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《食品工业科技》2017,(21)
微胶囊化蛋黄卵磷脂,可以充分保持蛋黄卵磷脂原有的活性,拓宽其在食品加工中的应用范围。本研究以β-环糊精为壁材,通过包结络合法制备蛋黄卵磷脂微胶囊,选取包埋率作为制备工艺的优化指标,通过单因素和正交实验,分别考察乳化剪切速率、壁材芯材比、单甘酯:蔗糖酯配比及单甘酯:蔗糖酯用量对蛋黄卵磷脂微胶囊包埋效果影响,实验结果表明,蛋黄卵磷脂微胶囊制备最佳工艺条件为:剪切速率5000 r/min,壁材芯材比4∶1,单甘酯、蔗糖酯用量1%,单甘酯、蔗糖酯用量配比为1∶9,在此工艺条件下进行了验证实验,得蛋黄卵磷脂微胶囊包埋率为65.81%±1.65%。因此,β-环糊精可作为蛋黄卵磷脂微胶囊的良好包埋壁材。 相似文献
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目的:优化超声辅助乙醇提取蛋黄卵磷脂的工艺参数,并对提取产品的稳定性和抗氧化活性进行研究。方法:采用响应面方法,优化影响蛋黄卵磷脂的主要参数(液料比、乙醇浓度、时间);运用薄层色谱、红外光谱、气相-质谱联用法分析了卵磷脂结构和脂肪酸组成;并研究了卵磷脂稳定性和抗氧化活性。结果:超声辅助乙醇提取蛋黄卵磷脂最优工艺参数为:液料比15:1 (mL/g),乙醇浓度92%,提取时间22 min。在此条件下,提取所得卵磷脂含量为375.69 mg/g。薄层色谱和红外光谱确定提取物为蛋黄卵磷脂;气相色谱-质谱联用法检测了蛋黄卵磷脂中脂肪酸组成,主要为油酸、亚油酸、硬脂酸和软脂酸。稳定性和抗氧化活性分析表明,光照和温度影响卵磷脂的抗氧化活性和稳定性,蛋黄卵磷脂的稳定性和抗氧化活性优于大豆卵磷脂。结论:超声辅助乙醇法是一种较好的提取蛋黄卵磷脂的方法,本研究成果为蛋黄卵磷脂的提取、贮藏和综合利用提供了一定的技术支持。 相似文献
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目的 优化鸭蛋黄中卵磷脂的提取工艺。方法 无水乙醇:石油醚(2.5:1, V:V)复合溶剂萃取, 协同超声微波处理, 吸附剂进行除杂, 通过单因素实验比较提取次数、丙酮用量、提取时间、提取温度对卵磷脂提取含量的影响, 探讨适宜的提取工艺。结果 蛋壳粉作为吸附剂, 萃取剂为无水乙醇和石油醚, 提取2次, 提取时间40 min, 丙酮用量: 粗提物(3:1, V:V), 提取温度为35 ℃, 提取的卵磷脂含量高达86.7%。结论 蛋壳粉可作为提取蛋黄卵磷脂中替代Al2O3的除杂剂, 此溶剂萃取工艺可从鸭蛋黄中提取含量较高的卵磷脂产品, 可作为无精鸭蛋黄中卵磷脂的粗提工艺。 相似文献
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采用柱层析法对蛋黄卵磷脂纯化工艺进行研究。结果表明,从3种吸附介质中筛选出AB-8大孔吸附树脂为蛋黄卵磷脂的纯化树脂,并通过静态试验得到其对蛋黄卵磷脂的最大吸附率为92. 2%,最佳静态吸附时间是60 min。经过中压制备色谱分离,采用干法上样,用体积分数95%的乙醇洗脱,可得到蛋黄卵磷脂的纯化倍数为4倍,纯度达到83. 1%,回收率为97. 04%。AB-8大孔吸附树脂使用50个操作周期时,卵磷脂吸附率仍在80%以上。表明AB-8大孔吸附树脂纯化蛋黄卵磷脂具有纯化倍数高、回收率高、时间短、重复性好等优点。 相似文献
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为探讨从蛋黄中提取蛋黄卵磷脂的方法。试验以蛋黄为原料,采用有机溶剂和酶解法从蛋黄中提取卵磷脂粗品,然后分别经柱硅胶层析和金属离子沉淀法纯化获得卵磷脂精品,通过测定卵磷脂的含磷量,判断其纯度高低。结果显示:采用有机溶剂法获得蛋黄卵磷脂粗品,然后经柱硅胶层析纯化可获得高纯度蛋黄卵磷脂精品,总得率为8.38%,卵磷脂的含磷量为15.33%。是一种高效、经济的蛋黄卵磷脂提取方法。 相似文献
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为充分利用鮟鱇鱼下脚料资源,探讨鮟鱇鱼加工下脚料卵磷脂的提取工艺流程、最佳提取方法和影响因素,采用溶剂提取法对鮟鱇鱼加工下脚料进行提取,用紫外分光光度法测定含量。由单因素试验和正交试验得出的最佳提取工艺条件是:提取时间120 min,提取温度40℃,乙醇浓度95%,料液比为1∶10(g/mL)。影响因素依次为:提取温度>提取时间>乙醇浓度>料液比。试验方法简单易操作且提取效率高、污染少,是提取鮟鱇鱼下脚料卵磷脂的有效途径。 相似文献
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Marine lecithin was isolated and characterized from squid (Todarodes pacificus) viscera residues deoiled by supercritical carbon dioxide (SC-CO(2)) extraction. SC-CO(2) extraction was carried out to extract the oil from squid viscera at different temperatures (35 to 45 °C) and pressures (15 to 25 MPa). The extraction yield was higher at highest temperature and pressure. The major phospholipids of squid viscera lecithin were quantified by high-performance liquid chromatography (HPLC). Phosphatidylcholine (PC; 80.5% ± 0.7%) and phosphatidylethanolamine (PE; 13.2% ± 0.2%) were the main phospholipids. Thin layer chromatography (TLC) was performed to purify the individual phospholipids. The fatty acid compositions of lecithin, PC and PE were analyzed by gas chromatography (GC). A significant amount of eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) were present in both phospholipids of PC and PE. Emulsions of lecithin in water were prepared through the use of a homogenizer. The oxidative stability of squid viscera lecithin was high in spite of its high concentration of long-chain polyunsaturated fatty acids. PRACTICAL APPLICATION: Squid viscera are discarded as a waste by fish processing industry. Since lecithin from squid viscera contains higher amounts of polyunsaturated fatty acids, it may have promising effect to use in food, pharmaceutical, and cosmetic industries. 相似文献
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对腐败蛋黄卵磷脂的提取工艺进行初步探讨。结果表明,用95%乙醇提取3次获得约含18.5%卵磷脂的粗品卵磷脂,使用5%ZnCl2纯化粗卵磷脂后的回收率约为85.4%,含量达96.8%。薄层色谱分析结果显示自制的卵磷脂与卵磷脂样品Rf值一致。 相似文献
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The present study conducted to develop a natural microemulsion (ME) system for lutein extraction from marigold petals powder (MPP). Using pseudo-ternary phase diagram, a monophasic ME (lecithin:1-propanol: water: sunflower oil, 50:25:5:20 w/w%) was identified. It formed nano-droplets (89 nm), reduced surfactant consumption (90%), and using a five-cycle extraction approach, the extraction capacity vastly improved (91–120% depending on MPP ratio). These findings are unique and very encouraging for the industry to extract lutein using bio-based ME rather than solvent (acetone) extraction. DPPH and ABTS assays also revealed high antioxidant activity of lecithin and lutein. Moreover, lutein microemulsion (LME) showed high DPPH radical scavenging (0.80 mmol TE/g MPP) and total antioxidant activity (14.44 mmol TE/g MPP) likely due to the synergy of lutein with lecithin. Furthermore, the developed plain ME showed Newtonian flow behavior with low viscosity (0.12 Pa·s) which was not affected after being loaded with lutein (0.13 Pa·s). 相似文献