Triglyceride composition of tea seed oil

Fatty acid and triglyceride compositions of the seed oil of Thea sinensis (tea seed oil) of Indian origin have been determined by combination of techniques of low temperature crystallisation, spectrophotometry, pancreatic lipase hydrolysis, thin-layer chromatography, gas–liquid chromatography and densitometry. Percentages of individual fatty acids were found to be: palmitic, 17.8; stearic, 3.0; oleic, 59.9; linoleic, 18.0. Triglyceride composition was calculated from the fatty acid compositions of the native oil and of the monoglycerides produced from it by pancreatic lipase hydrolysis. The oil is composed of 0.7, 11.1, 41.9 and 46.3% GS₃, GS₂U, GSU₂ and GU₃ respectively. Prominent features of the oil is its content of 11.6, 21.4 and 22.0% dioleolinolein, triolein and dioleopalmitin respectively.     

Triglyceride composition of Entada phaseolides seed oil

Fatty acid and triglyceride compositions of Entada phaseolides seed oil have been determined by combination of the techniques of systematic crystallisation at low temperatures, pancreatic lipase hydrolysis and gas-liquid chromatography of methyl esters. The percentages of individual fatty acids were found to be myristic 0.3, palmitic 9.1, stearic 4.4, arachidic 1.7, behenic 1.6, oleic 35.8, linoleic 46.7 and linolenic 0.4. The special characteristic of this oil is its content of 6.9, 9.6, 17.0, 19.2, 5.0, 24.1 and 10.4% of monosaturated diolein, monosaturated dilinolein, saturated oleo linolein, dioleo-linolein, triolein, oleo dilinolein and trilinolein, respectively. This investigation has indicated that the 2-position of the triglyceride is preferentially esterified with C₁₈ unsaturated acids and linoleic acid shows preference over oleic acid.     

Triglyceride composition of Sesamum indicum seed oil.

The fatty acid composition of Sesamum indicum seed oil was determined by gas–liquid chromatography. The percentages of individual acids were found to be: palmitic, 11; stearic, 6; arachidic, 1; oleic, 43; linoleic, 39. Triglyceride composition was calculated from the fatty acid compositions of the native oil and of the monoglycerides produced from it by pancreatic lipase hydrolysis. The oil is composed of 8, 41 and 51%, GS₂U, GSU₂ and GU₃ respectively. Analysis by special thin-layer chromatography combined with densitometry also indicated similar triglyceride composition for the sesame seed oil. Changes effected on the triglyceride composition by randomisation were also determined by both methods of analysis.     

Triglyceride composition of Papaver somniferum seed oil.

Poppy seed oil (P. Somniferum) contains palmitic (12%), stearic (3%), oleic (20%) and linoleic acid (65%). Lipolysis with pancreatic lipase indicates the following glyceride composition: S₃ (tr), S₂U (5%), SU₂ (34%) and U₃ (61%) or saturated dilinolein (19%), oleo-dilinolein (25%), and trilinolein (27%).     

沙生植物长柄扁桃种子油营养成分分析

探讨以长柄扁桃为原料开发新型食用植物油的可能性。采用国家标准对内蒙古产长柄扁桃仁压榨油进行了常见理化指标、营养成分、卫生指标分析及急性毒性试验研究。长柄扁桃种子油理化性能良好,是一种营养丰富的植物油源;总砷、铅、及黄曲霉毒素B_1含量符合食用植物油卫生标准;急性毒性实验结果初步判定其安全性。长柄扁桃油可开发为新型高品质食用油。     

The triglyceride composition of Hibiscus esculentus seed oil

The fatty acid composition of Hibiscus esculentus seed oil was determined by spectrophotometry and gas-liquid chromatography. The percentages of individual acids were found to be: myristic, 0.2; palmitic, 30.2; stearic, 4.0; palmitoleic, 0.4; oleic, 24.4 and linoleic, 40.8. Triglyceride composition was calculated from the fatty acid compositions of the native oil and of the monoglycerides produced from it by pancreatic lipase hydrolysis. The oil is composed of 1.8, 27.7, 48.1 and 22.4% GS₃, GS₂U, GSU₂ and GU₃, respectively.     

桃金娘籽油理化指标及成分分析

采用ASE萃取法从桃金娘籽中提油,并对油脂理化指标、脂肪酸组成及营养成分进行分析。结果表明:桃金娘籽含油率为7. 5%;桃金娘籽油的相对密度为0. 915 6,折光指数为1. 474 7,酸值(KOH)为4. 426 mg/g,过氧化值为1. 573 mmol/kg,皂化值(KOH)为180. 5 mg/g,碘值(I)为135. 0g/100 g,不皂化物含量为4. 5%;桃金娘籽油中含有16种脂肪酸,以亚油酸、油酸、硬脂酸和棕榈酸为主,不饱和脂肪酸占85. 837%,饱和脂肪酸占14. 175%;桃金娘籽油中还含有丰富的菜籽甾醇、菜油甾醇、β-谷甾醇、α-生育酚、玉米黄质等营养物质。     

The triglyceride composition of Corchorus olitorius seed oil

Corchorus olitorius seed oil and its randomised product have been subjected to pancreatic hydrolysis. Glyceride compositions have been calculated from the original fatty acid composition and those of the monoglycerides produced by hydrolysis. The percent GS₃ content of the seed oil and of its interesterified product have also been determined by the combined techniques of thin layer chromatography on silver nitrate impregnated silica gel and colorimetry.     

Fatty acid composition of Hibiscus ficulneus seed oil

The fatty acid composition of seed oil from Hibiscus ficulneus (Malvaceae) was analysed by thin-layer and gas-liquid chromatography. In addition to normal saturated and unsaturated fatty acids, three hydrogen bromide-reactive fatty acids were also identified. These were shown to be epoxyoleic (4.9%), malvalic (4.2%), and sterculic (1.0%) acids. Seed oils of Vernonia anthelmintica and Sterculia foetida were used as reference standards.     

黄瓜籽油的精炼与分析

通过索氏法提取黄瓜籽油,经过脱胶、脱酸、脱色和脱臭后,得到精炼油.考察精炼对油中各组分的影响,结果表明:实验室精炼后,黄瓜籽油的酸值、过氧化值、色泽和磷脂含量基本达到国家二级浸出大豆油的标准;精炼后,饱和脂肪酸含量升高,不饱和脂肪酸含量略有降低;而常量金属元素在精炼过程损耗较大,其中K含量减小幅度显著,达到1 505.0μg/g.     

葡萄籽油甘油三酯组成及结构分析研究

本研究采用气相色谱、胰脂酶水解法分析葡萄籽油脂肪酸组成和甘油三酯结构。结果为:其不饱和脂肪酸含量达89.34%,人体必需脂肪酸亚油酸含量为75.25%;并根据1,3–随机–2–随机分布学说计算出葡萄籽油甘油三酯组成,主要甘油三酯为LLL,含量达42.35%、Sn–LOL16.69%、Sn–POL2.18%、Sn–LLP5.52%;还采用红外光谱测定葡萄籽油官能团结构等;表明葡萄籽油是一种极具开发价值食用植物油。     

茶叶籽油与油茶籽油理化性质及脂肪酸组成比较

在对茶叶籽及油茶籽的外观、含仁率、含油率等进行测定的基础上,对茶叶籽油及油茶籽油的理化性质及脂肪酸组成进行了分析。结果表明,茶叶籽及油茶籽外观相差较大,茶叶籽油与油茶籽油在折光指数、酸值、碘值和皂化值等理化性质上较接近。脂肪酸组成上,油酸、亚油酸、棕榈酸为茶叶籽油及油茶籽油中含量最多的三种脂肪酸,油酸含量分别为52.13%和73.67%,亚油酸24.32%和11.09%,棕榈酸17.36%和10.63%。茶叶籽油和油茶籽油的单不饱和脂肪酸含量分别为54.12%和75.78%,多不饱和脂肪酸含量为24.55%和11.39%。茶叶籽含油率为19.88%,茶叶籽油潜在年产量可达15余万t。其必需脂肪酸含量是油茶籽油的2.15倍;不皂化物含量为0.77%,比油茶籽油高出22%;茶叶籽油脂肪酸比例均衡,适于人体的吸收,具有开发应用的潜力。     

The fatty acid composition of Hibiscus sabdariffa seed oil

Analysis of Hibiscus sabdariffa seed oil from different seed collections (or cultivars), representing different growing areas, showed differences in the fatty acid pattern, especially with respect to linoleic (30.1-37.45%) and epoxyoleic (trace to 5.3%). The results showed different values from those previously reported for the cyclopropenoid fatty acid, found to be malvalic acid (0.4-2.0%), responsible for the positive Halphen response of the oil. It is now also established that the oil contains dihydrosterculic acid (1.0-1.6%) which has been reported previously in other species of the genus Hibiscus. The results of the rest of fatty acids showed ranges for myristic 0.2-0.5%, palmitic 17.4-22.6%, stearic 3.9-5.2% and oleic acid 34.6-39.8%.     

气质联用法分析辣椒籽油的化学成分

以超临界CO2提取的辣椒籽油为原料,采用溶液进样和顶空-固相微萃取方式进样,结合GC-MS分析,同时鉴定出主要化学成分和挥发性成分。研究结果表明:超临界CO2提取辣椒籽油中共鉴定出62种成分,主要化学成分为亚油酸、油酸、棕榈酸、辣椒碱、二氢辣椒碱、硬脂酸等,顶空-固相微萃取进样法鉴定出的主要挥发性成分为亚油酸、棕榈酸、顺-2,4a,5,6,7,8,9,9-八氢-3,5,5,-三甲-9-亚甲基-1H-苯并环庚烯、油酸、硬脂酸、异戊酸己酯、异草蒿脑、邻羟基苯甲酸甲酯等。      

茶叶籽油理化特性及脂肪酸组成初步研究

利用索氏抽提法从4种茶叶籽中提取油脂,对茶叶籽油理化特性进行测定,并用气相色谱法测定4种茶叶籽油脂肪酸组成;结果显示,茶叶籽油脂肪酸主要由棕榈酸、硬脂酸、油酸、亚油酸等组成,其中油酸60.89%～64.35%、亚油酸14.41%～20.55%,油酸和亚油酸之和为75.30%～84.90%,表明茶叶籽油具有较高营养价值,开发前景广阔。     

牡丹籽油甘油三酯结构及理化特性分析

利用压榨法提取牡丹籽毛油,采用国标方法分析其基本理化指标,采用柱层析提纯牡丹籽油的甘三酯,利用气相色谱、牛胰脂酶水解法分析牡丹籽油的脂肪酸组成及甘油三酯结构,并利用拉曼光谱分析其官能团结构。结果表明,牡丹籽毛油的基本理化指标符合国标对原油的要求。牡丹籽毛油的脂肪酸共12种,主要包括亚麻酸(40. 33±1. 01 g/100 g)、亚油酸(21. 08±0. 61 g/100 g)、油酸(15. 67±0. 59 g/100 g)、棕榈酸(7. 59±0. 46g/100 g)、硬脂酸(4. 11±0. 41 g/100 g);总不饱和脂肪酸含量达(77. 51±0. 68) g/100 g。牡丹籽毛油甘三酯中三不饱和脂肪酸甘油三酯的相对含量最高,为79. 68%,其中以Sn-LOLn相对含量最高,为15. 64%,其次是SnLn OLn,相对含量为14. 77%。此外,拉曼光谱分析显示牡丹籽油是一种不饱和程度极高的食用植物油且几乎不含反式脂肪酸。     

牡丹籽油化学成分及功能研究进展

综合介绍了牡丹籽油的化学成分,包括脂肪酸组成、不皂化物组成以及微量元素,并对其抗氧化、保肝、降血脂、降血糖等营养保健功能及食用安全性进行综述分析,以期为牡丹籽油的深入开发提供借鉴。     

牡丹籽油的理化指标和脂肪酸成分分析

用索氏提取法获得牡丹籽油,经皂化、甲酯化后用毛细管GC-MS法对其脂肪酸成分进行分析,面积归一化法计算相对含量,同时按国家标准对牡丹籽油的理化指标进行了检测.结果表明,牡丹籽油中共有17种脂肪酸成分,主要为亚麻酸、油酸、亚油酸等,不饱和脂肪酸占83.05%,饱和脂肪酸占14.33%;牡丹籽油的酸值(KOH)为1.784 mg/g,碘值(I)为176.2 g/100 g,皂化值(KOH)为194.4 mg/g,相对密度0.930 7.说明牡丹籽是一种良好的油料资源,适宜开发利用.