磷脂加脂复鞣剂PMS的制备

以丙烯酸和马来酸酐为原料合成出了一种共聚物。用该共聚物对磷脂进行酰化，制备出了一种新的加脂复鞣剂。应用研究结果表明，该加脂复鞣剂具有良好的乳化性能和乳液稳定性，用于铬复鞣或加脂工序，能增加革的丰满度、柔软度、抗张强度和伸长率。当用于铬复鞣工序时，还能大幅度提高铬的吸收率。     

大豆磷脂改性及其改性技术分析

该文介绍几种重要大豆磷脂改性技术并对其技术途径进行简要分析。     

磷脂复鞣加脂剂的研制

以丙烯酸及其衍生物为原料合成出了一种活性低聚物。将该低聚物与磷脂缩合，制备出了一种复鞣加脂剂。应用研究结果表明，该复鞣加脂剂具有良好的乳化性能和乳液稳定性，用于铬复鞣或加脂工序，能增加革的丰满度、柔软度、抗张强度和伸长率。当用于铬复鞣工序时，还能大幅度提高铬的吸收率。     

大豆粉末磷脂制备方法研究现状

该文综述大豆粉末磷脂制备方法研究现状,重点介绍溶剂萃取法、超临界萃取法和膜分离法制备粉末磷脂现状,比较各种方法优缺点,指出膜超滤技术是一种安全、高效、便于工业化应用方法,是一种制备粉末磷脂重要方向性技术。     

A study of various chemical pretreatments to fractionate lipids from whey protein phospholipid concentrate

Dairy-derived lipids such as phospholipids (PL) have been gaining interest due to their functional and nutritional properties. Our research goal was to develop a separation process (nonsolvent based) to produce an enriched dairy lipid fraction from whey protein phospholipid concentrate (WPPC). Various chemical pretreatments (i.e., adjustment of pH, calcium, or temperature) were applied to rehydrated commercial WPPC solutions. These treatments were done on a bench-top scale to aid in the precipitation of proteins or PL. The chemically treated solutions were centrifuged and fractionated into the following 3 layers: (1) top fat layer, (2) supernatant in the middle zone, and (3) sediment at the bottom of the centrifuge tubes. The thickness and size of the layers varied with the treatment parameters. Compositional analysis of each layer showed that the proteins, fat, and PL always appeared to fractionate in similar proportions. The proteins in each layer were characterized using sodium dodecyl sulfate–PAGE under reducing and nonreducing conditions. Different proteins including whey proteins, caseins, and milk fat globule membrane proteins and lipoproteins were identified, and no specific type of protein had an affinity for either the top or bottom layer. All types of proteins were present in each of the layers after centrifugation, and there were no major differences in fractionation of the proteins between layers with respect to the chemical treatment applied. The microstructure of protein and fat in WPPC was investigated using confocal laser scanning microscopy. Dual staining of the rehydrated WPPC solution with Fast Green FCF (proteins) and Nile Red (lipids) showed the presence of very large protein aggregates that varied in size from 20 to 150 μm, with fat trapped within these aggregates. The confocal laser scanning microscopy images of liquid WPPC revealed fine strands of a weak protein network surrounding the fat globules. This indicated that there were specific interactions between the proteins, as well as between the fat and proteins in WPPC. Sodium dodecyl sulfate treatment was performed to understand the nature of the interactions between protein and fat. We found that about 35% of the fat present in WPPC was in the form of free fat, which was only physically entrapped within the protein aggregates. The remaining fat had some form of association with the proteins in WPPC. Other fractionation techniques would be needed to obtain an enriched dairy lipid fraction.     

复合型磷脂加脂剂PPC的研制

介绍了利用天然大豆磷脂、合成磷酸酯、亚硫酸化油等制备复合型磷脂加脂剂的方法及其性能。     

磷脂加脂剂的综述与探讨

本文分析了天然磷脂的来源及化学组成，并对利用磷脂制备皮革加脂剂的方法及涉及到的问题进行了讨论，提出了进一步利用磷脂的设想。     

商品改性大豆磷脂应用

该文介绍几种重要商品改性大豆磷脂应用状况,并对改性大豆磷脂应用前景进行展望。     

新菜籽油水化脱胶难的原因及对策

论述了磷脂的类型、结构特点以及非水化磷脂的存在形式,明晰了新菜籽油水化脱胶难的根本原因在于其含有较多的非水化磷脂.在理论分析和生产实践经验的基础上,提出了根据菜籽及菜籽油不同情况脱除非水化磷脂的有效方法.     

脂类加脂剂研究文献综述

本文分析了天然磷脂的化学结构及来源，对不同种类的磷酸酯加脂剂的制备方法、特点、应用情况进行了综述和讨论，并对进一步开发磷酸酯加脂剂提出了建议。     

HPLC法测定大豆磷脂中卵磷脂含量

应用Lichrosorb si60(5μm)250×4mm色谱柱,乙腈甲醇水(652114v／v)为流动相外标法测定了大豆磷脂中卵磷脂含量、卵磷脂检测线性范围为0．04～0．8mg／ml,r=0.9996,方法的回收率为98．35％,RSD为6．94％(n=6)。     

大豆磷脂的应用

我国大豆磷脂资源丰富、原料价格低廉,但未被充分利用。本文叙述了三个问题,提高大豆浓缩磷脂质量的注意事项、大豆磷脂改性后HLB等的变化以及大豆磷脂在多种行业上的应用。     

磷脂提纯技术研究进展

磷脂具有良好生理功能及乳化、润湿、渗透等特性,近年来,高纯度磷脂产品在食品、医药卫生及化妆品工业中需求很大;国内外对磷脂提纯研究方法很多,该文综述溶剂萃取法、超临界二氧化碳萃取法、色谱分离法、膜分离法、无机盐复合沉淀法、乙酰化法、酶催化法、冷冻法等提纯方法研究进展情况。     

大豆油酶催化脱胶初探

利用特殊的生物化学反应——酶催化水解磷脂分子,采用 Ｎ Ｏ Ｖ Ｏ（丹麦）公司 Ｌｅｃｉｔａｓｅ１０ Ｌ,初探了大豆油酶催化脱胶的可行性。通过对酶浓度、反应温度、反应时间、水相量、激活剂 Ｃａ浓度、缓冲液浓度等多项单因素试验以及酶浓度,反应时间,水相量为三因素的正交试验,得出大豆油酶法脱胶的最佳工艺条件：酶活度量 ２０ Ｉ Ｕ／ｍ ｌ 油,水相量 ０２％ （按油体积计算）,反应温度５０℃。反应结果,含磷小于 １０ ｍ ｇ／ｋｇ。     

磷脂结构、性质、功能及研究现状(1)

该文较系统介绍磷脂的性质,种类,不同种类磷脂的生物学功能与应用,高品质磷脂制备方法进展;并对各种磷脂在医药、食品和非食品上应用进行较详细归纳总结,最后针对我国是磷脂大国现状,提出加强磷脂研究重要性。     

高度乙酰化大豆磷脂的制备工艺研究

采取萃取的方法制得高纯度大豆浓缩磷脂,再通过乙酰化的方法对其进行改性研究,最佳工艺条件为:正己烷1.5mL/g,乙醇1mL/g,乙酸酐用量3%,温度60～70℃,时间40min,pH7.0,搅拌速度30r/min,得高度乙酰化磷脂,其丙酮不溶物含量56%,水分0.75%,酸价35mg/g,粘度2900mPa.s(25℃),氨基氮含量1.0mg/g。     

大豆油脂生产中磷脂成分变化的探讨

通过对大豆预处理过程各中间产物所得浸出毛油及水化脱胶油磷脂含量的测定,了解预处理过程中磷脂含量及成分的变化情况;探讨磷脂各组分含量变化的影响因素,以及降低浸出毛油中非水化磷脂含量的措施。     

缩醛磷脂制备及其生物功能研究进展

缩醛磷脂是甘油骨架sn-1位上含有一个烯醚键的磷脂,主要存在于哺乳动物组织中,其能保持膜稳定性,具有潜在信息传导及抗癌和抗氧化作用;且其含量变化也与许多疾病有关。该文介绍缩醛磷脂制备方法及其生物功能研究进展。     

磷脂在皮革工业中的应用

本文较全面地阐述了一种天然皮革加脂材料——磷脂的特性及其在皮革工业中的作用、潜在用途和应用须知。并简要地介绍了国内外磷脂加脂剂的开发应用情况。