Claim Missing Document
Check
Articles

Found 6 Documents
Search

Sintesis Turunan Amida N-4-O-Asetilferuloilmorfolina dari Asam Ferulat Melalui Metode Konversi Tidak Langsung Sumarna, Sabir; Firdaus, Firdaus; Soekamto, Nunuk H.
Indonesian Journal of Chemical Research Vol 4 No 1 (2016): Edisi Bulan Juli (Edition For July)
Publisher : Jurusan Kimia, Fakultas Sains dan Teknologi, Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/ijcr.2016.4-sab

Abstract

Synthesis of N-4-O-asetilferuloylmorpholine from ferulic acid via indirect conversion methods with acetylation, chlorination and amidation (in situ) reactions have been conducted. The acetylation was carried out using acetic anhydride reagent in pyridine solvent at room temperature for 6 hours. The chlorination was performed with thionyl chloride in benzene solvent by reflux at 75°C for 4 hours, proceeded by in situ amidation utilizing morpholine in the presence of triethylamine and pyridine using dichloromethane solvent at room temperature. The target molecule as white crystalline solids with m.p. of 91-92°C. Characterization of these compounds was committed by FTIR spectrophotometry.
Preliminary Study on the Potential of Red Fruit Pigment (Pandanus conoideus) from West Papua as Dye-Sensitized Solar Cell (DSSC) Stepanus, Jamius Bin; Patiran, Abdul Zaid; Sumarna, Sabir; Islam, Muh. Fajar
Hydrogen: Jurnal Kependidikan Kimia Vol 12, No 6 (2024): December 2024
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v12i6.13441

Abstract

The red fruit (Pandanus conoideus) is an endemic plant from Papua, known for its distinctive color and shape. This fruit is recognized for its bioactive properties, such as antioxidant, anti-inflammatory, and antihyperglycemic effects. Its high pigment content is believed to have potential as a sensitizer in DSSC applications. However, research on this topic remains underexplored. Therefore, the aim of this preliminary study is to investigate the potential of red fruit pigments for DSSC. The characterization of red fruit pigments was conducted through phytochemical screening, FTIR and UV-Vis spectral analysis, as well as literature reviews. Pigment extraction was carried out using maceration without involving drying or grinding processes. Phytochemical screening results revealed that the macerate contains flavonoids, alkaloids, phenolics and terpenoids, compounds commonly used as natural pigments in DSSCs. FTIR analysis showed the presence of functional groups such as carboxyl (-COOH), carbonyl (C=O), and hydroxyl (-OH), which can act as effective anchoring groups when interacting with nanosemiconductor surfaces. Meanwhile, UV-Vis analysis showed absorption peaks in the UV region (wavelength 204–399 nm) and the visible region (wavelength 400–550 nm). Based on literature studies and research findings, it can be concluded that the pigments in red fruit have potential applications as DSSC sensitizers.
PKM PELATIHAN ECOPRINT BAGI DHARMA WANITA PERSATUAN DINAS KEHUTANAN PROVINSI PAPUA BARAT Santi, Darma; Mangallo, Bertha; Somar, Evelina; Novitasari, Agnes Dyah; Susilowati, Susilowati; Santoso, Bimo Budi; Sirampun, Alfhons Daniel; Sumarna, Sabir; Morin, Jacson Viktor; Langsa, Markus Heryanto; Taher, Achmad; Islam, Muhammad Fajar
Panrita Inovasi: Jurnal Pengabdian Kepada Masyarakat Vol 4, No 1 June 2025
Publisher : Universitas Negeri Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56680/pijpm.v4i1.72555

Abstract

This training was designed to introduce ecoprint techniques to members of the Women's Dharma Association of the West Papua Provincial Forestry Service, emphasizing its potential as a community-based business opportunity. The activity utilized natural materials readily available in the surrounding environment, such as butterfly pea leaves and flowers, teak leaves, and other local foliage. The training was conducted in stages, beginning with an introduction to the basic concepts of eco-printing, followed by hands-on practice using two main techniques: pounding and steaming. These techniques were applied to cloth tote bags and ceramic mugs. The results showed that participants demonstrated a higher level of proficiency in producing eco prints using the steaming technique compared to the pounding method.
Preliminary Study on the Potential of Red Fruit Pigment (Pandanus conoideus) from West Papua as Dye-Sensitized Solar Cell (DSSC) Stepanus, Jamius Bin; Patiran, Abdul Zaid; Sumarna, Sabir; Islam, Muh. Fajar
Hydrogen: Jurnal Kependidikan Kimia Vol. 12 No. 6 (2024): December 2024
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v12i6.13441

Abstract

The red fruit (Pandanus conoideus) is an endemic plant from Papua, known for its distinctive color and shape. This fruit is recognized for its bioactive properties, such as antioxidant, anti-inflammatory, and antihyperglycemic effects. Its high pigment content is believed to have potential as a sensitizer in DSSC applications. However, research on this topic remains underexplored. Therefore, the aim of this preliminary study is to investigate the potential of red fruit pigments for DSSC. The characterization of red fruit pigments was conducted through phytochemical screening, FTIR and UV-Vis spectral analysis, as well as literature reviews. Pigment extraction was carried out using maceration without involving drying or grinding processes. Phytochemical screening results revealed that the macerate contains flavonoids, alkaloids, phenolics and terpenoids, compounds commonly used as natural pigments in DSSCs. FTIR analysis showed the presence of functional groups such as carboxyl (-COOH), carbonyl (C=O), and hydroxyl (-OH), which can act as effective anchoring groups when interacting with nanosemiconductor surfaces. Meanwhile, UV-Vis analysis showed absorption peaks in the UV region (wavelength 204–399 nm) and the visible region (wavelength 400–550 nm). Based on literature studies and research findings, it can be concluded that the pigments in red fruit have potential applications as DSSC sensitizers.
PENAPISAN FITOKIMIA EKSTRAK METANOL AKAR Gofasa (Vitex Cofassus) asal Pulau Halmahera DAN POTENSINYA SEBAGAI ANTIOKSIDAN dan ANTIKOLESTEROL Khadijah, Khadijah; merlin, Merlin; Baturante, Nurjannah; sernita, Sernita; Sumarna, Sabir; Jayali, Ahmad Muchsin
SAINTIFIK@: Jurnal Pendidikan MIPA Vol 9, No 1 (2024): SAINTIFIK@: Jurnal Pendidikan MIPA EDISI MARET 2024
Publisher : Universitas Khairun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33387/saintifik.v9i1.8399

Abstract

Vitex cofassus (Gofasa) merupakan salah satu tanaman tropika yang secara tradisional telah digunakan sebagai bahan obat. Skrining  fitokimia, uji antioksidan, antikolesterol dan uji toksisitas terhadap A. salina terhadap ekstrak metanol Vitex cofassus  telah dilakukan. Ekstraksi komponen kimia dilakukan dengan cara maserasi dengan pelarut metanol dan dilakukan uji fitokimia terhadap ekstrak untuk mengetahui komponen kimianya. Uji kolesterol dilakukan dengan menggunakan metode CHOD-PAP dan uji antioksidan dilakukan dengan metode DPPH.  Hasil  skrining fitokimia menunjukkan ekstrak metanol akar V. cofassus mengandung alkaloid, terpenoid, flavonoid dan tanin. Ekstrak metanol akar V. cofassus memiliki kemampuan untuk menurunkan kolesterol sebanyak 92% dan memiliki nilai IC50 terhadap DPPH sebesar  65.043 µg/mL. Hal ini menunjukkan ekstrak metanol akar V. cofassus memiliki kemampuan sebagai antikolesterol dan antioksidan.
Analysis of Lipid Yield from Chaetoceros calcitrans Microalgae Extract Using Gas Chromatography Stepanus, Jamius Bin; Likumahwa, Fervin Mayos; Kesauliyaa, Olivia Marie Caesaria; Angrianto, Novaldi Laudi; Sumarna, Sabir; Islam, Muh. Fajar
Jurnal Kimia Fullerene Vol 10 No 2 (2025): Fullerene Journal Of Chemistry
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37033/fjc.v10i2.724

Abstract

Renewable energy (RE) is a solution to the threat of the upcoming energy crisis. The increasingly massive energy transition is expected to significantly reduce the use of fossil fuels. Microalgae are one of the potential sources of RE for bioenergy (biodiesel) production due to their lipid content. This research was conducted to determine the percentage of lipid components; free fatty acids (FFA), monoglycerides (MAG), diglycerides (DAG), and triglycerides (TAG) in Chaetoceros calcitrans microalgae and to compare lipid yields using two extraction methods: Bligh-Dyer (wet samples) and Soxhlet extraction (dry samples).The results for C. calcitrans extracted using the Bligh-Dyer method showed that the percentage of lipid components (FFA, MAG, DAG, and TAG) ranged from 5.44% to 17.10%, with a total of 47.92%, and the lipid yield from 6 g of wet sample was 5.07%.Meanwhile, for the C. calcitrans extract using Soxhlet method, it was found that the percentage of lipid components (FFA, MAG, DAG and TAG) ranged from 6.79 to 18.01% with a total of 63.08% and the lipid yield from 20 g of dry samples was 0. 44%.