肉桂叶水扩散蒸馏提取肉桂油的研究

以肉桂叶为原料,在5 L不锈钢蒸馏釜中采用水扩散蒸馏提取肉桂油,考察了蒸馏时间、投料量、进口压力3个因素对肉桂油得油率的影响。结果表明,水扩散提取的适宜条件为:蒸馏时间90 min,投料量200 g/L,蒸汽进口压力为1 750 Pa,此时得油率为8.88‰,肉桂油的主要成分为肉桂醛(86.89%)、苯甲醛(1.55%)、乙酸肉桂酯(3.92%)、邻甲氧基肉桂醛(4.56%)。     

以肉桂油为溶剂的溴氰菊酯水乳剂研究

研制以肉桂油为溶剂的5%溴氰菊酯水乳剂配方,探究其最优加工工艺。以水乳剂稳定性为考察指标,筛选出5%溴氰菊酯水乳剂最优配方为5%溴氰菊酯、20%肉桂油、4%乳化剂33#、2%乳化剂601P、3%丙二醇、0.1%有机硅消泡剂,水补足至100%。以微量点滴法对5%溴氰菊酯水乳剂进行室内毒力测定,其对甜菜夜蛾4龄幼虫的LC50为3.982 mg/L。     

高效节能提取肉桂油新工艺研究

本文对以肉桂枝叶为原料，添加蒸煮助剂，进行常压和加压，单锅和串锅蒸馏及以高效油水分离提取肉桂油等进行了试验研究，从而得到了提高肉桂油的得油率，并降低生产能耗和缩短生产期的新工艺。     

高效节能提取肉桂油新工艺的研究

本文介绍在利用肉桂枝、叶提取肉桂油过程中，添加复合助剂对原料进行预处理，采用水中蒸煮或水蒸气蒸馏工艺，进行单锅或多锅串联蒸馏，并采用高效油水分离技术，提高肉桂油产品得率和质量，节约能源，降低成本。本工艺技术适用于山区土法生产，也适用于工业化生产。     

肉桂油提取条件的探索研究

对水蒸气蒸溜提取肉桂油的条件进行了探索,并对工业生产线得到的水蒸气蒸馏肉桂油馏出液进行复蒸。结果表明： 1 600 kg肉桂枝叶,以12 kg/min蒸汽量的水蒸气、蒸馏2.0 h为最佳,所用时间较短,复馏处理量较小,肉桂油提取得率为1.18%。3个批次的复蒸得到的肉桂油均占总得率的60%以上,表明肉桂油芳香水中肉桂油含量相当可观,而且肉桂醛含量高,可高达89.2%。     

水酶法提取显齿蛇葡萄籽油及其微胶囊化研究

以显齿蛇葡萄籽为原料,通过单因素试验和响应面分析法对水酶法提取显齿蛇葡萄籽油的工艺进行研究。结果表明,水酶法提取显齿蛇葡萄籽油的较佳工艺为:液料比(m L/g)为12.6,中性蛋白酶的质量分数为1.4%,酶解温度为52.0℃,酶解时间为3.2 h,此条件下显齿蛇葡萄籽油提取率达到10.30%。以大豆分离蛋白和麦芽糊精为壁材,通过正交试验对显齿蛇葡萄籽油微胶囊化的工艺进行研究。结果显示,显齿蛇葡萄籽油微胶囊化的较佳条件为:壁材的质量分数为13%,芯材壁材质量比为1∶6,喷雾干燥器进、出风口温度分别为125和62℃,均质压力为28 MPa,此条件下显齿蛇葡萄籽油微胶囊化包埋率为92.3%。     

高效节能提取肉桂油新工艺的研究

本文介绍在利用肉桂枝、叶提取肉桂油过程中，添加复合助剂对原料进行预处理，采用水中蒸煮或水蒸气蒸馏工艺，进行单锅或多锅串联蒸馏，并采用高效油水分离技术，提高肉桂油产品得率和质量，节约能源，降低成本。本工艺技术适用于山区土法生产，也适用于工业化生产。     

用双锅串联蒸馏法提取肉桂油

从桂树的树皮，枝，叶中提取肉桂油，一般都采取单锅蒸馏的方法。本文介绍一种经技改后的，用双锅串联蒸馏的方法，节省能，操作稳定，效果良好。     

水酶法提取大豆油

The procedure of enzymatic aqueous extraction of soybean oil was assessed when two-step controlled enzymatic hydrolysis was applied. With aqueous extraction of soybean oil-containing protein, the highest yield of oil was 96.1% at the optimized conditions studied. Soybean oil-containing protein was hydrolyzed and resulted in releasing part of oil. The separated protein that contained 40% oil was enriched due to its adsorption capacity of released oil, the average oil extraction yeild reached 93.5%. Then the high oil content protein was hydrolyzed again to release oil by enzyme, the oil extraction yeild was 80.4%. As a result, high quality of soybean oil was obtained and the content of total oil vield was 74.4%.     

用双锅串联蒸馏法提取肉桂油

从桂树的树皮、枝、叶中提取肉桂油，一般都采取单锅蒸馏的方法。本文介绍一种经技改后的、用双锅串联蒸馏的方法，节省能耗，操作稳定，效果良好。     

Ethanol-Assisted Aqueous Enzymatic Extraction of Peony Seed Oil

An ethanol-assisted aqueous enzymatic extraction was performed for peony seed oil (content of 30%). This method included cooking pretreatment, pectinase hydrolysis, and aqueous ethanol extraction, and the corresponding variables in each step were investigated. The changes in viscosity and dextrose equivalent values of the reaction medium as a function of changing enzymatic hydrolysis time were compared to the oil yield. The microstructures of peony seeds were analyzed using confocal laser scanning microscopy to understand the process of oil release as a result of cooking and grinding. The highest oil yield of 92.06% was obtained when peony seeds were cooked in deionized water with a solid–liquid ratio of 1:5 (w/v) at 110°C for 1 hour, ground to 31.29 μm particle size, treated with 0.15% (w/w) pectinase (temperature 50°C, pH 4.5, time 1 hour), and then extracted with 30% (v/v) aqueous ethanol (temperature 60°C, pH 9.0, time 1 hour). After processing with pectinase followed by ethanol extraction, the residual oil content in water and sediment phase decreased to 5% and 3%, respectively. The quality of the oil obtained by ethanol-assisted aqueous enzymatic extraction was good, complying with the Chinese standard.     

超临界CO2流体萃取肉桂油的研究

优选萃取肉桂油的工艺条件,分别采用水蒸汽蒸馏法和SFE—CO2提取肉桂油,进行SFE—CO2萃取肉桂油的正交试验,优选最佳萃取条件。由实验可知,SFE—CO2萃取肉桂油主要成分桂皮醛的得率大于水蒸汽蒸馏法,其最佳萃取条件为：萃取温度45℃,萃取压力20MPa,萃取时间2．5h。应用SFE—CO2萃取肉桂油,萃取率高,操作纯净,是具有相当发展潜力的提取分离方法。     

Optimization of the Aqueous Enzymatic Extraction of Rapeseed Oil and Protein Hydrolysates

An aqueous enzymatic extraction method was developed to obtain free oil and protein hydrolysates from dehulled rapeseeds. The rapeseed slurry was treated by the chosen combination of pectinase, cellulase, and β-glucanase (4:1:1, v/v/v) at concentration of 2.5% (v/w) for 4 h. This was followed by sequential treatments consisting of alkaline extraction and an alkaline protease (Alcalase 2.4L) hydrolysis to both produce a protein hydrolysate product and demulsify the oil. Response surface methodology (RSM) was used to study and optimize the effects of the pH of the alkaline extraction (9.0, 10.0 and 11.0), the concentration of the Alcalase 2.4L (0.5, 1.0 and 1.5%, v/w), and the duration of the hydrolysis (60, 120, and 180 min). Increasing the concentration of Alcalase 2.4L and the duration of the hydrolysis time significantly increased the yields of free oil and protein hydrolysates and the degree of protein hydrolysis (DH), while the alkaline extraction pH had a significant effect only on the yield of the protein hydrolysates. Following an alkaline extraction at pH 10 for 30 min, we defined a practical optimum protocol consisting of a concentration of 1.25–1.5% Alcalase 2.4L and a hydrolysis time between 150 and 180 min. Under these conditions, the yields of free oil and protein hydrolysates were 73–76% and 80–83%, respectively. The hydrolysates consisted of approximately 96% of peptides with a MW less than 1500, of which about 81% had a MW less than 600 Da.     

药用肉桂油精馏提纯生产工艺分析

通过分析影响药用肉桂油精馏提纯的关键生产要素,探讨最佳生产工艺,指导精馏提纯的工业化生产,以提高产品得率和产品质量。     

胶束催化肉桂油水解制备苯甲醛

用微量量热法研究了十二烷基硫酸钠(SDS)和十六烷基三甲基溴化铵(CTAB)胶束对天然肉桂油碱性水解的催化作用,并考察了反应温度、时间、pH对该水解反应的影响。实验室实验及工厂放大实验结果表明,当反应温度为368-375 K、选择碳酸钠和三乙醇胺为混合碱调节pH=10、m(肉桂醛)∶m(水)=1∶4、c(CTAB)=2.03×10-3mol/L、反应时间14 h时,苯甲醛得率最高达61%。     

Extraction and Demulsification of Oil From Wheat Germ,Barley Germ,and Rice Bran Using an Aqueous Enzymatic Method

An aqueous enzymatic method was developed to extract oil from wheat germ. Wheat germ pretreatment, effect of various industrial enzymes, pH, wheat germ to water ratio, reaction time and effect of various methods of demulsification, were investigated. Pretreatment at 180 °C in a conventional oven for 4 min reduced the moisture 12.8–2.2 % and significantly increased the oil yield. Adding a combination of protease (Fermgen) and cellulase (Spezyme CP) resulted in a 72 % yield of emulsified oil from wheat germ (both commercial and laboratory milled wheat germ). Using the same oil extraction conditions optimized for wheat germ, yields of 51 and 39 % emulsified oil were obtained from barley germ (laboratory milled), and rice bran, respectively. Three physical demulsification methods (heating, freeze-thawing, and pH adjustment) and enzymatic methods (Protex 6L, Protex 7L, Alcalase, Fermgen, Lysomax and G-zyme 999) were compared. After demulsification with Protex 6L, free oil yields of 63.8 and 59.5 % were obtained with commercial wheat germ and with laboratory milled wheat germ, respectively. Using the same demulsification conditions optimized for wheat germ, yields of 45.7 % emulsified oil and 35 % free oil were obtained for barley germ and rice bran, respectively.