Journal of Tianjin Agricultural University ›› 2019, Vol. 26 ›› Issue (4): 77-82.doi: 10.19640/j.cnki.jtau.2019.04.016

• Researches and Scientific Notes • Previous Articles     Next Articles

Formulation optimization of calycosin phospholipid complex

SHI Zhuo-qi a, LIU Li-yao a, b, Corresponding Author, XIONG Qiana, WANG Qing-kuib   

  1. Tianjin Agricultural University, a. Department of Biopharmaceuticals, College of Basic Science; b. Tianjin Key Lab of Aquatic Ecology and Aquaculture, Tianjin 300384, China
  • Received:2019-01-13 Published:2020-01-19

Abstract: :Calycosin is an active substance extracted and separated from Astragalus membranaceus. It could combine with estrogen receptor and generate estrogen-like action, antitumor and immunoregulation effect. However, because of its poor lipophilicity, it is difficult to be utilized in medical preparation. And its in vivo bioavailability is usually extremely low. This study was designed to increase the lipophilicity of calycosin using phospholipid complexation technology. In this study, associative efficiency(AE)was set as screening parameter and optimal formulation of calycosin phospholipid complex was obtained using solvent evaporation method based on single factor screening and orthogonal design. Under the selected formulation, mass ratio of calycosin to phospholipid was 1∶5 and composite time was 60 minutes in ethanol of pH 6.0. For the selected formulation, AE of calycosin phospholipid complex could reach 90% and storage stability remained in 3 months under 4 ℃. Compared with calycosin material medicine, the lipophilicity of phospholipid complex was increased by 600 times, which provides the basis for practical application.

Key words: calycosin, phospholipid complex, orthogonal screening, formulation optimization

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