短碳链结构磷脂在Zn-Fe_(3)O_(4)@SiO_(2)催化作用下的制备及其性能  

Preparation and properties of short carbon chain phospholipids catalyzed by Zn-Fe_(3)O_(4)@SiOO_(2)

作　　者：张江华 王婷[1] 姚佳杉 唐晶晶 马佳 张伟 李子轩 周大勇 ZHANG Jianghua;WANG Ting;YAO Jiashan;TANG Jingjing;MA Jia;ZHANG Wei;LI Zixuan;ZHOU Dayong(School of Light Industry and Chemical Engineering,Dalian Polytechnic University,Dalian 116034,Liaoning,China;National Engineering Research Center of Seafood,Dalian Polytechnic University,Dalian 116034,Liaoning,China;Dalian Liaodong Peninsula Beverage Co.,Ltd.,Dalian 116034,Liaoning,China)

机构地区：[1]大连工业大学轻工与化学工程学院,辽宁大连116034 [2]大连工业大学国家海洋食品工程技术研究中心,辽宁大连116034 [3]大连辽东半岛饮品有限公司,辽宁大连116034

出　　处：《精细化工》2023年第5期1113-1122,1154,共11页Fine Chemicals

基　　金：国家自然科学基金(32172168,31801546);辽宁省教育厅科学研究项目(J2020039);辽宁省普通本科高等学校校际合作项目(重大科研项目)(21)。

摘　　要：通过溶胶-凝胶法和浸渍法制备了负载Zn的SiO_(2)包覆Fe_(3)O_(4)(Zn-Fe_(3)O_(4)@SiO_(2)),采用SEM、TEM、XPS、Py-IR、VSM、EDS对其进行了表征。将Zn-Fe_(3)O_(4)@SiO_(2)用于催化大豆卵磷脂(SLs)与短碳链脂肪酸(丙酸和丁酸)间的酸解反应来制备新型短碳链结构磷脂(SCSPLs)乳化剂,并对SCSPLs进行了性能测定。结果表明,核壳结构Zn-Fe_(3)O_(4)@SiO_(2)磁性微球负载了大量的活性组分Zn,因而可高效催化制备SCSPLs,在m(SLs)∶m(C3∶0)∶m(C4∶0)=1∶4∶4、催化剂用量为原料总质量的5%、反应温度为50℃、反应时间为5 h的条件下,SCSPLs的短碳链脂肪酸接入率可高达78.15%±1.08%(丙酸和丁酸的接入率分别为35.43%±0.62%和42.72%±0.55%),且Zn-Fe_(3)O_(4)@SiO_(2)可通过外加磁场进行简单分离,循环5次而无明显失活;与SLs相比,SCSPLs的乳化性、分散性和氧化稳定性均得到很大的提高。Zinc-loaded iron oxide coated with silica(Zn-Fe_(3)O_(4)@SiO_(2))was prepared by sol-gel and impregnation methods,and characterized by SEM,TEM,XPS,Py-FTIR,VSM and EDS for analysis on textural and magnetic properties.The Zn-Fe_(3)O_(4)@SiO_(2)obtained was then used in catalyzing the acidolysis of soybean lecithins(SLs)with short-chain fatty acids(propionic acid and butyric acid)for synthesis of novel emulsifiers of short-chain structured phospholipids(SCSPLs),followed by investigation on the main physicochemical properties of the SCSPLs synthesized.The results showed that the active zinc moieties,loaded in the core-shell Zn-Fe_(3)O_(4)@SiO_(2)magnetic microspheres,effectively facilitated the synthesis of SCSPLs.When the m(SLs)∶m(C3:0)∶m(C4:0)=1∶4∶4,the catalyst dosage was 5%of total mass of raw materials,the reaction temperature was 50℃,and the reaction time was 5 h,the maximum short-chain fatty acid incorporation of SCSPLs reached 78.15%±1.08%with 35.43%±0.62%of propionic acid and 42.72%±0.55%of butyric acid.Meanwhile,Zn-Fe_(3)O_(4)@SiO_(2)could be easily separated with an external magnetic field and be recycled for 5 times without obvious deactivation.Moreover,the targeted SCSPLs showed greatly enhanced emulsifying and dispersing properties,and oxidative stability in comparison to raw SLs.

关 键 词：功能乳化剂 结构磷脂 短碳链 Fe_(3)O_(4)@SiO_(2) 酸解 食品添加剂 

分 类 号：TQ265[化学工程—有机化工] TQ426