ผลของอุณหภูมิและตัวกลางการอบแห้งต่อจลนพลศาสตร์การอบแห้งและสมบัติของเปลือกแก้วมังกร
ละมุล วิเศษ และ ณัฐพล ภูมิสะอาด
วารสารวิทยาศาสตร์เกษตร 43 (3พิเศษ):260-263. 2555.
2555
บทคัดย่อ
Dragon fruit peel is a waste after consuming the flesh. However, the peel found to contain bioactive compounds which hassome medical values. The objective of the research was to study the effects of drying temperatures and media on the drying kinetic of dragon fruit peel and total phenolic compounds content, antioxidant activity and soluble pigment. Heat pump dryer with drying media was used for drying the peel at drying media temperatures of 45, 50 and 55°C. Results of the study found that at a specific drying temperature, the use of air as drying medium had the higher drying rate than the use of nitrogen as drying medium. The peel sample with initial moisture content of 1011 % dry basis was dried down to 11% dry basis where it took 400 and 3