Indikator pH Dari Kulit Buah Naga Merah (Hylocereus Polyrhizus) Untuk Praktikum Kimia Di SMAN 1 Wonosari Klaten
DOI:
https://doi.org/10.23917/abditeknoyasa.v4i1.1907Keywords:
indikator pH, praktikum kimia, asam basa, buah naga merahAbstract
Saat ini indikator sintetik adalah pilihan titrasi asam-basa, tetapi karena alasan polusi lingkungan, ketersediaan, dan biaya, pencarian senyawa alami sebagai indikator asam basa telah dimulai. Indikator membantu menentukan titik ekivalen dalam titrasi asam basa (titrasi netralisasi). Indikator menunjukkan perubahan warna yang signifikan akibat perubahan pH. Pigmen berwarna yang diperoleh dari berbagai jenis tumbuhan telah ditemukan menunjukkan perubahan warna dengan variasi pH. Saat ini berbagai ekstrak tumbuhan digunakan sebagai indikator asam basa, salah satunya adalah kulit buah naga merah (Hylocereus polyrhizus) yang belum dimanfaatkan secara optimal. Kegiatan pengabdian ini dilakukan di SMA Negeri 1 Wonosari, Klaten, dengan mengambil topik indikator titrasi asam basa untuk memberikan alternatif penggunaan ekstrak kulit buah naga dalam pembelajaran praktikum kimia. Umumnya penggunaan indikator asam basa antara lain adalah kertas lakmus dan indikator berbentuk larutan seperti metil orange dan phenolftalein. Penggunaan indikator alami dapat menjadi alternatif pendukung dalam pemilihan indikator yang ramah lingkungan. Ekstrak kulit buah naga ini selanjutnya dibuat menjadi bentuk kertas pH sehingga dapat digunakan sebagai indikator asam basa.
Downloads
References
Purnama, H., N. Hidayati, DS. Safitri, S.Rahmawati (2017), Effect of initial treatment in the preparation of natural indigo dye from Indigofera tinctoria, AIP Conference Proceedings 1855, 020022 https://doi.org/10.1063/1.4985467
Okoduwa, Stanley IR., Lovina O. Mbora, Matthew E. Adu, and Ameh A. Adeyi, (2015) Comparative Analysis of the Properties of Acid-Base Indicator of Rose (Rosa setigera), Allamanda (Allamanda cathartica), and Hibiscus (Hibiscus rosasinensis) Flowers, Hindawi Publishing Corporation, Biochemistry Research International, Volume 2015, Article ID 381721, 6 pages, http://dx.doi.org/10.1155/2015/381721
N. Pattarapongdilok, P. Malichim, N. Simmee, and J. Sichaem, (2021), Senna Flower Extract as an Indicator for Acid-Base Titration, RASĀYAN J. Chem., Vol. 14, No.2: 1402-1407.
N. Pattarapongdilok, P. Malichim, N. Simmee, and J. Sichaem, (2019), Natural Indicator for Acid- Base Titration from Thai Yellow Flower Extracts, International Journal of Chemical Engineering and Applications, Vol. 10, No. 1. http://doi.org/10.18178/ijcea.2019.10.1.734
Nuryanti, S., S. Matsjeh, C. Anwar, T.J. Raharjo, (2010), Indikator Titrasi Asam Basa dari Ekstrak Bunga Sepatu (Hibiscus rosa sinensis L), Agritech, pp. No. 3, Vol. 30. https://doi.org/10.22146/agritech.9671
Pratama, Y., A.T. Prasetya, Latifah, (2015). Pemanfaatan Daun Jati sebagai Indikator Titrasi Asam Basa, Indonesian Journal of Chemical Science, 4(2).https://doi.org/10.15294/IJCS.V4I2.6181
Indira, C. (2015). Pembuatan Indikator Asam Basa Karamunting, Kaunia Jurnal Sains dan Teknologi, Vol. XI No. 1 , 1-10. http://digilib.uin-suka.ac.id/id/eprint/27031
N. Kapilraj, S. Keerthanan, M. Sithambaresan, Natural Plant Extracts as Acid-Base Indicator and Determination of Their pKa Value, Journal of Chemistry, vol. 2019, Article ID 2031342, 6 pages, 2019. https://doi.org/10.1155/2019/2031342
Syahirah L, N. F., Lutfi MY, M. U., A, A., Hafiz R, M., Zulhelmi OA, M., Adzhan O, M. A., & PY, K. (2018). A Comparative Analysis of Clitoria ternatea Linn. (Butterfly Pea) Flower Extract as Natural Liquid pH Indicator and Natural pH Paper. Dhaka University Journal of Pharmaceutical Sciences, 17(1), 97–103. https://doi.org/10.3329/dujps.v17i1.37125
Sanchez, JMP., et al, (2021), Experimenting on Natural Acid-Base Indicators: A Home-based Chemistry Activity during the COVID 19 Pandemic as evaluated by Teachers, KIMIKA Volume 32, Number 1, pp. 34-45. https://doi.org/10.26534/kimika.v32i1.34-45
Jamil, Nadzirah, Mohd Naqiuddin Mohd Zairi, Nur A’in Mohd Nasim, Furzani Pa’ee, (2018), Influences of Environmental Conditions to Phytoconstituents in Clitoria ternatea (Butterfly Pea Flower) – A Review, Journal of Science and Technology, Vol. 10 No. 2 (2018) p. 208-228 https://10.30880/jst.2018.10.02.029
Saptarini, Nyi Mekar, Dadan Suryasaputra, Hera Nurmalia, (2015), Application of Butterfly Pea (Clitoria ternatea Linn) Extract as an Indicator of Acid-Base Titration, Journal of Chemical and Pharmaceutical Research, 7(2):275-280
Muhammad, N. Alhassan, Ahmad Bala Ahmad, Khalid Da’u Khalid, Mustapha Balarabe Idris, (2016), Comparative Assessments of Ipomoea and Caesalpinia Extracts Used as Potential Acid-Base Indicator as Replacement to Synthetics, European Journal of Biomedical and Pharmaceutical Science, Volume 3, Issue 3, 256-259.
Jackman, R.L., R. Yada, M.A. Tung, (1987). A Review: Separation and Chemical Properties of Anthocyanins used for Their Qualitative and Quantitative Analyses. Journal of Food Biohemistry, 11:179-208. https://doi.org/10.1111/j.1745-4514.1987.tb00128.x
Torskangerpoll, O., Andersen, O.M., (2005). Colour Stability of Anthocyanins in Aqueous Solution at Various pH Values. Food Chemistry, 89: 427-440. https://doi.org/10.1016/j.foodchem.2004.03.002
Amor, BB., Allaf, K., (2009). Impact of Texturing Using Instant Pressure Drop Treatment Prior to Solvent Extraction of Anthocyanins from Malaysian Rosselle (Hibiscus sabdarifa), Food Chemistry, 115: 820-825. https://doi.org/10.1016/j.foodchem.2008.12.094
Downloads
Submitted
Accepted
Published
How to Cite
Issue
Section
License
Copyright (c) 2023 Herry Purnama, Kholisoh Hayati, Claudia Candra Setyaningrum
This work is licensed under a Creative Commons Attribution 4.0 International License.
