粉绿铁线莲挥发油成分分析

利用气相色谱－质谱联用技术对青海粉绿铁线莲的挥发油成分进行了研究,共鉴定出59种组分,其中主要成分为十六酸乙酯,9,12,15－十八三烯酸乙酯,亚油酸乙酯,十九烷,正二十五烷,正二十六烷,6,10,14－三甲基－2－十五烷酮,双（2－乙基己基）邻苯二甲酸酯,十八烷酸乙酯,N－苯基－萘胺等,其中十六酸乙酯的含量最高,占挥发油成分总量的24．06％,检出成分占挥发油总量的87．8％。     

燕子掌挥发油化学成分的研究

应用气象色谱-质谱联用技术对燕子掌挥发油化学成分进行了分析研究,共鉴定出66种组分与燕子掌主要挥发性化学成分以苯乙醇、2,6,6-三甲基-2,4-环庚二烯-1-酮、6,10,14-三甲基十五烷-2-酮、十六烷酸甲酯、十六烷酸乙酯、十八烷酸甲酯为主要成分,化合物类型以酮、酯、类等化合物为主,其中十六烷酸甲酯的含量最高,占挥发油总量的26．13％。     

豺皮樟叶挥发油化学成分的研究

利用GC－MS联用技术从豺皮樟（Litsea rotundifolia var.oblongifolia)叶挥发油中分离和鉴定了27个化合物,占挥发油总量的88．75％,其中主要成分是十二烷酸（43．68％）,肉豆蔻酸（14．61％）,十一烷酸（4．70％）,棕榈酸（4．15％）。     

岷山毛建草挥发油化学成分分析

利用气相色谱 质谱联用技术对岷山毛建草的挥发油成分进行分析 ,共鉴定出 6 1种组分。其中主要成分为十六烷酸、十六烷酸乙酯、3 ,5 双烯 豆甾烷、N ,N 二苯基 [1,1 联苯 ] 4,4′肼、邻苯二甲酸二丁酯、二十七烷、二十九烷、三十二烷、十八烷酸乙酯、二十二烷酸乙酯等 ,其中十六烷酸和十六烷酸乙酯的含量较高 ,占挥发油成分总量的 14 2 %。检出成分占挥发油成分的 6 3 3%。     

金线莲挥发油化学成分的研究

采用水蒸气蒸馏法提取花叶开唇兰挥发油,用GC毛细管柱进行分析,归一化法测定其相对含量,并用GC-MS法鉴定化学成分。检出182个成分,鉴定出73个化合物,占挥发油总量的92.64%,主要成分为:正十六烷酸(25.22%)、(Z,Z)-9,12-十八碳二烯酸甲酯(6.47%)、11,14,17-二十碳三烯酸甲酯(4.42%)、(Z,Z)-9,12-十八碳二烯酸(15.35%)和(Z,Z,Z)-9,12,15-十八碳三烯酸甲酯(13.64%)。     

云南使君子仁油化学成分的GC-MS分析

以常规溶剂萃取得使君子仁油,取两份油,一份经甲酯化处理,别一份不甲酯化,然后采用重量法和气相色谱-质谱联用技术分别测定使君子仁油含量和脂肪酸成分。结果表明：使君子仁油含量为15％;从甲酯化脂肪油中共检测出5种成分,其中E-9-十八烯酸占脂肪酸总量的46．99％,十六烷酸甲酯占脂肪酸总量的28．25％;另外,从未甲酯化脂肪油中共检测出7种成分,其中含防十八烯酸63．19％,十六烷酸甲酯15．26％,同时还检测出11．79％的γ-生育酚。使君子仁油是具有抗氧化性的植物源脂肪油,是开发和利用E-9-十八烯酸,十六烷酸甲酯和γ-生育酚的理想原料,在食用、医疗保健方面具有巨大潜力和广阔前景。     

鸡屎藤挥发油化学成分的研究

利用气相色谱－质谱联用（ＧＣ／ＭＳ）技术对鸡屎藤挥发油化学成分进行分析研究,初步鉴定了３１种成分,它们占挥发油总量的７７．１６％,其中含量友上的有乙氧戊烷、乙酸异戊酯、苯甲醛、己酸乙酯、甲酸苯甲酯、乙酸苯甲酯、乙酸－２－苯乙酯、５,６,７,７ａ－四氢－４,４,７ａ－三甲基－２（４Ｈ）－苯并呋喃酮、十五碳酸乙酯、十六碳酸和癸酸异戊酯等１１种成分。     

广藿香根与根茎挥发油成分研究

应用气相色谱－质谱联用技术对广藿香根和根茎中挥发油成分进行了分析,从根油中分离出５０个色谱峰,鉴定了４７个化合物,占总量的９５．０２％,主要含广藿香酮（８１．７１％）、ｄ－苦橙油醇（２．８８％）、十六烷酸（２．２１％）、广藿香醇（１．９８％）和３,７,１１－三甲基－２,６,１０－十二烷三烯－２－醇乙酸酯（１．０９％）、广藿香醇（１．９８％）和３,７,１１－三甲基－２,６,１０－十二烷三烯－１－醇乙     

山石榴果实挥发油的化学成分分析

采用超临界CO2提取山石榴果实挥发油,并利用GC-MS联用技术分析挥发油的化学组成。从山石榴果实挥发油中分离、鉴定出33个化合物,占挥发油总量的89.43%。挥发油主要由各种酯、脂肪酸成分组成,含量较高的成分是11,14-二十碳二烯酸甲酯(11,14-eicosadienoic acid,methyl ester,42.49%),棕榈酸(pal mitic acid,15.34%),硬脂酸(stearic acid,10.54%),肉豆蔻酸(myristic acid,6.26%),十六酸乙酯(hexa-decanoic acid,ethyl ester,5.84%)。     

华西银腊梅挥发油化学成分的研究

用水蒸气蒸馏法提取华西银腊梅挥发油,并用气相色谱-质谱(GC-MS)联用技术对其挥发油的化学成分进行分析,结果共鉴定了其中的39种成分,所鉴定成分含量约占总检出量的87.83%。其化学成分主要为(Z,Z)-9,12-十八碳二烯酸甲酯(9.00%),壬醛(5.83%),二十一烷(5.69%),二十烷(5.08%),辛炔酸(4.50%),2,6,10,15-四甲基十七烷(3.93%),(Z)-6-十八烯酸甲酯(3.65%),3,8-二甲基十一烷(3.52%),1-十六碳炔(3.31%),肉豆蔻酸(2.86%),月桂醛(2.81%),壬酸(2.23%),5,6,7,7α-四氢-4,4,7α三甲基-2(4H)-苯并呋喃酮(2.18%)等。     

喜光花叶挥发油的化学成分研究

利用气相色谱-质谱联用技术对喜光花叶挥发油成分进行了分析,结果分得19个化合物,占挥发油总量的95.35%。含量最高的是n-棕榈酸(37.61%),其次为3,8-二甲基-十二烷(7.28%)、四十四烷(5.07%)、溴二十二烷(4.55%)和1,54-二溴五十四烷(4.30%)。     

茅莓叶挥发油化学成分的研究

利用气相色谱-质谱联用技术对中药茅莓叶的挥发油化学成分进行了研究,共鉴定出20种成分,其中主要成分为棕榈酸,反油酸,癸醛,壬醛,顺式-9-烯,十六酸,顺式-3-癸烯醇,硬脂酸,月桂酸,6,10,14-三甲基-2-十五酮,十七醇,羊腊酸。棕榈酸的含量最高,占挥发油成分总量的32.67%。     

窄叶火筒树叶挥发油的化学成分分析

火筒树属（Leea L．）全世界约有70种,主产亚洲热带地区,中国分布有6种。火筒树属植物除了是很好的园艺和观赏植物外,许多种类可作药用,具有活血散瘀、愈溃生肌、清热解毒等功效,可用于治疗感冒发热、风湿痹痛、疮疡肿毒、咀嚼痛、跌打损伤、乳房肿痛、毒蛇咬伤,黄疸性肝炎等疾病。国内外对火筒树属植物的药理活性,特别是有关化学成分的研究报道很少。     

HS-SPME & GC-MS分析印加果种子的挥发性物质

利用顶空固相微萃取-气相色谱质谱法(HS-SPME & GC-MS)分析印加果Plukenetia volubilis近成熟种子的挥发性物质,通过面积归一法计算出各成分的相对含量。结果共分离鉴定出64种化学成分,其中6种酯类化合物,占45.86%;12种醇类化合物,占27.71%;7种烯烃类化合物,占6.71%;9种醛类化合物,占3.89%;6种酮类化合物,占2.78%;16种烷烃类化合物,占1.78%。此外,盐酸氨基脲占5.47%,氨基脲占3.25%,还有1.51%三氯乙酸和0.23%甲基异丙基苯及其他化合物。     

藏药短管兔耳草挥发性化学成分的研究

采用毛细管气相色谱—质谱联用技术对藏药短管兔耳草挥发性化学成分进行了研究,经毛细管色谱分离出62个峰,共确定了其中41种化学成分,所鉴定的化合物含量占全挥发油的77．32％;用气相色谱面积归一化法测定了各化学成分的相对含量,其主要化学成分为：二苯胺(16．47％)、邻苯二甲酸丁基—8—甲基壬基酯(6．42％)、二十六碳烷(4．76％)、十六烷酸(3．66％)、二十四碳烷(3．40％)、邻苯二甲酸二丁酯(3．38％)、二十二碳烷(3．30％)、二十碳烷(3．26％)、十六烷酸乙酯(2．77％)、十八碳烷(2．76％)、戊酸(2．48％)、3—乙基环辛烯(2．05％)等。     

Preliminary Study of Chemical Composition of the Elaiosome of Sloanea hemsleyana (lto) and Its Ecological Function to Attract Dispersal Agent

The chemical composition of the elaiosome of Sloanea hemsleyana (Elaeocarpaceae) was analyzed by gas chromatography mass spectrometry. The relative content of each compound was determined by area normalization. Eleven compounds were identified, accounting for 97.6% of the total oil composition. The major compounds were Palmitic acid (36.0%) and Oleic acid (35.0%), which were favour food for ant. And it was demonstrated that the seed of S.hemsleyana can be dispersed by ant Pheidole sp. in the habitat of Kunming Botanical Garden. As for the defensive function of elaiosome of S.hemsleyana need to be identified in field.     

Effect of soil application of humic acid on nutrients uptake,essential oil and chemical compositions of garden thyme (<Emphasis Type="Italic">Thymus vulgaris</Emphasis> L.) under greenhouse conditions

Humic acid is natural biological organic, which has a high effect on plant growth and quality. However, the mechanisms of the promoting effect of humic acid on the volatile composition were rarely reported. In this study, the effects of soil application of humic acid on the chemical composition and nutrients uptake of Thymus vulgaris were investigated. Treatments comprised 0, 50, 75 and 100 g m^?2. Essential oil was extracted by hydrodistillation and analyzed using GC–MS and GC–FID. Essential oil content was enhanced by increase of the humic acid level and its content ranged from 0.8% (control) to 2.0% (75 g m^?2). Thirty-two volatile compounds were identified and these compounds were considerably affected by humic acid. The highest percentage of thymol (74.15%), carvacrol (6.20%), p-cymene (4.24%), borneol (3.42%), trans-caryophyllene (1.70%) and cis-sabinene hydrate (1.35%) as major compounds were observed in T. vulgaris under 100 g m^?2 humic acid. There was a linear relationship (R² = 97%) between humic acid levels and thymol as a major compound. The oils were dominated by oxygenated monoterpenes followed by monoterpene hydrocarbons and sesquiterpene hydrocarbons. Based on the path coefficient analysis, the highest direct effects on essential oil content were observed in monoterpene esters (3.465) and oxygenated sesquiterpenes (3.146). The humic acid application also enhanced the uptake of N, P, K, Mg and Fe in garden thyme. The highest N (2.42%), P (0.75%), K (2.63%), Mg (0.23%) and Fe (1436.58 ppm) were observed in medium supplemented with 100 g m^?2 humic acid. In all, the utilization of humic acid could positively change nutrients uptake, essential oil content and its major constituents in T. vulgaris.     

Mapping quantitative trait loci controlling oil content,oleic acid and linoleic acid content in sunflower (<Emphasis Type="Italic">Helianthus annuus</Emphasis> L.)

Sunflower oil with high oleic acid content is in great demand due to its nutritional as well as industrial benefits. The trait is mainly controlled by dominant alleles at a major gene, Ol, with other modifiers. The objectives of this research were to map the oil content, oleic acid and linoleic acid content in sunflower seeds. An F2 mapping population from cytoplasmic male-sterile line COSF 7A (33–35 % oleic acid) and high oleic acid inbred line HO 5–13 (88–90 % oleic acid) was developed and phenotyped for oil content, oleic acid and linoleic acid content at the F2 seed level. High phenotypic and genotypic coefficients of variation were recorded for oleic acid and linoleic acid content. High heritability and high genetic advance as percent of mean was recorded for oleic acid and linoleic acid content. This indicated the presence of the additive type of gene action controlling the traits oleic acid content and linoleic acid content. The Ol gene was mapped to linkage group (LG) 14 and tightly linked to the marker HO_Fsp_b. In addition, two more quantitative trait loci (QTLs) for oleic acid content were identified in LG8 and LG9. Two QTLs for oil content and two QTLs for linoleic acid content were also identified. All these QTLs explained over 10 % of phenotypic variation. A study was conducted with 13 genotypes differing in oil quality as well as quantity over three seasons to assess the reliability of the identified QTLs over seasons. It resulted in the identification of two potential QTLs for oleic acid as well as linoleic acid content with the markers ORS 762 and HO_Fsp_b. These markers explained more than 57.6–66.6 % of phenotypic variation. Hence it can be concluded that these markers/QTLs would be useful in the marker-assisted selection breeding programme to improve oil quality. The present study also indicated the presence of at least two other genomic regions controlling oleic and linoleic acid content in sunflower.