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[Optimization of processing technology for pieces of sulfur-free Chinese yam]
Bo Han1, Xiao-Li Ma, Li-Jing Hao
1College of Traditional Chinese Medicine,Hebei University, Baoding 071000, China. hanboxun@163.com
Objective:
To optimize the best gradient drying technology of pieces of sulfur-free Chinese yam, and provide technique parameter for processing of pieces of sulfur-free Chinese yam.
Methods:
Determined the content of polysaccharide by UV and the content of allantoin by HPLC. The optimum gradient drying technology of pieces of sulfur-free Chinese yam was investigated by orthogonal experiment and single factor experiment and the contents of polysaccharide and allantoin were regarded as the investigated indexes.
Results:
The optimum processing technology of first gradient drying stage was A2B2, that was drying for 60 min at 115 degrees C; The optimum drying temperature of second drying stage was 65 degrees C.
Conclusion:
The optimum technology is stable and feasible for the processing of pieces of sulfur-free Chinese yam.
