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Journal : Interdisciplinary Social Studies

Antibacterial Activity Test of Lerak Fruit Extract (Sapindus rarak DC.) Against the Growth of the Bacterist Streptococcus Mutans Risnawati, Risnawati; Sari, Kartika
Interdisciplinary Social Studies Vol. 5 No. 2 (2026): Interdisciplinary Social Studies
Publisher : International Journal Labs

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55324/iss.v5i2.1045

Abstract

Lerak (Sapindus rarak DC.) is a plant native to Southeast Asia that grows well in Indonesia, especially in Sumatra and Java. Lerak is traditionally used as a laundry detergent, facial soap, insect repellent, and fungus repellent. Lerak contains phytochemical compounds that function as antibacterials. This study aims to test the antibacterial activity of lerak fruit extract against Streptococcus mutans bacteria, which cause dental caries. The method in this study involves preparing lerak fruit extract by maceration using 70% ethanol solvent and conducting an inhibition zone test using the diffusion method. Based on the test results, the lerak fruit extract is positive for alkaloids, flavonoids, tannins, saponins, and terpenoids. The results also showed that increasing the concentration of lerak fruit extract produced a wider inhibition zone. The average inhibition zones at concentrations of 25%, 50%, and 100% were 8.83 ± 0.958 mm, 11.78 ± 3.081 mm, and 12.14 ± 0.918 mm, respectively. The novelty of this research lies in the comprehensive evaluation of lerak fruit extract's antibacterial potency against S. mutans using systematic concentration gradients, which has not been extensively documented in previous literature. This study provides practical implications, as lerak fruit extract demonstrates potential as an alternative natural antibacterial agent for oral health applications, offering a safer option with fewer side effects compared to synthetic chemical compounds. However, this study is limited to in vitro testing against a single bacterial strain, and further research is needed to evaluate its efficacy in clinical settings and against polymicrobial oral biofilms.
Co-Authors Abda Abda Adha, Fauzia Aulia Adi Heri Afifah, Irma Afriani Afriani Agestianti, Ruth Agung Bambang Setio Utomo Agustia, Yesi Agustin, Khairunnisa Akmal Junaidi Akyun, Suri Alawiyah, Isnaini Alindra, Afridha Laily Amalia Rahmawati Aminuddin, Jamrud Ananda, Muharam Rizqi Anggia, Yosi Anjeli Kusuma Wijayanti Anna Mardiana Handayani Annisa Amalia Annisa Annisa Apriyadi, Rimbawan Arum Sulistyani Asmukyati, Yati Asyriah, Nor Aulia, Muhammad Avizza, Pinkan Ledy Ayu, Putri Azhari, Ichwan Azian M. Safan Azmi Islami A’yun, Nidha Aulia Qurrata Bilalodin Bilalodin Budi Utomo, Agung Bambang Candrasuari, Ni Luh Putu Diah Ayu Dahlia Dahlia Dari, Qorinah Wulan DEWI SARTIKA Dina Djati , Leryza Audryna Dwi Handayani Dwi Yuniar Billy Canser Edi Surya, Edi Emmawati, Aswita ENDANG SUSANTINI Eppang, Yudiarsi Era Sonita Evi Yulianti Fakikhah, Dila Toebatul faradina, Syarifah Firdaus, Delpa Fitriani, Novi Frischila Barnabas , Yuni Hadarah Halifah , Rofikoh Hamka Hamka, Hamka Hanandhya, Mahira Imtinan Harnia, Afsha Hasna Heryn Mandala Putri Hidayat, Raisa Khaira I WAYAN SUMARJAYA Iman, Alfiyah Zhafirah Indah Emilia Wijayanti Indriati, Marlinda Irawan Isfaizah ISHAK Ishak, Maulana ISKANDAR Isnen, Yazid Zainur Istikomah Izziah, Putri Jatmiko Susilo Jazaul Husna Joni, Yefri Junaidi, Win Juriana Juriana Khaerunnisa, Hanie Khoryanton, Ampala Kiki Wahyuni Kms. Muhammad Amin Fauzi L. Tobing, Rangga Labibah, Nitha Nasywa Lely Safrina, Lely Lestari, Nurul Khofifah Lintang Wening Pembayun Lumban Toruan, Parmin Mardiansah, Rifki Marjohan, Masno Marlina Ekawaty Marmawi R . Marnila Marty Mawarpury Maulida Rachmawati Maulidina, Rifatul Maya Khairani Ma’arif, Iin Baroroh Meishanti, Ospa Pea Yuanita Mifta Nurul Rosyidah Miftakhur Rohmah, Miftakhur Muhammad Ihsan Mulfira firnanda Munawar Ismail Munawwarah, Hidayati Musyarofah, Anna muwaffaq, Abiyyu Sayyid Nabella, Rihana Sofie Nabella, Rihana Sofie Nabella Nabila, Syifa Nabila, Viska Aisyah Nabilah, Azmi Nafira, Annisa Nakisoma, Irene Ni Ketut Tari Tastrawati Nita Amalia Nur Azizah Novita Sari Nur Rahmawati Nurdina Rasjid Nurhaliza, Yunia Nurjihan, Tara Nurmala, Riska Nurriezqa, Aisyah Eldwina Nurul Badriyah Nur’aisyah, Salsadilla Siti Oryza Sativa Pajar Praktino, Budi Purwanti, Rizki Putri Dahlia Febiyola Putri Soraiya, Putri Putri, Rossanita Truelovin Hadi Radeetha, Radeetha Rafii Nur Fauzan, Muhammad Rafii Rahim, Irwan Ridwan Rahma, Aulia Fathiya Rahmawan, Arif Rahmawati, Syafia Amanda Rahmi Hidayati Rangkuti, Ilhan Rayfatsyah Ratna Dewi Rialdi, Azzahra Putri Rianti, Ulfa Ridwan, Irwan Rina Mardiana Rini Susanti Rinie Pratiwi Puspitawati Risana Rachmatan Risnawati Risnawati Rizky Maulana, Rizky Rohmaniyah, Rohmaniyah Rosmana, Primanita Sholihah Rosmiati , Meiti Rosy Hutami Rusli Yusuf Ruswan, Acep Safan, Azian M. Sampurnaningsih, Sri Retnaning Saputra, Wahyudi Deka Saragih, Emi Juwita Sari, Adinda Fuspita Septian, Tegar Tri Setiabudi , Angga Setiawan, Feri Setyaningsih, Istianah Setyo Tri Wahyudi Sholehurrohman, Ridho Siswadi Siswadi Siti Haryani Siti Nur Hidayah, Siti Nur Siti Sarah, Siti Sitti Hijraini Nur Solly Aryza Subarno Subarno, Subarno Sugiarti, Endang Suhardi Sujati, Heronemus Sulasmi Sulasmi Sunardi Sunardi susanti, septria Suyida, Nasywa Alifah Swe, Zin Aung Syarifah Syarifah, Syarifah T. Lando, Asiyanthi Tanjung, Zakiatul Hasanah Taweesan, Achara Tedy Rismawan Tomana, Josef Tria Anggraini , Yessa Tutuk Ningsih Wahyu Kurniawati Wardhani, Neng Sri Warso Warso, Warso wati, Hasnidar Wildan Mubarok, Wildan Wildansyah lubis, Wildansyah Winara Winara Wulpiah Zaujatul Amna, Zaujatul Zayarati, Mehdi Tanha Zikriyah