ABSTRACT: The application of rapeseed flowers has attracted more and more attention. However, little research has been done on the drying of rapeseed flowers, especially the microwave drying equipment of rapeseed flowers. The effects of power density on the drying speed and quality of rapeseed flower were studied. It was concluded that microwave drying had faster drying speed, better quality and brighter color than hot air drying. Because rapeseed petals are small, the power density of microwave drying is much higher than that of peony petals. The upper limit of power density is 31.4 W/g.
Key words: rapeseed microwave drying; power density; drying quality; color; power density upper limit
Rapeseed is one of the main oil crops in China, which is widely planted throughout the country. Every year in March and April, rapeseed flowers blossom. Beautiful scenery not only forms excellent tourism resources, but also provides a large number of raw materials for food, medical and other industries.
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