Abstract:

Contents of total, soluble and insoluble dietary fibers in oat and buckwheat from different resources were determined by enzymatic-gravimetric method. Average total dietary fiber (TDF) was 12% in oat. However, TDF in oat from Heilongjiang, Shanxi and Hebei was higher than 12%, and TDF in oat from Qinghai, Ningxia were lower than 12%. The content of soluble dietary fiber (SDF) in Miyanmai from Heilongjiang were the highest, and the content of insoluble dietary fiber (IDF) in Xiaoyoumai from Hebei and in 73014-336 oat from Shanxi was higher. TDF, SDF and IDF in imported Bup-1809 were lower han average value. TDF in buckwheat was 7%. TDF in Eluomuerre from Sichuan province were the highest, which was 9.64%; SDF in 90-3 buckwheat from Guzhou were the highest, which was 3.45%; IDF in Eluomuerre from Sichuan and Manqiaozi from Shanxi was higher. Repeatability of this method for analyzing contents and compositions of dietary fibers in different kinds of oat and buckwheat was excellent.

Key words: oat, buckwheat, dietary fiber, enzymatic-gravimetric method