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Sri Benti Etika
Universitas Negeri Padang
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Biosorption of Indigo Carmine onto Duck Egg White-Modified Longan Peel Biosorbent: Effect of Particle Size and Contact Time Waarsyat, Fadli; Kurniawati, Desy; Etika, Sri Benti; Sari, Trisna Kumala; Husein, Saddam; Jeningsih; Septian Budiman
EKSAKTA: Berkala Ilmiah Bidang MIPA Vol. 27 No. 02 (2026): Eksakta : Berkala Ilmiah Bidang MIPA (E-ISSN : 2549-7464)
Publisher : Faculty of Mathematics and Natural Sciences (FMIPA), Universitas Negeri Padang, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/eksakta/vol27-iss02/665

Abstract

The increasing demand in the textile industry ideally requires effective wastewater treatment systems to prevent environmental pollution. These pollutants are resistant to degradation and pose serious risks to aquatic ecosystems and human health. To address this issue, sustainable and low-cost treatment methods are urgently needed. Biosorption using agricultural waste has emerged as a promising alternative; however its performance is often limited by insufficient active binding sites. Therefore, surface modification using natural protein sources is proposed to enhance adsorption capacity and efficiency. This study aims to develop and evaluate longan peel modified with duck egg white (LP-DEW) as an eco-friendly biosorbent for indigo carmine removal. The effects of particle size and contact time were investigated, and adsorption kinetics were analyzed using pseudo-first-order, pseudo-second-order, and intraparticle diffusion models. The results showed that LP-DEW exhibited a maximum adsorption capacity of 128.27 mg g-1 at an optimal particle size of 63 μm and equilibrium time of 90 min. The adsorption process followed the pseudo-second-order model, indicating chemisorption as the dominant mechanism. In conclusion, LP-DEW demonstrates high adsorption efficiency and favorable kinetics, highlighting its potential as a sustainable biosorbent for dye-contaminated wastewater treatment.
AKTIVITAS ANTIBAKTERI EKSTRAK ETIL ASETAT JAMUR ENDOFITIK RS-1 DARI TUMBUHAN ANDROGRAPHIS PANICULATA MENGGUNAKAN MEDIA BERAS HITAM Safitri, Salsabila; Etika, Sri Benti; Riga, Riga
Jurnal Zarah Vol. 10 No. 2 (2022): October, 2022
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Maritim Raja Ali Haji

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31629/zarah.v10i2.4591

Abstract

Tumbuhan Andrographis paniculata menghasilkan beragam metabolit sekunder yang memiliki berbagai aktivitas biologis termasuk antibakteri. Senyawa antibakteri pada tumbuhan ini juga dapat diekplorasi dari jamur endofitik yang berasosiasi dengan tumbuhan A. paniculata. Penelitian ini bertujuan untuk mengetahui aktivitas antibakteri jamur endofitik RS-1 dari ranting tumbuhan A. paniculata menggunakan media beras hitam. Tahapan penelitian terdiri dari isolasi, kultivasi, ekstraksi, uji antibakteri dan uji kandungan metabolit sekunder dari jamur endofitik pada ranting tumbuhan A. paniculata. Uji efektivitas aktivitas antibakteri terhadap ekstrak EtOAc jamur endofitik RS-1 menunjukkan bahwa ekstrak jamur RS-1 pada media beras hitam mampu menghambat pertumbuhan tiga bakteri uji pada konsentrasi 1%, 3% dan 5%. Ekstrak EtOAc jamur endofitik RS-1 dari tumbuhan A. paniculata menggunakan media beras hitam mempunyai potensi sebagai sumber senyawa antibakteri.
Co-Authors Alfarisi, Fadil Ananda Putra Andriati Fitria Wati Annisa Dewi Pangestuti Anshar Al Khairi, Varel Anwar Saputra Ayunda, Sarah Bahrizal Bahrizal Budhi Oktavia Budhi Oktavia Citra Devira Deni Marlina Deski Beri Desy Kurniawati Desy Kurniawati Desy Kurniawaty Dewi Fortuna Khairil Dewi Kristina Dwi Finna Syolendra DWI RAMADHANI Edi Nasra Elfanny Delvia Endang Widaya Nengsih Fadhila, Dina Fitri Yuranda Hardianti, Amirah Salsabila Hary Sanjaya Hesty Parbuntari Indah Nulfia Indang Dewata Iryani Iryani Iryani Iryani Iswendi Iswendi Ivana Putri Jeningsih Laura Dwi Rha Hayu Mahmud Mahmud Mahmud Mahmud MARIAM ULFAH ULFAH Melisa Yolanda Minda Azhar Muhammad Farhan Mulia, Melindra Nazulis Z Nivi Suci Kurnia Niza Lian Pernadi Nizar, Umar Kalmar Pernadi, Niza Lian Putri Diana R, Yoanatul Hasanah Rahmi, Fathaniah Raviqa Rani Aulia Suhanah Rani Aulia Suhanah Regi Fadila Putra Revi Ernanda Ridho Hermawan Rido Ardianto Riga Riga Riga, Riga Rini Anggraini Sabrina, Joya Saddam Husein, Saddam Safitri, Salsabila Sari, Trisna Kumala Septian Budiman Sintha Hafizhah Yonel Siska Oktariza Sri Teguh Priharti Sundari, Rita Suryelita . Suryelita, Suryelita Susiyati Safitri Syamsi Aini Teuku Muhamad Khairudin Trisna Kumala Sari Ulfah, Mariam Umar Kalmar Nizar Utami, Esssylia Afriyanti Varel Anshar Al Khairi Vinezia Sri Wahyuni Waarsyat, Fadli Yogi Fernanda Saputra Yulia Rahmatika Yusmaita, Eka Yustini Ma’aruf