4.7 Article

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

Journal

FOODS
Volume 11, Issue 14, Pages -

Publisher

MDPI
DOI: 10.3390/foods11141995

Keywords

Sanchi flower; soluble dietary fiber; extraction methods; functional properties

Funding

  1. Foundation of Ph.D. Research Project, Jilin Medical University, Jilin Province, China [JYBS2019010]

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This study evaluated the influence of different extraction methods on the properties of soluble dietary fiber from Sanchi flower. The results showed that alkaline extraction method had the highest extraction yield, while homogenization and ultrasonication treatments caused pore compaction in the microstructures. Additionally, homogenization and ultrasonication extracts exhibited higher functional properties, making them suitable for the development of food products.
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.

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