Korean Chemical Engineering Research

The Korean Institute of Chemical Engineers (한국화학공학회)
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Influence of Zeta Potential on Fractional Precipitation of (+)-Dihydromyricetin

(+)-Dihydromyricetin 분별침전에 미치는 제타전위의 영향

  • Ha, Geon-Soo (Department of Chemical Engineering, Kongju National University) ;
  • Kim, Jin-Hyun (Department of Chemical Engineering, Kongju National University)
  • 하건수 (공주대학교 화학공학부) ;
  • 김진현 (공주대학교 화학공학부)
  • Received : 2015.02.02
  • Accepted : 2015.03.27
  • Published : 2015.12.01
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Abstract

This study evaluated the influence of the zeta potential of silica-alumina on the behavior in terms of purity, yield, and precipitate shape and size of fractional precipitation in the fractional precipitation process for the purification of (+)-dihydromyricetin. The optimal silica-alumina amount (surface area per working volume of reacting solution) for zeta potential control was $100mm^{-1}$. As the zeta potential value of silica-alumina increased, (+)-dihydromyricetin yield and precipitate size were increased. The use of silica with the highest value of the zeta potential (+4.99 mV) as a zeta potential-controlling material increased the (+)-dihydromyricetin yield by 2-fold compared with that of the use of alumina with the lowest value of the zeta potential (-19.00 mV). In addition, the (+)-dihydromyricetin yield and precipitate size was inversely correlated with the absolute value of the zeta potential. On the other hand, the purity of (+)-dihydromyricetin had almost no effect on changes in the zeta potential of silica-alumina.

본 연구에서는 바이오매스 유래 생리활성물질인 (+)-dihydromyricetin을 정제하기 위한 분별침전공정에서 분별침전용액의 제타전위가 분별침전 양상(순도, 수율, 침전물 형태와 크기)에 미치는 영향을 조사하였다. 제타전위 조절을 위한 실리카-알루미나의 첨가량(반응액 부피당 표면적) $100mm^{-1}$에서 가장 높은 수율을 얻을 수 있었다. 실리카-알루미나의 제타전위가 양(+)의 값으로 증가할수록 (+)-dihydromyricetin 수율과 침전물의 크기는 증가하였다. 가장 큰 제타전위 값(+4.99 mV)을 가진 실리카를 이용한 분별침전의 경우에는 가장 작은 제타전위 값(-19.00 mV)을 가진 알루미나를 이용한 분별침전의 경우보다 2배 이상 높은 수율을 얻을 수 있었다. 또한 분별침전 과정에서 제타전위 절대값이 증가할수록 (+)-dihydromyricetin 수율과 침전물의 크기는 감소하여 제타전위 절대값에 반비례함을 알 수 있었다. 반면 표면적증가물질 실리카-알루미나의 제타전위 변화에도 (+)-dihydromyricetin 순도는 거의 변화가 없었다.

Keywords

References

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  1. 분별침전에서 친수성 고분자 물질을 이용한 (+)-dihydromyricetin의 입자크기 감소 vol.56, pp.3, 2015, https://doi.org/10.9713/kcer.2018.56.3.370