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All Journal Berkala Kedokteran Jurnal Kimia Riset Akta Kimia Indonesia Walisongo Journal of Chemistry FITOFARMAKA: Jurnal Ilmiah Farmasi Jurnal Crystal : Publikasi Penelitian Kimia dan Terapannya Jurnal Jejaring Matematika dan Sains Jurnal ABDINUS : Jurnal Pengabdian Nusantara BALANGA: Jurnal Pendidikan Teknologi dan Kejuruan Jurnal Pendidikan Fisika dan Sains (JPFS) Hydrogen: Jurnal Kependidikan Kimia Jurnal Ilmiah Berkala Sains dan Terapan Kimia Bohr: Jurnal Cendekia Kimia NAWASENA: Journal of Community Service
Lilis Rosmainar
Universitas Palangka Raya
Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Mathematics Medicine & Pharmacology Physics Public Health Other

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Pemurnian Asap Cair Hasil Torefaksi Cangkang Sawit dengan Cara Destilasi dan Filtrasi dengan Arang Aktif: Purification of Liquid Smoke from Torrefaction of Palm Oil by Distillation and Filtration with Activated Charcoal Karelius, Karelius; Rosmainar, Lilis; Novia Toemon, Angeline; Dirgantara, Made
Jurnal Jejaring Matematika dan Sains Vol. 2 No. 2 (2020): Edisi Desember 2020
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36873/jjms.2020.v2.i2.407

Abstract

The liquid smoke produced from the torrefaction process of oil palm shells has the potential to be used as an antiseptic base for hand sanitizer and disinfectant products. It is due to its high phenol and acetic acid content. Apart from phenol and acetic acid, there are many other compounds that must be separated in the hope of obtaining liquid smoke with the main components of acetic acid and phenol, which function as antibacterial agents. This research begins with the production of liquid smoke through a torrefaction process. The liquid smoke obtained is distilled at 150 oC and followed by adsorption with activated charcoal for the purification process. The pH value and acetic acid content in the purified liquid smoke were determined and analyzed using GC-MS to determine the chemical compounds. The pH value has decreased after the refining process by distillation, and activated charcoal is inversely proportional to the increase in acetic acid levels after purification. Based on GC-MS analysis results, it can be seen that the levels of acetic acid, phenol, propanoic acid, and 2-propanone increased after distillation. The loss of 1,2-Benzenediol and 2-Furancarboxaldechde compounds shows that distillation of liquid smoke at 150oC is effective for separating the heavy fraction of liquid smoke. Furthermore, the distilled liquid smoke is filtered using activated charcoal. The GC-MS analysis results showed that the filtration results with activated charcoal could increase acetic acid and propanoic acid levels in liquid smoke.
Perbandingan Plastik Dari Material-Material Bioplastik Rosmainar, Lilis; Niholan Tukan, Dominikus; Deviyanti, Mitha
Jurnal Jejaring Matematika dan Sains Vol. 3 No. 1 (2021): Vol. 3 No. 1 (2021): Edisi Juni 2021
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36873/jjms.2021.v3.i1.505

Abstract

Plastic is a polymer that has unique properties and is an extraordinary object. Polymers are materials consisting of molecules called monomers with homopolymer types. Polymers are commonly known in everyday life such as cellulose, protein, rubber, and other natural materials. The use of plastic is the impact of the development of the industrial world, technological and the increasing number of world population was increase. In Indonesian, the demand for plastic continues to increase with an average of 200 tons per year. In 2002 there were about 1,9 million tons of plastic waste, and in 2011 the amount of plastic waste increased to 2,6 million tons per year. Based on assumption of the Ministry of Environment (KLH), every day the Indonesian population can produce 0,8 kg of waste per person and if the total is 189 thousand tons of waste per day. 15% of waste produced is in the form of plastic waste or about 28,4 thousand tons per day. At first, natural polymer was used as materials for making tools and weapons. Monomers in the formation polymers are molecules that have double bonds or that have certain functional groups. Polymers are classified into natural polymers and synthetic polymers. Natural polymers such as cellulose, starch, chitin, chitosan, gelatin, dextran, alginate, pectin, guar gum and rubber are used in the manufacture of nanocomposites. Natural polymers exhibit properties such as purity, crystallinity, tensile strength, increase elasticity and have a large surface area. The conclusion is that the attractiveness of bioplastic has the same strength, but if it is added with other material, the conductivity will be stronger and better.
Study of the Effect of Domestic Wastewater from Jalan Lele Residents of Palangka Raya City on the Acidity and Alkalinity Levels of the Receiving Water Body: Studi Pengaruh Air Limbah Domestik Penduduk Jalan Lele Kota Palangka Raya terhadap Kadar Asiditas dan Alkalinitas Badan Air Penerima Manurung, Tety; Natalia, Nasa; Suma, Joy Angel Aria; Purba, Abed Nego; Naiya, Naiya; Hulu, Dominique F.S.; Rosmainar, Lilis; Hermayantiningsih, Dwi
Jurnal Jejaring Matematika dan Sains Vol. 5 No. 1 (2023): Jurnal Jejaring Matematika dan Sains
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36873/jjms.2023.v5.i1.805

Abstract

This research aims to determine the impact of domestik waste water disposal produced by residents living on Jalan Lele, Palangka Raya City, on the value of acidity and alkalinity levels in the receiving water body. The acidity level obtained was 24.098 mg/L and the alkalinity level was 254.410 mg/L. The acidity levels not comply to the Government Regulation Number 20 of 1990 levels and Government Regulation Number 82 of 2001 for standart water quality type B. Similarly for alkalinity levels doesn’t comply to World Heal Organization Regulation 2011 for irrigation water. Based on the results ​​of high levels of acidity and alkalinity in receiving water bodies, it encourages further research to be carried out for monitoring and handling domestik waste in residential areas in the city of Palangka Raya.
ESTERIFIKASI ASAM HUMAT GAMBUT KALIMANTAN TENGAH SEBAGAI ADSORBEN METHYLENE BLUE Simanjuntak, Elfrida Roulina; Rasidah, Rasidah; Rosmainar, Lilis
Akta Kimia Indonesia Vol 8, No 2 (2023)
Publisher : LPPM, Institut Teknologi Sepuluh Nopember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25493736.v7i2.16251

Abstract

Esterifikasi asam humat gambut Kalimantan Tengah sebagai adsorben methylene blue telah berhasil dilakukan dengan mereaksikan etanol dan katalis asam H2SO4. Proses pemisahan produk esterifikasi asam humat gambut Kalimantan Tengah dilakukan dengan metode ekstraksi pelarut menggunakan variasi perbandingan pelarut kloroform : air (1:1, 1:2, 1:4, 0:1). Dari hasil ekstraksi diperoleh bahwa esktraksi pelarut menggunakan kloroform : air 1:1  memberikan rendemen 99,86% (pH 5), 1:2  99,33 % (pH 7), 1:4 91,74% (pH 5), 0:1 99,47 (pH 7), asam humat 98,28% (pH%). Hasil karakterisasi asam humat esterifikasi menggunakan FTIR menunjukkan adanya serapan karakteristik gugus C=O dari –COOR pada daerah pita serapan 1089 cm-1 (1:1), 1100 cm-1 (1:2), 1104 cm-1 (1:4), 1059 cm-1 (0:1) yang mengindikasikan keberhasilan proses esterifikasi asam humat. Uji adsorpsi methylene blue dengan asam humat teresterifikasi dilakukan dengan variasi pH 1, 3, 5 dan 7. Hasil adsorpsi optimum diperoleh menggunakan rasio pelarut ekstraksi kloroform : air (1:1) dengan persen penyisihan 99,86% dan kapasitas adsorpsi maksimum sebesar 454,54 mg/g pada pH 5. Adsorpsi methylene blue menggunakan adsorben asam humat tereserifikasi terjadi secara fisisorpsi dengan nilai konstanta kesetimbangan sebesar 0,3666 L/mg yang mengikuti pola isoterm adsorpsi Langmuir mengasumsikan bahwa adsorpsi terjadi secara monolayer dimana hanya terdapat satu lapisan molekul pada permukaan adsorben yang diserap.Kata kunci: Asam Humat, methylene blue, esterifikasi
NUTRITION COUNSELING AND NUGGET PROCESSING TO PREVENT STUNTING IN TEWANG KARANGAN VILLAGE, KATINGAN Lilis Rosmainar; Nurhaliza
BALANGA: Jurnal Pendidikan Teknologi dan Kejuruan Vol. 11 No. 2 (2023): Journal Balanga Edisi Juli-Desember 2023
Publisher : Jurusan Pendidikan Teknologi dan Kejuruan, FKIP, Universitas Palangkaraya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37304/balanga.v11i2.11734

Abstract

Stunting is a condition of chronic malnutrition in children which can impact children's motor and verbal development as well as affect their cognitive development and productivity in adulthood. The prevalence of stunting in Indonesia in 2021 was 24.4%, while the prevalence rate of stunting in Central Kalimantan in 2021 was 27.4% and decreased in 2022 to 26.9%. There has been a decrease in the stunting prevalence rate of around 0.5%, but this reduction still needs to be improved so that there is an acceleration in the reduction in the stunting rate. The aim of carrying out this activity is to provide education regarding the dangers of stunting in children and efforts to prevent stunting through training in developing potentially nutritious food innovations to prevent stunting, so that it can accelerate the reduction in stunting rates and become a solution for local communities in improving their standard of living. The method used in this activity is a lecture using slide media and practice in making nutritious food for toddlers. The results of the outreach show that the community understands the dangers of stunting on children's growth and development and the community is able to innovate nutritious food for toddlers.
Formulation and Evaluation of Physical Quality of Peel-Oof Masks of Essential Oils of Galam Kalimantan Plants Ayuchecaria, Noverda; Karelius, Karelius; Rosmainar, Lilis; Aryzki, Saftia
Berkala Kedokteran Vol 20, No 1 (2024)
Publisher : Fakultas Kedokteran Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jbk.v20i1.18766

Abstract

The Kalimantan galam plant (Melaleuca cajuputi subsp cajuputi) has been used for generations but its use is very limited, only as wooden piles which form the basis of buildings in swamps (cerucuk), pillars for building construction, stakes (supports for newly planted seedlings) and siring. Street. The use of galam essential oil as an active ingredient in peel-off mask preparations can be efficacious in reducing inflammation and infection of acne or other skin problems. Facial masks in the form of peel-off itself have many advantages, namely their practical use and are easy to remove or lift like elastic membranes compared to conventional masks which leave residue. This study aims to design a peel-off mask formulation by utilizing the active ingredient in the essential oil of the galam plant. The preparations were then tested for physical quality requirements including organoleptic tests, homogeneity tests, pH tests, drying time tests, spreadability and adhesion tests. The results of the tests that have been carried out include the extraction of essential oils as the active substance. The yield of essential oil obtained was 0.12%. Organoleptic quality tests showed changes in color, smell and shape in the three formulations. The homogeneity test for formulas I and II remained homogeneous, while for formula III the consistency changed to 2 layers. The pH test showed that all formulations met the pH requirements for topical preparations, namely 4-8. The drying time test for formula I was more difficult to remove, formula II was not too stiff while formula III was stiffer. Spreadability test on formulas I, II and III 5-7 cm. The gel viscosity test decreased and the adhesion test on formulation I was easily released, formulas II and III were not easily released while the irritation test of 30 people did not experience redness in 3 formulas.
A Review: Optimum Conditions for Magnetite Synthesis (Fe3O4) Tukan, Dominikus Niholan; Rosmainar, Lilis; Kustomo, Kustomo; Rasidah, Rasidah
Jurnal Sains dan Terapan Kimia Vol 17, No 2 (2023)
Publisher : Program Studi Kimia, Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jstk.v17i2.15134

Abstract

Magnetite, chemically represented as Fe3O4, is an opaque substance characterized by its black coloration. It possesses a significant saturation magnetization value, denoting a substantial magnetic strength compared to alternative materials. Magnetite (Fe3O4) has significant use across several domains, including its deployment as a catalyst and sensor in the medical sector, such as drug delivery, hyperthermia therapy, and magnetic resonance imaging (MRI). The synthesis of magnetite (Fe3O4) can be achieved using several methodologies, such as solvothermal, sol-gel, solid state, reverse micelle, microwave plasma synthesis, freeze drying, ultrasound irradiation, hydrothermal, and coprecipitation techniques. The co-preparation technique is extensively employed for magnetite synthesis due to its simplicity, ease of usage, and ability to generate magnetic particles at the nanoscale scale without elevated temperatures. The outcome of the coprecipitation process is influenced by various factors such as the nature of the salt, molar ratio, pH level, stirring rate, and reaction temperature. This article aims to examine the impact of many factors, including the salt type, molar ratio, pH level, stirring rate, and reaction temperature, on the production of Magnetite (Fe3O4) through coprecipitation. It was found that Magnetite (Fe3O4) synthesis can produce nanoparticle size material with great magnetic power, namely at pH 8, temperature 70°C, and stirring rate of 10,000 rpm by using FeCl3 and FeCl2 as precursors Fe3+ and Fe2+ with a ratio of 1.5:1 and using precipitating base NH4OH.
Analysis of Ranitidine Hydrochloride Content in Drug X Samples Using A UV-Visible Spectrophotometry Rosmainar, Lilis; Yanwerico, Manuel
Hydrogen: Jurnal Kependidikan Kimia Vol 12, No 2 (2024): April-May 2024
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v12i2.11059

Abstract

The development and progress of modern society cannot be separated from the availability of health medicines. Conventional medicinal products such as capsules and tablets are formulated to release active compounds immediately after consumption. Tablets are solid drug dosage forms consisting of one or more medicinal ingredients. One type of solid drug dosage form is ranitidine hydrochloride. Ranitidine hydrochloride belongs to a class of antagonist drugs that attack histamine H receptors2 selectively and reversibly by reducing the process of secretion by gastric acid which is widely used for the treatment of stomach ulcers, intestinal ulcers (duodenum ulcers), Zollinger-Ellison syndrome, Gastro Esophageal Reflux Disease (GERD) and esophageal erosion. Determination of ranitidine hydrochloride levels was carried out using an ultraviolet spectrophotometer validation method with maximum absorption at a wavelength of ±314 nm. In UV spectrophotometer analysis, peaks were detected at wave number 313.80 nm with absorbance values of 0.425, 0.416, 0.421, 0.424, 0.413, and 0.418. The concentration results obtained for each sample were sample I 119.22%, sample II 116.70%, sample III 118.10%, sample IV 118.94%, sample V 115.85%, and sample VI 117.26% which fulfilled the requirements.
POTENSI AKTIVITAS SERAPAN UV PADA BERBAGAI PELARUT EKSTRAK KELAKAI MENGGUNAKAN SPEKTROFOTOMETRI UV-VIS Tesalonika, Lidya; Krissilvio, Eka Jhonatan; Al-Hadi, Risfa Aliya; Cahyani, Risfiah Ruli; Haq, Muhammad Hasanul; Rosmainar, Lilis
Jurnal Crystal : Publikasi Penelitian Kimia dan Terapannya Vol. 6 No. 2 (2024): Penelitian Kimia 2024
Publisher : Program Studi Kimia, Fakultas MIPA, Universitas PGRI Banyuwangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36526/jc.v6i2.3835

Abstract

Kelakai (Stenochlaena palustris) is a type of fern that is often found in the lowland swamps of Central Kalimantan, Indonesia. This research aims to determine the potential of kelakai leaf extract as a natural sunscreen by looking at absorption in the UV region using UV-Vis spectrophotometry. Kalakai extract is dissolved in various solvents, namely ethanol, n-hexane, acetone, ethyl acetate, and water). The absorbance of each solution was measured using a UV-Vis spectrophotometer in the wavelength range 200-400 nm. The UV spectrum shows that the ethanol and acetone extracts show strong absorption in the UV-A and UV-B regions, with absorbance peaks at 400 nm (467.549) and 380 nm (480.925). Water, ethyl acetate and n-hexane kalakai extracts showed good absorbance in the UV-C region, with absorbance peaks at 240 nm (636,406), 280 nm (582,943) and 260 nm (224,063), respectively. This research shows that kelakai leaf extract has the potential to be used as a natural sunscreen, with varying effectiveness depending on the solvent used. Kelakai (Stenochlaena palustris) merupakan salah satu jenis tumbuhan paku yang banyak terdapat di rawa-rawa dataran rendah Kalimantan Tengah, Indonesia. Penelitian ini bertujuan untuk mengetahui potensi ekstrak daun kelakai sebagai tabir surya alami dengan melihat serapan pada wilayah UV menggunakan spektrofotometri UV-Vis. Ekstrak kalakai dilarutkan dalam berbagai pelarut yaitu etanol, n-heksana, aseton, etil asetat, dan air). Absorbansi setiap larutan diukur menggunakan spektrofotometer UV-Vis pada rentang panjang gelombang 200-400 nm. Spektrum UV menunjukkan bahwa ekstrak etanol dan aseton menunjukkan serapan yang kuat di daerah UV-A dan UV-B, dengan puncak absorbansi pada 400 nm (467,549) dan 380 nm (480,925). Ekstrak air, etil asetat dan n-heksana kalakai menunjukkan serapan yang baik di daerah UV-C, dengan puncak absorbansi masing-masing pada 240 nm (636,406) , 280 nm (582,943) dan 260 nm (224,063). Penelitian ini menunjukkan bahwa ekstrak daun kelakai berpotensi untuk digunakan sebagai tabir surya alami, dengan efektivitas yang bervariasi tergantung pada pelarut yang digunakan.
Senyawa Minyak Atsiri dari Tumbuhan Galam (Melaluca sp) Lilis Rosmainar; Wahyu Nugroho; I Nyoman Sudyana; Noverda Ayuchecaria
Bohr: Jurnal Cendekia Kimia Vol 1 No 02 (2023): Bohr: Jurnal Cendekia Kimia Vol 01 No 02
Publisher : Program Studi Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Palangka Raya

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

Abstract

Salah satu tanaman penghasil minyak atsiri dari Kalimantan adalah Galam atau Gelam (Melaleuca cajuputi). Galam menghasilkan minyak atsiri yang sering disebut minyak kayu putih. Minyak kayu putih yang berasal dari jenis Melaleuca merupakan salah satu jenis minyak atsiri yang banyak digunakan untuk bahan berbagai produk kesehatan atau farmasi sehingga minyak kayu putih menjadi produk yang banyak dicari. Penenlitian ini bertujuan untuk mengisolasi minyak atsiri dari tanaman Galam dengan menggunakan destilasi sederhana dan mengindentifikasi senyawa mengguna Gas Cromatography-Mass Spectroscopy. Rendemen minyak atsiri yang dihasilkan sebanyak 0,027%. Senyawa yang terkandung adalah 1,8-Sineol (64,749 %), alpha terpineol (33,188 %), dan Di-(9-Octadecenoyl)-Glycerol (2,064 %). Berdasarkan SNI, standar kandungan sineol pada minyak atsiri daun galam telah sesuai dengan SNI yaitu sekitar 50-65%.
Co-Authors Adrian, Reno Akhmad Damsyik Al-Hadi, Risfa Aliya Alfanaar, Rokiy Andra Ari P., Eko Marwanto Heru Mulyantoro Dwi Hermayantiningsih Angeline Novia Toemon Aryzki, Saftia Ayuchecaria, Noverda Cahyani, Risfiah Ruli Carolius Angga, Stevin Deviyanti, Mitha Efendi Patar Sihombing, Midun Erwin Prasetya Toepak Haq, Muhammad Hasanul Haula Nanda Hulu, Dominique F.S. I Made Sadiana, I Made I Nyoman Sudyana I Nyoman Sudyana I Nyoman, Sudyana, Idam Sulastri Idam Sulastri Karelius Karelius Karelius - Karelius Karelius Karelius Karelius Karelius, Karelius Kevin Bryan Krissilvio, Eka Jhonatan Kustomo, Kustomo Made Dirgantara Manurung, Tety Marvin Horale Pasaribu Mitha Deviyanti Mokhamat Ariefin Muzaki Al Mukhtar, Abdullah Nababan, Yohana M. Naiya, Naiya Natalia, Nasa Neny Kurniawati Ni Putu Ayu Niholan Tukan, Dominikus Noverda Ayuchecaria Novia Toemon, Angeline Nurhaliza Nyahu Rumbang Nyahu Rumbang Purba, Abed Nego Rasidah Rasidah Rasidah Rasidah, Rasidah Revianti Coenraad Riandy Putra Septaria Yolan Kalalinggi Simanjuntak, Elfrida Roulina Stevin Carolius Angga Sudyana, I Nyoman Suma, Joy Angel Aria Tesalonika, Lidya Tety Wahyuningsih Manurung Tia Monika Tia Monika Tukan, Dominikus Niholan Uli Pakpahan, Ribka Vinsen Willi Wardhana Wahyu Nugroho Wahyu Nugroho Widia Ningsih Yanwerico, Manuel Yoricho Costapierro Sukoco Yuliana