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Preparation of Fragrant Microcapsule for Reducing Stress

긴장완화를 위한 향기나는 마이크로캡슐의 제조

  • Kim, Yoon A (Chungbuk National University Attached High School) ;
  • Kim, So Hyun (Chungbuk National University Attached High School) ;
  • Park, Ji Su (Chungbuk National University Attached High School) ;
  • Lee, Da Som (Chungbuk National University Attached High School) ;
  • Kim, Jin Gon (Department of Chemistry, Chungbuk National University) ;
  • Shin, Jae Sup (Department of Chemistry, Chungbuk National University)
  • 김윤아 (충북대학교사범대학부설고등학교) ;
  • 김소현 (충북대학교사범대학부설고등학교) ;
  • 박지수 (충북대학교사범대학부설고등학교) ;
  • 이다솜 (충북대학교사범대학부설고등학교) ;
  • 김진곤 (충북대학교 화학과) ;
  • 신재섭 (충북대학교 화학과)
  • Received : 2011.12.01
  • Accepted : 2012.01.20
  • Published : 2012.01.31

Abstract

A fragrant microcapsule was prepared for use by students to reduce the stress of taking examinations. Rosmarinic acid was used as a fragrant oil which had the effect of relaxing stress, polycaprolactone (PCL) was used as a capsule wall material, and poly(vinyl alcohol) (PVA) as a stabilizer. The solvent evaporation method was used to form the microcapsule. The microcapsules were prepared by changing the stirring rate, the concentration of the stabilizer, and the molecular weight of PCL. The shape of the microcapsule was characterized by scanning electron microscopy (SEM). The size of the microcapsule was reduced by increasing the stirring speed. The release rate of rosmarinic acid was decreased when the higher molecular weight PCL was used. When the prepared microcapsule was tested in an aromatherapy class, the microencapsulated fragrant oil had a longer release time than the original fragrant oil. The study data showed that this fragrant oil was effective for increasing concentration ability, reducing stress, increasing digestive power, and increasing memory for the students.

스트레스 완화를 목적으로 향기나는 마이크로캡슐을 제조하여 수험생들을 대상으로 평가하였다. 향 오일로는 긴장완화에 효과가 있다고 알려진 rosmarinic acid를 사용하였으며 벽재 물질로는 polycaprolactone (PCL)을 사용하였고 안정제로는 poly(vinyl alcohol) (PVA)을 사용하였다. 마이크로캡슐은 액중건조법을 이용하여 제조하였다. 교반속도와 안정제의 농도, 그리고 PCL의 분자량을 변화시키면서 마이크로캡슐을 제조하였으며 형성된 마이크로캡슐의 형태와 입자의 크기를 주사전자현미경을 이용하여 관찰하였다. 마이크로캡슐을 형성시킬 때, 교반속도가 빠를수록 작은 입자가 형성되었으며, 형성된 마이크로캡슐 안에 있는 향 오일의 방출속도는 사용된 PCL의 분자량이 클수록 지연되는 것을 확인할 수 있었다. 제조한 마이크로캡슐을 이용하여 실제 교실에서 학생들에게 aromatherapy를 시도해본 결과 마이크로캡슐화된 향 오일이 캡슐화하지 않은 향 오일보다 향이 지속되는 시간이 훨씬 길었으며 향 오일이 스트레스 완화, 소화작용 촉진, 피로도 감소, 집중력 향상에 효과가 있어 수험생에게 도움이 된다는 설문조사 결과를 얻었다.

Keywords

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