@article {1022, title = {Effects of Beta Glucosidase Inhibitor on Cellulase Enzyme Activity for Preparation of Microcrystalline Cellulose from Water Hyacinth (Eichhornia crassipes)}, journal = {Pharmacognosy Journal}, volume = {11}, year = {2019}, month = {October 2019}, pages = {1225-1230}, type = {Original Article}, chapter = {1225}, abstract = {

Objective: Microcrystalline cellulose (MCC) was a highly desirable excipient which being used for making tablets with direct compression method in Pharmaceutical manufacture. The purpose of this study was to compare microcrystalline cellulose preparation from water hyacinth powder with and without addition of β-glucosidase inhibitor followed by identification and characterization of the resulting powders. Methods: The study was began with isolation of potential organisms from soils in mangrove followed by extraction of {\textbullet} -glucosidase inhibitor. MCC was prepared through enzymatic hydrolysis of alpha-cellulase with and without addition of beta-glucosidase inhibitor. Identification was done using FTIR, then characterized by organoleptic examination, qualitative analysis, starch test, pH test, Scanning Electron Microscopy (SEM) analysis of particle size and distribution, X-ray Diffraction (XRD), moisture content, loss on drying test, particle density test, flow rate test and angle of repose test compared to microcrystalline cellulose which had been available on the market. Results: The hydrolysis conditions were carried out at 30{\textdegree}C, for 2 h and the powder was dissolved in acetate buffer pH 7 by addition of enzyme and 2.5 ml inhibitor. MCC yield with addition of beta-glucosidase inhibitor (80\%) was higher than without addition of beta-glucosidase (68\%). Conclusion: Addition of beta glucosidase inhibitor showed positive impact to increase MCC yield from alpha cellulose sample.

}, keywords = {Charaterization, Enzyme hydrolyisis, Microcrystalline cellulose, Water hyacinth, β-glucosidase inhibitor}, doi = {10.5530/pj.2019.11.190}, author = {Annisa Shabrina and Herman Suryadi and Sutriyo} } @article {716, title = {Isolation of Cellulolytic Fungi and Utilization of Its Cellulolytic Activity for Microcrystalline Cellulose Preparation from Water Hyacinth (Eichhornia crassipes)}, journal = {Pharmacognosy Journal}, volume = {10}, year = {2018}, month = {August 2018}, pages = {1082-1088}, type = {Original Article}, chapter = {1082}, abstract = {

Introduction: Microcrystalline cellulose is a cellulase derivative which usually used as a pharmaceutical excipient in the manufacturing of direct compression tablet. High concentration of cellulose is found in water hyacinth (about 60\%) therefore it might be used in the manufacturing of microcrystalline cellulose. This study was aimed to obtain the best cellulolytic fungi, the best optimal conditions of enzymatic hydrolysis and comparing microcrystalline cellulose characteristics obtained from water hyacinth with microcrystalline cellulose standard, Avicel pH 101. Method: This study began with isolation of cellulolytic fungi, and then enzymatic hydrolysis of \α-cellulose was done with cellulase enzymes extracted from cellulolytic fungi with various pH, temperature, duration and enzyme concentration. Microcrystalline obtained was characterized by XRD (X-Ray Diffraction) and then the result was compared with Avicel pH 101. Results: The results showed the best cellulolytic isolate was isolate 2 and its optimal hydrolysis conditions at pH 5, 30$^{0}$C, for 1 h with 5 mL (5\% v/v) enzyme. Based on the pattern of diffraction there was a similarity between microcrystalline cellulose of enzymatic hydrolysis result compared with Avicel pH 101.

}, keywords = {Cellulase, Cellulolytic fungi, Cellulose, Enzymatic hydrolysis, Microcrystalline cellulose, Water hyacinth}, doi = {xx10.5530/pj.2018.6.183}, author = {Mitayani Wahyu Murti and Monica Angeline Sudarsono and Herman Suryadi} }