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NOOR HUBDRYAWATI
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Jurnal Kimia Mulawarman
Published by Universitas Mulawarman
ISSN : 16935616     EISSN : 24769258     DOI : DOI: https://doi.org/10.30872/jkm
Core Subject : Science,
Chemistry
Journal of Kimia Mulawarman is a peer-reviewed, open access journal that publishes original research articles, review articles, as well as short communication in all areas of chemistry, including educational chemistry and applied chemistry.
Arjuna Subject : Kimia(semua kategori) - Kimia (Lain-Lain)
Articles 224 Documents
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Formulation And Physical Stability Test Of Mother-In-Law’s Tongue Leaves Extract Lotion As An Antioxidant Lela Mukmilah Yuningsih; Dikdik Mulyadi; Siti Inayah; Sita Sopatul Marwah
JURNAL KIMIA MULAWARMAN Vol 21 No 1 (2023)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jkm.v21i1.1235

Abstract

Mother-in-law's tongue leaves (Sansevieria trifasciata P.) is a plant of the genus Sansevieria with flavonoid compound namely trifasciatin, as an antioxidant. Antioxidants can be used in cosmetics to protect the skin from free radicals. The purpose of this research was to analyze antioxidant activity of mother-in-law's tongue leaves extract and to obtain the best lotion formulation with various concentrations. Samples were extracted using 96% ethanol solvent with maceration method. Antioxidant activity was tested using DPPH method and intensity was measured at λ=517 nm by UV-Vis spectrophotometer. The IC50 value=49.72 ppm indicates a very strong antioxidant activity, compared to vitamin C=4.01 ppm (very strong). Extract was formulated in lotion with various concentrations of 0.5%, 1%, 3%, 6% and the comparison was vitamin C with same concentration as well as base without the addition of active substances. Based on observations for 4 weeks, 3% extract lotion is the best formulation. The organoleptic test results showed no change in shape, texture, color, odor, and pH so lotion was stable. In addition, the value of viscosity, spreadability, adhesion, irritation test according to established standards also has an antioxidant value 99.72% (strong category). So effective to ward off free radicals on the skin.
Uji Aktivitas Antihiperurisemia Ekstrak Etanol Daun Sirsak (Annona muricata L) dan Analisis Komposisi Senyawa Yang Terkandung Putri Faizah A; Daniel Daniel; Saibun Sitorus; Agustina Rahayu Magdalena
JURNAL KIMIA MULAWARMAN Vol 21 No 2 (2024)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jkm.v21i2.1107

Abstract

Penelitian mengenai uji aktivitas antihiperurisemia ekstrak etanol daun sirsak (Annona muricata L.) dan analisis komposisi senyawa yang terkandung telah selesai dilakukan. Metode yang digunakan adalah metode in vitro menggunakan spektrofotometer UV-Vis dan GC-MS. Kontrol positif yang digunakan adalah allopurinol. Berdasarkan hasil uji fitokimia diketahui bahwa ekstrak kasar etanol mengandung metabolit sekunder alkaloid, tannin dan saponin. Aktivitas enzim xantin oksidase pada residu sebesar 0,0004 U/mL dan supernatan sebesar 0,00009 U/mL. Berdasarkan aktivitas xantin oksidase terhadap ekstrak kasar etanol daun sirsak (Annona muricata L.) pada konsentrasi 0,00007 diperoleh daya inhibisi 82,5%. Berdasarkan hasil uji dengan alat GC-MS dari ekstrak etanol pada hasil uji aktivitas antihiperurisemia paling baik diperoleh 22 komponen senyawa, diantaranya terdapat 2 senyawa yang dominan yaitu Acid mono (2-ethylhexyl) ester sebesar 16,70% dan vitamin E sebesar 13,50%. Ekstrak kasar etanol daun sirsak (Annona muricata L.) memiliki potensi sebagai antihiperurisemia.
CHARACTERISATION OF ACTIVATED CARBON FROM WHITE SNAPPER SCALES (Lates calcarife) WASTE Jolantje Latupeirissa; Matheis F. J. D. P. Tanasale; Eirene G. Fransina; Semuel Simra Pada; Muliana Muliana
JURNAL KIMIA MULAWARMAN Vol 21 No 2 (2024)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jkm.v21i2.1292

Abstract

ABSTRACT Research on the characterisation of activated carbon of white snapper (Lates calcarifer) scales waste, obtained through carbonisation process, fish scales were put in a furnace at 350 oC for 2 hours. Then cooled and sieved with a 100 mesh sieve, characterised by XRD, resulting in three peaks with the strongest intensity at 2θ regions of 26.45o, 32.69o, and 33.60o respectively. The surface acidity of carbon solids before and after activation were (4.48x10-3 and 7.77x10-3) mol/g, respectively. The activation process of white snapper scales (Lates calcarifer), increases the surface area of carbon can react with other chemicals. Subsequently, it was calcined at 450 oC under vacuum conditions for 2 hours with N2 gas, and characterised by XRD. The results showed a shift in 2θ peaks of 26.52o, 29.66o, and 32.77o, respectively. The carbon was activated by soaking with 3 M KOH activator for 15 hours, washed with distilled water, and dried in an oven at 110°C for 1 hour, characterised by XRD, and the peaks with the strongest intensity were obtained at 26.22°C, 29.12°C, and 32.43°C, with increasing basal spacing. Keywords: activated carbon, white snapper scales, XRD
Active Compounds of Sembung Leaves (Blumea balsamifera DC) in Silico Screening as Antihypertensives Ahmad Sjahriza; Fyrda Shellia; Dyah Iswantini
JURNAL KIMIA MULAWARMAN Vol 21 No 1 (2023)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jkm.v21i1.1263

Abstract

Hypertension is a structural or functional change in the arteries or the organs it supplies caused by increased blood pressure. Angiotensin-converting enzyme (ACE) can increase blood pressure by converting inactive angiotensin I to active (angiotensin II). Captopril is a hypertension drug that can inhibit ACE activity. Sembung leaf (Blumea balsamifera DC) is a plant that can potentially have antihypertensive activity. This study aims to identify the interaction of active compounds in sembung leaves against ACE as antihypertensive drug candidates through an in silico test based on pharmacodynamic and pharmacokinetic parameters using two docking software, Autodock Vina and PyRx. The results showed that Luteolin was the best test ligand besides having lower ΔG and Ki than control ligands and higher Kd than control ligands. Luteolin was identified to interact with Zn and hydrogen bond interactions at the active site and met the criteria in Lipinski analysis, ADME, and toxicity, so this compound is relatively safe to be used as a drug candidate for the treatment of hypertension.
Effect of Eggshell Ca-Alginate on pH, TSS, and TDS of Peat Water Gusti Gusti; Elliska Murni Harfinda; Dahlia Wulan Sari; Rachmat Sahputra; Tia Nuraya
JURNAL KIMIA MULAWARMAN Vol 21 No 2 (2024)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jkm.v21i2.1206

Abstract

Air gambut memiliki pH rendah, kandungan logam berat yang tinggi, TSS dan TDS yang tinggi sehingga memerlukan pengolahan sebelum digunakan sebagai sumber air untuk budidaya perikanan. Tujuan penelitian ini untuk mengetahui pengaruh cangkang telur, Ca-alginat, dan Ca-alginat cangkang telur terhadap pH, TSS, serta TDS air gambut. Cangkang telur ayam diketahui mengandung CaCO3 yang bisa digunakan untuk pengolahan air gambut. Namun, penggunaan serbuk cangkang telur memiliki keterbatasan dalam memisahkan adsorben dan adsorbatnya jika digunakan sebagai adsorben. Enkapsulasi cangkang telur menggunakan Ca-alginat dapat mengatasi keterbatasan tersebut. Metode penelitian ini menggunakan metode adsorpsi. Hasil penelitian menunjukkan peningkatan pH air gambut dari 4,3 menjadi 6,5, 6,7, dan 6,6 masing-masing untuk adsorben cangkang telur, Ca-alginat, dan Ca-alginat cangkang telur. TSS pada air gambut juga mengalami peningkatan dari 20,5 mg/L menjadi 39 mg/L, 34,5 mg/L, dan 32 mg/L masing-masing untuk adsorben cangkang telur, Ca-alginat, dan Ca-alginat cangkang telur. Peningkatan juga terjadi pada TDS air gambut dari 36,5 mg/L menjadi 94 mg/L, 45 mg/L, dan 42 mg/L masing-masing untuk adsorben cangkang telur, Ca-alginat, dan Ca-alginat cangkang telur. Penggunaan adsorben Ca-alginat cangkang telur meningkatkan nilai pH, TSS, dan TDS air gambut yang masih sesuai dengan baku mutu air kelas tiga berdasarkan PP RI Nomor 22 Tahun 2021.
Determination of Total Antioxidant and Phenolic Content from Malvaceae Family Leaves Infusion by Spectrophotometry Yefrida Yefrida; Silvia Detri Susanti; Refilda Refilda
JURNAL KIMIA MULAWARMAN Vol 21 No 1 (2023)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jkm.v21i1.1007

Abstract

The use of plants as a source of medicine has been increasing lately. The plants used generally have bioactivities such as anti-bacterial, antioxidant, and others. Plants that contain antioxidants are widely used because of their ability to capture free radicals so that they can protect the body from various diseases. One of the plants that is often used is plants from the Malvaceae family. In this study, the antioxidant and total phenolic contents of five types of plants were determined. These plants were extracted by infundation method and analyzed using MPM (Modified Phenanthroline Method) and Folin-Ciocalteu methods. The highest antioxidant and total phenolic contents were found in kapok randu and waru leaves.
MINYAK ATSIRI DAUN SIRIH HIJAU (PIPER BETLE L.) DAN DAUN SIRIH MERAH (PIPER CROCATUM RULZ AND PAV) : TINJAUAN KOMPREHENSIF TENTANG KOMPONEN, STRUKTUR KOMPONEN, HIBRIDISASI, ADISI, AKTIVITAS BIOLOGIS DAN MANFAATNYA Nenohai, Jacky Anggara; Rosyida, Ima; Putri, Isma Yanti Vitarisma Sukirno; Agustina, Nur Indah; Marfu'ah, Siti
JURNAL KIMIA MULAWARMAN Vol 22 No 1 (2024)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jkm.v22i1.1262

Abstract

Essential oil is an aroma-giving liquid that comes from plant parts such as roots, stem bark, fruit, leaves, seeds, flowers or other parts taken through distillation methods and extraction methods using organic solvents or pressed and enzymatically. Essential oils in each plant have different components and characteristics. One of the plants that can be utilized and has essential oil content is green betel leaves (Piper betle L.) and red betel leaves (Piper crocatum Ruiz and Pav). Several studies have been conducted to identify the content of betel leaves. The largest content present in green betel leaves is limonene, while the largest content of red betel leaves is sabinena which has a special structure. These red and green betel leaves, have many characteristics, and benefits. The method used in this writing uses a descriptive literature review, with the aim of this study is to compile a comprehensive literature analysis of the components, structure, hybridization, isomerization, addition reactions and biological activity of betel leaves covering some information based on the results of literature studies.
Potential of Cow Bone as a Basic Material for Hydroxyapatite-High Density Polyethylene Composites (HAp-HDPE) Ramadani, Kurnia; Rismawati, Rismawati; Ismail, Ismail; Andriani, Titik
JURNAL KIMIA MULAWARMAN Vol 22 No 1 (2024)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jkm.v22i1.1363

Abstract

Cow bone has the potential to be used as a basic ingredient in the synthesis of hydroyapatite because it contains calcium. The addition of High Density Polyethylene (HDPE) to hydroyapatite aims to produce biocomposites that have better properties compared to the previous properties. The purpose of this study is to determine the characteristics of biocomposites with the HDPE:HAp in the ratio of 1: 2, 2: 1 and 3: 2 (%w / w). The method used is the sol-gel method and characterized by FTIR to see the bonding of functional groups and electron microscope to see the morphology of biocomposites. The biocomposites that have the best mechanical properties in this study are biocomposites with a ratio (HDPE: HAp) of 3: 2 with compressive and tensile strength values of 0.66 and 0.1290 N / mm2, density and water absorption values of 0.505 g / cm3 and 6,828% respectively and heat resistance with a temperature of 110 ° C experiencing a mass decrease of 0,675 g.
ANALISIS KADAR NITROGEN (N) TOTAL DAN BESI (Fe) PADA PENAMBAHAN BIOAKTIVATOR EM4 TERHADAP KOMPOS (SAMPAH KACANG PANJANG-KULIT KACANG KEDELAI) Cahyani, Amelya Putri; Sitorus, Saibun; Pratiwi, Djihan Ryn
JURNAL KIMIA MULAWARMAN Vol 22 No 1 (2024)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jkm.v22i1.1111

Abstract

Pengomposan merupakan proses penguraian bahan organik sampah dibawah kondisi-kondisi terkontrol oleh adanya aktivitas mikroorganisme pengurai. Proses pengomposan dilakukan dengan penambahan Effective microorgarnism 4 (EM4). Tahapan penelitian meliputi uji pengaruh waktu pengomposan terhadap suhu dan pH; penentuan variasi optimum bioaktivator EM4 terhadap kadar N-Total dan Fe serta waktu optimum pengomposan berdasarkan kondisi suhu, pH dan warna. Variasi optimum EM4 berdasarkan kadar N-Total pada variasi tanpa penambahan EM4 sebesar 0,4731% dan berdasarkan kadar Fe pada variasi EM4 20 mL sebesar 0,805%. Waktu optimum pengomposan berada pada hari ke-16 dengan pH 7,19-7,50; suhu sebesar 27-28,3°C dan memiliki warna hitam.
VERIFIKASI METODE PENENTUAN SULFUR DIOKSIDA (SO2) PADA SAMPEL UDARA AMBIEN DENGAN METODE PARAROSANILIN MENGGUNAKAN SPEKTROFOTOMETER UV-VISIBELE Anwar, Adliah; Pasaribu, Subur P.; Panggabean, Aman Sentosa
JURNAL KIMIA MULAWARMAN Vol 22 No 1 (2024)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/jkm.v22i1.1119

Abstract

The research about verification method on determination of sulfur dioxide (SO2) on ambient air samples with the pararosaniline method using UV-Vis Spectrophotometer has been done. To obtain a valid measuring result, some important parameters of measurement on sulfur dioxide (SO2) in ambient air samples based on SNI 7119-7:2017. The results showed that the linearity of the measurement was very good as indicated by the correlation coefficient value was 0.9998. The limit of detection and limit of quantization was 2.7766 g/Nm3 and 7.4111 g/Nm3 respectively. The value of precision was good shown by %RSD < 2/3 CV Horwitz, and the accuracy of this method was good shown by a recovery percentage of 101.12%. Based on the results of this research, the pararosanilin method can be used to analyze sulfur dioxide (SO2) in ambient air samples with good results.

Page 22 of 23 | Total Record : 224

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