The Influence of Different Extraction Methods on the Structure, Rheological, Thermal and Functional Properties of Soluble Dietary Fiber from Sanchi (Panax notoginseng) Flower

Abstract

The influence of different extraction methods, such as acidic (AC), enzymatic (EN), homogenization (H), ultrsonication (U) and alkali (AL), on structure, rheological, thermal and functional properties of soluble dietary fiber (SDF) from Sanchi flower was evaluated in this study. The highest extraction yield (23.14%) was obtained for AL-SDF extract. Glucose (Glc) and galactose (Gal) were found to be the major constituents in Sanchi SDF. Homogenization and Ultrsonication treatments caused significant compaction of pores in the microstructures. FTIR analysis showed increased hydrolysis of pectin and hemicellulose in U, AL and AC-SDF extracts. H-SDF and AC-SDF exhibited similar shear rate change with the rise in shear stress. H-SDF was thermally more stable than other SDF extracts. Among all extraction methods, H-SDF and U-SDF exhibited the highest water holding capacity (WHC), oil-holding capacity (OHC), Bile acid-adsorption capacity (BAC), Cholesterol-adsorption capacity (CAC) and Glucose adsorption capacity (GAC). Thus, Sanchi flower SDF with improved functional properties could be utilized as a functional food ingredient in the development of various food products.

Impact of water combined wet ball milling extraction and functional evaluation of dietary fiber from papaya (Carica papaya L)

“…In the current study, the consistency coefficient and flow behavior index of WB-DF had the highest values of 1057.82 m.Pa.s and 0.79. The differences in viscosities of DFs could be due to the structural modifications, increased particles interactions, changes in cluster structures of DF, rupture of partial branching, and consequently, rises in the apparent viscosity ( Jiang, Ramachandraiah, et al, 2022 ).…”

“…Consistently, our results demonstrated that GAC of WB-DF was significantly higher than that of AL-DF and W-DF ( p < 0.05). Increasing the porosity, cracks, surface area of DF, and exposure of (non-) polar groups can enhance the entrapment of glucose molecules within the fiber network, thereby increasing its GAC ( Jiang, Ramachandraiah, et al, 2022 ; Liu, Zhang, Yi, Quan, & Lin, 2021 ). WB-DF exhibited higher GAC than other DFs due to its higher WHC and easier access of hydrophilic glucose molecules to the fiber, facilitating their binding ( Zheng, Xu, Shi, et al, 2022 ).…”

“…The alkaline extracted DF was extracted using a 5% ( w / v ) NaOH solution, following the method proposed by Jiang, Ramachandraiah, Wu, and Ameer (2022) with certain modification. NaOH solution in specified amount of 400 mL was put into 10.0 g papaya powder, and the resultant solution was subjected to 2 h of extraction on a 40 °C water bath.…”

“…The rheological parameters of DFs solutions were measured at a constant temperature of 25 °C using an rheometer (Discovery HR-1, TA, New Castle, DE, USA) with a shear rate range of 0 to 200 s − 1 . The apparent viscosity (γ̇), flow behavior index (n) and consistency coefficient (K) of DFs samples were measured described by the Power Law model following the previous method of Jiang, Ramachandraiah, et al (2022) .…”

“…Monosaccharides determination through HPLC was carried out through modified method of Jiang, Ramachandraiah, et al (2022) . Each extracted sample was taken in an amount of 2 mg and dissolved in 1 mL of 2 M trifluoroacetic acid (TFA) under sealed conditions.…”