共查询到18条相似文献,搜索用时 62 毫秒
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以鱼油作为芯材,壳聚糖(Ch)和大豆分离蛋白(SPI)作为壁材,采用复凝聚法制备鱼油微胶囊。采用单因素实验考察均质速度、pH、芯壁比、壁材总质量分数、SPI溶液与Ch溶液体积比及固化时间对鱼油微胶囊包埋效果的影响,在此基础上,采用正交实验对工艺条件进行优化。结果表明:最佳工艺条件为均质速度8 000 r/min、pH 7. 0、壁材总质量分数2. 5%、SPI溶液与Ch溶液体积比7∶3、芯壁比1∶3、固化时间4 h;在最佳工艺条件下,鱼油微胶囊包埋率为90. 21%,包埋效率为99. 04%,表面油含量为4. 87%。通过不同温度下过氧化值变化和气味分析,表明微胶囊化能显著延缓鱼油氧化,同时有效地弱化鱼油的气味。 相似文献
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以大豆蛋白制备微胶囊化鱼油的研究(Ⅱ)——微胶囊化鱼油的工艺研究 总被引:1,自引:0,他引:1
研究喷雾干燥法制备高包埋量微胶囊化鱼油的工艺条件。探讨了乳化温度、均质压力、均质次数和喷雾干燥进风温度、出风温度对微胶囊化效果的影响。经过正交试验,确定了最佳工艺条件。扩大试验和产品超微结构的观察证实了壁材配方和加工工艺的合理性。 相似文献
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为提高鱼油稳定性,以青鱼内脏鱼油为芯材,大豆分离蛋白(SPI)和壳聚糖(CS)为壁材,制备鱼油微胶囊。采用单因素实验考察了均质速度、pH、壁材总质量分数、SPI/CS比值、芯壁比等因素对鱼油微胶囊制备效果的影响,结合响应面法优化鱼油微胶囊制备工艺,并比较研究了鱼油微胶囊湿囊分别经喷雾干燥和冷冻干燥两种干燥方法所得产品的包埋率、水分含量、贮藏稳定性。结果表明,最佳鱼油微胶囊制备工艺条件为:pH7、壁材总质量分数2%、SPI/CS比值1.3∶1、芯壁比1.3∶1,在此条件下鱼油包埋率为71.98%±0.16%。喷雾干燥法表面含油率为0.73%±0.04%,低于冷冻干燥法3.62%±0.09%,包埋率为71.98%±0.16%,高于冷冻干燥法56.76%±0.37%,说明喷雾干燥法效果优于冷冻干燥法,鱼油微胶囊贮藏期可较未包埋的鱼油延长6 d以上。通过微胶囊化,改善了青鱼内脏鱼油的性能,提高了使用范围和应用价值。 相似文献
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研究喷雾干燥法轩高包埋量微胶囊化鱼油的工艺条件,探讨了乳化温度,均质压力,均质次数和喷雾干燥进风温度,出风温度对微胶囊化效果的影响,经过正交试验,确定了最佳工艺条件,扩大试验和产品超微结构的观察证实了壁材配方和加工工艺的合理性。 相似文献
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Abstract: The stability of microencapsulated fish oil prepared with 2 production processes, spray granulation (SG) and SG followed by film coating (SG-FC) using a fluid bed equipment, was investigated. In the 1st process, 3 types of fish oil used were based on the ratios of eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) (10/50, 33/22, and 18/12). Each type was emulsified with soluble soybean polysaccharide (SSPS) and maltodextrin to produce 25% oil powders. In the 2nd process, 15% film coating of hydroxypropyl betacyclodextrin (HPBCD) was applied to the granules from the 1st process. The powder stability against oxidation was examined by measurement of peroxide values (PV) and headspace propanal after storage at room temperature and at 3 to 4 °C for 6 wk. Uncoated powder containing the lowest concentration of PUFA (18/12) was found to be stable during storage at room temperature with maximum PV of 3.98 ± 0.001 meq/kg oil. The PV increased sharply for uncoated powder with higher concentration of omega-3 (in 33/22 and 10/50 fish oils) after 3 wk storage. The PVs were in agreement with the concentration of propanal, and these 2 parameters remained constant for most of the uncoated powders stored at low temperature. Unexpectedly, the outcomes showed that the coated powders had lower stability than uncoated powders as indicated by higher initial PVs; more hydroperoxides were detected as well as increasing propanal concentration. The investigation suggests that the film-coating by HPBCD ineffectively protected fish oil as the coating process might have induced further oxidation; however, SG is a good method for producing fish oil powder and to protect it from oxidation because of the “onion skin” structure of granules produced in this process. 相似文献
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番茄红素油树脂的制备及微胶囊化 总被引:1,自引:0,他引:1
利用正交试验对番茄红素的提取工艺进行了优化。并且对以大豆蛋白和蔗糖作为壁材,喷雾干燥制备番茄红素微胶囊的工艺进行了探讨。试验结果表明:用CHCl_3提取番茄红素的最佳工艺条件:萃取时间为2h,pH=6.0;温度为25℃;溶剂量为30%,制备微胶囊产品的工艺条件为:壁材采用大豆蛋白和蔗糖(比例为4:6);芯材量为40%;采用复合乳化剂(蔗糖酯和单甘酯),HLB值为13,用量为2%;均质压力为40MPa;喷雾干燥进风温度200℃,出风温度90℃。制备得到的微胶囊产品,效率可达90%以上。 相似文献
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微胶囊化芝麻油的研制 总被引:9,自引:0,他引:9
本研究以大豆分离蛋白、麦芽糊精为壁材,优化确定壁材、心材配方及工艺条件,采用喷雾干燥法对芝麻油进行了微胶囊包埋,并对产品进行了电镜扫描。在此基础上用DSC测定出该壁材的玻璃化温度为64.6℃,从而为该产品的常温储藏提供了理论依据。 相似文献