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Updated: Aug 17, 2026
Analysis and Specification of Starch Granule Size Distributions
Published on: March 4, 2021
[Synthesis of a novel starch derivative and its adsorption property for creatinine]
1Chemistry Department, School of Science, Tianjin University, Tianjin 300072, China.
Aim:
To prepare a novel creatinine adsorbent with anti-renal failure activity.
Methods:
A novel starch ester was prepared under heterogeneous condition by the reaction of starch (ST) and 3, 5-dinitrobenzoyl chloride (DNBZ-Cl). The products were characterized by means of elemental analysis, FTIR, 13CNMR and UV-Vis spectra. The adsorption properties of DNBZ-ST were examined.
Results:
The adsorption equilibrium is reached after 4 h, the adsorption capacity increases with the degree of substitution (DS) of adsorbent and creatinine concentration. When creatinine concentration is higher than 300 mg.L-1, concentration showed no apparent effect on adsorption capacity. As the adsorption temperature varied from 19 degrees C to 49 degrees C, adsorption capacity first decreases and then increases, and is lowest at 37 degrees C. The adsorption capacity first increases and then decreases as the pH value increase from 4 to 11 and is highest at pH 8. The highest adsorption capacity reached 25 mg.g-1 at 37 degrees C pH 7 and the creatinine concentration is 100 mg.L-1.
Conclusion:
Starch 3,5-dinitrobenzoate showed a better adsorption property for creatinine, and it is worthy to be studied more deeply.
