Optimization of cationic amino starch synthesis using biogenic amines

• Published in: Carbohydrate polymers Vol. 98; no. 2; pp. 1409 - 1415
• Main Authors: Anthony, Renil John, Sims, Ronald C.
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 06.11.2013; Elsevier
• Subjects: Amino starch; Applied sciences; biobased products; Biogenic amines; cadaverine; Cadaverine - chemistry; Cationic starch; Cations; Cell Separation - methods; colloids; Electrochemical Techniques; Exact sciences and technology; Flocculation; Harvesting; histamine; Histamine - chemistry; Microalgae; Microalgae - isolation & purification; Natural polymers; nitrogen; Physicochemistry of polymers; potato starch; putrescine; Putrescine - chemistry; Solanum tuberosum - chemistry; starch; Starch - chemistry; Starch and polysaccharides; stoichiometry; Temperature; Time Factors; tyramine; Tyramine - chemistry; Waste Water - microbiology; Wastewater; zeta potential; Amino starch; Microalgae; Wastewater; Biogenic amines; Harvesting; Cationic starch; Stoichiometry; Epichlorhydrin; Experimental study; Property processing relationship; Coagulant; Chemical modification; Amination; Amine polymer; Preparation; Potato starch; Biogenic amine; Reaction time; Oside polymer; Electrokinetic potential; Starch derivative
• ISSN: 0144-8617; 1879-1344
• DOI: 10.1016/j.carbpol.2013.07.043

•Identified and studied biogenic amines as a functional group for cationic starch.•Synthesized cationic amino starch with putrescine, histamine, cadaverine and tyramine.•Optimized reaction conditions for synthesizing high zeta potential cationic starch.•Histamine cationic amino starch has high cationicity with lower reaction temperatures.•Cationicity of cationic starch with other amines depended on amine concentrations. Harvesting microalgae presents a challenge in selecting the most economical method for low cost algal bioproducts. Previous studies have shown coagulation–flocculation to be the most efficient method for large scale microalgae harvesting. This study focused on modifying native potato starch with biogenic amines and optimizing the reaction parameters. Such modification rendered the starch cationic, with an ability to destabilize microalgae suspensions or colloids. The effect of time, temperature, and reactant concentrations on the zeta potential of the cationic amino starch was studied. Biogenic amines including putrescine, histamine, cadaverine, and tyramine were selected for study based on the number of nitrogen groups in their structure. Zeta potential for histamine cationic amino starch was significantly higher (+9.0±2.0mV) at lower reaction temperatures, regardless of the amine to starch ratio and reaction time intervals. Putrescine, cadaverine, and tyramine cationic amino starches exhibited significantly higher zeta potential values (13.76±3.60, 6.81±1.64, and 5.68±1.60mV, respectively) with amine to starch ratio higher than reaction stoichiometry, irrespective of reaction temperature or time intervals. This optimization study has presented a basis for designing reaction conditions for the synthesis of cationic amino starch from an inhomogeneous mix of biogenic amines derived from waste sources.