Development of Production Process of Dried Mulberry leaf for infusion Using a Combined Infrared and Hot Air Drying
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Abstract
The study of production process of the dried mulberry leaf for infusion was divided into three parts. In the first part, the effect of hot air drying temperatures at 50, 60 and 70oC on drying kinetics and physicochemical properties of the dried samples were investigated. In the second part, the effect of the infrared drying at powers of 250, 500 and 750 W combined with hot air drying on drying kinetics and physicochemical properties of the dried samples were performed. In the third part, the study focused on determination of the specific energy consumption used for drying at various drying conditions. The results of the first study showed that hot air drying at 50˚C exhibited the best physicochemical properties of the dried mulberry leaves. Therefore, in the second part, the study was conducted by infrared drying at 250, 500 and 750 W combined with hot air drying at the controlled temperature of 50oC. When considering the physicochemical properties of the dried mulberry leaves, it was found that drying at the infrared power of 750 W combined with hot air at 50˚C provided the most similar physicochemical properties to the fresh mulberry leaves. Moreover, the results in the third part showed that the combined infrared and hot air drying exhibited lower specific energy consumption than hot air drying. Overall results, it therefore could be concluded that the infrared drying at 750 W combined with hot air drying at 50oC was the most suitable condition for dried mulberry for infusion.
Article Details
บทความ ข้อมูล เนื้อหา รูปภาพ ฯลฯ ที่ได้รับการเผยแพร่ในวารสารวิทยาศาสตร์และเทคโนโลยี มรย. นี้ ถือเป็นลิขสิทธิ์ของวารสารวิทยาศาสตร์และเทคโนโลยี มรย. หากบุคคลหรือหน่วยงานใดต้องการนำทั้งหมดหรือส่วนหนึ่งส่วนใดไปเผยแพร่ต่อหรือกระทำการใดๆ จะต้องได้รับอนุญาตเป็นลายลักษณ์อักษรจากวารสารวิทยาศาสตร์และเทคโนโลยี มรย. ก่อนเท่านั้น
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