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Preparation of Lemon Essential Oil Submicron Microcapsules and Its Application in Scented Paper
Received:June 16, 2022  
DOI：10.11980/j.issn.0254-508X.2023.01.004
Key Words:lemon essential oil  complex coacervation method  submicron microcapsules  scented paper
Fund Project:河南省重大公益科技专项（201300110200）；河南省科技创新团队计划（20IRTSTHN022）。
Author NameAffiliationPostcode
XU Chunping College of Food and Bioengineering， Zhengzhou University of Light Industry， Zhengzhou， He’nan Province， 450000 450000
LIANG Jiaxin College of Food and Bioengineering， Zhengzhou University of Light Industry， Zhengzhou， He’nan Province， 450000 450000
LI Shijie China Tobacco He’nan Industrial Co.， Ltd.， Zhengzhou， He’nan Province， 450016 450016
YANG Wenjing College of Food and Bioengineering， Zhengzhou University of Light Industry， Zhengzhou， He’nan Province， 450000 450000
LI Tianxiao College of Food and Bioengineering， Zhengzhou University of Light Industry， Zhengzhou， He’nan Province， 450000 450000
JIA Xuewei College of Food and Bioengineering， Zhengzhou University of Light Industry， Zhengzhou， He’nan Province， 450000 450000
LI Lipeng College of Food and Bioengineering， Zhengzhou University of Light Industry， Zhengzhou， He’nan Province， 450000 450000
HAO Hui* China Tobacco He’nan Industrial Co.， Ltd.， Zhengzhou， He’nan Province， 450016 450016
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Abstract:Lemon essential oil submicron microcapsules were prepared by complex coacervation method with chitosan as wall material and lemon essential oil as core material. The optimum condition was that wall material content of 0.27%， mass ratio of core and wall materials of 3.5∶1， the emulsifying dosage of 0.37%， and the emulsifying rate of 750 r/min. Under this condition， the submicron microcapsules had a compact structure with the smallest particle size of about 274 nm， and the embedding rate of 50.83%， of which the surface wall was relatively smooth， showing approximately spherical or ellipsoid. The essential oil of submicron microcapsules began to lose at about 200 ℃ and there was still a small amount of essential oil at 600 ℃， indicating that the wall material could effectively control the release of essential oil. When the addition amount of submicron microcapsules was 3%， the prepared scented paper could remain fragrant for 2 h at 90 ℃， demonstrating a good slow-release effect.
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