Extraction and in Vitro Adsorption Properties of Dietary Fiber from Phyllanthus emblica Linn. Pomace

An investigation was carried out to optimize the extraction process of dietary fiber from Phyllanthus emblica Linn. pomace, and the physicochemical properties and in vitro adsorption capacity of Phyllanthus emblica Linn. pomace, total dietary fiber (TDF), insoluble dietary fiber (IDF), and soluble dietary fiber (SDF) were investigated. The results showed that the optimal extraction process using alkali method was: Concentration of NaOH 8 g/L, material-to-liquid ratio of 1:35 (g:mL), treatment at 70 °C for 40 min, and the yield of IDF and SDF were 61.72%±0.04% and 17.57%±0.03%, respectively. Phyllanthus emblica Linn. pomace and its dietary fiber both had good hydration properties and oil-holding capacity. TDF had the lowest water holding and the highest swelling capacity significantly different from Phyllanthus emblica Linn. pomace, SDF and IDF (P