5351
Sawsan Dacrory Mohamed Ali
Antimicrobial Hydrogel from Residues of
Olive Oil Industry
Antimicrobial Hydrogel, Cellulose, CMC, DCMC, ECH, Olive Residue,
poly carboxylic acid
Olive stone is an important solid waste produced from olive oil extraction process, and it is considered a renewable resource biomass. It consists principally of cellulose, lignin, and hemicelluloses. In the first part cellulose was extracted from raw material (olive stone) by pulping process with NaOH followed by bleaching treatment with sodium chlorite (NaClO2). Bleached pulp sample was characterized by determination of (ash, lignin, pentoses, and α-cellulose). Bleached sample converted to carboxymethylcellulose (CMC). Both of cellulose and CMC were characterized by using FTIR, SEM, and XRD.In the second part Cellulose and CMC prepared from seed and husk were reacted with Acryl amide (Am) by grafting process in presence of N, N Methylene bis-acrylamide (MBAm) as cross linker and ceric ammonium nitrate (CAN) as initiator with studying reaction conditions such as temperature, time, cross linker, and monomer concentration. The result showed that, husk hydrogel was more efficiency than seed hydrogel. The hydrogel recorded high true yield, grafting efficiency, and swelling in case husk gel. Silver nano particles (AgNPs) were loaded to the prepared hydrogel. The biological activities of hydrogels with loaded AgNPs were investigated against Gram-positive, Gram-negative and Candida.
2017
Ph.d
Ain Shams
Science