Wulan Tri Wahyuni
Division of Analytical Chemistry, Department of Chemistry, Faculty of Mathematics and Natural Sciences, Bogor Agricultural University, Dramaga-Bogor

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Potensi Daerah Sidik Jari Spektrum Inframerah Sebagai Penanda Bioaktovitas Ekstrak Tanaman Obat Darusman, Latifah Kosim; Heryanto, Rudi; Rafi, Mohamad; Wahyuni, Wulan Tri
Jurnal Ilmu Pertanian Indonesia Vol 12, No 3 (2007): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

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Abstract

Efficacy and quality of medicinal plant extracts depend on chemical composition therein. Therefore, to ensure its efficacy orquality, the chemical composition of extracts have to be analyzed based on its chemical marker or its chemical pattern. This study tried to develop a method for extracts quality assay based on infrared spectrum in fingerprint region and extracts inhibition activity to xanthine oxidase. Five extracts from kunyit (Curcuma domestica), temulawak ( C xanthorriza), jahe (Zingiber officina/e), temukunci (Boesenbergia pandurata), and cabe jawa (Piper retrofractum) were tested to inhibit xanthine oxidase activity. The bioactive data of extracts and its infrared spectrum was analyzed using PCA and PLS-DA (partial least squarediscriminant analysis). Almost all extracts that were tested showed inhibition activity to xanthine oxidase activity, except the extract of jahe. The result showed that PCA can group all of extract into each of their region. Meanwhile, PLS-DA has shown to be a good prediction model for classifying extracts based on fingerprint region of its mR Spectrum and its biological activity. Keywords: fingerprint, mR spectra, compound marker, xanthine oxidase
Potensi Daerah Sidik Jari Spektrum Inframerah Sebagai Penanda Bioaktovitas Ekstrak Tanaman Obat Darusman, Latifah Kosim; Heryanto, Rudi; Rafi, Mohamad; Wahyuni, Wulan Tri
Jurnal Ilmu Pertanian Indonesia Vol 12, No 3 (2007): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

Show Abstract | Original Source | Check in Google Scholar | Full PDF (257.806 KB)

Abstract

Efficacy and quality of medicinal plant extracts depend on chemical composition therein. Therefore, to ensure its efficacy orquality, the chemical composition of extracts have to be analyzed based on its chemical marker or its chemical pattern. This study tried to develop a method for extracts quality assay based on infrared spectrum in fingerprint region and extracts inhibition activity to xanthine oxidase. Five extracts from kunyit (Curcuma domestica), temulawak ( C xanthorriza), jahe (Zingiber officina/e), temukunci (Boesenbergia pandurata), and cabe jawa (Piper retrofractum) were tested to inhibit xanthine oxidase activity. The bioactive data of extracts and its infrared spectrum was analyzed using PCA and PLS-DA (partial least squarediscriminant analysis). Almost all extracts that were tested showed inhibition activity to xanthine oxidase activity, except the extract of jahe. The result showed that PCA can group all of extract into each of their region. Meanwhile, PLS-DA has shown to be a good prediction model for classifying extracts based on fingerprint region of its mR Spectrum and its biological activity. Keywords: fingerprint, mR spectra, compound marker, xanthine oxidase
AKTIVITAS PENGHAMBATAN α-GLUCOSIDASE OLEH KOMBINASI EKSTRAK ETANOLIK BUAH Phaleria macrocarpa (SCHEFF.) BOERL. DAN DAUN Annona muricata LINN. Rahmi, Era; Wahyuni, Wulan Tri; Darusman, Latifah Kosim; Suparto, Irma Herawati
Majalah Obat Tradisional Vol 21, No 2 (2016)
Publisher : Faculty of Pharmacy, Universitas Gadjah Mada

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Abstract

Buah Phaleria macrocarpa dan daun Annona muricata telah dilaporkan memiliki aktivitas antidiabetes dengan menginhibisi aktivitas enzim α-glukosidase. Masing-masing tanaman herbal tersebut menunjukkan aktivitas inhibisi yang rendah terhadap enzim α-glukosidase. Kombinasi dua tanaman ini diharapkan dapat memberikan efek sinergis. Penelitian ini dilakukan untuk mengevaluasi aktivitas inhibisi enzim α-glukosidase gabungan ekstrak etanol buah P. macrocarpa dan daun A. muricata dan mengidentifikasi profil kromatografi lapis tipis (KLT) masing-masing buah P. macrocarpa, daun A. Muricata dan gabungan ekstrak yang memiliki aktivitas terbaik. Ekstraksi dilakukan dengan teknik maserasi menggunakan etanol 96%. Kombinasi ekstrak gabungan diformulasi berdasarkan nilai IC50 dari masing-masing ekstrak. Hasil analisis menunjukkan bahwa aktivitas inhibisi bergantung pada konsentrasi, dengan nilai IC50 masing-masing ekstrak buah P. macrocarpa dan daun A. Muricata secara berturut-turut adalah 261.343 dan 428.790 µg/mL. Gabungan ekstrak yang memiliki aktivitas inhibisi tertinggi (84.52±0.79%) terdiri dari gabungan ekstrak buah mahkota dewa pada konsentrasi IC50 dan ekstrak daun sirsak pada konsentrasi 2/3 IC50. Berdasarkan profil KLT, terdeteksi adanya senyawa bioaktif pada ekstrak gabungan yang memiliki aktivitas paling baik, yang mana senyawa tersebut juga terdeteksi pada masing-masing ekstrak. Hal ini dapat diasumsikan bahwa dengan meningkatnya kandungan senyawa fitokimia yang terkandung dalam gabungan ekstrak dapat dihasilkan suatu efek sinergis.
Deteksi Kurkumin dan Bisdemetoksikurkumin dengan Teknik Voltammetri Menggunakan Elektrode Boron-Doped Diamond Wahyuni, Wulan Tri; Darusman, Latifah Kosim; Diksy, Yuris
ALCHEMY Jurnal Penelitian Kimia Vol 14, No 2 (2018): Vol 14, No 2 (2018): Alchemy Jurnal Penelitian Kimia
Publisher : UNIVERSITAS SEBELAS MARET (UNS)

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Abstract

Pada penelitian ini metode deteksi kurkumin dan bisdemetoksikurkumin dikembangkan dengan teknik voltammetri siklik menggunakan elektrode boron-doped diamond. Voltammogram siklik kurkumin dan bisdemetoksikurkumin dalam larutan elektrolit tetrabutilamonium heksafluorofosfat (TBAPF6)-asetonitril masing-masing menunjukkan 2 puncak oksidasi, yaitu pada potensial +0,4 V dan +1,9 V vs. Ag/AgCl untuk kurkumin, serta +0,6 V dan +2,0 V vs. Ag/AgCl untuk bisdemetoksikurkumin. Hubungan linear diperoleh antara konsentrasi kurkumin maupun bisdemetoksikurkumin dengan arus puncak oksidasinya. Hubungan linear  yang diperoleh adalah I(µA) = 8619,9C (M) + 0,7285 (R2=0,9995) dan I(µA) = 14658C (M) + 16,388 (R2=0,9299) berturut-turut untuk kurkumin puncak pertama dan kedua, serta I(µA) = 7953,2C (M) + 5,3977 (R2=0,9871) dan I(µA) = 5807,7 C (M) + 7,7616 (R2=0,9981) untuk bisdemetoksikurkumin puncak pertama dan kedua. Aplikasi metode yang dikembangkan terhadap sampel buatan yang mengandung campuran kurkumin dan bisdemetoksikurkumin menghasilkan 3 puncak oksidasi pada potensial +0,3 V, +1,2 V, dan +2,0 V vs Ag/AgCl mengindikasikan terjadinya tumpang tindih antara puncak kurkumin dan BDMC serta pergeseran puncak oksidasi. Nilai presisi pengukuran dengan metode yang dikembangkan ialah 15,86 dan 15,15% untuk kurkumin, serta 9,85 dan 31,47% untuk bisdemetoksikurkumin. Sementara nilai akurasi pengukuran ialah sebesar 96,69 dan 125,36% untuk kurkumin, serta 97,95 dan 127,54% untuk bisdemetoksikurkumin masing-masing berdasarkan puncak 1 dan 2. Hasil yang diperoleh menunjukkan performa analitik metode yang dikembangkan masih perlu ditingkatkan sebelum diaplikasikan untuk analisis kuantitatif.Detection of Curcumin and Bisdemetoxycurcumin by Voltammetric Technique using a Boron-Doped Diamond Electrode.  This study develops a cyclic voltammetry method for simultaneous detection of curcuminoid by using boron-doped diamond electrode. Curcumin and bisdemethoxycurcumin (BDMC) in tetrabutylammonium hexafluorophosphate (TBAPF6)-acetonitrile as electrolyte solution showed two oxidation peaks at +0.4 V and +1.9 V for curcumin, while those for BDMC appeared at +0.6 V and +2.0 V. Reduction peaks of both standards were not observed. In the optimum conditions, this method showed linear correlation between concentration of curcumin and BDMC with it’s oxidation peak current. The equations of I(µA) = 8619.9(C) (M) + 0.7285 (R2=0,9995) and I(µA) = 14658(C) (M) + 16.388 (R2=0.9299) were obtained for curcumin, I(µA) = 7953.2(C) (M) + 5.3977 (R2=0,9871) and I(µA) = 5807.7(C) (M) + 7.7616 (R2=0.9981) for BDMC. Meanwhile, the measurement of the artificial samples containing a mixture of curcumin and BDMC showed three oxidation peaks at +0.3 V, +1.2 V, and +2.0 V. This result indicated an overlapping between curcumin and BDMC peaks and peak shifting. Precision of the developed method was expressed as percent RSD, giving value of 15.86 and 15.15% for curcumin, and 9.85 and 31.47% for BDMC. The accuracy was 96.69 and 125.36% for curcumin, meanwhile for BDMC was 97.95 and 127.54% for peak 1 and 2. The result indicated that the method required further improvement before applied for quantitative analysis.
Optimization and Validation of High Performance Liquid Chromatographic Fingerprint of Phyllanthus niruri Wahyuni, Wulan Tri; Darusman, Latifah K.; Wigena, Aji Hamim
Indonesian Journal of Chemistry Vol 14, No 2 (2014)
Publisher : Universitas Gadjah Mada

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Split-plot mixture-mixture design has been applied for optimization of Phyllanthus niruri chromatographic fingerprint. The design was applied for unreplicated and simultaneous optimization of extraction mixture and chromatographic mobile phase mixture. The whole-plot was extraction solvent contained various combinations of methanol, ethyl acetate and dichloromethane in a simplex centroid with axial design. The sub-plot was reversed phase chromatographic mobile phase in simplex centroid design contained varying proportions of methanol, acetonitrile and acetonitrile:water (55:45 v/v). Each extract was eluted with seven mobile phases of high performance liquid chromatography and detected at 210, 225 and 254 nm. The optimum condition was determined based on the number of peaks. The correlation between extraction solvent, chromatographic mobile phase and number of peak were evaluated with Ordinary Least Square method. The root mean square error of calibration and root mean square error of prediction obtained at 210, 225 and 254 nm were 1.8634 and 4.0076; 2.2220 and 5.2839; 1.5436 and 2.2606, respectively. The optimum condition was obtained when the ethyl acetate extract was eluted with acetonitrile:water (55:45 v/v) and detected at 254 nm. Precision of retention time at optimum condition was excellent, with the relative standard deviation in a range of 0.0698% and 0.3006%.
FIRST-ORDER ULTRAVIOLET DERIVATIVE SPECTROPHOTOMETRIC METHODS FOR DETERMINATION OF RESERPINE IN ANTIHYPERTENSION TABLET Darusman, Latifah K; Rafi, Mohamad; Wahyuni, Wulan Tri; Azrianiningsari, Rizna
Indonesian Journal of Chemistry Vol 12, No 3 (2012)
Publisher : Universitas Gadjah Mada

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A new ultraviolet derivative spectrophotometry (UVDS) method has been developed for determination of reserpine in antihypertension tablets. A first-order UVDS based on the measurement of the distance between peaks to baseline (DZ) at the wavelength of 312 nm was used. Evaluation of analytical performance showed that accuracy as percentage recovery was 99.18-101.13%, precision expressed as relative standard deviation (RSD) was 1.91% and linear correlation was also obtained 0.9998 in the range of 10-50 µg/mL. Estimation of limit of detection and limit of quantitation was 0.8868 µg/mL and 2.6874 µg/mL, respectively. As a reference method, HPLC methods from United States Pharmacopiea (USP) were used. Commercially tablets available were analyzed by the two methods. The content of reserpine in tablets was found 0.2260±0.0033 mg by UVDS and 0.2301±0.0051 mg by the USP methods. The result obtained from the two methods was compared statistically using F-test and t-test and showed no significant differences between the variance and mean values of the two methods at 95% confidence level. This method was faster, easier, low cost and gave result as well as the reference method published by USP.
Antibacterial and Antibiofilm Activity of Daemonorops draco Resin Wahyuni, Wulan Tri; Purwanti, Sri; Batubara, Irmanida
Biosaintifika: Journal of Biology & Biology Education Vol 10, No 1 (2018): April 2018
Publisher : Department of Biology, Faculty of Mathematics and Sciences, Semarang State University . Ro

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Daemonorops draco has been reported for its antibacterial activity and empirically used for wound healing by Anak Dalam ethnic at Jambi Province, Sumatera-Indonesia. This study was performed to evaluate antibacterial and antibiofilm activity of D. draco resin collected from Jambi. D. draco resin was extracted using n-hexane, ethyl acetate and methanol, respectively. Antibacterial activity of the extracts was evaluated using agar diffusion method against Staphylococcus aureus and Eschericia coli, whereas the minimum inhibitory concentration (MIC) and minimum bacteriacidal concentration (MBC) was determined by microdilution method. In addition, antibiofilm activity was evaluated by violet crystal method. The result showed that extraction yield of ethyl acetate was higher than methanol and n-hexane. Ethyl acetate and methanol extracts of D. draco exhibited stronger antimicrobial activity against S. aureus compare to n-hexane extract. MIC and MBC of methanol extract and chromatographic fraction (F5.1) of ethyl acetate extract were 0.5 and 1.0 mg/mL, respectively. In addition, antibiofilm assay revealed that all extracts were inhibit initial attachment of bacteria cell in biofilm formation. This result revealed a novel information that  D. draco extracts was potential as inhibitor of biofilm formation. TLC bioautography of D. draco extracts indicated that constituent with Rf of 0.71 performed antimicrobial activity against S. aureus. This finding expected to strengthen the scientific backup for utilization of D. draco by society.
Deteksi Simultan Kuersetin dan Rutin Menggunakan Screen-Printed Carbon Electrode Termodifikasi Grafena Elinda, Tamida; Wahyuni, Wulan Tri; Rohaeti, Eti
Jurnal Kimia Valensi Jurnal Kimia VALENSI Volume 5, No. 1, Mei 2019
Publisher : Department of Chemistry Faculty of Sciences and Technology UIN Jakarta

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Kuersetin dan rutin merupakan senyawa antioksidan alami yang termasuk golongan flavonoid. Senyawa ini dapat dideteksi dengan beberapa teknik analisis, salah satunya dengan teknik elektrokimia. Pada penelitian ini, deteksi simultan kuersetin dan rutin dilakukan dengan teknik voltametri siklik menggunakan screen printed carbon electrode (SPCE) termodifikasi grafena. Elektrode disiapkan melalui modifikasi elektrode kerja SPCE dengan campuran grafena:natrium poliakrilat (1:1). Larutan etanol 70%:bufer fosfat pH 7 (6:4) digunakan sebagai elektrolit dalam pengukuran kuersetin dan rutin. Hasil penelitian menunjukkan puncak oksidasi kuersetin dan rutin terdeteksi pada potensial 0.179 V dan 0.310 V vs Ag/AgCl. SPCE termodifikasi grafena menghasilkan intensitas arus oksidasi dan sensitivitas yang lebih tinggi pada pengukuran kuersetin dan rutin. Deteksi simultan kuersetin dan rutin menggunakan SPCE termodifikasi grafena menunjukkan linearitas dengan R2 = 0.9905 dan R2 = 0.9816, masing-masing untuk kuersetin dan rutin. Limit deteksi pengukuran kuersetin dan rutin masing-masing sebesar 0.5369 mM dan 0.7495 mM serta limit kuantitasi sebesar 1.7898 mM dan 2.4985 mM. Presisi pengukuran kuersetin dan rutin memiliki nilai simpangan baku relatif (%SBR) sebesar 2.14% dan 2.44%, berturut-turut untuk kuersetin dan rutin. Hal ini menunjukkan bahwa SPCE termodifikasi grafena cukup potensial untuk deteksi simultan kuersetin dan rutin secara elektrokimia. Kata kunci: Grafena, kuersetin, rutin, screen printed carbon electrode, voltametri siklik. Quercetin and rutin are natural antioxidant from flavonoid group. The compounds can be detected using several analytical technique, including electrochemical technique due to its redox activity. In this study, simultaneous detection of quercetin and rutin was performed at graphene-modified screen printed carbon electrode (SPCE) using cyclic voltammetry technique. Graphene-modified SPCE was prepared from mixture of graphene:sodium polyacrylate (1:1) via drop casting method. Ethanol 70%:phosphate bufer pH 7 (6:4) was used as electrolyte solution for quercetin and rutin measurement. The result shows that oxidation peak of quercetin and rutin was detected at potential of 0.179 V and 0.310 V vs Ag/AgCl, respectively. Graphene-modified SPCE produce higher intensity of oxidation current and higher sensitivity for quercetin and rutin measurement. Simultaneous detection of quercetin and rutin at graphene modified SPCE provide linearity with R2 = 0.9905 and R2 = 0.9816, respectively for quercetin and rutin. Detection limits of quercetin and rutin respectively was 0.5369 mM and 0.7495 mM while limit quantitation was 1.7898 mM dan 2.4985 mM. Precision of quercetin and rutin measurement was moderate with percent relative standard deviation (%RSD) of 2.14% and 2.44%, consecutively for quercetin and rutin. This suggests that graphene-modified SPCE is potential for simultaneous electrochemical detection of quercetin and rutin. Keywords: Cyclic voltammetry, graphene, quercetin, rutin, screen printed carbon electrode.
Metode Ekstraksi dan Pemisahan Optimum Untuk Isolasi Xantorizol dari Temulawak (Curcuma xanthorrhiza) Wahyuni, Wulan Tri; Herdiyanto, Herdiyanto; Rafi, Mohamad
Jurnal Jamu Indonesia Vol 2 No 2 (2017): Jurnal Jamu Indonesia
Publisher : Pusat Studi Biofarmaka Tropika LPPM IPB; Tropical Biopharmaca Research Center - Bogor Agricultural University

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Xantorizol merupakan senyawa penciri utama temulawak (Curcuma xanthorrhiza). Penelitian ini bertujuan menentukan metode ekstraksi dan pemisahan optimum untuk isolasi xantorizol dari rimpang temulawak. Maserasi dan sokletasi digunakan untuk mengekstraksi xantorizol dengan pelarut metanol, dietil eter, dan n-heksana. Pemisahan dilakukan dengan kromatografi kolom dan kromatografi lapis tipis (KLT) preparatif dan hasil pemisahan dikarakterisasi berdasarkan spektrum inframerah dan kromatografi gas-spektrum massa (KG-SM), sementara persentase kemurniannya ditentukan dengan kromatografi cair kinerja tinggi. Ekstrak n-heksana dari teknik maserasi memiliki kandungan xantorizol lebih tinggi dibanding ekstrak lainnya yaitu sebesar 168 mg/g sampel. Fraksi ke-4 hasil pemisahan kolom terhadap ekstrak n-heksana memberikan dua spot pada KLT dengan Rf 0.54 dan 0.68, spot dengan Rf 0.54 diduga merupakan xantorizol (dikonfirmasi dengan KG-SM). Pemurnian lebih lanjut dengan KLT preparatif terhadap fraksi ke-4 menghasilkan xantorizol dengan rendemen sebesar 0.016 % berdasar bobot sampel dan tingkat kemurnian sebesar 87.40 %.
Analisis Sidik Jari Kromatografi Lapis Tipis Rimpang Temu Mangga (Curcuma mangga) Syafi’i, Makmum; Rohaeti, Eti; Wahyuni, Wulan Tri; Rafi, Mohamad; Septaningsih, Dewi Anggraini
Jurnal Jamu Indonesia Vol 3 No 3 (2018): Jurnal Jamu Indonesia
Publisher : Pusat Studi Biofarmaka Tropika LPPM IPB; Tropical Biopharmaca Research Center - Bogor Agricultural University

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Profil sidik jari kromatografi lapis tipis (KLT) dapat dimanfaatkan untuk kendali mutu bahan baku maupun produk tumbuhan obat. Penelitian ini bertujuan mengembangkan metode analisis sidik jari rimpang temu mangga (Curcuma mangga) untuk kendali mutunya. Rimpang kering temu mangga diekstraksi menggunakan metanol dan dianalisis sidik jari KLT. Kloroform:etil asetat (8.5:1.5) merupakan fase gerak optimum yang memisahkan 11 pita dari rimpang temu mangga dengan keterpisahan yang baik dan memiliki pita khas biru tua (Rf 0.36). Demetoksikurkumin terdeteksi pada rimpang temu mangga dengan warna jingga kecoklatan pada UV 366 nm (Rf 0.48) setelah diderivatisasi dengan pereaksi asam sulfat 10%. Pengujian spesifitas terhadap rimpang lain dalam satu genus, rimpang temu mangga menunjukan pola yang berbeda. Validasi metode analisis sidik jari KLT memenuhi kriteria keberterimaan, sehingga metode ini dapat digunakan untuk kendali mutu rimpang temu mangga.