Page 172 - 《精细化工》2020年第12期

第 37 卷第 12 期 精 细 化 工 Vol.37, No.12
2020 年 12 月 FINE CHEMICALS Dec. 2020

香料与香精
氧指示剂在香料微胶囊壁材筛选中的应用

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杨瑞婷 ，周 游 ，李萌婷 ，朱 莉 ，尹学琼 ，王 江
（1.海南大学 海南省精细化工工程技术研究中心，海南 海口 570228；2.海南大学 海口市绿色催化与反
应工程重点实验室，海南 海口 570228）
摘要：以海藻酸钠（SA）、甲基纤维素（MC）、羧甲基壳聚糖（CMC）作为微胶囊壁材，亚甲基蓝（MB）/TiO 2 /
甘油（Gly）作为氧指示剂，制备了 6 种微胶囊氧指示剂复合薄膜。根据氧指示剂复合薄膜激活、回色以及重复
利用性筛选合适的屏氧壁材体系。当 MC 的质量浓度为 20 g/L，MB、TiO 2 、Gly 用量分别为 0.05 g、1.00 g 和
0.50 mL 时，MB/TiO 2 /Gly/MC 氧指示剂复合薄膜光催化激活效率最佳。在空气湿度为 75%、温度为 35 ℃条件
下，MC/SA/MC 和 MC/CMC/SA 氧指示剂复合薄膜在 10 h 的回色率分别为 28.7%和 27.9%，且回色时变化较均
匀；重复使用 3 次，MC/SA/MC 和 MC/CMC/SA 氧指示剂复合薄膜的回色率仅分别下降了 0.85%和 1.65%，说
明这两种壁材体系是屏氧良好的香料壁材。将这两种壁材体系通过喷雾干燥法包埋玫瑰精油芯材制备香料微胶
囊，存放 7 d 后，包埋在 MC/CMC/SA 中的芯材有新物质出现而 MC/SA/MC 中无新物质，说明 MC/SA/MC 体
系对精油有更好的保护作用。
关键词：微胶囊壁材；筛选；氧指示剂；屏氧；香料微胶囊
中图分类号：TQ656 文献标识码：A 文章编号：1003-5214 (2020) 12-2534-07

Application of oxygen indicator in the screening of
wall material of spice microcapsule

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YANG Ruiting , ZHOU You , LI Mengting , ZHU Li , YIN Xueqiong , WANG Jiang
（1. Hainan Provincial Fine Chemical Engineering Research Center, Hainan University, Haikou 570228, Hainan,
China; 2. Key Laboratory of Green Catalysis and Reaction Engineering of Haikou, Hainan University, Haikou 570228,
Hainan, China）
Abstract: Six kinds of microcapsule oxygen-indicating composite films were prepared with sodium
alginate (SA), methyl cellulose (MC), carboxymethyl chitosan (CMC) as wall materials and methylene blue
(MB)/TiO 2/glycerin (Gly) as oxygen indicator. The suitable screen oxygen wall material system was
selected according to the activation, color reversal and reusability of oxygen-indicating composite films.
When the mass concentration of MC was 20 g/L, and the dosage of MB, TiO 2 and Gly was 0.05 g, 1.00 g
and 0.50 mL, respectively, the photocatalytic activation efficiency of MB/TiO 2/Gly/MC oxygen-indicating
composite film was the best. Under the conditions of air humidity of 75% and temperature of 35 ℃, the
color recovery rates of MC/SA/MC and MC/CMC/SA oxygen-indicating composite films at 10 h were
28.7% and 27.9% respectively, and the color changing was relatively uniform. After repeated use for 3
times, the color recovery rates of MC/SA/MC and MC/CMC/SA oxygen-indicating composite films
decreased by only 0.85% and 1.65%, respectively, indicating that these two wall material systems are spice
wall material with good screen oxygen. These two wall material systems were used to embed rose essential
oil by spray drying to prepare spice microcapsules. After 7 days of storage, new substances appeared in the
core material embedded in MC/CMC/SA microcapsule, while no new substances appeared in MC/SA/MC

收稿日期：2020-05-22; 定用日期：2020-07-21; DOI: 10.13550/j.jxhg.20200427
基金项目：国家自然科学基金（21466011）；海南大学科研平台建设项目（ZY2019HN09）；2019 年海南省普通高等学校研究生创新科
研课题（Hys2019-98）
作者简介：杨瑞婷（1995—），女，硕士生，E-mail：527156758@qq.com。联系人：尹学琼（1975—），女，教授，E-mail：yxq88@hotmail.com；
王 江（1971—），男，副教授，E-mail：wangjiang9623@126.com。