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All Journal EKSAKTA: Journal of Sciences and Data Analysis Jurnal Ilmiah Pertanian Indonesian Journal of Chemistry and Environment IJCR (Indonesian Journal of Chemical Research) Indonesian Journal of Chemistry and Environment Jurnal Akademik Pengabdian Masyarakat Jurnal Inovasi Penelitian Ilmu Pendidikan Indonesia Kimia Padjadjaran
Salmahaminati Salmahaminati, Salmahaminati
Chemistry Department, Faculty Of Mathematics And Natural Sciences, Islamic University Of Indonesia
Religion Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Social Sciences Other

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Synthesis of Chitosan Sulfate From Crab (Scylla serrata) and its application as adsorbent Salmahaminati, Salmahaminati
Indonesian Journal of Chemistry and Environment Vol 3, No 1 (2020): JUNE 2020
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/ijce.v3i1.40819

Abstract

Synthesis of chitosan sulfate from crab (Scylla Serrata) shell and its application as Remazol Yellow FG dye adsorbent has been studied. This experiment was conducted to study the effectiveness of chitin from crab shell to be converted into chitosan sulfate and to study the adsorption of chitosan sulfate by Remazol Yellow FG dye.  Isolation of chitin from crab shell was done by deproteination and demineralization process. Chitin had been converted into chitosan using demineralization process. Chitosan sulfate was made by reacting chitosan with 1 M ammonium sulfate solution. Characterizations of the chitosan are involving determination of degree of deacetylation. Functional group of chitin, chitosan and chitosan sulfate were determined by FTIR spectroscopy. The dye adsorption of chitosan sulfate was analyzed with UV-Vis spectroscopy. The result showed that rendement of chitin, chitosan and chitosan sulphate were 28.57%, 52.5% and 92%. The degree of deacetilation of chitin and chitosan were 80 – 90% and 70 – 80%. Remazol Yellow FG was adsopr 76.5%.
Semiempirical Study On Electronical Transition Spectra Of Ethyl Pmethoxycinnamate (EPMS) From Kencur (Kaempferia Galanga) For Sunscreen Component Salmahaminati Salmahaminati; Mokhammad Fajar Pradipta
EKSAKTA: Journal of Sciences and Data Analysis VOLUME 15, ISSUE 1-2, 2015
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/eksakta.vol15.iss1-2.art4

Abstract

Telah dilakukan analisis in silico senyawa tabir surya Etil Para Metoksi Sinamat (EPMS) berdasarkan data transisi elektronik molekul senyawa yang bertujuan untuk memperkirakan EPMS sebagai senyawa tabir surya perisai alami UV-B. Kajian dilakukan dengan membuat model molekul senyawa tabir surya standar Isopropil Para Metoksi Sinamat (IPMS) yang dioptimasi geometri menggunakan metode semiempirik AM1 dan dilanjutkan optimasi analisis spektra transisi elektronik dengan metode ZINDO/S, ZINDO 1, PM3, dan AM1. Analisis spektra transisi elektronik difokuskan pada UV-B (290-315 nm). Hasil kajian secara umum menunjukkan analisis spekta transisi elektronik terbaik adalah ZINDO/s. Perhitungan dengan metode ZINDO/S pada IPMS menunjukkan λmax yaitu 290,77 nm dan senyawa EPMS diperoleh nilai λmax 292,41 nm. Hasil ini menunjukkan bahwa EPMS dapat dimanfaatkan sebagai perisai alami UV-B.
Synthesis of Chitosan Sulfate From Crab (Scylla serrata) and its application as adsorbent Salmahaminati Salmahaminati
Indonesian Journal of Chemistry and Environment Vol 3, No 1 (2020): JUNE 2020
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (413.404 KB) | DOI: 10.21831/ijce.v3i1.40819

Abstract

Synthesis of chitosan sulfate from crab (Scylla Serrata) shell and its application as Remazol Yellow FG dye adsorbent has been studied. This experiment was conducted to study the effectiveness of chitin from crab shell to be converted into chitosan sulfate and to study the adsorption of chitosan sulfate by Remazol Yellow FG dye.  Isolation of chitin from crab shell was done by deproteination and demineralization process. Chitin had been converted into chitosan using demineralization process. Chitosan sulfate was made by reacting chitosan with 1 M ammonium sulfate solution. Characterizations of the chitosan are involving determination of degree of deacetylation. Functional group of chitin, chitosan and chitosan sulfate were determined by FTIR spectroscopy. The dye adsorption of chitosan sulfate was analyzed with UV-Vis spectroscopy. The result showed that rendement of chitin, chitosan and chitosan sulphate were 28.57%, 52.5% and 92%. The degree of deacetilation of chitin and chitosan were 80 – 90% and 70 – 80%. Remazol Yellow FG was adsopr 76.5%.
Chemical predictive modeling of ethyl-p-methoxycinnamate and synthesis of natural lotion from kencur (Kaempferia galanga L.) as sunscreen agents Salmahaminati; Noor Fitri; Yuvia Rafi Kusuma
Jurnal Ilmiah Pertanian Vol. 20 No. 1 (2023): Jurnal Ilmiah Pertanian
Publisher : Universitas Lancang Kuning

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31849/jip.v20i1.12454

Abstract

Solar radiation is essential for the evolution of life on earth. Solar radiation, including ultraviolet radiation (UV), reaches the earth's surface. The sun emits three types of UV radiation: UVA, UVB, and UVC, which have beneficial and harmful effects on the human body. The most important benefit is the synthesis of vitamin D in the skin. However, UVB radiation also causes direct photochemical damage to DNA. This study aimed to investigate the ability of the compound ethyl-p-methoxycinnamate (EPMS) that is available in kencur as a sunscreen agent through computational chemistry studies using the Hartree-Fock (HF) method and time-dependent density functional theory (TD-DFT) and perform synthesis of lotion from kencur extract. The investigation began with creating a molecular model of a sunscreen agent optimized for geometry using the HF method and continued with spectrum analysis using TD-DFT. The study's results showed that the analysis of the EPMS spectrum could be used as a natural UVB shield. In addition, the synthesis of lotion from kencur rhizome made using oil and water phases showed organoleptic, pH, homogeneity, and spreadability test results fitted according to the Indonesian National Standard (SNI) 16-4399-1996. It indicated that kencur lotion could potentially be used as a sunscreen agent.
Minat Mengaji dan Membayar Zakat Maal pada Masyarakat pedukuhan Tanjungsari RT.03, Sukoharjo, Ngaglik, Sleman Salmahaminati, Salmahaminati
Jurnal Inovasi Penelitian Ilmu Pendidikan Indonesia Vol 2,No 2, Maret 2025
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat, Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/rkj77g85

Abstract

Pedukuhan Tanjungsari yang merupakan pedukuhan dari desa Sukoharjo, kecamatan Ngaglik. Dusun Sukoharjo. Penduduknya pada rentang usia produktif (15-44 tahun). di Padukuhan Tanjungsari, Sleman, Yogyakarta, diperkirakan masih belum mampu baca tulis arab. Kegiatan penyuluhan yag telah dilaksanakan adalah berupa himbauan dan pembentukan pada lembaga untuk meningkatkan minat mengaji dan mengamalkan zakat maal pada warga Daerah RT.03, di Padukuhan Tanjungsari Sukoharjo Sleman Yogyakarta melalui media belajar tajwid dan analisis melalui observasi dan survey. Kegiatan tersebut dapat menumbuhkan kesadaran pentingnya membaca dan tulis paham bacaan Al-Quran serta menumbuhkan minat baca tulis huruf arab terhadap seorang dan masyarakat mitra dapat mengamalkan zakat maal serta sedekah.
Minat Mengaji dan Membayar Zakat Maal pada Masyarakat pedukuhan Tanjungsari RT.03, Sukoharjo, Ngaglik, Sleman Salmahaminati Salmahaminati
JURNAL AKADEMIK PENGABDIAN MASYARAKAT Vol. 3 No. 2 (2025): Maret
Publisher : CV. KAMPUS AKADEMIK PUBLISING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61722/japm.v3i2.4127

Abstract

Tanjungsari village which is part of Sukoharjo village, Ngaglik sub-district, Sukoharjo. The population is in the productive age range (15-44 years). in Tanjungsari village, Sleman, Yogyakarta, it is estimated that they are still unable to read and write Arabic. The extension activities that have been carried out are in the form of appeals and formation of groups to increase interest in the Qur'an and practice zakat maal in the RT.03 community, in Tanjungsari village, Sukoharjo, Sleman, Yogyakarta through the media of learning tajwid and analysis through observation and surveys. These activities can foster awareness of the importance of reading and writing understanding of the reading of the Qur'an and foster interest in reading and writing Arabic letters for a person and the partner community can practice zakat maal and alms.
Microwave-assisted extraction and computational modelling of curcumin from turmeric (Curcuma longa) for sunscreen applications Salmahaminati, Salmahaminati; Muchtar, Khopipah; Fajarwati, Febi Indah; Herawati, Mutiara; Kesumawati, Ayundyah
Jurnal Ilmiah Pertanian Vol. 22 No. 2 (2025): Jurnal Ilmiah Pertanian
Publisher : Universitas Lancang Kuning

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31849/jip.v22i2.22693

Abstract

Excessive exposure to ultraviolet (UV) radiation from sunlight can cause skin damage, including premature aging, sunburn, and increased risk of skin cancer. While synthetic sunscreen agents are widely used, concerns over their long-term safety have driven interest in natural alternatives. In this study, curcumin was extracted from turmeric rhizomes (Curcuma longa) using microwave-assisted extraction (MAE) as a potential natural sunscreen. The highest yield was obtained using ethanol as solvent (5.5%), 100 watts of microwave power (5.7%), and solvent temperature of 50 °C (7.8%). Curcumin presence was confirmed by thin layer chromatography (TLC), with Rf values from 0.63 (methanol) to 0.82 (ethanol). Fourier transform infrared (FTIR) spectroscopy showed functional groups including O–H, C–H, C=C, C=O, and C–O, along with trans-C–H benzoate vibrations. ¹H-NMR spectra supported its presence, with chemical shifts at 3.80–3.92, 6.54–7.18, and 7.31–7.49 ppm. UV-Vis analysis revealed strong absorption in the UV-A region (320–420 nm), and DFT-based computational modelling showed peaks at 276 and 405 nm. These results highlight curcumin’s potential as a photoprotective agent, supporting safer, plant-based sunscreen formulations and offering a sustainable alternative for the cosmetic industry.
Studi Reaksi Reduksi Metil Propanoat Menggunakan Logam Natrium Dalam Pelarut Metanol Salmahaminati, Salmahaminati
Kimia Padjadjaran Vol 1, No 1 (2022)
Publisher : Kimia Padjadjaran

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Abstract

Telah dilakukan reaksi reduksi senyawa ester terhadap metil propanoat menggunakan logam natrium dalam pelarut metanol. Senyawa 1-propanol diperoleh melalui reduksi metil propanoat dengan logam natrium menggunakan pelarut metanol, serta rasio mol metil propanoat dengan logam natrium. Konfirmasi struktur dari senyawa yang dihasilkan dilakukan dengan spektrometer kromatografi gas. Produk reaksi reduksi dari metil propanoat dengan logam Na dalam pelarut metanol diperoleh 1-propanol yang memiliki yield 7%. Hasil tersebut menunjukkan bahwa pelarut metanol kurang baik digunakan dalam reaksi ini dikarenakan pemisahan senyawa yang tidak maksimal pada distilasi produk berupa campuran antara metanol dan 1-propanol.
Senyawa Minyak Atsiri Pada Kulit Jeruk (Citrus Sinensis) yang Berpotensi Sebagai Tabir Surya Melalui Analisis TD-DFT (Time-Dependent Density Functional Theory) Salmahaminati, Salmahaminati
Kimia Padjadjaran Vol 1, No 1 (2022)
Publisher : Kimia Padjadjaran

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Abstract

Telah dilakukan studi kimia komputasi menggunakan metode TD-DFT pada senyawa limonen dan antranilat yang diketahui sebagai sebagian besar senyawa yang terkandung pada kulit jeruk. Kajian dilakukan dengan membuat model molekul limonen dan antranilat yang dioptimasi geometri menggunakan metode Density Functional Theory (DFT) dan dilanjutkan analisis spektrum menggunakan TD-DFT. Hasil kajian menunjukkan analisis spektrum antranilat dapat dimanfaatkan sebagai perisai alami UV B.
- Analysis of COD (Chemical Oxygen Demand) and TSS (Total Suspended Solid) Levels in River Water at UPTD Environmental Laboratory Muhammad Athar Naufal; Salmahaminati, Salmahaminati
INDONESIAN JOURNAL OF CHEMICAL RESEARCH Vol. 9 No. 1 (2024): Volume 9, ISSUE 1,2024
Publisher : Chemistry Department, Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/ijcr.vol9.iss1.art4

Abstract

Telah dilakukan penelitian yaitu analisis kadar COD (Chemical Oxygen Demand) dan TSS (Total Suspended Solid) terhadap air sungai di Laboratoirum Air di salah satu Dinas Lingkungan Hidup Pemerintah. Tujuan penelitian ini adalah untuk mengetahui kadar COD dan TSS dalam bentuk pengawasan kualitas air sebagaimana fungsi dari Laboratorium Air Dinas Lingkungan Hidup Pemerintah. Analisis penentuan kadar COD dilakukan dengan spektrofotometer UV-VIS secara refluks tertutup, sedangkan analisis penentuan kadar TSS dilakukan secara gravimetri. Hasil analisis yang diperoleh kadar COD pada sampel CA 01.31.9 sebesar 36,14 mg/L dan sampel CA 01.31.10 sebesar 36,14 mg/L. Sedangkan kadar TSS pada sampel CA 01.31.9 sebesar 15 mg/L dan sampel CA 01.31.10 sebesar 20 mg/L. Pada Hasil kadar COD tidak sesuai dengan ambang batas baku mutu air, sedangkan kadar TSS masih sesuai dengan ambang batas baku mutu air sehingga dapat digunakan sesuai ketentuan yang telah ditetapkan pada Peraturan Pemerintah Nomor 22 Tahun 2021 tentang Penyelenggaraan Perlindungan dan Pengelolaan Lingkungan Hidup.
Co-Authors Candra Dewinara Restu Yudandhiss Fajarwati, Febi Indah Kesumawati, Ayundyah Mokhammad Fajar Pradipta Muchtar, Khopipah Muhammad Athar Naufal Mutiara Herawati, Mutiara Noor Fitri Rostyanesia, Rostyanesia Sahadad Vidya, Putri Dwinanda Yuvia Rafi Kusuma