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All Journal PROSIDING SEMINAR KIMIA Jambura Journal of Educational Chemistry
Hartandi, Dimas
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Chemistry Education Other

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PEWARNAAN SERAT DAUN DOYO MENGGUNAKAN PEWARNA ALAMI DARI EKSTRAK DAUN KETAPANG Nursilawati, Nursilawati; Awaliyah, Nabilah Nailah; Pakaenoni, Frederich; Larasati, Herlin Alfiana; Hartandi, Dimas; Rahmadani, Agung; Wirhanuddin, Wirhanuddin; Sukemi, Sukemi
PROSIDING SEMINAR KIMIA Vol 3 No 1 (2024): Prosiding SNK 2024
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Abstract

Ulap Doyo is a traditional woven fabric of the Dayak Benuaq tribe in East Kalimantan. Ulap Doyo is made from doyo (Curculigo latifolia) leaf fibers with the base color of whitish cream. Natural dye is used to create patterns. Ketapang (Terminalia catappa L.) leaves contain tannins that can be used as natural dyes. This study aimed to determine the color change of doyo leaf fibers dyed using aqueous ketapang leaf extract. The natural dye was extracted by decoction technique with distilled water as solvent. Tannin content was analyzed using phytochemical tests and permanganometric titration. The dyeing process used the dye bath technique at 92°C of dyeing temperature, 1:100 (w/v) of MLR, and 135 minutes of dyeing time. Before dyeing process, the extract and fibers were treated using 5 mL of 1 M acetic acid (AA) and 5 mL of 1 M ammonia (Am). The color change of the dyed fibers: untreated fiber - untreated extract (UF-UE), treated fiber - untreated extract (TFAA-UE, TFAm-UE), untreated fiber - treated extract (UF-TEAA, UF-TEAm), and treated fiber - treated extract (TFAA-TEAA, TFAm-TEAm) were measured using ImageJ application and shown in term of ∆I. This research results shows that the extract was dark brown solution with 0,280 ± 0,001 % (w/w) of tannin content. The color shade of the dyed doyo leaf fibers is pale brown to brown. The treatment of the extract using acetic acid (UF-TEAA) produce the highest colour shade and ∆I value. This study shows that the ketapang leaf extract can be used as dye for ulap doyo. Keywords : ulap doyo, Curculigo latifolia, Terminalia catappa L., dyeing bath technique
Kajian Literatur Pemanfaatan Teknologi Artificial Intelligence untuk Meningkatkan Keterampilan Abad 21 Siswa dalam Pembelajaran Kimia Prastika, Nanda Diah; Anjarwati, Dewi; Awaliah, Meisya Adelia Salsabila; Hartandi, Dimas; Rahmadani, Agung; Erika, Farah
Jambura Journal of Educational Chemistry Vol 6, No 1 (2024): February
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jjec.v6i1.23644

Abstract

Current technological developments provide many changes, especially in the field of education. The development of technology requires humans to be able to adapt to life in this era. One of them is by utilizing artificial intelligence (AI) in chemistry learning to open the way to a new era in chemistry education. Literature review was carried out using the narrative literature review method to identify the role of AI in chemistry learning in improving 21st century skills. The application of AI in chemistry learning not only has a positive impact on 21st century skills, but also changes the way students interact with chemistry concepts and opens up new opportunities for students to understand chemistry concepts in more depth through enhanced learning media, interactive simulations, and predictions accurate. The application of AI has been widely applied in chemistry learning and has shown positive results in improving 21st century skills.
Co-Authors Anjarwati, Dewi Awaliah, Meisya Adelia Salsabila Awaliyah, Nabilah Nailah Farah Erika Larasati, Herlin Alfiana Nursilawati, Nursilawati Pakaenoni, Frederich Prastika, Nanda Diah Rahmadani, Agung Sukemi Sukemi Wirhanuddin, Wirhanuddin