色质

Determine the compositions and contents of seed oil and amino in the aerial parts of Capparis spinosa.

采用加速溶剂和索氏提取法提取刺山柑种子中油脂，经酯化后，以气相色谱-质谱联用技术鉴定出刺山柑种子中的脂肪酸。

Accelerated solvent extraction and Soxhlet extraction were used to extract capparis spinosa seed oil with he-xane and ethyl ether.

采用加速溶剂萃取及索氏提取法，用正己烷和乙醚为提取剂从野西瓜种子中提取油脂，经浓H2SO4催化，甲醇甲酯化处理后，以气相色谱-质谱联用技术鉴定出野西瓜种子中的脂肪酸主要组成为：油酸、亚油酸、硬脂酸等，其中不饱和脂肪酸总量占91.4%，主要成分油酸占73.3%。

Keywords Capparis spinosa;Fatty acid;GC/MS;Accelerated solvent extraction

野西瓜；脂肪酸；气相色谱-质谱；加速溶剂萃取

olatiles of different Chaenomeles sinensis cultivars in Shandong Province were investigated by means of HS-SPME coupled to GC/MS,and fruit aroma of different cultivars was studied.

中文摘要：用固相微萃取—气相色谱/质谱联用技术测定了山东省主栽光皮木瓜品种的挥发性物质，并对不同品种果实的香气成分进行了探讨。

The essential oil of Chimonanthus nitens was extracted by the volatile oil extractor, and analyzed by capillary gas chromatograph-mass spectrometry.

采用挥发油萃取器蒸馏法提取山腊梅叶的挥发油性成分，经毛细管气相色谱－质谱联用仪分析，鉴定了其中的72个挥发性化合物。

GC-MS is used to determine content of free TDI, reaction kinetics is analysed by chlorhydric acid/n-dibutyl amine titration -NCO method and DSC, so the system activation energy is calculated.

采用气相色谱-质谱法测定其游离TDI含量，用盐酸-正二丁胺滴定-NCO法和DSC法相结合，分析反应动力学规律，计算体系表观活化能。

The free radical scavenging properties of six Aloe species are to be investigated in some modified chemical system. The antioxidant was purified by silica column and thin layer chromatography and analyzed by HPLC. A fraction was purified from A. brevifolia Mill showed the most effective scavenging activities on 〓 and ·OH (66. 01% and 38. 98% respectively). With the analysis of IR spectrum, UV spectrum and mass spectrum, the structure of FA was identifed as 8-C-D-glucopyranosyl-2- [2-hydroxy] propyl-5-methyl-7-hydroxychromone. Its scavenging activity on free radicals is higher than that of aloe-emodin. Its antioxidant activity may be due to the phenoxyl on glucosyl chromone which can be react with free radicals and form relatively stable free radicals.

本研究利用分别产生超氧阴离子自由基和羟自由基的化学模型体系研究比较了不同品种芦荟提取物的清除活性氧自由基的抗氧化作用，进一步利用硅胶柱结合薄层层析法和反相高压液相色谱法，从短叶芦荟叶子中首次分离了具有较强自由基清除能力（超氧阴离子自由基和羟自由基清除率分别为66.01％和38.98％）的成分FA，利用红外光谱、紫外光谱和质谱等仪器分析结果推断出该活性成分的分子结构为8-C-吡喃葡萄糖-2-[2-羟基]-丙基-5-甲基-7-羟基对氧萘酮，它的自由基清除能力高于芦荟大黄素，是一种天然抗氧化剂。

The chromone was finally identified as cinnamoyl-C-glycoside chromone by ultraviolet, fast atom bombardment mass spectrometry, nuclear magnetic resonance (1H NMR and 13C NMR).

经过紫外检测、快原子轰击质谱及核磁共振等方法的结构分析鉴定，证实分离所得物质为肉桂酰基-C-葡萄糖甙芦荟色酮。

Label-free and cleavable isotope-coded affinity tag quantitative proteomic approaches were used to quantify the differential expression of secretory proteins from 3T3-L1 adipocytes with or without insulin stimulation.

首先，采用液相色谱-质谱联用方法对胰岛素刺激与否的3T3-L1脂肪细胞的分泌蛋白进行了大规模的定量分析；胰岛素刺激后，242种分泌蛋白表现为显著变化，其中55种蛋白质下调，187种上调。

Methods SMMC-7721 cell apoptosis was induced by HCPT and the mitochondria were isolated with a mitochondria isolation kit. Mitochondrial proteins labeled with a cleavable isotope-coded affinity tag were identified and quantified using two-dimensional liquid chromatography/tandem mass spectrometry.

用羟基喜树碱诱导肝癌细胞SMMC-7721凋亡，提取线粒体并鉴定其纯度；用可裂解的同位素标记的亲和标签技术标记线粒体蛋白质，利用二维液相色谱-串联质谱分析鉴定蛋白质。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐