Optimization of carriers (maltodextrin, arabic gum) for spray-drying of Pouzolzia zeylanica extracts using response surface methodology

Abstract

Pouzolzia zeylanica is a medicinal source that the people of Asia countries have used to treat various kinds of diseases by traditional method. Many research showed that Pouzolzia zeylanica extract contains many bioactive compounds with antioxidant, antimicrobial and antifungal properties. In spray drying process, the carrier was significant effect on physico-chemical characteristics. The Response Surface Methodology (RSM) with central composite design (CCD) was applied to optimize maltodextrin (5÷15%) and arabic gum percent (0.06÷1.0%) during spray drying of Pouzolzia zeylanica extract. The physico-chemical characteristics of spray dried powder (bioactive compounds, moisture content as well as particle size distribution) were analyzed.The results showed that the optimum concentrations of maltodextrin and arabic gum were 8.743% and 0.083%, respectively. At these optimal conditions, the anthocyanin, flavonoid, polyphenol, tannin, moisture content and particle size of obtained spray dried powder were 7.411 mg CE/100g; 30.931 mg QE/g; 27.296 mg GAE/g; 24.654 mg TAE/g, 6.540% va 6.029 mm, respectively.