Dewi Isadiartuti
Dept of Pharmaceutics, Faculty of Pharmacy, Airlangga University, Darmawangsa Dalam Surabaya-Indonesia

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Karakterisasi Kompleks Inklusi Asam Mefenamat - β -Siklodekstrin yang Dibuat dengan Metode Freeze Drying Setyawan, Dwi; Isadiartuti, Dewi
Jurnal Kefarmasian Indonesia Vol 1, No 1 (2009)
Publisher : Jurnal Kefarmasian Indonesia

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Abstract

Characterization of mefenamic acid-β-cyclodextrin inclusion complexes by freeze drying method had been studied. Solid state mefenamic acid- β-cyclodextrin inclusion complex prepared by freeze drying method in 1:1 molar ratio. Mefenamic acid, β-cyclodextrin, mefenamic acid-β-cyclodextrin physical mixture and inclusion complexes were charac­terized by Powder X-ray Diffraction (PXRD), Fourier Transform Infrared Spectroscopy (FTIR) , Differential Thermal Analyzer (DTA) and dissolution studies. The results showed the formation of inclusion complex between mefenamic acid and β-cyclodextrin. In vitro dis­solution rate studies of mefenamic acid, mefenamic acid-β-cyclodextrin physical mixture and inclusion complex were conducted using basket method and water as dissolution medium. Mefenamic acid-β-cyclodextrin inclusion complex showed increasing dissolution rate compared to mefenamic acid-β-cyclodextrin physical mixture and mefenamic acid.   Key words: mefenamic acid, β-cyclodextrin, freeze drying, inclusion complex, dissolution rate
The formation of inclusion complex of phenobarbital with hydroxypropyl-β-cyclodextrine Isadiartuti, Dewi; ., Suwaldi
INDONESIAN JOURNAL OF PHARMACY Vol 16 No 1, 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 (325.436 KB) | DOI: 10.14499/indonesianjpharm0iss0pp28-37

Abstract

Phenobarbital, a hypnotic and sedative agent, was found to form inclusion complex with hydroxypropyl-β-cyclodextrine at 1:1 molar ratio. The formation of inclusion complex in the solution was detected due to the increased solubility of phenobarbital and in the solid was confirmed by differential scanning calorimetry, X-Ray diffractometry, and infrared spectroscopy.In the solid, inclusion complex was prepared by freezed drying method. The inclusion complex formed was characterized, compared with phenobarbital, hydroxypropyl-β-cyclodextrine, and the physical mixture of phenobarbital and hydroxypropyl-β-cyclodextrine.Analyses using DSC and X-ray diffractometry showed that phenobarbital formed inclusion complex with hydroxypropyl-β-cyclodextrine.Key words : phenobarbital, hydroxypropyl-β-cyclodextrine, inclusion complex
Antiseptic activity evaluation of piper leave from Piper betle Linn extract in hand gel antiseptic preparation Sari, Retno; Isadiartuti, Dewi
INDONESIAN JOURNAL OF PHARMACY Vol 17 No 4, 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 (178.263 KB) | DOI: 10.14499/indonesianjpharm0iss0pp163-169

Abstract

It is known that piper leaves (sirih) from Piper betle Linn has been used traditionally as medicine, for example for mouthwash and wound curing. The usage of hand gels antiseptic preparation was getting increased in the current time as the incidence of desease caused by virus and bacteria like SARS appears.This research was aimed to develop preparation of hand gels from piper leaves extract obtained from extraction with hot water. The formulation of gels were made using 5%, 10%, 15%, 20% and 25% of piper leaves extract in Carbopol gel base. The evaluation of antiseptics activity was carried out using the Replica method. A series of test was done by pouring the gels at hand palm and slightly tap the thumb fingerprint to nutrient agar media. The media was incubated at 37°C for 24 hours,and the number of colonies of microorganism was counted. The antiseptic activity of the gels also compared with two hand gels antiseptic preparation containing ethanol and triclosan as antiseptic agentThe result showed that the piper leaves extract gels had a transparent pale yellow performance. The gel preparation with concentration of 15% extract had activity to reduce the microorganism of skin normal flora up to 50%. Yet the 25% concentration of piper leave extract could eliminate all the microorganism. It was also known that the 15% piper leaves extract gel had no significance different with the ethanol preparation, since the 20% and 25% piper leaves extract gels had similar antiseptic activity to the triclosan preparation.Key words: piper leaves extract, gel, antiseptic activity, replica methods
The thermodynamics of inclusion complex of phenobarbital with hydroxypropyl-β-cyclodextrin Martodihardjo, Suwaldi; Isadiartuti, Dewi
INDONESIAN JOURNAL OF PHARMACY Vol 18 No 2, 2007
Publisher : Faculty of Pharmacy Universitas Gadjah Mada, Yogyakarta, Skip Utara, 55281, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (305.749 KB) | DOI: 10.14499/indonesianjpharm0iss0pp57-62

Abstract

Cyclodextrins are cyclic oligosaccharides which have been used extensively to improve the solubility in the formation of inclusion complex. The ability of cyclodextrin to form an inclusion complex has been attributed to factors including size of cyclodextrin cavity to the guest molecule and thermodynamics of their interactions.In this study, complex formation of phenobarbital and hidroxypropyl-β-cyclodextrin in the acetate buffer 0.01 M pH 4.4 and phosphate buffer 0.01 M pH 7.4 all with μ =0.10 and at temperatures of 32.o, 37.o, and 42o±0.5oC were determined.The results showed that phenobarbital formed inclusion complex with hidroxypropyl-β-cyclodextrin. The interaction shown a negative enthalphy (ΔH < 0 ), a spontaneous processes (ΔG < 0) and an increase in the entropy of the system (ΔS > 0).Key words : phenobarbital and hidroxypropyl-β-cyclodextrin, inclusion complex, thermodynamics