AI Article Synopsis
- The study compares three green chemistry techniques for extracting dietary fibers from the cactus Opuntia ficus indica, focusing on various extraction conditions like solvents and methods.
- The results showed that while all extraction methods maintained cellulose structure, steam treatment with lemon juice was the most effective, reducing hemicelluloses and lignin content.
- Advanced imaging and analysis techniques like FTIR, XRD, SEM, and AFM confirmed the quality of extracted fibers, highlighting their uniform structure and relatively small diameter of 80 nm.
Article Abstract
This work aims to compare the development of three green chemistry methods in the extraction of cactus (Opuntia ficus indica) dietary fibers. The influence of extraction conditions (solvent nature: water, lemon juice and ethanol; extraction process: maceration and steam explosion; extraction time: 30 min, 1 h, 3 h, 5 h) on the chemical and structural composition was studied. Fourier Transform Infrared (FTIR) spectroscopy proved that all treatments do not affect the cellulose structure and could induce the reduction of hemicelluloses and lignin content. The steam treatment with lemon juice was the best treatment in term of quality of the fibers extracted. Through X-ray Diffraction (XRD) analysis, it was demonstrated that this treatment contributed to the destruction of the amorphous phase with preservation of the crystalline phase. Scanning electron microscopy (SEM) showed that the microstructure of the sample surface was uniform and contains arranged fibers. Atomic Force Microscopy (AFM) revealed fibers with 80 nm of diameter.
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| http://dx.doi.org/10.1016/j.ijbiomac.2018.05.090 | DOI Listing |
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