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Journal : Jurnal Akademika Kimia

Determination of Secondary Metabolites and Antioxidant Activity of Robusta Coffee Bean Ethanol Extract by UV-Vis Spectrophotometry Tandi, Joni; Riani, Ni P. I.; Handayani, Tien W.; Kanan, Maria
Jurnal Akademika Kimia Vol. 12 No. 1 (2023)
Publisher : Universitas Tadulako

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22487/j24775185.2023.v12.i1.pp58-64

Abstract

Robusta coffee beans (Coffea canephora Pierre ex.A.Froehner) have antioxidant, antidiabetic, and antihypertensive effects and can prevent coronary heart disease. This study aims to determine the compound content and total levels of secondary metabolites and to determine the antioxidant activity of robusta coffee bean extract. UV-Vis spectrophotometer was used to determine the total levels of secondary metabolites and antioxidant assay using DPPH reagent. The results obtained for the positive qualitative test contain secondary metabolites of alkaloids, flavonoids, saponins, and tannins and do not contain steroid compounds while for the quantitative test, the total alkaloid content is 0.1973% w/w (caffeine equivalent), flavonoids are 1.2106% w/w (equivalent to quercetin), saponins 0.536% w/w (equivalent to sapogenins), tannins at 9.7103% w/w (equivalent to tannic acid). The IC50 result for the antioxidant activity of the ethanolic extract of robusta coffee beans is 55.16 µg/mL which is included in the category of strong antioxidants.
Co-Authors Afriani S Afrizal Agustinus Widodo Ahmad, Mirnawati Alaydrus, Syafika Alaydus, Syafika Anggi, Viani Anita Purwantari Aril, Moh Asrifa Asrifa Astria, Nani Astuti, Dewi Qurrotul Ayu Martina Ayu Wulandari AYU WULANDARI Azwaajum Mutahharah Basilingan, Aprince Bella Melinda Bengkati, Stely Gracia Cinda Pradita Sudar Claresta, Jong A. Darmayanti David Pakaya David Pakaya Debora Rislianti Lakiu Dewi Astuti Dewi, Alfia Dian S. Waruwu Diana Pratiwi, Franciska Dipayana, I Made Erdy Prasetyo Fahri, Mohammad Fahruddin Fahruddin Faisal Rahmat Nugraha Fajar Alan Fatma, Nurul Feiverin Tibe Gabriella Bamba Ratih Lintin Gusti Ayu Gusti Ayu, Gusti Handayani KR Handayani, Tien W. Handayani, Tien Wahyu Handayani, Tien Wahyuni Harliwong, Dhitania Ivana Hastuti L Ida Yanti Palinggi Intan, Putu Irwan Irwan Islamiati, Utami Jong A. Claresta Kiki Rizki Handayani Kurnia Gatot Novrianto L, Wahyudin H Lakiu, Debora Rislianti Lexy Kareba Lidongi, Putri Marcelita Lina Hardianti Rukmana M, Yulan Magfira Magfirah Magfirah, Magfirah Magfiroh Magfiroh Maria Kanan Mariyani Mariyani, Mariyani Marsella, Mimi Marzela Dewi Meike Rachmawati Merue, Novalia Moh Rizky Moh. Roem Muhammad Agus Muljanto Muthi’ah H Z Muthmainnah, Sririzqi Na'i, Alpina Nadila Nadila Nadila, Nadila Nadira Nani Astria Ni Made Irma Mariani Ni Putu Setiawati Ni Wayan Ika Purwasih Niluh Puspita Dewi Niluh Puspita Dewi Niluh Puspita Dewi Niluh Puspita Dewi, Niluh Puspita Niswatulfahriyati Niswatulfahriyati Nur Azizah Nur Ikhwan Nurhikmah Nurhikmah Nurmadinah Nurmadinah Nurul Ulzmi Ovan Nugroho Pegia Parobe, Alda Iglesias Pasang, Sisilia Baan Polakitan, Grace Lovita Polibaon, Tresya J. Puspita Dewi, Niluh Putri, Debby Aulia R, Yana Novika Rahmawati D Rahmawati Salsa Dinurrosifa Rajadenda, Afwa Al Rasmiyanti, Ni Kadek Evy Recky Patala Rezky Yanuarty Riani, Ni P. I. Riani, Ni Putu Intan Rio Mariani Risna Yanti Rizaldy Lalu Ronaldy Nobertson Rusdi, Grasela Ruterlin, Valen Safitri, Nabila Umi Salsabila, Unik Hanifah Sasdila, Sasdila Seblin Tonapa Rammang Sene, Ikhsan Hi. Amir Solehah, Puput Octaviani Sri Mulyani Sri Mulyani Sri Mulyani Sri Mulyani Sabang Suarsana, I Made Agus Sujati, Ni Wayan Surat, Megawati R. surisna, surisna Syafika Alaydrus Tampang, Rivani Tamunu, Jeine Sweet Natasya Tandy, Putri Adam Tarusu, Fikhta Agnesya Tiara Anastasya Ticoh, Febriyani Tien Wahyu Handayani Tien Wahyu Handayani Tien Wahyu Handayani Tien Wahyu Handayani Tien Wahyu Handayani Tien Wahyu Handayani Tien, Tien Wahyu Handayani Toding, Ficanata Adhiguna Tonapa Rammang, Seblin Towulu, Dessy Gracelia Tuldjanah, Muthmainah Uigianto, Imelda Utami, Indah Kurnia Valen Ruterlin Veronika Veronika Viani Anggi Vidya Christin Wahyu Handayani, Tien Wahyu Nur Afandi WAYAN WAYAN Wirawan W Wirawan, Resky Chandra wirawan, Wayan Yana Novika R Yanti Palinggi, Ida Yanuarty, Rezky Yasinta Rakanita Yuli Fitriana Yuliet Yuliet Yulistien Yusuf Yunlis Silintowe Kenta Yusriadi Yusriadi Yustin Yustin Zulfaidah