ẢNH HƯỞNG CỦA NỒNG ĐỘ MALTODEXTRIN VÀ ĐIỀU KIỆN SẤY PHUN ĐẾN CÁC ĐẶC TÍNH VẬT LÝ VÀ HOẠT CHẤT SINH HỌC CỦA SẢN PHẨM BỘT CÂY THUỒC DÒI

Abstract

The study was carried out to investigate effect of maltodextrin concentration (3, 6, 9, 12, 15 and 18%, w/v) added in Pouzolzia zeylanica extract before undergoing spray drying process, as well as operation conditions including inlet air drying temperature (160, 170,180, 190 and 200⁰C) and feed flow rate (14, 16, 18, 20 and 22 rpm) on physical properties and bioactive compounds of obtained powder. The experiments were designed to become individual consecutive studies, in which the results of previous study were used to set up the next study. The bioactive compounds content (anthocyanin, flavonoid, polyphenol and tannin), physical properties of product (moisture content, water activity and mean particle size) will be analyzed and evaluated in experiments. Study results showed optimal spray drying conditions for Pouzolzia zeylanica extract were temperature of 180⁰C; feed flow rate of 18 rpm and maltodextrin concentration added 9% (w/v). The obtained powder product had bioactive compounds content in high level and physical properties achieved requirements for handling and preservation.tool and easy to assess with highly effective.