Description Detail

Vol.18, No.2(2011-)(178) 
Preparation and Controlled Release Properties of Alginate Microcapsules Encapsulated Citronella Oil
海藻酸鈣包覆香茅油微膠囊之製備及其釋放性之探討
Y. H. Lai, C. Y. Chen* , C. P. Chang
賴育辰, 陳忠益, 張志鵬
In this study, we use coacervation method, one of the microencapsulation to prepared microcapsules. The alginate acid was used as shell material, citronella oil as core material. The result shows, 2% alginate acid used 0.1% CaCl2 cross-linking has good formation. Without adding emulsifier Arlacel83 in speed 6000rpm, 10000rpm and 14000rpm, the average diameter of microcapsules were 7.37 ± 0.55μm, 4.53 ± 0.35μm and 1.38 ± 0.1μm; the added emulsifier Arlacel83, the average particle size of microcapsules were 2.84 ± 0.22μm, 0.73 ± 0.06μm and 0.28 ± 0.02μm, and the emulsion was better. Added emulsifier Arlacel83 and without added emulsifier Arlacel83 average particle size was significantly smaller trend and the encapsulation rate of 97% more above. Release rate at different speed on the impact in the final release time to 6000rpm for the longest.
本研究以植物萃取之香茅精油為芯材,海藻酸鈉為殼材,利用微膠囊包覆技術中的凝膠法製備微膠囊。實驗結果顯示,以2 %的海藻酸鈉濃度和0.1%的氯化鈣濃度交鏈時具有較佳的成型效果。未添加乳化劑Arlacel 83在轉速6000rpm、10000rpm和14000rpm時,微膠囊之平均粒徑分別為7.37±0.55µm、4.53±0.35µm和1.38±0.1µm;而添加乳化劑Arlacel 83後,微膠囊之平均粒徑分別為2.84±0.22µm、0.73±0.06µm和0.28±0.02µm,且乳化效果較佳,與未添加乳化劑Arlacel 83之平均粒徑有明顯變小的趨勢;其包覆率皆有達到97 %以上。在不同轉速對釋放速度之影響中,以6000rpm的最終釋放時間較理想,且近室溫之30℃及近人體溫度之40℃時,可達到2~3小時之久。
sodium alginate, citronella oil, microcapsules, coacervation
海藻酸鈉、香茅油、微膠囊、凝膠法
Year Volume
2020 27.1 | 27.2
27.3 |
2019 26.1 |
2018 25.1 |
2017 24.1 | 24.2
24.3 | 24.4
24.5 | 24.6
24.7 | 24.8
24.9 |
2016 23.1 | 23.2
23.3 | 23.4
23.5 | 23.6
23.7 | 23.8
2015 22.1 | 22.2
22.3 | 22.4
22.5 |
2014 21.1 | 21.2
21.3 |
2013 20.1 | 20.2
20.3 | 20.4
2012 19.1 | 19.2
19.3 | 19.4
2011 18.1 | 18.2
2010 17.4