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INHIBISI ENZIM α-GLUKOSIDASE OLEH SENYAWA FLAVONOID DAUN KELOR (Moringa oleifera) IN SILICO DAN IN VITRO Puspita, Puspa Julistia; Alimah, Shobiroh Nuur; Ambarsari, Laksmi; Wahyuni, Riksa Nur
Current Biochemistry Vol. 10 No. 2 (2023)
Publisher : IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/cb.10.2.3

Abstract

Moringa leaves flavonoid have potential to inhibit α-glucosidase but they have low bioavailability, so they are made in nanoparticles. It is also not known which specific flavonoid compounds from Moringa leaves have the potential to inhibit α-glucosidase. This research aimed to determine the inhibition potential of α-glucosidase by the moringa leaves flavonoid in silico through molecular docking and determine the inhibitory activity of α-glucosidase by moringa leaves flavonoid in extracts and nanoparticles in vitro. Moringa leaves flavonoid have potential to be a competitive inhibiton of α-glucosidase with the highest to lowest inhibitory potential are cryptochlorogenic acid, quercetin-3-O-beta-D-glucopyranoside, quercetin-3-glucoside, kaempferol-3-O-a-ramnoside, kaempferol-3-O-glucoside, epicathechins, catechins, quercetin, kaempferol, glucomoringin isothiocyanate. Cryptochlorogenic acid has the best potential with ΔG and Ki values -8.5 kcal/mol and 0.5788 μM. Inhibition α-glucosidase moringa leaves flavonoid in extract and nanoparticles respectively are classified as inactive (IC 50 = 5.84x10 3 ppm) and active (IC 50 = 1.59x10 1 ppm) in vitro, so nanoparticles can increase the inhibitory activity.
Optimization of PCR Conditions for Adding XhoI Restriction Sites to the Glucose Oxidase Gene of Aspergillus niger IPBCC 08.610 Aryani, Hanifah; Akbar, Nadhira Fathiaz; Kurniatin, Popi Asri; Fuad, Asrul Muhamad; Ambarsari, Laksmi
Current Biochemistry Vol. 11 No. 1 (2024)
Publisher : IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/cb.11.1.2

Abstract

Glucose oxidase (GOX) is naturally produced by fungi Aspergillus niger. The GOX enzyme catalyzes the oxidation reaction of β-D-glucose to produce δ-gluconolactone and hydrogen peroxide a (H2O2). Hydrolysis of δ-gluconolactone will produce gluconic acid. Gluconic acid and its derivatives have benefits in the pharmaceutical field as a drug for mineral deficiencies. A. niger IPBCC 08.610 is a local isolate that produce intracellular GOX with higher yield than extracellularly. GOX can be expressed extracellularly by cloning into the expression vector pPICZαB which has the signal peptide α-mating factor (α-MF). GOX gene construction needs to be done by adding some features such as XhoI restriction sites at the 5' and 3' ends, XbaI restriction site at 3’ side, and spacer peptide glu-ala-glu-ala at 5’ side. This research aims to optimize Polymerase Chain Reaction (PCR) conditions in two stages of amplification, stage I to copy the GOX gene and stage II to add those features so it is hoped that recombinant GOX can increase gluconic acid production. The results of primer concentration optimization showed that primers with a concentration of 10 µM produced clearer PCR amplicons than those with a concentration of 20 µM. The optimal temperature for amplification stage I is 58°C. The amplification stage II annealing temperature was modified with the first ten cycles based on the lowest Tm of primer value, 52°C, and the subsequent 25 cycles based on the highest Tm of primer value, 61°C.
Evaluasi Faktor Yang Mempengaruhi Ekstraksi Rimpang Temu Ireng Berdasarkan Aktivitas Penghambatan α-Glukosidase Artika, I Made; Ambarsari, Laksmi; Nurcholis, Waras
Jurnal Jamu Indonesia Vol. 3 No. 2 (2018): Jurnal Jamu Indonesia
Publisher : Tropical Biopharmaca Research Center, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jji.v3i2.57

Abstract

Terdapat beberapa faktor yang dapat digunakan dalam ekstraksi rimpang temu ireng yang memiliki aktivitas farmakologi. Penelitian ini bertujuan untuk mengidentifikasi faktor pH, konsentrasi etanol, suhu, waktu, dan rasio cairan-padatan dalam proses ekstraksi rimpang yang memberikan kontribusi signifikan sebagai inhibitor enzim a-glukosidase. Rancangan optimasi dilakukan dengan menggunakan faktoral fraksional 2(5-1). Urutan hasil dari ekstrak yang paling berkontribusi sebagai inhibitor enzim a-glukosidase: konsentrasi etanol > rasio cairan terhadap padatan > suhu > waktu > pH. Diantara faktor yang dianalisis menunjukkan bahwa konsentrasi etanol dan interaksi antara pH dan konsentrasi etanol merupakan faktor yang signifikan sebagai inhibitor enzim a-glukosidase. Dengan demikian, rimpang temu ireng memiliki potensi sebagai anti-hiperglikemia alami.
Gelatin Extraction and Characterization from Femur Bones of Bovine and Porcine with Acid Process Purwantiningsih Sugita; Muhamad Rifai; Ambarsari, Laksmi; Rahayu, Dyah Utami Cahyaning; Dianhar, Hanhan
Jurnal Jamu Indonesia Vol. 6 No. 1 (2021): Jurnal Jamu Indonesia
Publisher : Tropical Biopharmaca Research Center, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jji.v6i1.188

Abstract

Gelatin has been widely used as an additive in food industry pharmaceutical, and cosmetic. The similar physical appearance between bovine and porcine gelatin causes an issue for some communities like a Muslim due to awareness of halal food. This study aims to produce gelatin from femur bones of bovines with acid hydrolysis and their characteristics compared to standard gelatin of bovine and porcine. Bovine and porcine bones were soaked in 5% HCl for 10 days and every 2 days a HCl solution was replaced to get ossein. Ossein is hydrolyzed by gradual heating at 65, 75, and 85oC. Gelatin confirmed by the physico-chemical characters, FT-IR and analysis amino acid with HPLC.The results showed that the yield of bovine gelatin was 4.33%. The physico-chemical characters of bovine gelatin resulting from isolation and bovine gelatin standards are in conformity with porcine gelatin standards and meet the requirements of SNI 06-3735-1995 and GMIA. Therefore, bovine gelatin is specifically capable of substituting porcine gelatin for application in the pharmaceutical field. The FTIR spectrum of bovine gelatin shows the presence of amide A, amide I, amide II and amide III groups. The amino acid characters of gelatin were identified as glycine (13.57%) and proline (1.62%) for bovine gelatin and glycine (0.51%) and proline (0.09%) for porcine gelatin.
Novel Compounds Design of Acertannin, Hamamelitannin, and Petunidin-3-Glucoside Typical Compounds of African Leaves (Vernonia amygdalina Del) as Antibacterial Based on QSAR and Molecular Docking Kurniawan, Ilham; Ambarsari, Laksmi; Kurniatin, Popi Asri; Wahyudi, Setyanto Tri
Jurnal Jamu Indonesia Vol. 8 No. 2 (2023): Jurnal Jamu Indonesia
Publisher : Tropical Biopharmaca Research Center, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jji.v8i2.326

Abstract

Antibacterial secondary metabolites such as tannins and their derivatives are found in the Vernonia amygdalina Del. Antibiotic resistance can develop due to overuse, reducing the efficacy of drugs to prevent and treat infections. This research aims to use the Quantitative Structure-Activity Relationship (QSAR) and the semi-empirical method Austin Model 1 (AM1) to design a modified novel compound from African leaves that has improved antibacterial activity. This research includes a descriptor calculation of QSAR using AM1 MOE on typical compounds from African leaves, and calculation results are chosen based on a multilinear regression statistical analysis. The model equation represents the three primary parameters of QSAR, which are electronic, hydrophobic, and steric parameters, which will be used to measure modified compounds. Molecular docking using Autodock Tools (The Scripps Research Institute, USA), and analysis of results of docking Autodock Tools using Discovery Studio 3.5 Client. The best QSAR model obtained is LogEC50 = (0.829 x LogP) - (1,302 x AM1_HOMO) - (0.339 x AM1_dipole) - (5,128 x mr) + (0.145 x vol) - (11,355). The results showed that EC50 prediction of modified hamamelitannin has the best activity with the lowest ΔGbind -9.0 kcal/mol and inhibition constant of 0.249 μM. In summary, the novel compound's design calculation has better antibacterial activity, as indicated by a lower EC50, than fosfomycin or compounds without modification. The modified hamamelitannin compound was found to have better antibacterial activity (prediction EC50 = 0.1933 μM) than the original (experimental EC50 = 145.50 μM).
Molecular Docking Study of Bioactive Compounds from Curcuma aeruginosa Roxb. as Antioxidant and Anticancer Activities Ambarsari, Laksmi; Nurjanah, Siti; Artika, I Made; Fatriani, Rizka
Jurnal Jamu Indonesia Vol. 8 No. 2 (2023): Jurnal Jamu Indonesia
Publisher : Tropical Biopharmaca Research Center, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jji.v8i2.327

Abstract

Cancer is one type of dangerous disease that is increasing every year. Free radicals are the cause of gene mutations (cancer). Cancer will develop uncontrollably due to the occurrence of the cell cycle and the presence of compounds that trigger cell proliferation and inhibit the process of apoptosis. This cancer treatment is carried out by giving cyclin-dependent kinase2 (CDK2) and cyclooxygenase-2 (COX-2) inhibitor drugs to inhibit cancer development, as well as lipoxygenase (LOX) inhibitor drugs for the formation of free radicals. Curcuma aeruginosa RoxB., the plant, is known to have the potential for antioxidant and anticancer properties. This study aims to determine the molecular interaction between the dominant compound in the ethanol extract of C. aeruginosa with CDK2, COX-2, and LOX receptors. The type of ligand interaction with the receptor was determined through the parameters of affinity energy (∆G), inhibition constant (Ki), type of interaction, and percentage of binding site similarity (%BSS). The results showed that the gajutsulacton A had the best potential in inhibiting CDK2. The cucumenol may be a COX-2 inhibitor, and there are no compounds that can inhibit LOX as well as an antioxidant. Thus, our findings demonstrate the potential for C. aeruginosa bioactive to serve as anticancer candidate molecules against CDK2 and COX-2 receptors.
Cloning of the GOX-Xho Gene IPBCC 08.610 into Plasmid pTA2 and Its Characterization Aryani, Hanifah; Akbar, Nadhira Fathiaz; Fuad, Asrul Muhamad; Ambarsari, Laksmi; Kurniatin, Popi Asri
Jurnal Kimia Valensi Jurnal Kimia VALENSI, Volume 10, No. 2, November 2024
Publisher : Department of Chemistry, Faculty of Science and Technology Syarif Hidayatullah Jakarta State Islamic University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/jkv.v10i2.39602

Abstract

Glucose oxidase (GOX) from Aspergillus niger catalyzes the oxidation of β-D-glucose to δ-gluconolactone and hydrogen peroxide, making it valuable for industrial applications. Intracellular GOX exhibits higher activity than its extracellular counterpart. This study focuses on enhancing the extracellular production of GOX through recombinant DNA technology. This study aimed to reconstruct the GOX gene by adding XhoI sites at both ends, inserting a glu-ala-glu-ala spacer at the 5' end, and introducing an XbaI site at the 3' end. These modifications facilitate the cloning of the GOX-Xho gene into the pTA2 vector and its subsequent ligation into the pPICZαB expression vector, allowing for extracellular production of GOX through fusion with the α-mating factor (α-MF) signal peptide. The GOX-Xho gene was successfully amplified, cloned, and characterized. The pTA2-GOX-Xho recombinant plasmid was verified through sequencing and restriction analysis, confirming the present and correct orientation of the 1797 bp GOX-Xho gene. However, sequencing revealed several point mutations, necessitating further computational analysis to predict their impact on the enzyme's structure and function before recombinant protein expression.
Phytochemicals and Lipase Inhibition of Citronella, Galangal, and Sand Galangal: In Vitro–In Silico Approaches Aghnia, Diya; Hasim, Hasim; Ambarsari, Laksmi; Faridah, Didah Nur; Slameut, Fitria; Kandi, Rizky Putra
Jurnal Teknologi dan Industri Pangan Vol. 36 No. 2 (2025): Jurnal Teknologi dan Industri Pangan
Publisher : Perhimpunan Ahli Teknologi Pangan Indonesia bekerjasama dengan Departemen Ilmu dan Teknologi Pangan, IPB University Bogor, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.6066/jtip.2025.36.2.264

Abstract

Obesity is a major global health concern, often treated by inhibiting pancreatic lipase to reduce fat absorption. While chemical-based medicine is a widely used synthetic inhibitor, its side effects highlight the need for safer, natural alternatives. This study aimed to characterize the total phenolic content (TPC), total flavonoid content (TFC), antioxidant activity, and pancreatic lipase inhibition of citronella leaf (Cymbopogon nardus), galangal rhizome (Alpinia galanga), and sand galangal rhizome (Kaempferia galanga) through in vitro and in silico analyses and to identify the potential phytochemical compounds responsible for the activity. Citronella showed the highest TPC, TFC, and FRAP values (14.20±0.21 mg GAE/g, 17.36±9.51 mg QE/g, and 92.01±1.88 µmol TE/g, respectively), indicating strong antioxidant potential. Galangal exhibited the highest extraction yield (21.86±5.34%) and DPPH activity (1.09±0.27 µmol TE/g). In vitro lipase inhibition assays revealed galangal and sand galangal had moderate inhibitory effects (IC50= 401.2±18.24 and 374±11.24 µg/mL), while citronella showed weak activity. LC-MS/MS analysis of galangal identified eight compounds, including galangin, eugenol, and galanganol C. Molecular docking showed galangin had the strongest binding affinity (ΔG= -10.239 kcal/mol), interacting with catalytic residues Ser152 and His263 of pancreatic lipase via hydrophobic and electrostatic interactions. These findings suggest that citronella, galangal, and sand galangal possess potential as natural pancreatic lipase inhibitors, with galangal particularly galangin showing the most promising activity for obesity prevention and management.  
Inovasi Pangan Berbasis Tempe sebagai Upaya Pemberdayaan Masyarakat untuk Tumbuh Kembang Anak Menuju Indonesia Emas 2045 Kurniasih, Rini; Safithri, Mega; Ambarsari, Laksmi; Kurniatin, Popi Asri; Purwanto, Ukhradiya Magharaniq Safira; Andrianto, Dimas; Falah, Syamsul; Rosyidah, Rara Annisaur; Dwicesaria, Maheswari Alfira; Hudayanti, Martini; Lestari, Ayu; Rahman, Syabilla Aulia; Pratiwi, Anggita Aziz; Ambarsavitri, Rahmadhani
Qardhul Hasan: Media Pengabdian kepada Masyarakat Vol. 12 No. 1 (2026): Qardhul Hasan: Media Pengabdian kepada Masyarakat
Publisher : Universitas Djuanda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30997/qh.v12i1.22074

Abstract

Indonesia menghadapi tantangan besar dalam mewujudkan generasi yang sehat, cerdas, dan produktif menuju Indonesia Emas 2045, dengan prevalensi stunting nasional yang masih mencapai 19,8% pada tahun 2024. Peningkatan gizi sejak dini melalui pangan lokal bergizi tinggi seperti tempe, sebagai sumber protein nabati, merupakan solusi yang efektif. Program pemberdayaan masyarakat di Desa Cipalaha, Garut, melibatkan ibu dengan anak usia 0–5 tahun, ibu hamil, serta kader Posyandu dan PKK. Kegiatan meliputi penilaian status gizi anak, edukasi gizi dan stunting, pelatihan pembuatan nugget tempe dan sari kedelai, serta evaluasi melalui kuesioner orang tua, wawancara, dan uji organoleptik. Hasil menunjukkan 24% balita tergolong pendek atau sangat pendek, dan seluruh anak di atas lima tahun memiliki berat badan kurang, menandakan kekurangan energi kronis. Tingkat pendidikan, pekerjaan, dan pendapatan orang tua berpengaruh kuat terhadap risiko stunting. Program ini berhasil meningkatkan pengetahuan, keterampilan, dan motivasi peserta dalam memproduksi serta mengonsumsi olahan tempe bergizi tinggi dengan tingkat penerimaan yang baik. Temuan ini menegaskan pentingnya inovasi pangan lokal dan pemberdayaan masyarakat dalam mendukung pertumbuhan anak dan tujuan Indonesia Emas 2045.
Molecular Docking of Active Compound of Okra (Abelmoschus esculentus L.) on α-Glucosidase as Antidibetic Mellitus Drug Candidate Nuur'Alimah, Shobiroh; Ambarsari, Laksmi; Farhan, Muhammad
Jurnal Jamu Indonesia Vol. 11 No. 1 (2026): Jurnal Jamu Indonesia
Publisher : Tropical Biopharmaca Research Center, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jji.v11i1.360

Abstract

Diabetes mellitus (DM) is a leading cause of death among degenerative diseases, primarily due to impaired insulin function that disrupts carbohydrate metabolism. One therapeutic strategy involves α-glucosidase inhibitors that delay glucose absorption. Abelmoschus esculentus (okra) is rich in phenolic and flavonoid compounds with antihyperglycemic and antioxidant activity, suggesting potential as α-glucosidase inhibitors. This study evaluated the inhibitory potential of okra-derived compounds against α-glucosidase using in silico molecular docking with PLANTS and YASARA Structure. The analysis included physicochemical screening, ligand–receptor preparation, and docking simulations, assessing docking score, Gibbs free energy (ΔG), and dissociation constant (Kd). Cannabiscitrin, a flavonoid from okra, demonstrated the strongest binding affinity, outperforming the reference drug acarbose in all parameters. These findings suggest its potential as an alternative antidiabetic agent. 
Co-Authors -, Suryani . SURYANI A.E. Zainal Hasan Ade Heri Mulyati Adrian Adiva Aghnia, Diya Agnia Nurul Jannati Agung Isnanto Agustina L.N. Aminin Ahmad Irvan Pratama Ainia Hanifitri Aisyah Girindra Akbar, Nadhira Fathiaz Akhiruddin Maddu Akhmad Endang Zainal Hasan Alimah, Shobiroh Nuur Ambarsavitri, Rahmadhani ANINDA INDRIANI Anja Meryandini Annisa , Alifia Mutiara Annisa Dhiya Athiyyah Khanza Aqilah, Rifany Fairuz Aris Tri Wahyudi Arwansyah Arwansyah Aryani, Hanifah Asrul Muhamad Fuad, Asrul Muhamad Assifah Eryandini Asvarhoza, Genta AYU LESTARI Azhari, Muhammad Alwin Chelsea Chelsea, Chelsea Chelsy Narita Choirunnisa Miftahul Jannah Deki Geraldi Dewi Seswita Zilda Diana Widiastuti DIMAS ANDRIANTO Djarot Sasongko Hami Seno DWI NINGSIH SUSILOWATI DWI NINGSIH SUSILOWATI Dwi SUBIYARTI Dwicesaria, Maheswari Alfira Dwiningsih Susilowati Edy Djauhari Purwakusumah Edy Djauhari Purwakusumah Efi Sanfitri Harahap Elvaza, Azzara Putri Faliha Arinda Lestari Farhan Azhwin Maulana Fathin, Muhammad Faris Fatriani, Rizka Febrianti, Riska Febriyanto, Dimas G Jeni christi A GIA PERMASKU Giovanny, Lisa Gustini Syahbirin H. M. Mochtar Hamidah, Wanda Hanhan Dianhar Harahap, Efi Sanfitri HARTUTIK EKA SUSANTI Hasim - Hasim Hasim Hayati Minarsih Heri Purwoto Hidayat, Radika Evita Hudayanti, Martini Husnawati Husnawati Husnawati, . I MADE ARTIKA I Made Samudera I Made Samudera, I Made I MADE SAMUDRA Ifa Manzila Ifa Manzila Ika Yuni Astutik Ika Yuni Astutik, Ika Yuni Ike Wahyuni Putri Ilham Kurniawan Ilham Kurniawan Imelia Dewi Imron RIYADI Inayah, Mazidah Noer Inda Setyawati, Inda Irma Rahmayani Isnanto, Agung Jaya Hardi Kandi, Rizky Putra Kapitan, Origenes Boy Karichsa Hariana Komalasari, Nurma Angeliani Latifah K Darusman Lestari, Faliha Arinda Liliyani , Ni Putu Peggy Lisa Giovanny Made Suhandana Madyastuti, Rini Marfira, Nurul Mega Safithri Miantika, Shafillah Muhamad Rifai Muhamad Rifai Muhammad Alwin Azhari Muhammad Farhan Muhammad Faris Fathin Muhammad Halim, Muhammad Mustika Luthfia Mustika Permatasari Mustopa, Syahrul Nabila Nur Nafiati Natalia Marbun, Natalia NISA RACHMANIA MUBARIK Nur Qadri Rasyid Nurhidayat Nurhidayat Nurul Marfira Nuur'Alimah, Shobiroh Nuur’Alimah, Shobiroh Pratama, Ahmad Irvan Pratiwi, Anggita Aziz Purwantiningsih Sugita Purwanto, Ukhradiya Magharaniq Safira Purwatiningsih Sugita Puspa Julistia Puspita Putra, Adriansyah Nanda Putri, Ike Wahyuni Radika Evita Hidayah Rahayu, Dyah Utami Cahyaning Rahman, Syabilla Aulia Rasyid, Nur Qadri Ridho Pratama Rifany Fairuz Aqilah Riki Riki Riksa Nur Wahyuni Rini Kurniasih, Rini Rini Novita Riska Febrianti Rosyidah, Rara Annisaur Rury Eryna Putri Sanro Tachibana Sarmila, Sarmila Setyanto Tri Wahyudi Shobiroh Nuur' Alimah Shobiroh Nuur'Alimah Siti Nur'aeni Siti Nurjanah Siti Warnasih Slameut, Fitria Soekarno Mismana Putra Steffanus Gozales Suryani - Suryani Suryani Syamsul Falah TATI NURHAYATI Tirta Setiawan Tony Sumaryada Tri Puji Priyatno Tri Puji Priyatno Uswatun Hasanah Vino , Okta Wahyuni, Riksa Nur Waras Nurcholis Winarti, Novia Yadi Suryadi Yadi Suryadi Yudha, Trah Zahra Silmi Muscifa Zuniar Subastian