Comparative study and characterization of starches isolated from unconventional tuber sources
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Germán Ayala Valencia
und
Rubén Antonio Vargas Zapata
Abstract
Some properties of canna (Canna indica L.) and bore (Alocasia macrorrhiza) starches were evaluated and compared using cassava starch (Manihot esculenta Crantz) as a reference. Proximate analysis, differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) and viscosity measurements were performed. Canna and bore starches showed a similar degree of purity as that of the cassava starch. Canna starch exhibited higher thermal stability and viscosity of solution values than those of bore and cassava starches. XRD spectra showed that canna starch crystallizes as a B-type structure; however, bore and cassava starches crystallize as an A-type structure. Results proved that canna and bore starches are promising bio(materials), obtained from unconventional sources, to be used for industrial applications, as their physicochemical properties are similar to those of cassava starch, which it is known has potential applications in this area.
©2012 by Walter de Gruyter Berlin Boston
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Artikel in diesem Heft
- Masthead
- Masthead
- Original Articles
- Sensitivity analysis of free-volume theory parameters in multicomponent polymer-solvent-solvent systems
- Effect of intercalant types on the properties of melt blended metallocene polyethylene/metallocene polyethylene-g-silane/clay nanocomposites
- Compatibilization and toughening of immiscible ternary blends of polyamide 1010, polypropylene, and ABS resin
- Clay modification with silane compounds and characterization of the silicone rubber/clay composites
- Effects of surface treatments of AA 2024-T3 aluminum sheet on bonding to epoxy-based film adhesive
- Thermooxidative degradation and its kinetics of natural rubber coagulated by microwave radiation
- Modeling of tensile modulus of polyolefin-layered silicate nanocomposites: modified micro-mechanical and statistical methods
- Comparative study and characterization of starches isolated from unconventional tuber sources
- Unsaturated polyester/E-glass fiber composites made by vacuum assisted compression resin transfer molding
- Influence of stacking sequence on mechanical properties of basalt-jute fiber-reinforced polymer hybrid composites
- Effect of processing variables on mechanical properties of montmorillonite clay/unsaturated polyester nanocomposite using Taguchi based grey relational analysis
- Study on DTBP initiated MAH onto polybutene-1 with melt-grafting
- Investigation of rapid manufacturing technology with ABS material for wind tunnel models fabrication
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