Corn fiber, a by-product of corn wet-milling starch manufacture
was provided by Samyang Genex Co., Seoul, Korea. Phenol and
sulphuric acid were purchased from Daejung Chemicals & Metals
Co. (Korea) for total sugar content determination. For determination
of total, soluble and insoluble dietary fiber, thermostable aamylase,
protease and amyloglucosidase (Megazyme International
Ltd., Wicklow, Ireland) were used. The other necessary chemicals
and reagents were purchased from Sigma Aldrich Co., Ltd.