栀子油脂制取亚油酸的研究

用气相色谱法分析了栀子果实油脂中主要脂肪酸的组成,软脂酸和亚油酸发别占总脂肪酸的25．5％和71．8％,栀子油脂经皂化,酸化,丙酮溶解,冷冻结晶等工艺可制出符合医药标准的亚油酸,并对工艺参数进行了研究。     

苍耳油制取亚油酸的研究

本文用气相色谱测定苍耳油的组成是软脂酸５．１％．硬脂酸３．６％；油酸２６．８％：亚油酸６４．１％；亚麻酸０．４％．苍耳油通过皂化，酸化，冷冻结晶等工艺制出符合医药标准的亚油酸．并对这些工艺参数进行了考察．     

红花油制取共轭亚油酸的研究

以新疆克拉玛依厂的红花油为原料,以丙三醇为溶剂,在KOH的碱性催化作用下,将红花油先转化成亚油酸钾;再利用异构化反应制得浅黄色的共轭亚油酸产品。对产品进行了薄层层析法和紫外分光光度法定性分析,并定量分析了红花油异构化反应的程度。本研究对红花油的深加工将起到很好的推动作用。     

油脂和油脚制取透明皂的研究

利用油脚代替部分油脂制取透明皂，以此提高油脚利用率,降低了透明皂的生产成本，改善了透明皂的性能。     

油脂和油脚制取透明皂的研究

利用油脚代替部分油脂制取透明皂 ,以此提高油脚的利用率 ,降低了透明皂的生产成本 ,改善了透明皂的性能     

嗜酸乳酸杆菌转化亚油酸为共轭亚油酸工艺条件的研究

对嗜酸乳酸杆菌转化亚油酸为共轭亚油酸的工艺条件进行了优化,其优化的工艺条件为:亚油酸与发酵液的比例为0.1%(体积比)、反应温度36℃、培养时间36 h、pH值6.0,此时共轭亚油酸的产率达37.85%.同时对共轭亚油酸异构体的组成进行了气相色谱分析.     

微生物油脂制取生物燃料研究进展

随着化石燃料短缺和环境污染问题的日益严重,可再生能源的重要性不断凸显.其中,生物燃料受到越来越多的关注.利用微生物制取生物燃料是当下流行的技术路线之一.微生物油脂因原料来源广泛、生产工艺简单等优势,国内外学者对其进行了广泛深入的研究.本文总结了产油微生物菌体培育技术、微生物菌体破壁技术和微生物制备生物燃料技术,为产油微...     

共轭亚油酸盐的研究进展

本文通过共轭亚油酸的结构、生理功能,引出了共轭亚油酸盐的应用。并分别从共轭亚油酸的钙盐、锌盐、镁盐、钠盐和钾盐的应用出发综述了近年来有关共轭亚油酸盐的研究进展,阐述了其广泛的开发应用前景。     

高纯度共轭亚油酸的规模化制备及其异构体的鉴定

Conjugated linoleic acid(CLA)is a kind of fatty acid with physiological activities and potential appli-cation prospect ,A synthesis method of conjugated linoleic acid and a purification technology were studied .CLA was prepared and purified by urea-complexation and conjugation using safflower oil as raw material,The purity of CLA and total recovery of the product was more than 95% and 48%,respectively,The main isomers produced in alkali-catalyzed conjugation were identified by gas chromatography (GC)linked to mass spectrometry(MS) and Fourier transform infrared spectroscopy(FTIR),The total amount of the two main isomers (9cis,11trans-and 10trans,12cis-CLA) determined by GC was more than 90% of the product.     

从山苍子核仁油中提取各种脂肪酸的研究

山苍子核仁油是由山苍子核经生胚直接浸出法制得。其经酸炼、皂化、酸化、水解、水洗、真空精馏等工序即得系列中碳脂肪酸。C_(10)得率为3.0％～7.5％,C_(12)得率为3.5％～12.7％,产品质量好,环境污染小。指出在制取癸酸、月桂酸、C_(16)～C_(18)皂用酸等时,山苍子核仁油可以替代椰子油,既利用了野生资源,又减少了环境污染。     

麻疯油制备生物柴油过程中固体酸催化剂的研究

利用高酸值麻疯油中游离脂肪酸与甲醇预酯化反应作为目标反应,通过对几类固体酸（Hβ、HM、SAPO-11、HZSM-5分子筛,D72、DOO5-Ⅱ阳离子交换树脂,ST-Ⅰ、SZ、ST-Ⅱ固体超强酸,TiO2、ZrO2氧化物）的筛选,得到了原料廉价、制备简单、酯化活性高的ST-Ⅱ系列固体酸。固体酸酸强度和酸量的测定表明：对于高酸值麻疯树油中游离脂肪酸与甲醇的预酯化反应,-12.70≤H0≤0.8范围的酸中心具有较好的催化活性。     

香榧种子含油量及脂肪酸组成对比研究

为探究不同品种香榧种子含油量及组成的差异,对同一产地不同品种的11种香榧（旋纹榧、茄榧、大圆榧、米榧、象牙榧、芝麻榧、普通榧、木榧、小圆榧、炭盆榧和寸金榧）种子的含油量以及种子油脂肪酸组成进行了对比研究,结果表明：不同品种的香榧种子含油量及种子油脂肪酸类型都表现出明显差异。11种不同香榧种子含油量约2%~14%,普通榧最高（13.4%）,炭盆榧最低（2.2%）;脂肪酸种类最少8个,最多13个（寸金榧和木榧）。香榧种子油以不饱和脂肪酸为主,其总量超过66%。普通榧不饱和脂肪酸总量达到85.87%,其中主要成分油酸、亚油酸总量超过72%。所有品种的香榧种子油都含有超过6.90%的特殊脂肪酸金松酸,而且以普通榧中含量最高,达到10.41%。     

Optimizing Conditions for the Purification of Linoleic Acid from Sunflower Oil by Urea Complex Fractionation

The separation and purification of linoleic acid (LA) from sunflower seed oil by urea complex fractionation was studied. Crystallization reaction conditions of urea inclusion were optimized using the response surface method, and the optimal model was developed. Using the linear weighting method of the fitting model for optimization, the optimal balance between the purity and the recovery of LA was obtained. Under optimal conditions, the purity of LA was 87.8%, and the recovery was 83.4% at a urea-to-fatty acids ratio (w/w) of 0.94, 95% ethanol-to-urea (v/w) of 5.00, a crystallization temperature of 18.0 °C, and a crystallization time of 5.0 h. Verification results revealed that the predicted values from these models were reasonably close to the experimentally observed values.     

Effect of UV Processing Treatments on Soy Oil Conjugated Linoleic Acid Yields and Tocopherols Stability

Photoirradiation has been used to synthesize 20 % conjugated linoleic acid (CLA) in soy oil with an iodine catalyst. CLA yields are affected by ultraviolet (UV) irradiation time, Magnesol^® adsorbent treatment, iodine concentration and mixed tocopherols. However, these factors in combination had not been studied. Therefore, the objectives of this study were to determine the effect of (1) a combination of photoirradiation time, Magnesol^® adsorbent treatment and added mixed soy tocopherols on CLA yields and the oxidative stability of CLA-rich soy oil, (2) UV light on mixed tocopherol stability, as tocopherols enhance CLA yields during photoirradiation. Soy oil was initially treated with 5 % Magnesol^®. Iodine at 0 and 0.35 % was mixed with Magnesol^®-treated soy oil and irradiated for 12 and 6 h. The irradiated oil was again treated with Magnesol^®, mixed with 0, 0.35 or 0.175 % iodine; 1400 MT and irradiated for 12 or 6 more hours. CLA content in soy oil was determined by conventional gas chromatography-flame ionization detector. The oxidative stability of the oil was determined by measuring peroxide value (PV). The tocopherols stability was determined by high performance liquid chromatography. The results showed that increasing photoirradiation time increased CLA yields and lowered PV. Magnesol^® adsorption produced highest CLA yield for all treatments by removing peroxides in RBD soy oil. The γ-tocopherols exhibited highest stability during UV irradiation. The order of tocopherol degradation was α-tocopherol > δ-tocopherol > γ-tocopherols.     

天然植物油碱性异构为共轭亚油酸的制备条件优化

采用KOH为催化剂,丙二醇为溶剂,天然植物油为原料,碱性异构法转化为共轭亚油酸。根据二次正交组合实验设计,研究了反应温度、反应时间、天然植物油用量等诸因素的一次、二次及其交互作用对共轭亚油酸选择性的影响,得到相应数学模型和适宜的制备条件:当m(丙二醇)∶m(KOH)=3∶1,搅拌速度500r min时,氮气保护,最适反应温度173 5℃,最佳反应时间2 85h,最优配方m(天然植物油) m(KOH)=1 55,此时共轭亚油酸的选择性≥93 6%。