Paper
Characterization and Solvent Free-Synthesis of Modified Potato Starch
- Authors:
- Farzaneh Fathi; Hassan Namazi
- Abstract
- This paper reports the synthesis of higher fatty acid esters (C8, C12, C16) of potato starch in the absence of organic solvents. The synthesis process is interesting and very convenient in which water is utilized as a nontoxic and a low-priced solvent. Starch dispersed in the reaction medium was alkali treated and then alkaline starch was esterified with using octanoyl, lauroyl and palmitoyl chloride. Esterification was readily carried out under an air atmosphere for reaction duration of 5–10 min. The results indicated that the degree of substitution of the starch esters diminishes with increase in fatty acid chain length. The chemical structural characteristics were investigated by FTIR. Surface morphology of modified starch was studied using scanning electron microscopy (SEM). Also X-ray diffraction studies showed that the starch crystalline structure has changed during reaction.
- Keywords
- Modified Starch; Fatty Acid; Esterification; Without Organic Solvents
- StartPage
- 11
- EndPage
- 15
- Doi