Characterization of Nutrient Uptake Property of Ramie Leaf and Development of Powder Production Process

Ramie (Boehmeria nivea L.) is a well known fiber crop in asian countries, and it also is used as raw material for food. Recently, demand of ramie leaf powder was increased because of its high contents of nutrient. In this study, we investigated the growth and mineral nutrient accumulation of ramie through hydroponics and suggested the new process of fine powder production by low-temperature drying method with jet-mill for high preservation nutrients. In results of hydroponics, concentration series of hoagland nutrient solution affected growth and development and it was decreased at 1/4, 2/4, and 3/4 concentrations. High preservation of the chlorophyll and inorganic nutrients were showed at boiling times within 1 to 3 min only. Moreover, chlorophyll contents in the fine powder produced at 16°C drying condition maintained up to 30% than normal drying condtion (25°C). These results suggest that new processing method for raw ramie leaves can enhance quality and nutrient contents in fine powder. Additional key words: Ramie powder, Processed food, Hydroponics, Chlorophyll contents, Biofortification