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All Journal Jurnal Periodic Jurusan Kimia UNP Jurnal Farmasi Medica (Pharmacy Medical Journal) PMJ Walisongo Journal of Chemistry Eksakta : Berkala Ilmiah Bidang MIPA Jurnal Farmamedika (Pharmamedica Journal) Pelita Eksakta Medfarm: Jurnal Farmasi dan Kesehatan Hydrogen: Jurnal Kependidikan Kimia CHEDS: Journal of Chemistry, Education, and Science MASALIQ: Jurnal Pendidikan dan Sains
Riga, Riga
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Religion Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Education Energy Engineering Environmental Science Immunology & microbiology Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Physics Public Health Social Sciences Other

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Antibacterial Effectiveness of BS Endophyte Mushroom Extract on Media Growing Red Rice Iryani, Iryani; Pramesti, Radia Sagita; Riga, Riga; Ulfah, Mariam
Walisongo Journal of Chemistry Vol 6, No 1 (2023): Walisongo Journal of Chemistry
Publisher : Department of Chemistry Faculty of Science and Technology Walisongo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21580/wjc.v6i1.13241

Abstract

BS endophytic Fungi is a Fungi isolated from the flower of the bitter plant (A. Paniculata) which is known to produce various secondary metabolites which are reported to have antibacterial bioactivity. This study aimed to determine the antibacterial activity of extract from endophytic Fungi BS isolated from bitter flower (A. Paniculata) on brown rice growing media against Streptococcus mutans, Staphylococcus aureus, and Pseudomonas aeruginosa bacteria. The method used is endophytic Fungi BS grown on media extracted by maceration method with solvent. The antibacterial activity test of the extract was carried out by disc diffusion method. The results obtained showed that the extract of the endophytic Fungi BS grown on brown rice media gave activity to inhibit the growth of Streptococcus mutans, Staphylococcus aureus, and Pseudomonas aeruginosa bacteria at concentrations of 10%, 30%, and 50%. In conclusion, the extract of BS endophytic Fungi isolated from A. paniculata flowers has potential as an antibacterial
Optimasi Adsorpsi Ion Cd2+ Pada Silika Gel – GPTMS (glisidoksilpropoltrimetoksisilan) Termodifikasi Sulfonat Pebriani, Pebriani; Oktavia, Budhi; Nasra, Edi; Riga, Riga
Periodic Vol 13, No 1 (2024): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/periodic.v13i1.124279

Abstract

Adsorbents that are often used in the adsorption process are silica gels. Silica gel has unique advantages such as being, having ion exchange ability, being stable at high temperatures, not floating on organic solvents, and being easy to modify. But the effectiveness of silica gel adsorption against metal ions is weak, so it needs to be modified on the surface of silica gel. The modifier used is a sulfonate group derived from a 4-amino-5-hydroxy-2,7-naphthalenedisulfonate salt using a glycosidoxypropyltrimethoxysilane linkage (GPTMS). The purpose of this study is to determine the optimum conditions for the Cd2+ ion with variations in pH and contact time. The results of the study obtained optimal conditions for the absorption of the Cd2+ ion at pH 5 and a contact time of 60 minutes.
Pengaruh Massa dan Waktu Kontak Terhadap Penyerapan Ion Logam Pb2+ Menggunakan Xerogel dari Abu Kulit Durian (Durio zibethinus Murr.) Putri, Sinta Eka; Nasra, Edi; Sanjaya, Hary; Riga, Riga
Periodic Vol 13, No 1 (2024): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/periodic.v13i1.124373

Abstract

Lead metal is one of the hazardous metals produced from industrial activities in Indonesia and can pollute the environment. The maximum level of Pb2+ ions in waters is 0.03 mg/L. If the Pb2+ ion level exceeds the predetermined level, it will have a harmful effect on the environment and living things. Adsorption is a method that can be used to reduce lead metal levels in water. The adsorbent that can be used is xerogel, which produced from durian peel (Durio zibethinus Murr.). The purpose of this study is to determine the optimum conditions of absorption and determine the absorption capacity of xerogel from durian peel against Pb metal. In this study, the batch method was used for the adsorption process by varying contact time and adsorbent contact mass. The results of this study obtained the absorption capacity under the optimum conditions of contact time of 60 minutes, and an adsorbent mass of 0.2 grams of 6.04 mg/g.
Uji Antioksidan Fungi Endofitik BS-1 yang Berasosiasi Dengan Bunga Sambiloto (Andrographis Paniculata) Dengan Beras Hitam Sebagai Media Pertumbuhan Hayuni, Sri; Riga, Riga; Nasra, Edi
Periodic Vol 13, No 1 (2024): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/periodic.v13i1.123226

Abstract

Sambiloto (Andrographis paniculata) is a popular medicinal plant from the Acanthaceae family and andrographolide was the main secondary metabolite with various biological activites including antioxidant. A. paniculata is one of the medicinal plants reported as potential host for endophytic fungi. This study aims to determine the potential of endophytic fungi associated with A. paniculata flower tissue as a source of antioxidant compounds. An isolate from the flowers of A. paniculata was coded as BS-1. Macroscopic observation of BS-1 fungi showed a white mushroom colony with a round shape in the middle and a slightly rough surface. Crude extract of endophytic fungi BS-1 showed the presence of phenolic compounds, terpenoid, steroids, and alkaloids. The antioxidant activity of fungal BS-1 expressed as IC50 and categorized as moderate, with IC50 results in the range of 101-250 ppm.
Biosorpsi Ion Logam Cd(II) Menggunakan Ekstrak Selulosa Kulit Durian (Durio zibethinus Murr) Fitria, Fadhila; Nasra, Edi; Sanjaya, Hary; Riga, Riga
Periodic Vol 13, No 1 (2024): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/periodic.v13i1.124433

Abstract

Heavy metals are produced from various industries whose existence is very dangerous for the environment and human life. Cadmium is an example of a heavy metal that is dangerous and meeds to be addresses. Biosorption is one method that can be used to absorb heavy metal. The purpose of this study was to determine the optimum conditions of ansorption and ansorption capacity of durian shell cellulose the absorption of Cd metal. In this study using a batch method and the test is measured using the Atomic Absorption Spectrophotometer (AAS) instrument and characterized by FTIR. In this study the parameters tested were variations in pH (2, 3, 4, 5, 6) and concentration (50, 100, 150, 200, 250) ppm. The optimum conditions obtained in each variation were pH 4, concentration 200 ppm and contact time with a maximum adsorption capacity of 4,1 mg/g. The modeling of the isotherm that is close to equilibrium is the Langmuir isotherm with R2= 0,9499.
Pengaruh Variasi Ukuran Lebar Material Terhadap Karakteristik Termoelektrik Sistem C/CuO Wulandari, Yolanda; Putra, Ananda; Nizar, Umar Kalmar; Riga, Riga
Periodic Vol 13, No 3 (2024): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/periodic.v13i3.125757

Abstract

One of the factors that can affect the quality and characteristics of thermoelectric materials is the size of the material.. This study aims to determine how the effect of material size is varied in width and thickness. The material used is activated carbon obtained from previous research that has met the SNI No. 06-3720-1995 content test. The activated carbon is then composited with Copper (II) Oxide. Based on the tests that have been carried out, the best material obtained is the material with a width size variation of 1 cm. With a high electrical conductivity value of 0.0909 MΩ-.cm-, low thermal conductivity of 0.2418 J/s and has a high Seebeck coefficient of 0.0166 mV/K. Thermoelectricity offers sustainable energy to maintain energy needs, namely by converting wasted heat energy into electrical energy that can overcome the current global warming problem.
Sintesis dan Karakterisasi Silika Berpori dari Natrium Silikat dan Gelatin dari Kulit Ikan Lele Clarias gariepinus sebagai Surfaktan Zahran, Jihan Fadhilah; Aini, Syamsi; Riga, Riga; Suryani, Okta
Periodic Vol 13, No 3 (2024): PERIODIC
Publisher : Departemen Kimia FMIPA UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/periodic.v13i3.125705

Abstract

Previous research result on porous silics have obtained fine silica precipitate with a purity of 70,6% and a partticle size of 300-1000 nm. As the application of porous silica increases, research is also developing, one example is mesoporous silica. Mesoporous silica can be used in various fields such as catalysts, drug delivery, adsorption, chromatography and others. This research was conducted to synthesize silica with catfish skin gelatin surfactant. Gelatin was characterized by FTIR to see the functional groups that make up gelatin. The resulting silica was characterized using XRD to determine the crystal structure and SEM to determine the morphology of the silica. The results of the FTIR test on catfish skin gelatin showed 4 absorption areas, namely Amide A, Amide I, Amide II and Amide III. Silica characterization using XRD shows crystalline crystals. Meanwhile, SEM characterization shows regular morphology. SL4% has the highest crystallinity and branched tube shape morphology.
Kajian Fitokimia Ekstrak Metanol Daun Belimbing Wuluh (Averrhoa bilimbi L.) Asal Kecamatan Koto Tangah Serli, Salsabilla Putri; Riga, Riga; Nasra, Edi
MASALIQ Vol 4 No 5 (2024): SEPTEMBER
Publisher : Lembaga Yasin AlSys

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58578/masaliq.v4i5.3447

Abstract

Secondary metabolites are compounds synthesized by plants, microbes, or animals through biosynthesis that are used to support life. The content of secondary metabolites in plants is often used as traditional medicine. In this research, samples of wuluh starfruit leaves (Averrhoa blimbi L.) were used as traditional medicine to treat coughs, diabetes, and others. The purpose of this study is to determine the secondary metabolite content in wuluh starfruit leaves (A. Blimbi L.) in Koto Tengah district through maceration, phytochemical, and thin layer chromatography methods. This research was carried out through a sample preparation process, maceration using methanol as a solvent, phytochemical tests to test the content of alkaloids, flavonoids, saponins, and polyphenols/tannins by looking at the color change in the sample, and confirmation through thin layer chromatography by looking at the color and Rf value. The secondary metabolite test revealed that belimbing wuluh leaves were positive for tannins, flavonoids, alkaloids, and saponins.
UJI ANTIOKSIDAN JAMUR ENDOFITIK BJS-3 YANG BERASOSIASI DENGAN BIJI SAMBILOTO (Andrographis paniculata) MENGGUNAKAN METODE DPPH (2,2-Difenil-1-Pikrilhirazil) PADA MEDIA PERTUMBUHAN KACANG HIJAU Yusnita, Rani; Oktria, Wandi; Silvani, Mauline Adia; Riga, Riga
Jurnal Farmasi Medica/Pharmacy Medical Journal (PMJ) Vol. 7 No. 2 (2024): Jurnal Farmasi Medica/Pharmacy Medical Journal
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35799/pmj.v7i2.55890

Abstract

Sambiloto (Andrographis paniculata) adalah salah satu tanaman yang tergolong dalam famili Acanthaceae. A. paniculata dilaporkan mengandung metabolit sekunder yang memiliki aktivitas antioksidan dan efektif dalam menetralisir radikal bebas. Tujuan penelitian ini adalah untuk menganalisis uji skrining fitokimia dan menguji aktivitas antioksidan (IC50) jamur endofitik BJS-3 yang berkolonisasi dalam biji sambiloto. Uji analisis fitokimia mengindikasikan ekstrak etil asetat (EtOAc) jamur endofitik BJS-3 positif mengandung senyawa alkaloid, steroid, terpenoid, dan fenolik. Hasil uji antioksidan yang diperoleh menunjukkan adanya kemampuan aktivitas antioksidan tinggi dengan nilai IC50 = 70,82 ppm. Menariknya, aktivitas antioksidan jamur BJS-3 pada media pertumbuhan kacang hijau pertama kali dilakukan pada penelitian ini.
ANALISIS AKTIVITAS ANTIOKSIDAN JAMUR ENDOFITIK DDP YANG BERKOLONISASI DENGAN DAUN DEWA (GYNURA SEGETUM) DENGAN METODE DPPH (2,2-DEFENIL-1-PIKRILHIRAZIL) Nur Meisinca, Dzulhijjah; Riga, Riga; Adia Silvani, Mauline; Oktria, Wandi; Nasra, Edi; Kurniawati, Desi; Oktavia Dewita, Febby; Dwi Rahma Doni, Deani; Khairiyah, Ghina
Jurnal Farmamedika (Pharmamedika Journal) Vol 9 No 2 (2024): Jurnal Farmamedika (Pharmamedica Journal)
Publisher : Sekolah Tinggi Teknologi Industri dan Farmasi Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47219/ath.v9i2.371

Abstract

Daun dewa (Gynura segetum) tergolong ke dalam famili Asteraceae dan juga termasuk sebagai tanaman obat untuk mengatasi berbagai penyakit. Daun dewa menghasilkan senyawa aktif yang memiliki bioakivitas, salah satunya bersifat antioksidan. Senyawa antioksidan dari tumbuhan ini dapat dieksplorasi lebih lanjut melalui jamur endofitik. Tujuan dari penelitian ini yaitu untuk menganalis metabolit sekunder dan menguji aktivitas antioksidan dari jamur endotifik DDP yang berkolonisasi dengan daun dewa menggunakan media nasi sebagai media pertumbuhan. Hasil analisis fitokimia membuktikan bahwa ekstrak etil asetat (EtOAc) jamur endofitik DDP menunjukkan hasil positif terpenoid dan alkaloid. Analisis aktivitas antioksidan menggunakan metode DPPH (2,2-Defenil-1-Pikrilhirazil) juga dilakukan pada studi ini. Nilai IC50 yang diperoleh yaitu 77,83 ppm yang menunjukkan ekstrak jamur endofitik DDP memiliki aktivitas antioksidan yang kuat.
Co-Authors Adia Silvani, Mauline Agustini, Dewi Meliati Ahadul Putra Aini, Syamsi Anshar Al Khairi, Varel Boni Saputra Budhi Oktavia Desi Kurniawati Dewita, Febby Oktavia Dwi Rahma Doni, Deani Edi Nasra Fitri, Bali Yana Fitria, Fadhila Hary Sanjaya Hayuni, Sri Hidayanti, Ermia Iryani Iryani Jayawarsa, A.A. Ketut Khairiyah, Ghina Mulia, Melindra Nizar, Umar Kalmar Nofri Yuhelman Nur Meisinca, Dzulhijjah Oktavia Dewita, Febby Oktria, Wandi Pebriani Pebriani Pramesti, Radia Sagita Putra, Ananda Putri, Sinta Eka Rahmad, Nafisah Yulia Romy Dwipa Yamesa Away Sari, Trisna Kumala Serli, Salsabilla Putri Silvani, Mauline Adia Siti Aisyah Sri Benti Etika Suryani, Okta Suryelita, Suryelita Syolendra, Dwi Finna Ulfah, Mariam Velly, Aglin Wulandari, Yolanda Yusnita, Rani Zahran, Jihan Fadhilah Zubir, Moondra