@article {997, title = {Effect of Beta Glucosidase Inhibitor from Lichen Extract in Microcrystalline Cellulose Preparation from Water Hyacinth (Eichhornia crassipes)}, journal = {Pharmacognosy Journal}, volume = {11}, year = {2019}, month = {October 2019}, pages = {1199-1203}, type = {Original Article}, chapter = {1199}, abstract = {

Objective: Microcrystalline cellulose (MCC) is an excipient commonly used in the manufacturing of pharmaceutical preparations, especially tablet. MCC has been successfully made from water hyacinth (Eichhornia crassipes) through enzymatic hydrolysis process. This study aimed to find the effect of β-glucosidase inhibitor from lichen extract to the yield of MCC, the optimum conditions of enzymatic hydrolysis including pH and reaction time and characteristics of MCC obtained compared to reference, Avicel PH-101. Method: The study was began with extraction of cellulose enzyme and followed by determination of optimum beta-glucosidase inhibitor concentration. Then, this conditions were used for enzymatic hydrolysis of α-cellulose to MCC, followed by identification and characterization of MCC obtained and compared with Avicel PH- 101. Results: The optimum concentration of inhibitor was 120 ppm. A little higher yield of MCC was obtained when inhibitor extract is used in hydrolysis alfa-cellulose to MCC. The identity of MCC obtained was similar to infrared spectrum of reference. Other characteristics of MCC obtained were powder in the form of a slightly coarse, odorless and tasteless and slightly yellowish than reference. Conclusion: Addition of extract of Beta glucosidase inhibitor did not improve the MCC yield significantly, but identity and characteristics of MCC obtained showed similarities to the microcrystalline cellulose reference (Avicel PH = 101).

}, keywords = {Enzymatic hydrolysis, Lichen extract, Microcrystalline cellulose, Water hyacinthm, β-glucosidase inhibitor}, doi = {10.5530/pj.2019.11.186}, author = {Citra Bonnita Putri and Sutriyo and Herman Suryadi} } @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} }