CAJ | 학술논문

研究了壳聚糖盐酸盐对老鹳草水提液的絮凝澄清效果，利用微电泳仪、激光粒度分析仪及图像法对上清液的ζ电位、粒度分布及絮体的分形维数等微观特征参数进行测量和分析，考察其随絮凝剂用量的变化规律。实验结果表明：壳聚糖盐酸盐最佳投加剂量为0.196 g?L?1，此时杂质絮凝率为90.1%，有效成分总黄酮损失率为0.8%。在最佳絮凝剂投加量下，上清液的ζ电位趋近于零，胶体粒子处于等电态，容易发生絮凝和聚沉；上清液中颗粒的粒径分布在5~62μm，平均粒径值为10.88μm，与原液相比绝大部分大颗粒被沉降；絮凝体的二维分形维数达到最大值1.43，说明絮体结构致密。
연구료각취당염산염대로관초수제액적서응징청효과，이용미전영의、격광립도분석의급도상법대상청액적ζ전위、립도분포급서체적분형유수등미관특정삼수진행측량화분석，고찰기수서응제용량적변화규률。실험결과표명：각취당염산염최가투가제량위0.196 g?L?1，차시잡질서응솔위90.1%，유효성분총황동손실솔위0.8%。재최가서응제투가량하，상청액적ζ전위추근우령，효체입자처우등전태，용역발생서응화취침；상청액중과립적립경분포재5~62μm，평균립경치위10.88μm，여원액상비절대부분대과립피침강；서응체적이유분형유수체도최대치1.43，설명서체결구치밀。
Purification of herba geranii water-extract with Chitosan hydrochloride was studied. The microscopic parameters of the supernatant fluid including zeta potential, particle size distribution and fractal dimension of flocs were measured and analyzed by micro-electrophoresis, laser particle size analyzer and imaging approaches to investigate the effects of flocculant dosage on purification. Experimental results show that the optimum chitosan hydrochloride dosage is 0.196 g?L?1, where the flocculating rate of impurity is 90.1% and the loss rate of effective components of flavonoids is 0.8%. Zeta potential of the supernatant fluid was close to zero and the colloidal particles were under isoelectric state with the optimum dosage, which made the samples easy to flocculate and coagulate. Particles in the supernatant had diameters of 5~62μm with an average particle diameter of ~10.88μm. Most particles were precipitated comparing to the original liquids. The two-dimensional fractal dimension of the flocs has a maximum value of 1.43, which indicates that the flocs have compact structure.