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All Journal Jurnal Sains & Teknologi Lingkungan ALCHEMY Jurnal Penelitian Kimia Indonesian Journal of Chemistry JMM (Jurnal Masyarakat Mandiri) Jurnal Pendidikan dan Kewirausahaan Jurnal Rekayasa Lingkungan Cassowary Jurnal Natural Yumary: Jurnal Pengabdian kepada Masyarakat Jurnal Manusia dan Lingkungan al Kimiya : Jurnal Ilmu Kimia dan Terapan KOPEMAS Environmental Insight Journal JISTECH: Journal of Information Science and Technology
Agnes Dyah Novitasari Lestari
Universitas Papua
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Economics, Econometrics & Finance Education Energy Engineering Environmental Science Materials Science & Nanotechnology Mathematics Physics Social Sciences Other

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Potensi Pengembagan Dye Sensitized Solar Cell (DSSC) dengan Sensitizer Zat Warna Alami dari Tumbuhan Asal Papua sebagai Alternatif Solusi Krisis Energi dan Pemanasan Global: The Potential for Development of Dye Sensitized Solar Cell (DSSC) with Natural Dyes Sensitizers from Papuan Plants as an Alternative Solution to the Energy Crisis and Global Warming Agnes Dyah Novitasari Lestari
JISTECH: Journal of Information Science and Technology Vol 6 No 1 (2014): Februari 2014
Publisher : Universitas Papua

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Abstract

Currently, the energy crisis and global warming are an important issue internationally, including Papua. Various attempts were made to overcome these problems, for instance the development of alternative energy that does not cause global warming: the solar energy harvested by the solar cells (solar cells). There is an obstacle for solar cell applications: the high production costs. This problem is solved by the discovery of a type of solar cell Dye Sensitizized Solar Cell (DSSC).Utilization of local potential will reduce the cost of fabricating such a device. Papua is well know for its flora abundance and diversity, one of which is a natural dye-producing plants. Color produced by these plants show content that has a group of compounds that can absorb light (chromophore) contained therein. The content of this chromophore compounds provide potential it can be used as a sensitizer in DSSC, thus resulting DSSC that is relatively cheap for Papua.
Functional Bioplastic Based on Chitosan/Sago Starch (Metroxylon sago) with the Addition of Black Fruit (Haplolobus sp.) Leaves Ethanolic Extract Agnes Dyah Novitasari Lestari; Muchammad Fauzan Kuri Pasai; Evelina Somar; Dewi Eviane; Gabriella Shine De Kweldju
ALCHEMY Jurnal Penelitian Kimia Vol 21, No 2 (2025): September
Publisher : UNIVERSITAS SEBELAS MARET (UNS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/alchemy.21.2.100395.337-345

Abstract

Bioplastic as an antioxidant and antibacterial packaging has been synthesized from chitosan and sago starch with Black fruit leaves ethanolic extract. The bioplastic synthesis was done by mixing a solution of chitosan, sago starch, glycerol, and ethanolic extract of Black fruit leaves, pouring it into a petri dish, and then drying it in an oven. The bioplastic produced was then characterized using Fourier transform infrared spectroscopy (FTIR). The results show that increasing the weight ratio of chitosan/sago starch increased tensile strength, decreased elongation, decreased thickness, and increased biodegradation time. The addition of ethanolic extract of black fruit leaves reduces tensile strength at a chitosan/starch weight ratio of 4:1, increases tensile strength at a chitosan/starch weight ratio of 1:1, tends to minimize elongation at both Chitosan/starch ratios, tends to increase thickness at a chitosan/starch weight ratio of 4:1, decreases thickness at a Chitosan/starch weight ratio of 1:1, and increases biodegradation time. The best bioplastic formulation in this study found in  CS11E1 (weight ratio of Chitosan/starch 1:1, extract concentration 1%), with a tensile strength of 4.71 MPa, elongation of 29.33%, thickness of 0.07 mm, and biodegradation time of 6 days.
Co-Authors Ahmad Muin Ali Aulia Ghozali Antoni Ungirwalu Bertha Mangallo Bertha Mangallo Chafid Fandel Darma Santi Dewi Eviane Dewi Eviane Dewi Rahyuni Dewi Rahyuni Dewi Rahyuni Dwi Siswanta Dwi Siswanta Dwi Siswanta Eko Sugiharto Eko Sugiharto Evelina Somar Gabriella Shine De Kweldju Ishak Musaad Louisa Jessica Permatasari Mamengko, David Victor Mirna Husen Muchammad Fauzan Kuri Pasai Mudasir Mudasir Muin, Ahmad Murtihapsari . Murtihapsari, Murtihapsari - Musaad, Ishak Naibaho, Julius Nur Iswanto Nur Iswanto Nur Iswanto Nur Iswanto Nurul Fajeriana M Ponisri, Ponisri Pribowo Angling Kusumo Ramlah Ramlah Ramlah, Ramlah - Rina Ernawati Ronny Martien Somar, Evelina Sukmawati Sukmawati Sukmawati, Sukmawati Susilowati Syafrudin Raharjo Yori Turu Toja, Yori Turu Yoshua