范燕青,郭智军,张 炜,陈元涛,刘 霞,池亚玲,徐江波,肖 江,赵文华
(青海师范大学互助青稞研究与开发中心,青海西宁810008)
亚麻籽胶为壁材制备枸杞油微胶囊的研究
范燕青,郭智军,张 炜,陈元涛,刘 霞,池亚玲,徐江波,肖 江,赵文华
(青海师范大学互助青稞研究与开发中心,青海西宁810008)
采用喷雾干燥法制备枸杞油为芯材、亚麻籽胶为壁材的微胶囊,并以微胶囊化效率和含油率为考察指标,考察了制备工艺。结果表明,最佳微胶囊原料配方为:壁材与芯材的比例为(m∶m)2∶3;最佳喷雾干燥工艺条件:进风温度为180℃,出风温度为70℃,雾化器转速24000r/min,进料速度为46.21mL/min。在此工艺条件下枸杞油的微胶囊化效率为93.29%,含油率为45.62%。
亚麻籽胶,枸杞油,喷雾干燥
Abstract:The microencapsulation of lycium oil was prepared with the spray drying method using lycium oil as core material and flaxseed gum as wall material.The effect factor of preparing lycium oil microcapsule had been investigated in detail according to microencapsulation efficiency and the ratio of oil content.The result showed that best material compositions for microencapsulation were as follows:wall material/core material(m∶m) 2∶3.Optimal spray drying processing conditions were determined as follows,the air temperature at the inlet was 180℃,and at the exit was 70℃,the rotating speed of centrifugal atomizer was 24000r/min,and liquid feed rate was 46.21mL/min.The content of microencapsulation efficiency was 93.29%and the ratio of oil content was 45.62%.
Key words:flaxseed gum;lycium oil;spray drying
枸杞系茄科枸杞属,是重要的经济植物资源。枸杞为鲜明橙红色小果,内有许多小籽,即枸杞籽。利用枸杞籽提取枸杞油是一项很有价值的综合利用措施。经测试,枸杞油中超氧化歧化酶(SOD)含量极高,还含有大量的不饱和脂肪酸及脂溶性维生素,其中亚油酸含量占66.5%[1]。亚油酸的主要功效在于降低血浆胆固醇,减少血管壁中胆固醇含量,防止高血脂及动脉粥样硬化症,促进儿童大脑发育等[2-3]。从目前的消费习惯看,现有的枸杞油产品已不能满足市场多元化需求,这就为枸杞油的加工提出了新的要求。微胶囊技术可以改变物质形态、保护敏感成分和隔离活性物质等[4-5]。枸杞油微胶囊既保持了枸杞的有效成分和原有风味,又避免了霉烂虫蛀,使用方便,还可以避免油脂的氧化变质[6-8],具有较好的发展前途[9]。……