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Abstract
Antioxidants are compounds that can counteract free radicals and protect the body from degenerative diseases, such as heart disease, cancer, and diabetes. Kawista leaves (Limonia acidissima L.) are a natural source of antioxidants containing secondary metabolites, namely phenols, flavonoids, and tannins. This study aims to compare extraction methods (maceration, percolation, reflux, and soxhlet) in terms of antioxidant activity, total phenolic, flavonoid, and tannin content from kawista leaf methanol extracts. Antioxidant activity was analyzed using the DPPH method, while total phenolic, flavonoid, and tannin content were determined using the Folin-Ciocalteu, AlCl₃, and Folin-Denis methods, respectively. The results showed that the percolation method yielded the highest extract yield (23.3%) compared to reflux (18.9%), soxhlet (13.9%), and maceration (11%). The Soxhlet extract showed superior antioxidant activity, as indicated by a lower IC50 (93.21 ppm) compared to the maceration (119.81 ppm), reflux (114.01 ppm), and percolation (128.71 ppm) methods. The highest total levels of phenolic, flavonoid, and tannin were also observed in the soxhlet extract, with concentrations of 92.48 mg GAE/g, 6.49 mg QE/g, and 97.85 mg TAE/g, respectively. Thus, differences in extraction methods can affect the antioxidant activity and levels of secondary metabolites in methanol extracts of kawista leaves.
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References
- Attarde, D.L., Chaudhari, B.J., and Bhambar, R.S., (2011), Phytochemical Investigation and In Vitro Antioxidant Activity of Extracts from Leaves of Limonia acidissima Linn. (Rutaceae), Journal of Pharmaceutical Research, 4(3), pp. 766–768.
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- Gulcin, İ., (2025), Antioxidants: a Comprehensive Review, Archives of Toxicology, 99(5), pp. 1893-1997.
- Hassanpour, S.H., and Doroudi, A., (2023), Review of the Antioxidant Potential of Flavonoids as a Subgroup of Polyphenols and Partial Substitute for Synthetic Antioxidants, Avicenna Journal of Phytomedicine, 13(4), pp. 354-376.
- Isnindar and Luliana, S., (2025), Effect of Extraction, Ratio, and Solvent Concentration on Total Flavonoid Content and Antioxidant Activity of Singkel (Premna Serratifolia Linn.) Using DPPH Method, Jurnal Tekno Sains, 15(2), pp. 103-114.
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- Mufidah., Rohama., and Hidayah, N., (2025), Determination of Flavonoid Levels of Bidara Leaf Extract (Ziziphus spina-christi (L.) Desf) Based on Variation in Particle Size Using the UV-Vis Spectrophotometry Method, As-Syifaa Jurnal Farmasi, 17(2), pp. 145-152.
- Muflihah, Y.M., Gollavelli, G., AND Ling, Y.-C., (2021), Correlation Study of Antioxidant Activity with Phenolic and Flavonoid Compounds in 12 Indonesian Indigenous Herbs, Antioxidants, 10, pp. 1530.
- Mukhriani., (2014), Ekstraksi, Pemisahan Senyawa, dan Identifikasi Senyawa Aktif, Jurnal Kesehatan, 7(2), pp. 361-367.
- Nugroho, A., (2017), Teknologi Bahan Alam, Buku Ajar, Universitas Lambung Mangkurat, Banjarmasin.
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- Rahimah, S.B., Djunaedi, D.D., Soeroto, A.Y., and Bisri, T., (2019). The Phytochemical Screening, Total Phenolic Contents and Antioxidant Activities in Vitro of White Oyster Mushroom (Pleurotus Ostreatus) Preparations, Open Access Macedonia Journal of Medical Sciences, 7(15), pp.2404-2412.
- Rauf, A.A., and Saranani, S. (2023). Penetapan Kadar Polifenol Total dan Tanin Total dari Ekstrak Etanol Buah Senggani (Melastoma malabathricum L.) serta Uji Aktivitas Antioksidan dengan Metode ABTS. Jurnal Pharmacia Mandala Waluya, 2(6), pp. 295–304.
- Reo, A.R., Berhimpon, S., and Montolalu, R., (2017), Secondary Metabolites of Gorgonia, Paramuricea Clavata, Jurnal Ilmiah Platax, 5(1), pp. 42–48.
- Ridwanuloh, D., and Mursal, I.L.P. (2018). Isolasi Metabolit Sekunder dari Daun Kawista (Limonia acidissima L.). Pharma Xplore: Jurnal Ilmiah Farmasi, 3(1), pp. 159-163.
- Safitri, I., Nuria, M.C., & Puspitasari, A.D., (2018), Perbandingan Kadar Flavonoid dan Fenolik Total Ekstrak Metanol Daun Beluntas (Pluchea Indica L.) pada Berbagai Macam Ekstraksi, Jurnal Inovasi Teknik Kimia, 3(1), pp. 31–36.
- Syamsudin, S., Alimuddin, A.H., & Sitorus, B., (2022), Isolasi dan Karakterisasi Senyawa Fenolik dari Daun Putat (Planchonia Valida Blume), Indonesian Journal Of Pure And Applied Chemistry, 5(2), 85-98.
- Verawati, V., Nofiandi, D., & Petmawati, P., (2017), Pengaruh Metode Ekstraksi terhadap Kadar Fenolat Total dan Aktivitas Antioksidan Daun Salam (Syzygium polyanthum (Wight) Walp.), Jurnal Katalisator, 2(2), pp. 53–60.
- Yudistirani, S.A., & Islam., M.B. (2019), Metode Ekstraksi untuk Perolehan Kandungan Flavonoid Tertinggi dari Ekstrak Daun Kelor’. Jurnal Konversi. 8(2), pp. 31–35.
References
Attarde, D.L., Chaudhari, B.J., and Bhambar, R.S., (2011), Phytochemical Investigation and In Vitro Antioxidant Activity of Extracts from Leaves of Limonia acidissima Linn. (Rutaceae), Journal of Pharmaceutical Research, 4(3), pp. 766–768.
Azizah, T.N., Harmastuti, N., & Wijayanti, T. (2024). Perbandingan Studi Aktivitas Antioksidan Ekstrak Metanol, Etanol 70%, dan Etanol 96% Daun Kawista (Limonia acidissima L.), Jurnal Ilmu Farmasi dan Farmasi Klinik, 21(1), pp. 56-64.
Cao, S., Liang, J., Chen, M., Xu, C., Wang, X., Qiu, L., Zhao, X., Hu, W., (2025), Comparative Analysis of Extraction Technologies for Plant Extracts and Absolutes, Frontiers in Chemistry, 13, pp.1536590.
Castillo-Correa, M., Montalbán-Hernández, C., Navarro-Hortal, M.D., Peña-Guzmán, D., Badillo-Carrasco, A., Varela-López, A., Hinojosa-Nogueira, D., and Romero Márquez, J.M., (2025), Exploring the Influence of Extraction Methods, Solvents, and Temperature on Total Phenolic Recovery and Antioxidant Capacity in Olive Leaf Extracts: A Systematic Review with Quantitative Synthesis. Separations, 12, pp. 236.
Chandimali, N., Bak, S.G., Park, E.H., Lim, H.J., Won, Y.S., Kim, E.K., Park, S.I., and Lee, S.J., (2025), Free Radicals and Their Impact on Health and Antioxidant Defenses: a Review, Cell Death Discovery, 11(1), pp. 19.
Gulcin, İ., (2025), Antioxidants: a Comprehensive Review, Archives of Toxicology, 99(5), pp. 1893-1997.
Hassanpour, S.H., and Doroudi, A., (2023), Review of the Antioxidant Potential of Flavonoids as a Subgroup of Polyphenols and Partial Substitute for Synthetic Antioxidants, Avicenna Journal of Phytomedicine, 13(4), pp. 354-376.
Isnindar and Luliana, S., (2025), Effect of Extraction, Ratio, and Solvent Concentration on Total Flavonoid Content and Antioxidant Activity of Singkel (Premna Serratifolia Linn.) Using DPPH Method, Jurnal Tekno Sains, 15(2), pp. 103-114.
Kalpoutzakis, E., Chatzimitakos, T., Athanasiadis, V., Mitakou, S., Aligiannis, N., Bozinou, E., Gortzi, O., Skaltsounis, L.A., and Lalas, S.I., (2023), Determination of the Total Phenolics Content and Antioxidant Activity of Extracts from Parts of Plants from the Greek Island of Crete, Plants (Basel), 12(5), pp. 1092.
Martemucci, G., Costagliola, C., Mariano, M., D’andrea, L., Napolitano, P., and D’Alessandro, A.G., (2022), Free Radical Properties, Source and Targets, Antioxidant Consumption and Health, Oxygen, 2(2), pp. 48-78.
Mufidah., Rohama., and Hidayah, N., (2025), Determination of Flavonoid Levels of Bidara Leaf Extract (Ziziphus spina-christi (L.) Desf) Based on Variation in Particle Size Using the UV-Vis Spectrophotometry Method, As-Syifaa Jurnal Farmasi, 17(2), pp. 145-152.
Muflihah, Y.M., Gollavelli, G., AND Ling, Y.-C., (2021), Correlation Study of Antioxidant Activity with Phenolic and Flavonoid Compounds in 12 Indonesian Indigenous Herbs, Antioxidants, 10, pp. 1530.
Mukhriani., (2014), Ekstraksi, Pemisahan Senyawa, dan Identifikasi Senyawa Aktif, Jurnal Kesehatan, 7(2), pp. 361-367.
Nugroho, A., (2017), Teknologi Bahan Alam, Buku Ajar, Universitas Lambung Mangkurat, Banjarmasin.
Nurhasnawati, H., Sukarmi, S., and Handayani, F., (2017), Perbandingan Metode Ekstraksi Maserasi dan Sokletasi terhadap Aktivitas Antioksidan Ekstrak Etanol Daun Jambu bol (Syzygium malaccense L.), 3(1), pp. 91-95.
Rahimah, S.B., Djunaedi, D.D., Soeroto, A.Y., and Bisri, T., (2019). The Phytochemical Screening, Total Phenolic Contents and Antioxidant Activities in Vitro of White Oyster Mushroom (Pleurotus Ostreatus) Preparations, Open Access Macedonia Journal of Medical Sciences, 7(15), pp.2404-2412.
Rauf, A.A., and Saranani, S. (2023). Penetapan Kadar Polifenol Total dan Tanin Total dari Ekstrak Etanol Buah Senggani (Melastoma malabathricum L.) serta Uji Aktivitas Antioksidan dengan Metode ABTS. Jurnal Pharmacia Mandala Waluya, 2(6), pp. 295–304.
Reo, A.R., Berhimpon, S., and Montolalu, R., (2017), Secondary Metabolites of Gorgonia, Paramuricea Clavata, Jurnal Ilmiah Platax, 5(1), pp. 42–48.
Ridwanuloh, D., and Mursal, I.L.P. (2018). Isolasi Metabolit Sekunder dari Daun Kawista (Limonia acidissima L.). Pharma Xplore: Jurnal Ilmiah Farmasi, 3(1), pp. 159-163.
Safitri, I., Nuria, M.C., & Puspitasari, A.D., (2018), Perbandingan Kadar Flavonoid dan Fenolik Total Ekstrak Metanol Daun Beluntas (Pluchea Indica L.) pada Berbagai Macam Ekstraksi, Jurnal Inovasi Teknik Kimia, 3(1), pp. 31–36.
Syamsudin, S., Alimuddin, A.H., & Sitorus, B., (2022), Isolasi dan Karakterisasi Senyawa Fenolik dari Daun Putat (Planchonia Valida Blume), Indonesian Journal Of Pure And Applied Chemistry, 5(2), 85-98.
Verawati, V., Nofiandi, D., & Petmawati, P., (2017), Pengaruh Metode Ekstraksi terhadap Kadar Fenolat Total dan Aktivitas Antioksidan Daun Salam (Syzygium polyanthum (Wight) Walp.), Jurnal Katalisator, 2(2), pp. 53–60.
Yudistirani, S.A., & Islam., M.B. (2019), Metode Ekstraksi untuk Perolehan Kandungan Flavonoid Tertinggi dari Ekstrak Daun Kelor’. Jurnal Konversi. 8(2), pp. 31–35.