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All Journal HAYATI Journal of Biosciences Jurnal Ilmu Pertanian Indonesia Jurnal Teknologi Industri Pertanian VALENSI Jurnal Veteriner JURNAL KIMIA SAINS DAN APLIKASI Jurnal Natur Indonesia JURNAL SAINS DAN TEKNOLOGI INDONESIA Microbiology Indonesia BIOTROPIA - The Southeast Asian Journal of Tropical Biology Jurnal Penelitian Tanaman Industri Buletin Penelitian Tanaman Rempah dan Obat AGRIVITA, Journal of Agricultural Science SEMIRATA 2015 Biology, Medicine, & Natural Product Chemistry Jurnal Sumberdaya Hayati Jurnal Kimia Mulawarman Indonesia Chimica Acta Science and Technology Indonesia Al-Kimia Indonesian Journal of Chemistry Biosaintifika: Journal of Biology & Biology Education Journal of Tropical Crop Science Jurnal Penelitian Tanaman Industri (Littri) Buletin Penelitian Tanaman Rempah dan Obat Jurnal Agrotropika Makara Journal of Science Molekul: Jurnal Ilmiah Kimia Jurna Beta Kimia Jurnal Tumbuhan Obat Indonesia Borneo Journal of Pharmacy Serambi Engineering CEFARS : JURNAL AGRIBISNIS DAN PENGEMBANGAN WILAYAH Jurnal Agribisnis dan Pengembangan Wilayah

Dyah Iswantini

Departemen Kimia, Fakultas Matematika Dan Ilmu Pengetahuan Alam, Institut Pertanian Bogor, Kampus IPB Darmaga, Bogor 16680

Author-ID : 290216

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Materials Science & Nanotechnology Medicine & Pharmacology Physics Public Health Veterinary

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FORMULASI LARVASIDA NABATI BERBASIS MINYAK BIJI KAMANDRAH (Croton tiglium L.) TERSTANDAR SEBAGAI PENCEGAH PENYAKIT DEMAM BERDARAH DENGUE Evul Winoto; Dyah Iswantini; Irmanida Batubara; Upik Kesumawati Hadi
Buletin Penelitian Tanaman Rempah dan Obat Vol 24, No 2 (2013): Buletin Penelitian Tanaman Rempah dan Obat
Publisher : Pusat Penelitian dan Pengembangan Perkebunan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21082/bullittro.v24n2.2013.%p

ABSTRAKKamandrah (Croton tiglium L.) merupakan tanaman obat yang banyak terdapat di Kalimantan. Biji kamandrah banyak dimanfaatkan sebagai obat pencahar, racun ikan, dan pembunuh jentik nyamuk. Penelitian ini bertujuan mendapatkan formula minyak biji kamandrah untuk larvasida nabati yang efektif, aman dan mendapatkan minyak kamandrah terstandar sebagai bahan baku larvasida nabati. Analisis fisiko kimia minyak biji kamandrah hasil budidaya di Sukabumi memberikan hasil kadar air 0,33%, keasaman 0,09%, viskositas 4,1 cP, berat jenis 0,9425 g ml-1, indeks bias 1,4788 serta kadar asam lemak bebas 1,65%. Hasil uji ini lebih baik dibanding dengan tanpa budidaya dari Kalimantan dan Sukabumi. Uji menggunakan spektrofotometri menunjukkan kandungan piperine minyak biji kamandrah hasil budidaya Sukabumi sebesar 0,046%; tanpa budidaya dari Sukabumi dan Kalimantan masing-masing 0,043% dan 0,037%. Kandungan piperine berpengaruh terhadap hasil uji efikasi larva nyamuk Aedes aegypti instar III, nilai LC50 pengamatan 24 jam minyak kamandrah hasil budidaya Sukabumi sebesar 114,4 ppm, minyak kamandrah tanpa budidaya dari Sukabumi dan Kalimantan masing-masing 125,2 dan 212,9 ppm. Formulasi larvasida metode granulasi basah terhadap minyak biji kamandrah hasil budidaya Sukabumi menunjukkan, kandungan minyak kamandrah 15% dengan emulsifier gom arab memberikan hasil paling efektif dengan nilai LC50 24 jam sebesar 210,01 ppm. Uji stabilitas formula larvasida nabati minyak biji kamandrah yang disimpan pada temperatur 30, 40 dan 50oC selama 28 hari menunjukkan tidak ada perubahan fisik pada granul. Selama penyimpanan terjadi peningkatan kandungan piperine dalam formula larvasida antara 0,6-234%. Uji durabilitas formula larvasida terhadap larva A. aegypti menunjukkan penurunan potensi larvasida sampai di bawah 50% pada hari ke 12 setelah aplikasi.

Inhibition Kinetics of Sida rhombifolia L. Extract Toward Xanthine Oxidase by Electrochemical Method Dyah Iswantini; Muammar Yulian; Sri Mulijani; Trivadila Trivadila
Indonesian Journal of Chemistry Vol 14, No 1 (2014)
Publisher : Universitas Gadjah Mada

Sida rhombifolia L. is a traditional medicinal plant that has been known with potential as antigout. The previous research suggested that flavonoids crude extract of S. rhombifolia had an inhibitory activity toward xanthine oxidase by 71% and a spectrophotometric measurement showed that the type of flavonoids crude extract inhibition was a competitive inhibition. The purpose of the research was to investigate the type of inhibition kinetic of S. Rhombifolia’s ethanol extract by electrochemical method and to compare the measurements of linearity and sensitivity between spectrophotometric and electrochemical methods. The results showed that the yield of S. Rhombifolia’s ethanol extract was 9.82% with the inhibitory activity ranging from 13.64% to 82.69% (5.00-200 mg L-1) and IC50 value was 91.15±5.74 mg L-1. Allopurinol as a control showed the inhibitory activity of 15.26-70.95% (0.10-4.00 mg L-1) and IC50 value was 2.45±2.21 mg L-1. Inhibition kinetics of the ethanol extract caused a KM increase and unchange of VMAX. Based on the data, the type of inhibition kinetics was a competitive inhibition, with an inhibitor affinity (α) value of 3.18. Linearity of xanthine oxidase activity assay by electrochemical and spectrophotometric methods showed the range of 0.01-1.00 mM (R2 = 0.978) and 0.05-0.70 mM (R2 = 0.977) respectively. The sensitivity of electrochemical method was reported higher (0.95 μA mM-1) than the spectrophotometric method (0.007 min-1).

IN VITRO INHIBITION OF CELERY (Apium graveolens L.) EXTRACT ON THE ACTIVITY OF XANTHINE OXIDASE AND DETERMINATION OF ITS ACTIVE COMPOUND Dyah Iswantini; Tuti Hayati Ramdhani; Latifah K Darusman
Indonesian Journal of Chemistry Vol 12, No 3 (2012)
Publisher : Universitas Gadjah Mada

The objective of this study was to determine the inhibition effect of celery extracts toward xanthine oxidase by in vitro method, and its active compounds. Roots and herb of celery were extracted using water and ethanol solvents. Results indicated that the herbal ethanol extract had the highest inhibition effect (91.40%) at 1400 ppm. The components contained in the herbal ethanol extract were then separated by column chromatography using the best eluent (chloroform : ethyl acetate at 7:3). All of the fractions had inhibition effect greater than 50%. The fraction number 4 was the one with the highest inhibition effect followed by fraction 5 with inhibition percentage of both fractions at 200 ppm were 88.62 and 85.44%, respectively. The analysis of the ultraviolet spectrum of fraction 4 showed the presence of π-π* transition which was resulted by the aromatic C=C, -OH, and C-O chromophores, and also showing the n-σ* transition which was given by -C=O chromophore. The infrared spectrum analysis indicated the presence of aromatic -C=C, -OH, and C=O functional groups. Based on the phytochemical assay and both instrumental spectrums, it was thought that the active compounds of fraction 4 and 5 were in the flavonoid group.

Potential Adenostemma lavenia and Muntingia calabura Extracts to Inhibit Cyclooxygenase-2 Activity as a Therapeutic Strategy for Anti-inflammation: Experimental and Theoretical Studies Bagaskoro Tuwalaid; Dyah Iswantini; Setyanto Tri Wahyudi
Indonesian Journal of Chemistry Vol 22, No 3 (2022)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.70794

Continuous inflammation can cause new and more severe diseases, thus effective treatments are needed. One of the common inflammation treatments is given by reducing prostaglandins' production through the inhibition of COX-2 activity. This experiment aims to examine the potential application of plant extracts of Adenostemma lavenia and Muntingia calabura (Jamaica cherry) as anti-inflammatory agents in inhibiting COX-2 activity through in silico and in vitro assays. Molecular docking and molecular dynamics simulation were accomplished to evaluate the stability of the complex between COX-2 and ligands. The COX-2 inhibition was determined using the COX-2 Inhibitor Screening Assay KIT. Based on the docking results, the active compound from A. lavenia, ligand 1a,9b-dihydro-1H-cyclopropa[a]anthracene, has the lowest binding energy of -8.7 kcal/mol. In comparison, M. calabura contains 7-hydroxyflavone ligand with a Gibbs free energy of -9.1 kcal/mol. The molecular dynamics study demonstrates that COX-2 maintains its stability when forming interactions with selected compounds from all the tested extracts. The results of the COX-2 inhibition test showed that 96% EtOH extract of A. Lavenia at concentrations of 25 and 100 ppm had an inhibitory activity of 98%; meanwhile, 70% and 96% EtOH extracts of M. calabura at 1000 ppm concentration could inhibit COX-2 activity up to 100%. The results demonstrate that both plants show potential anti-inflammatory activity.

Highly Sensitive Phenol Biosensor Utilizing Selected Bacillus Biofilm Through an Electrochemical Method Ariyanti, Dita; Iswantini, Dyah; Sugita, Purwantiningsih; Nurhidayat, Novik; Effendi, Hefni; Ghozali, Ali Aulia; Kurniawan, Yehezkiel Steven
Makara Journal of Science Vol. 24, No. 1
Publisher : UI Scholars Hub

Show Abstract | Download Original | Original Source | Check in Google Scholar

An eco-friendly phenol biosensor from Bacillus biofilm was prepared and investigated. The biofilm, which produced tyrosinase enzyme, was successfully immobilized on a screen-printed carbon electrode surface. A total of 72 Bacillus isolates were utilized because of their capability to produce tyrosinase enzyme in tyrosine media. Among them, Bacillus isolate code 100 was selected because it produced an adequate amount of tyrosinase enzyme and a high potentiostat current. The response surface methodology was also used to optimize the phenol sensing condition through an electrochemical method. Results showed that the optimum condition was achieved after 6 days on a phosphate buffer solution (pH of 8), with an optical density of 0.33. Furthermore, the limits of detection and quantification were 3.0 and 13 ng/L, respectively. The measurements of precision yielded a relative standard deviation of < 5%, which is remarkable. Although the biosensor material was used for 35 days, the current throughout was still maintained at 90%, indicating that the evaluated biosensor material has the potential to be used for phenol monitoring on environmental samples in the near future.

Optimization and Validation of Electrochemical Biosensor Based on Pseudomonas sp. Biofilm Immobilized on Screen-Printed Carbon Electrode in Detecting Benzene Alfiah Alif; Dyah Iswantini; Henny Purwaningsih; Novik Nurhidayat; Ali Aulia Ghozali; Amalyah Febryanti
Jurnal Akta Kimia Indonesia (Indonesia Chimica Acta) Volume 15, No 1: June 2022
Publisher : Hasanuddin University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ica.v15i1.19008

Benzene is known as one of the hazardous compounds potentially interfering the health and polluting the environment. Generally, detecting benzene still requires a long analysis time and expensive costs. Therefore, this study aimed to evaluate the analytical performance of a biosensor with microbes as the biodetection element. Pseudomonas sp. biofilms which produce benzene dioxygenase enzyme and then immobilized on a Screen-Printed Carbon Electrode (SPCE). The results of the optimization of the biosensor obtained a benzene concentration of 3 mM, a bacterial density of 1.4x1011 cells/mL and suspension pH of 7.5. The optimization results are used to measure the analytical performance of the biosensor. The value of analytical performance produced on linearity is in the measurement range of 0.1 - 3 mM, the equation y = 7.4118x + 80.048 with R2 = 0.9744. The detection limit and quantity limit are 0.5630 mM and 1.8767 mM respectively, with a sensitivity of 7.4188 μA/mM. The precision obtained shows that the SPCE biofilm method has moderate accuracy with a %SBR value below 5%. The selectivity of this method still needs to increase, but the stability of the benzene biosensor increases up to 35 days with an activity of 100.36%. This indicates the immobilization of Pseudomonas sp. had potency as an alternative method for detecting benzene and it can be developed for a prototype.

Tyrosinase-Based Paper Biosensor for Phenolics Measurement Fretty Yurike; Dyah Iswantini; Henny Purwaningsih; Suminar Setiati Achmadi
Indonesian Journal of Chemistry Vol 22, No 5 (2022)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.72607

Environmental pollution resulting from various industrial activities is still a problem for developing countries. The high content of phenolics such as phenols, polyphenols, bisphenol A, catechol, m- and p-cresol from industrial activities are discharged into surface water, soil, and air. Periodic monitoring of the impact of these toxic pollutants is needed for proper control and handling. These detrimental chemicals are usually measured using conventional methods with many drawbacks such as expensive analysis costs, long measurement times, requiring competent analysts, and complicated instrument maintenance. However, the presence of tyrosinase-based paper biosensors is now considered the most promising tool in overcoming the challenges mentioned earlier because they can detect these components quickly, precisely, accurately, inexpensively, and can be measured in situ. The working principle of this biosensor sees optical changes such as dyes, redox processes, and physicochemical properties (aggregation or dispersion) due to the presence of analytes accompanied by the occurrence of color changes that appear. This biosensor uses a layer-by-layer electrostatic method, which causes the deposition of multi-layered films on solid surfaces. In this paper, we review the development of the tyrosinase-based paper biosensor method for phenolic measurement in water, air, and food that gives better results than the conventional methods.

Screening and Optimization Consortium Technique of the Bacillus megatherium and Saccharomyces cerevisiae Microbial Consortium for Ethanol Detection Nurdiani Nurdiani; Dyah Iswantini; Novik Nurhidayat; Wulan Tri Wahyuni; Agus Kartono
Jurnal Kimia Valensi Jurnal Kimia VALENSI Volume 9, No. 1, May 2023
Publisher : Syarif Hidayatullah State Islamic University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/jkv.v9i1.31506

Determination of alcohol content is very important in the food and beverage industry. Biosensor is an alternative to measuring ethanol content. Alcohol biosensors with a single microbe still have a narrow measurement area at ethanol concentrations, so a microbial consortium is needed to widen the range of measured ethanol concentrations. Therefore, it is necessary to screen the microbes from Bacillus sp and S. cerevisiae which have the potential to produce alcohol dehydrogenase (ADH) enzymes and optimize the consortium technique that can provide the best response to oxidation currents. In the yeast microbial screening of 14 S. cerevisiae isolates and 5 Bacillus sp isolates, it can be concluded that for the 14 yeast S. cerevisiae isolates that have the potential to produce ADH enzymes, there is one isolate with the SCRF code. For the 5 bacterial isolates of Bacillus sp that have the potential to produce ADH enzymes, all Bacillus isolates with the code Bacillus megatherium 29/9/14, Bacillus megatherium 23/6/22, Bacillus 6, Bacillus 53, and Bacillus 55. Based on the oxidation current data, Bacillus megatherium 23 /6/22 produces the highest current compared to other Bacillus isolates. The consortium technique that provides the highest current is the method of mixing 1:1 (µL) microbial suspension in an Eppendorf container. Optimization of the consortium's biofilms using the Response Surface Method was produced at 10 days of age, pH 7.5, and 75 µL of microbial suspension dripping volume.

Characterization of Ethanolic Extract of Streptomyces sp. as a Pancreatic Lipase Inhibitors Produced by Endophytic Streptomyces sp. AEBg12 Lenni Fitri; Anja Meryandini; Dyah Iswantini; Yulin Lestari
Biosaintifika: Journal of Biology & Biology Education Vol 9, No 2 (2017): August 2017
Publisher : Department of Biology, Faculty of Mathematics and Sciences, Semarang State University . Ro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/biosaintifika.v9i2.8907

Endophytic Streptomyces sp. AEBg12 isolated from Zingiber cassumunar (Bangle) is known to produce pancreatic lipase inhibitory compound. However, the characteristics of this active compound has not been reported yet. This study aimed to determine the characteristics of pancreatics inhibitory compound produced by Streptomyces sp. AEBg12 and to assess the role of endophytic actinobacteria in producing pancreatic lipase inhibitor using endophytic-free bangle tissue culture, wild bangle and compared with the activity of Streptomyces sp. AEBg12 endophytes. Supernatant of Streptomyces sp. AEBg12 was extracted using ethanol, ethyl acetate, and n-hexane solvents. Toxicity test was performed using larvae of shrimp Artemia salina. The results showed that the best solvent to obtain pancreatic lipase inhibitor compounds was ethanol. Phytochemical analysis showed that ethanolic extract of endophytic Streptomyces sp. AEBg12 contained flavonoids. IC50 value of ethanol extract was 180.83 µg/ml. The result of TLC showed that ethanolic extract of Streptomyces AEBg12 had a blue luminescence band indicated that there were either flavone, flavanones, flavonols or isoflavones. Inhibitory activity of Streptomyces sp. AEBg12 was higher than wild bangle and bangle tissue culture. The information from this study can be be used as a basic data for further characterization of the active compound, which might be developed as an antiobesity agent through its pancreatic lipase inhibitory activity.

Antigout Activity of The Spatholobus littoralis Hassk. Extract Fractions Against Xanthine Oxidase: Its Metabolite Profile and Inhibition Kinetics Rut Novalia Rahmawati Sianipar; Komar Sutriah; Dyah Iswantini; Trivadila; Suminar Setiati Achmadi
HAYATI Journal of Biosciences Vol. 31 No. 1 (2024): January 2024
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.4308/hjb.31.1.1-20

The Spatholobus littoralis Hassk. (S. littoralis Hassk.) is a native plant in Indonesia and has been widely used in traditional Dayaknese medicine for non-communicable degenerative diseases. One of these illnesses, known as gout, is caused by excessive uric acid in the blood, which is the catalytic byproduct of a xanthine oxidase (XO) enzyme. In this work, we investigated the inhibition kinetics of XO and identified bioactive compounds from the stem extract fractions of S. littoralis Hassk. using liquid chromatography-mass spectrometry/mass spectrometry (LC-MS/MS). Fractionation was carried out to obtain n-hexane, dichloromethane, and 1-butanol fractions from the water and 70% ethanol extracts. Fraction of 1-butanol from 70% ethanol and water extract displayed potent inhibitors of XO with IC50 value 116.91±3.51 and 137.15±5.00 mg/L, respectively. Lineweaver-Burk plot analysis showed that the 1-butanol fraction from the two extracts inhibited XO competitively. The 1-butanol fraction from the two extracts has been further identified as a bioactive fraction. The majority of the compounds in the two active fractions were phenolics. These findings revealed that the 1-butanol fraction from the two extracts is promising as an antigout treatment in the future.

Co-Authors , Triadiati . TRIVADILA Adayani Nurjayanti Adelia, Nesha Adi Riyadhi Adiarso Afifi, Muhammad Ridho Agus Kartono Agus Sudiman Tjokrowardojo, Agus Sudiman Ahmad Sjahriza Ahmad, Shahrul Nizam Ai Susanti Akhiruddin Maddu Akmalina, Rifkah Alfiona, Della Ali Aulia Ghozali Ali Aulia Ghozali Alif, Alfiah Amalyah Febryanti Amalyah Febryanti Ana Fitriyani Anggia Murni Aninda, Yunita Anja Meryandini Bagaskoro Tuwalaid Budi Riza Putra Charlena Deden Saprudin Diah Ratnadewi Dian Siska RF Dinda Iryawati Dita Ariyanti Djumali Mangunwidjaja DJUMALI MANGUNWIDJAJA Dwiastuti, Rahma Eka Mardiah ELIZABETH MARTATILOFA Eti Rohaeti Euis Filaila Evul Winoto Evul Winoto Fadillah, Wendi Nurul Firdaus, Ridwan Fitriani Indahsari Franco, Christopher MM Fretty Yurike Fyrda Shellia Ghozali, Ali Aulia Hafshah, Nurul Haki, Horiana hanifah hanifah Harry Noviardi Hasim - Hefni Effendi Henny Purwaningsih Ida Ayu Putu Sri Widnyani Irmanida Batubara Ismet, Rhahmasari Joni Prasetyo, Joni Jovianto, Andrian Karnadi Komar Sutriah Kurniawan, Yehezkiel Steven latifah K Darusman Latifah K Darusman Latifah K. Darusman LATIFAH KOSIM DARUSMAN LATIFAH KOSIM DARUSMAN Lawa, Yosep Lenni Fitri Lenni Fitri Lestarani, Dewi M. Rafi Mahat, Mohd Muzamir Mardiana, Eni Mashuri Waite Maulidiyah Utami Muammar Yulian Naat, Johnson N. Nampiah Sukarno Neolaka, Yantus A B Nisa, Ulfiatun NONI NIRWANA Noor Roufiq Ahmadi Novia Rahma NOVIK NOVIK Novik Nurhidayat Novik Nurhidayat Novik Nurhidayat Novik Nurhidayat Novik Nurhidayat Novik Nurhidayat Novik Nurhidayat Novriyandi Hanif Nurdiani Nurdiani Ono Suparno Pius P. KETAREN Purbowatiningrum Ria Sarjono Purwantiningsih Sugita Putra, Sukma Triperdana Rahminiwati, Min Rani, Ismarani RESSY RIANDCI RHOITO FROISTA SILITONGA Rosihan Rosman Rosihan Rosman Rudi Heryanto Rut Novalia Rahmawati Sianipar Sagala, Zuraida Sandra Arifin Aziz Selvitia Ulandari Setyanto Tri Wahyudi Sianipar, Rut Novalia Rahmawati Sri Mulijani Subaryanti Subaryanti Subaryanti Subaryanti Subaryanti Sulitijorini, Sulitijorini SUMINAR SETIATI ACHMADI Taopik Ridwan Tatik Khusniati TRESNAWATI PURWADARIA Tuti Hayati Ramdhani Umi Cahyaningsih Upik Kesumawati Hadi UTUT WIDYASTUTI Waite, Mashuri Wasmen Manalu Wei Zhang Wendi Nurul Fadillah Wiwin Winarsih Wulan Tri Wahyuni YANTYATI WIDYASTUTI Yohana C. Sulistyaningsih Yohana Caecilia Sulistyaningsih Yulia Yellita YULIN LESTARI

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