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Journal : Bioscientist : Jurnal Ilmiah Biologi

Aktivitas Antibakteri Ekstrak Etanol Daun Kitolod (Isotoma longiflora) terhadap Bakteri Vibrio sp. Penyebab Vibriosis pada Udang Vaname (Litopenaeus vannamei) Sari Hidayati; Salnida Yuniarti Lumbessy; Fariq Azhar
Bioscientist : Jurnal Ilmiah Biologi Vol 9, No 1 (2021): June
Publisher : Department of Biology Education, FSTT, Mandalika University of Education, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/bjib.v9i1.3557

Abstract

The purpose of this study was to determine the effectiveness of the ethanol extract of kitolod leaves is active against Vibrio sp. that causing vibriosis in vaname shrimp by in vitro method. Kitolod leaf extract was made using maceration method with 96% ethanol as solvent. Kitolod leaf ethanol extract was analyzed by GC-MS. Antibacterial testing using the disk diffusion method used 4 concentration variations, namely: 12.5%, 25%, 50%, and 100% against 3 types of Vibrio sp. bacteria, namely: Vibrio harveyi, Vibrio parahaemolyticus, and Vibrio alginolyticus. The antibiotic rifampicin was used as a positive control, and aquades as a negative control. This study used a factorial Completely Randomized Design (CRD) with 3 replications. The results of characterization and identification by GC-MS showed the presence of an active compound of phthalic acid in the ethanol extract of kitolod leaves. Kitolod leaf extract 25%, 50%, and 100% had the same ability to inhibit the growth of Vibrio alginolyticus. Kitolod leaf extract 50% and 100% had the same ability to inhibit Vibrio harveyi and kitolod leaf extract 100% had a better ability to inhibit the growth of Vibrio parahaemolyticus.
Substitusi Tepung Rumput Laut Eucheuma striatum pada Pakan Ikan Nila (Oreochromis niloticus) Alamanda Juwita Putri; Salnida Yuniarti Lumbessy; Dewi Putri Lestari
Bioscientist : Jurnal Ilmiah Biologi Vol 9, No 2 (2021): December
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.v9i2.3972

Abstract

Feed is one of the most influential factors on the appearance of tilapia productivity. This study aimed to analyze the effect of substitution of fish feed with Eucheuma striatum seaweed meal on the cultivation of Tilapia (Oreochromis. niloticus). This research was conducted at the Laboratory of Aquaculture Study Program, Faculty of Agriculture, Mataram University. The method used in this study was a completely randomized design (CRD), which consisted of 4 treatments with 3 replications, ie: control (P1), concentration of 4% seaweed flour (P2), concentration of 8% seaweed flour (P3), and concentration of 12% seaweed flour (P4). The results showed that substitution of fish feed with seaweed meal E. striatum could affect growth and specific growth rate, but did not affect Feed Utilization Efficiency (EPP), Feed Conversion Ratio (FCR), and Survival Rate (SR) of Tilapia. Fortification of E. striatum flour at concentrations of 4% and 8% in feed gave better absolute and specific weight growth of Tilapia, while the best absolute length growth was found in the addition of 8% E. striatum flour, which was 2.26 cm.
Co-Authors Abidin, Z Agus Hermansyah AGUS ROHYADI Ahmad Fauzi Ahmad Nawawi Alamanda Juwita Putri Andre Rachmat Scabra Anggi Fara Subhi Anisa Sofiana Anov Ersantyo Pratama Ayu Adhita Damayanti Azmin Niza Bagus Ansani Takwin Bagus Dwi Hari Setyono Bagus Dwi Hari Setyono Baiq Hilda Astriana Baiq Rizki Amalia Baiq Sigit Yunita Lestari Bangun Bangun Bryan Setyadi Wibawa Damai Diniariwisan Desi Melanisia Dewi N. Setyowati Dewi Nur'aeni Setyowati Dewi Nur'aeni Setyowati Dewi Nur'aini Setyowati Dewi Nur’aeni Setyowati Dewi Nur’aeni Setyowati Dewi Nur’aeni Setyowati Dewi Nur’aeni Setyowati Dewi Putri Lestari Dewi Putri Lestari Dewi Putri Lestari Dewi Putri Lestari, Dewi Putri Diamahesa, Wastu Ayu Dimas Putra Perdana Dirmansyah Duri Kelao Naria Dwi Elfa Maharani Elmi Patma Insani Erwansyah Erwansyah Fadilah Fadilah Fadlatul Anami Fajratul Fitri Fajrianti Dwi Kurnia Fariq Azhar Fariq Azhar Fariq Azhar Fariq Azhar Fariq Azhar Fariq Azhar Fariq Azhar Fariq Azhar Hasyiati Aini Heriansyah, Andy Hirza Ranggana Husnul Ayu Juniarti I Gusti Agung Komang Diafari Djuni Hartawan Imam Firdaus Irmadiati Irmadiati Irmadiati Irmadiati Laily Fitriani Laily Fitriani Mulyani Lalu Wahyu Wilisetyadi Lalu Wahyu Wilisetyadi Lestari Ujianto Luh Putu Mitha Dhila Endraswari Luh Putu Ratna Sundari Lutfi Danuwari M. Mutawalli Wira Supati Marniati Marniati Megawati Megawati Moh. Awaludin Adam Muhammad Aidil Desta Putra Muhammad Ilham Fasya Muhammad Junaidi Muhammad Junaidi Muhammad Marzuki Muhammad Sumsanto Muhammad Supiandi Mutiara Annisa Dewi Nanda Diniarti Neni Ismaini Ni Kadek Ayu Siptiani Nirma Aprila Erlana Nunik Cokrowati Nunik Cokrowati Nunik Cokrowati Nunik Cokrowati Nuri Muahiddah Nurika Alawyah Riztawati Nurrenze Habmarani Nurul Pratiwi Pandu Abdi Perdana Paryono . Paryono . Perdana, Pandu Abdi Priscilla Josephine Kaitjily Rahmi Sri Ramadhani Raismin Kotta Rangga Idris Affandi Sahrul Alim Sandrayani Sandrayani Santriathan Putri Saptono Waspodo Sari Hidayati Septiana Dwiyanti Septiana Dwiyanti Setyowati, Dewi Nur’aeni Setyowati, Dewi Nur’aeni Sitti Hilyana Soleha, Anisa R. Sri Wahyuni Suhesti Fuji Lestari Sulthon Hamid Faros Naban Thoy Batun Citra Rahmadani Thoy Batun Citra Rahmadani Trisna Agung Pambudi Ujang K.A. Kartamihardja Wida Nurhalisa Wida Nurhalisa Wulan Rahmania Yeni Dwi Yana Yulia Dewi Anjani Yuliana Asri Yuliana Asri Yusni Juniar Letari Zaenal Abidin Zaenal Abidin Zainal Abidin Zuhratul Aini