57

采用索氏提取法提取了泽兰中的脂肪酸成分，再进行甲酯化处理，利用气相色谱-质谱（GC-MS）法对其进行分析．结果表明：从泽兰中分离并鉴定出5种脂肪酸，占其总检出量的59．87％．不饱和脂肪酸占脂肪酸总量的33．84％，饱和脂肪酸占脂肪酸总量的26．03％．  相似文献   

不同产地金银花挥发性成分的研究     

侯冬岩  李铁纯  刁全平  回瑞华 《鞍山师范学院学报》2017,(6):39-43

对不同产地金银花挥发性化学成分进行研究.采用同时蒸馏萃取法(SDE)提取金银花的挥发油.经气相色谱-质谱联用技术鉴定各色谱峰的化学成分,用峰面积归一化确定各化学成分相对含量.实验选用的6产地金银花样品中,辽宁、宁夏、安徽、江西金银花的相同成分相对较多,但在相对百分含量上仍有较大差异;山东、云南金银花挥发油含量及类别较其它地区差异性较大.辽宁、安徽金银花挥发性成分中苯乙醇相对含量最高,分别为17.07％和15.75％;宁夏、江西金银花挥发性成分中棕榈酸相对含量最高,分别为23.46％和11.58％;山东金银花挥发性成分中柠檬烯相对含量最高为16.83％;云南金银花挥发性成分中3,7-二甲基-1,6-辛二烯-3-醇相对含量最高为29.13％.  相似文献   

罗汉果中微量元素的ICP-MS法分析     

侯冬岩  刁全平  李铁纯  吴寒  回瑞华 《鞍山师范学院学报》2017,19(2)

采用微波消解法处理罗汉果样品,运用电感耦合等离子体质谱法(ICP-MS) 测定罗汉果样品中的微量元素钠(Na)、镁(Mg)、钾(K)、钙(Ca)、锰(Mn)、锌(Zn)、砷(As)、硒(Se)、汞(Hg)和铅(Pb).在优化实验条件下,方法的检出限为0.19~20.3 μg/g,精密度为2.92%~10.9%,回收率为80.83%~105.60%.  相似文献   

用同位素稀释的气相色谱／高分辨质谱联用测定中国珠江流域鱼体中氯化二苯并二嗯英和氧化二苯并呋喃     

张健清 周健蒋友胜  江洁庄志雄  刘晓明吴勇宁 《深圳特区科技》2005,(11):130-135

Objective：PCDD/Fs level in 22 fish samples was investigated in Pearl river Delta area in order that the PCDD/Fs pollution level in common fish can be evaluated. Methods： Dibenzo-p-Dioxins and Dibenzo-Furans was extracted from the sample by Soxhlet extraction, concentrated then purified by column chromatography, carbon column enrichment,. Confirmation and quantitative analysis at ppt（pg/g） level of PCDD/Fs was performed by HRGC/HRMS using multiple ion detection mode（MID）. Certified reference material using Proficiency test sample fish muscle test material 0613 that was obtained from Central Science Laboratory（CSL） in Britain. Results： The average of concentration in wet weight is 1.261 ng/kg,, the average total WHO-TEQ for 22 samples is 0.246ng/kg wet weight. Generally, OCDD, 2,3,7,8-TCDF, 1,2,3,4,6,7,8-HpCDD was the main contributors to the total 17 PCDD/Fs detected, average account for 21%,16%,14%, respectively. While 1,2,3,7,8-PeCDD, 2,3,4,7,8-PeCDF, 2,3,7,8-TCDD were main contributors to the total WHO-TEQ, account for 40%,27%, 13% respectively. The total TEQ for 22 fishes ranged from 0.03 ng/kg wet weight to 0.878 ng/kg wet weight. Conclusions： PCDD/Fs level was largely different from sample to sample depending on the sample kinds. The level in the Pearl river Delta area fish samples is not distinct comparing with other countries, but some kind fish level should be paid more attention on it since its higher level. The relationship between source of PCDD/Fs and PCDD/Fs level in fish will be studied deeply in the future.  相似文献   

不同季节含笑挥发油成分的GC—MS分析     

汪洪武刘艳清  鲁湘鄂郑海燕 《西江大学学报》2006,27(5):30-32

分析不同采摘季节对含笑挥发油成分的影响．采用水蒸气蒸馏法提取含笑中的挥发油，用归一化法测定各组分的质量百分数，并用GC-MS对其化学成分进行鉴定．共鉴定出33种化合物，占挥发油总成分的80％以上，说明不同采摘季节对含笑挥发油成分的影响很大．本实验稳定可靠、重现性好，适用于含笑挥发油成分的分析．  相似文献   

柞蚕蛹中脂肪酸成分的GC/MS研究   总被引：1，自引：0，他引：1  

王月囡  李铁纯  张兰杰  苏钲善 《鞍山师范学院学报》2008,10(6)

采用索氏提取方法提取柞蚕蛹油,用KOH/CH3OH酯交换法甲酯化处理,以气相色谱/质谱方法测定脂肪酸的组成.共鉴定出13种脂肪酸成分,其中以亚麻酸(LNA)、棕榈酸(P)、硬脂酸为主,柞蚕蛹油中不饱和脂肪酸含量占总脂肪酸总量的66.63%.  相似文献