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Susiana Purwantisari
Biotechnology Laboratory, Departement Of Biology, Faculty Of Science And Mathematics, Diponegoro University
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Antifungal Activity of Noni (Morinda citrifolia) Leaf Extract against Cercospora capsici on Red Curly Chili Pepper (Capsicum annuum) In Vitro Adriano Gunawan; Farah Arhusy Nurbayani; Zian Arikah; Fitra Ari Aditya; Susiana Purwantisari
Bioscientist : Jurnal Ilmiah Biologi Vol. 14 No. 3 (2026): September
Publisher : Department of Biology Education, FSTT, Mandalika University of Education, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/bioscientist.v14i3.22101

Abstract

This study aimed to evaluate the antifungal potential of noni leaf (Morinda citrifolia) extract at different concentrations in inhibiting the growth of Cercospora capsici, the causal agent of leaf spot disease in red curly chili pepper (Capsicum annuum). The study was conducted using a Completely Randomized Design (CRD) consisting of seven treatments, including noni leaf extract at concentrations of 20%, 40%, 60%, 80%, and 100%, a negative control (sterile distilled water), and a positive control (0.1% propineb). The research procedures included purification of the Cercospora capsici isolate, preparation of methanolic noni leaf extract, qualitative screening of secondary metabolites, and an in vitro growth inhibition assay using the poisoned food technique. The inhibition data were analyzed using one-way analysis of variance (ANOVA), followed by Duncan’s Multiple Range Test (DMRT) at a 5% significance level. Qualitative phytochemical screening revealed that noni leaf extract contained alkaloids, phenols, flavonoids, saponins, tannins, and steroids. The inhibition assay showed that the antifungal activity increased with increasing extract concentration. The highest Percentage Inhibition of Radial Growth (PIRG) was observed in the 100% noni leaf extract treatment, with a value of 93.82 ± 0.56%, categorized as very strong inhibition. This value was higher than that of the positive control (0.1% propineb), which exhibited a PIRG value of 47.19 ± 2.52%. These findings indicate that noni leaf extract has strong antifungal activity against Cercospora capsici under in vitro conditions and has potential as a plant-derived antifungal agent. Further studies under in vivo and field conditions are required to confirm its effectiveness in controlling leaf spot disease of red curly chili pepper.
Co-Authors Achmadi Priyatmojo Adriano Gunawan Agus Evendi, Agus Ahmad Arfi Setiadi Ahmad Hanafi Ahmad Thontowi Akbar, Muhammad Falih Amal, Daffa Ikhlasul Amatullah, Lutfiana Hary Ana Bila Nadia Anindya Ardiansari Annisa Dhea Lathifa Anto Budiharjo Arina Tri Lunggani Astriana, Novi Atik Mawarni Azizah, Hana Fitria Bodhicitta Wardaja Budi Raharjo Budi Raharjo Budi Setiyana Budi Setiyana Budihardjo, Kadarwati Chatarina Umbul Wahyuni Choiriyah, Miftahul Dewi Fajar Kharisma Dion, Romario Dwi Handayani Dwi Handayani Eflita Yohana Elvi Yetti, Elvi Farah Arhusy Nurbayani Fikri, Dzakiyya Nabilla Fitra Ari Aditya Fiva Andriyani Govinda Restu Syahputra Hapzi Ali Harum Sitepu Harwika Ria Rizky Agista Hermawan Dwi Ariyanto Hermawan Dwi Ariyanto Herry Wirianata Husna, Faza Laili Ilyas Teguh Pangestu Indriana Putri Inggrit Amedia, Inggrit Kadarwati Budiharjo Karnoto, K Khanifah, Neni Nur Lintang Dian Saraswati M. Arie Wuryanto Mahardhika, Wahyu Aji Martini Martini MG Isworo Rukmi Mohamad Endy Y Yulianto Mufida, Naimatul Muhammad Bismar Iskandar putra Naufal, Mochammad Fa’iq Qoys Noviyanti, Nita Nurbayani, Farah Arhusy Nurul Halwiyah Pangestu, Ilyas Teguh Purwoko, Agus Puspitasari, Elsye Giovanny Rahmadita, Tika Ramadhan, Akhmad Andika Rasyid, Rido Baharudin Ar Rejeki Siti fe Rejeki Siti Ferniah Retno Hestiningsih Retno Peni Sancayaningsih RETNO PENI SANCAYANINGSIH Rina Sri Kasiamdari Ririh Citra Kumalasari, Ririh Citra Risnanda, Meizulfa Ayu Rizka Amalia Rizky Wahyu Saputro Safina, Marista Fikri Irsya Sari, Dyah Maharani Sisya Puspita Sari, Rachel Dewita Sarjana Parman Septa Primananda Sitepu, Harum Siti Nur Jannah Siti Nur Jannah Sofatun Misrofah Sri Pujiyanto Sri Yuliawati Sri Yuliawati Sri Yuliawati Sukarman Sukarman Supriyadi Supriyadi Sutra Diyana Tanjung, Puspasari Noerwan Tanjung, Puspasari Noerwan Tatik Handayani, Tatik Theresia Damayanti Tuti Yuniatun, Tuti Wijanarka Wijanarka Wulandari, Sukma Aulia YOPI YOPI Yudanto, Yusuf Arya Zian Arikah