玉米淀粉-辛烯基琥珀酸淀粉酯制备亚麻油微胶囊

为了降低生产成本，本文用价格低廉的天然蜡质玉米淀粉（NWMS）替代部分的辛烯基琥珀酸淀粉酯(OSAS)作为壁材，用高速剪切法处理乳液，经喷雾干燥后制备亚麻油微胶囊。将OSAS与NWMS按照5∶0、4∶1、3∶2和 2∶3（OSAS∶NWMS）的比例混合，试验结果表明，混合比例对于微胶囊颗粒的粒度没有显著影响；随着OSAS含量的增加，包埋率逐渐增大，当OSAS与NWMS混合比例为3∶2时，包埋率达到61.45%；随着NWMS含量的增加，微胶囊的含水率增大，表面变得更为光滑。NWMS可与OSAS混合作为亚麻油微胶囊的壁材，以达到降低成本的目的。

Preparation of microcapsules of flaxseed oil by blends of maize starch-octenyl succinic anhydride starch

Mixtures of native waxy maize starch (NWMS) and octenyl succinic anhydride starch (OSAS) were used as wall material to encapsulate flaxseed oil in order to reduce the production costs. The solution of OSAS and NWMS was treated with high-speed shearing, then spray-dried to make microcapsules. OSAS and NWMS were mixed at ratios of 5:0, 4:1, 3:2 and 2:3. Results in this study suggested that: OSAS to NWMS ratio had no effect on particle size; Encapsulation efficiency increased with the increase of OSAS proportion; Encapsulation efficiency of 61.45% was achieved when the ratio of OSAS to NWMS was 3:2. With the increase of NWMS proportion, the particle moisture increased and the particle surface became smoother. The study suggests that the blends of OSAS and NWMS have good potential as wall material for the encapsulation of flaxseed oil to reduce the production costs.