Sri Sulihtyowati Soebagyo
Fakultas Farmasi UGM

Published : 4 Documents
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Optimization of celery (Apium graveolens L.) herb extract granule production using Fluidized Bed Granulator Djatmiko, Mohammad; Soebagyo, Sri Sulihtyowati; Pramono, Suwijiyo; Martono, Sudibyo
INDONESIAN JOURNAL OF PHARMACY Vol 20 No 2, 2009
Publisher : Faculty of Pharmacy Universitas Gadjah Mada, Yogyakarta, Skip Utara, 55281, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (497.149 KB) | DOI: 10.14499/indonesianjpharm0iss0pp91-98

Abstract

Celery is an Indonesian herb being used as vegetable and medicinal purposes especially in hypotensive remedy. In order to produce a good quality of celery herb extract granules, a study on the influence of spray rate, level of lactose and Aerosil in fluidized bed granulator (FBG) toward homogeneity, flow rate and water content of granules was done.In the optimization process was programmed by factorial design, the maximum spray rate was 4 L/hours and the minimum was 2 L/hours, the maximum amount lactose was 100% and the minimum was 80% of extract weight, and Aerosil content maximal 20% and minimal 0% of extract weight. The optimum area of optimization result was found from superimposed contour plot granule parameters including homogeneity of apiin content, flow rate and moisture content of granules.The result showed that the Aerosil was proven to be disadvantageous in FBG process. The optimum area of optimization to obtain good granules was achieved by 2.75 L/hour to 2.00 1/hour of spray rate with the amount of lactose at 93.5% to 100% of extract weight with viscosity at 2.8 cP and density at 1.07 g/mL and without Aerosil. The granules possesed homogeneity of apiin with CV 3-5%, 0.85-1.00% of water content and 12.0-13.0 g/sec of flow rate.Key words: Celery (Apium graveolens L.), apiin, factorial design, extract, granules.
The influence of lactose and povidon on the formulation of tablet containing Kaempferia galanga L . extract by a wet granulation method Kuswahyuning, Rina; Soebagyo, Sri Sulihtyowati
INDONESIAN JOURNAL OF PHARMACY Vol 16 No 2, 2005
Publisher : Faculty of Pharmacy Universitas Gadjah Mada, Yogyakarta, Skip Utara, 55281, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (171.861 KB) | DOI: 10.14499/indonesianjpharm0iss0pp110-115

Abstract

Increasing use of Kaempferia galanga L. (Kencur) as a traditional medicine needs the development of more practical dosage form e.g. tablets. This study was conducted to observe the infuence of lactose as a filler and Povidon as a binding agent to the physical properties of the granules and to determine the optimum tablet formula for Kaempferia galanga L. extract by a wet granulation method. The use of factorial design with 2 factors (lactose and Povidon) and 2 levels (lactose : low level = 300% and high level = 450% of the extract weight, respectively; Povidon : low level = 0.3% and high level = 3% of the extract weight, respectively), it needed four formulas to produce granules of the Kaempferia galanga L. extract. Each of the granules of Kaempferia galanga L. extract was produced by a wet granulation method and was dried at 40-60°C for 24 hours. Dry granules were tested on their properties of flowability, compactibillity and water uptake.  Lactose significantly influenced the compactibillity and the water uptake, whereas Povidon significantly influenced the compactibillity, flowability and water uptake. Based on the contour plots of the physical properties of the granules and total responses, formula using 315% lactose and 2.98% Povidon of the extract weight, respectively, was chosen as the optimum tablet formula. Produced tablets had dark brown colour and weight uniformity with average weight of 373.60 ± 0.63 mg, hardness of 2.18 ± 0.192 kg, friability of 0.10 ± 0.011%, and disintegration time of 4.43 ± 0.147 minutes.Key words : Kaempferia galanga L. extract, tablet formula, lactose, Povidon
THE EFFECT OF REPEATED COMPACTION ON STARCH 1500 AS A FILLER-BINDER OF DIRECT COMPRESSION TABLET Soebagyo, Sri Sulihtyowati; ., Muliyadi
INDONESIAN JOURNAL OF PHARMACY Vol 12 No 4, 2001
Publisher : Faculty of Pharmacy Universitas Gadjah Mada, Yogyakarta, Skip Utara, 55281, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (100.44 KB) | DOI: 10.14499/indonesianjpharm0iss0pp166-171

Abstract

Poor flowability is the weakness of Starch 1500 as a filler-binder of direct compression tablet. Granulation by compaction is one of the ways to improve the flow ability as it produced larger granules. Compaction of Starch 1500 (once) produced granules having flowability, compressibility and compactibility better than the original Starch 1500 powder. These granules, eventually, yielded tablets having higher hardness, less friable and longer disintegration time than that of the original Starch 1500. On twice compaction of Starch 1500, however, produced more fluid granules than previous method but the compressibility and compactibility tended to decrease. These type of granules yielded tablets having lower hardness and friability but higher disintegration time, significantly. Key words: Starch 1500, granule, flowability, compressibility, tablet properties
Optimization of theophylline sustained release tablet formula with HPMC, CMC Na and xanthan gum as matrix component Siswanto, Agus; Soebagyo, Sri Sulihtyowati
INDONESIAN JOURNAL OF PHARMACY Vol 17 No 3, 2006
Publisher : Faculty of Pharmacy Universitas Gadjah Mada, Yogyakarta, Skip Utara, 55281, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (223.129 KB) | DOI: 10.14499/indonesianjpharm0iss0pp143-148

Abstract

Theophylline has a relatively short half-life (8,1 jam) with a narrow therapeutic window (10 – 20 μg/mL). Sustained-release formulation can produce more uniform serum concentrations with less fluctuation in peaktrough levels. The physical properties of tablet mass and the release profileof drug from hydrophilic matrices are influenced by properties of matrix components, i.e. HPMC (gelling agent), CMC-Na (did not show initial burst release), and xanthan gum (free flowing).The research was done with simplex lattice design (SLD) by using 3 component, i.e. HPMC (A), CMC-Na (B), and xanthan gum (C). Seven formula were obtained that are F1 (100% A), F2 (100% B), F3 (100% C), F4 (50% A & 50% B), F5 (50% B & 50% C), F6 (50% A & 50% C), dan F7 (33,33% A, 33,33% B, 33,33% C). The Optimization parameters of theophylline sustained-release were flow rate of the tablet mass, the compactibility of the tablet mass, and the release rate of theophylline.Based on SLD model; equations, contour plots, and superimposed of contour plots were obtained, by which the optimum formula was determined.Xanthan gum was the most dominant factor in increasing flowability and compactibility of theophylline tablet mass. HPMC was the most dominant factor in decreasing the dissolution rate of theophylline. The most dominant interaction effect to increase flowability and compactibility was the interaction of HPMC, CMC-Na, and xanthan gum. The most dominant interaction effect to increase correlation coefficient of zero order kinetics was the interaction HPMC and CMC-Na. Based on the superimposed contour plots, tablet formula consisting of HPMC (2,3 %), CMC-Na (18,6 %), and xanthan gum (79,1 %) is the optimum tablet formula.Key words: theophylline, HPMC, CMC-Na, xanthan gum, sustained-release