با همکاری انجمن علوم و صنایع غذایی ایران
نوع مقاله : مقاله پژوهشی انگلیسی
نویسندگان
1 گروه مهندسی بیوسیستم، دانشکده کشاورزی، دانشگاه فردوسی مشهد، مشهد، ایران
2 بخش تحقیقات فنی و مهندسی کشاورزی، مرکز تحقیقات و آموزش کشاورزی و منابع طبیعی خراسان رضوی، مشهد، ایران
کلیدواژه‌ها
عنوان مقاله English
نویسندگان English
This study evaluated the drying kinetics and quality characteristics of saffron stigmas using a newly developed press dryer. Drying experiments were conducted at a bed thickness of 2 or 10 mm, and the Newton–Lewis model was used to describe moisture-ratio changes in the experimental and literature-derived datasets. Across the evaluated datasets, the model achieved R² values of 0.96–0.99, although other models provided better fits under some conditions. The press dryer reached the target moisture level in 21 min for the 2-mm bed and 24 min for the 10-mm bed. Quality assessment according to ISO 3632-2 indicated that the dried saffron met Grade I requirements for crocin, safranal, and picrocrocin. Based on equipment specifications and cycle duration, nominal fan electricity use was estimated at 0.525 and 0.600 kWh, and natural gas use at approximately 0.21 and 0.24 m³ for the 2-mm and 10-mm beds, respectively. These energy values were estimates rather than direct measurements. Published drying data were used only for contextual interpretation because the studies differed in materials, equipment, and operating conditions. The findings characterize the press dryer under the conditions investigated.
کلیدواژه‌ها English
