PEMANFAATAN EKSTRAK KULIT BUAH NAGA MERAH BERDASARKAN PENGARUH UKURAN PARTIKEL SEBAGAI INDIKATOR ASAM-BASAPADA PROSES TITRASI
Abstract
Dragon fruit skin contains flavonoid compounds, one of which is anthocyanin. This anthocyanin can change color as the pH value changes so it can be applied as an acid-base titration indicator. The purpose of this research is to utilize red dragon fruit skin extract (Hylocereus polyrhizus) as an acid-base indicator in the titration process based on the influence of particle size (3.00 × 3.00 × 1.00) cm; (-14+18); (-18+20); (-20+70); (-70+100); (-100+120) mesh. The extract was obtained by maceration extraction for 24 hours with 96% ethanol solvent: 10% citric acid. The results of determining the color change trajectory were obtained when the acidic condition was light brown and when the alkaline condition was bright yellow. The highest result was obtained at particle size of -14 + 18 mesh with a rendement of 30.42%. The extract was tested as an acid-base titration indicator with a pH range of 8.3–10.0 for the pp indicator as a comparison, while methyl orange was used as a comparison with a pH of 3.1 – 4.4. So that this red dragon fruit peel extract can be used as an indicator in acid-base titration.
Keywords: Acid-base titration, particle size, red dragon fruit peel
Keywords
Full Text:
PDFReferences
Kurniawati, A. (2020). Ekstraksi Dan Analisis Zat Warna Ekstrak Kulit Buah Manggis (Garciana Mangostana L.) Serta Aplikasinya Sebagai Indikator Asam-Basa, Indonesian Journal of Chemical Science.
Maulida, R. dan Guntarti, A. (2015). ‘Pengaruh Ukuran Partikel Beras Hitam (Oryza sativa L .) Terhadap Rendemen Ekstrak Dan Kandungan Total Antosianin’, 0, pp. 9–16.
Meganingtyas, W. A. M. (2021). ‘Ekstraksi Antosianin dari Kulit Buah Naga (Hylocereus costaricensis) dan Pemanfaatannya sebagai Indikator Alami Titrasi Asam-Basa’, 41(3), pp. 278–284.
Nuryanti. S, Matsjeh. S, Anwar. C, dan Raharjo, J.T. (2010) ‘Indikator Titrasi Asam-Basa Dari Ekstrak Bunga Sepatu’, 30(3), pp. 178–183.
Pangestu, A. (2022). Materi Kimia dari Pakar. (Online) Available at: https://www.pakarkimia.com/indikator-asam-basa/, diakses 31 July 2022.
Sapri, Fitriani, A. dan Narulita, R. (2014). ‘Pengaruh Ukuran Serbuk Simplisia Terhadap Rendemen Ekstrak Etanol Daun sirsak (Annona muricata L .) dengan Metode Maserasi’, Prosiding Seminar Nasional Kimia, pp. 1–4.
Seidel, V. (2006). ‘Initial and Bulk Extraction’, Natural Products Isolation, 20, pp. 27–46.
Yazid, E. A. dan Munir, M. M. (2018). ‘Potensi antosianin dari ekstrak bunga rosella (Hibischus sabdariffa L) sebagai alternatif indiator titrasi asam basa.’, Jurnal Sains, 8(15), pp. 1–7.
DOI: https://doi.org/10.46964/jimsi.v2i2.1694
Refbacks
- There are currently no refbacks.
Copyright (c) 2022 JURNAL TEKNIK KIMIA VOKASIONAL (JIMSI)
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
Editor Jurnal Teknik Kimia Vokasional (JIMSI) address :
ISSN 2775-9083 (Print) | ISSN 2775-9075 (Online)
Department Of Chemical Engineering, Politeknik Negeri Samarinda
Jl. Dr. Ciptomangunkusumo Kampus Gunung Panjang Samarinda 75131
Phone: Zainal Arifin (+62 857 500 60 400)
E-Mail: jimsi@polnes.ac.id
Jurnal Teknik Kimia Vokasional (JIMSI) by http://e-journal.polnes.ac.id/index.php/jimsi is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.