Moisture (oven air-drying method), lipid (Soxhlet extraction), and ash (muffle furnace) content of soy hulls were analyzed by the AOAC method (AOAC, 2000). Protein content was analyzed by the high temperature combustion process, and acid detergent fiber (ADF) was analyzed by the filter bag technique (Komarek, 1993). Mineral content was analyzed by inductively coupled plasma (ICP) emission spectroscopy after a nitric acid digestion (Havlin & Soltanpour, 1980). Pectin content of SHP was determined by the Carbazole colorimetry method (Zhang et al., 2010) and expressed as g L-galacturonic acid/g dried sample (n ¼ 3/treatment/replicate).