Effect of Wheat Bran Fibers of Different Grain Sizes on Characteristics of Rice Starch
The effects of wheat bran fibers of different particle sizes on the digestive properties,rheological properties,pasting properties and other indexes of rice starch were investigated.The results showed that wheat bran fiber inhibited the digestion of rice starch,with the highest inhibition rate of wheat bran fiber at 140 mesh(rapidly digestible starch content decreased to(79.03±1.10)％and slowly digestible starch content increased to(19.04±1.55)％).Wheat bran fiber increased the solubility,swelling and water precipitation of rice starch gel.The solubility((29.73±0.42)％)and swelling((19.35±0.16)％)of rice starch gel were the highest when the particle size of wheat bran fiber was 120 mesh.Water precipitation rate of rice starch gel((46.35±0.59)％)was maximum at wheat bran fiber particle size of 140 mesh.Wheat bran fibers reduced rice starch gel strength,hardness,chewability,adhesion,and light transmittance,and rice starch gel strength((0.31i0.02)N),hardness((1.45±0.09)N),chewability(8.77±0.05),and adhesion(1.57±0.05)were minimized at a particle size of 120 mesh.The transmittance((5.80±0.20)％)of rice starch gel was minimum at 140 mesh particle size.In addition,wheat bran fiber could also increase the energy storage modulus,loss modulus,and water-holding capacity of rice starch gel,reduce the sedimentation rate of rice starch gel,and affect the pasting characteristics of rice starch.The results can provide theoretical basis for rice starch processing production and development of product.
万方数据
维普
