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ISOLATION OF LACTIC ACID BACTERIA FROM VANAME SHRIMP (Litopenaeus vannamei) AND ITS ANTAGONISM TO PATHOGEN BACTERIA Sufaidah, Siti Nur; Nursyirwani, Nursyirwani; Feliatra, Feliatra
Asian Journal of Aquatic Sciences Vol. 7 No. 1 (2024): April
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

Abstract

Vaname shrimp is one of Indonesia's leading export species and is widely cultivated. The main problem in vaname shrimp pond cultivation is the attack of shrimp diseases caused by bacteria or viruses. This study aims to isolate and identify lactic acid bacteria (BAL) from vaname shrimp (Litopenaeus vannamei) and test their antagonism against pathogenic bacteria. The research was conducted from February to April 2023. The method used in this study is a survey method. Sampling was conducted at the vaname shrimp pond of the Fisheries Service Task Unit (UPT), Tanjung Punak Village, Rupat Utara District, Bengkalis Regency, Riau. The method used in this research was a survey method. BAL was isolated using MRS Agar + CaCO3 media. The Kirby-Bauer method was used to test bacterial antagonism against pathogenic bacteria. Based on the identification of seven isolates, it was found that only four isolates were positively identified as LAB bacteria, namely 47D, 54T1, 73DB1, and 73BD2. The results of the antagonism test against pathogenic bacteria showed that all BAL isolates could not suppress the growth of E. coli bacteria. However, these isolates suppressed the growth of A. hydrophila bacteria, with the widest inhibition zone diameter on isolate 54T1 (4.2 mm). On Vibrio sp. bacteria, the widest inhibition zone of BAL was on isolate 73DB1 (6 mm). These results indicate that the antibacterial activity produced by BAL is still relatively weak.
BIOMASS PRODUCTION AND SINGLE-CELL PROTEIN (SCP) ENCAPSULATION OF BACTERIA Bacillus cereus SN7 Mukramin, Ibnu; Feliatra, Feliatra; Tanjung, Afrizal
Asian Journal of Aquatic Sciences Vol. 7 No. 1 (2024): April
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

Abstract

Bacillus cereus SN7 is a bacterium with potential applications in producing Single-Cell Protein (SCP). SCP can be an alternative to protein derived from traditional sources like agriculture, fisheries, and animal husbandry. Encapsulation is a process used to stabilize cells, aiming to potentially enhance probiotics' viability and stability throughout production, storage, and handling. This study aims to make capsules from B. cereus SN7 single-cell protein to protect them from contaminants. This study used a survey method, which carried out in-situ processing of bacteria, as well as conducting experiments on the formation of bacterial encapsulation, testing the effectiveness of encapsulation, and observing the viability of B. cereus SN7 bacteria by counting the number of colonies. B. cereus produced biomass with a total dry weight of 1.3708 g/mL. The alginate encapsulation experiments can be formed into capsule beads that protect bacteria. The best encapsulation process is an alginate-based coating, which is indicated by the ability of the alginate to withstand temperature, pH, and salinity.
ABILITY OF AMILOLYTIC BACTERIA (Bacillus paramycoides AND Enterobacter cloacae) IN DEGRADING ORGANIC MATERIALS OF MANGROVE LITTLE Putri, Redila; Nursyirwani, Nursyirwani; Feliatra, Feliatra
Asian Journal of Aquatic Sciences Vol. 4 No. 2 (2021): August
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

Abstract

This study aims to find out that Bacillus paramycoides and Enterobacter cloacae bacteria can produce amylase enzymes and have the ability to degrade organic matter, especially mangrove litter. From this study it was found that the optimal growth of B.paramycoides and E. cloacae bacteria occurred at 12th hour. The results of measurements and calculations of absorbance values ​​at 630 10.238 x 108 cells/mL (B. paramycoides) and 12.030 x 108 cells/mL (E. cloacae) using the spectrophotometric method. Meanwhile, with the TPC method at 12 hours, the number of bacterial cells was 2.08 x 108 CFU's/mL (B.paramycoides) and 2.44 x 108 CFU's/mL (E. cloacae). The ability to produce the largest amylolytic bacterial amylase enzyme also occurred at 12 hours as much as 0.306 mg/mL (B.paramycoides) with an increase of 0.046 mg/mL and 0.243 mg/mL (E. cloacae) with an increase of 0.028 mg/mL. The bacteria that have the highest amylase enzyme ability is E.cloacae as evidenced by the diameter of the clear zone of 10.10 mm. Testing the ability of amylolytic bacteria in degrading mangrove litter was carried out by adding amylase enzyme as much as 0%, 50% and 100%. Amylolytic bacteria can degrade organic matter by hydrolyzing starch contained in mangrove litter. The most degraded starch content was in the 100% enzyme treatment, which was 1.021 mg/mL (B. paramycoides) and 1.189 mg/mL (E.cloacae).
OPTIMIZATION OF Bacillus cereus GROWTH IN MEDIA WITH DIFFERENT CARBON SOURCES Putra, Muhammad; Feliatra, Feliatra; Effendi, Irwan
Asian Journal of Aquatic Sciences Vol. 4 No. 3 (2021): December
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

Abstract

Bacillus cereus is a probiotic bacteria that requires media as a source of nutrients for its growth. This study aims to the media used were tofu liquid waste, sago liquid waste, and molasses. The method used is an experimental method, namely testing two groups of bacterial isolates; B. cereus SN7 and the consortium (combination of five isolates from B.cereus with different strains). Each group of isolates was grown with three replications on each waste medium. bacterial growth every six hours for twenty four hours using two methods; Total Plate Count (TPC) and bacterial cell biomass. There was no significant difference in growth between the two groups of bacterial isolation. The optimal growth of each isolate was found in molasses waste. The growth between two bacterial isolates in the liquid waste media was B. cereus SN7 bacterial isolate.
Analysis of the Level of Abrasion on the Coast of Bukit Batu Sub-District, Bengkalis Regency, Riau Paramita, Elisa; Rifardi, Rifardi; Feliatra, Feliatra
Jurnal Perikanan dan Kelautan Vol. 27 No. 3 (2022): October
Publisher : Fakultas Perikanan dan Kelautan Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

Abstract

The purpose of this study is to determine the rate of shoreline change and the level of abrasion in Bukit Batu District, Bengkalis Regency, Riau Province based on several physical variables in the coastal area. End Point Rate (EPR) is a method that can be used to calculate the rate of shoreline change by displaying transects according to their category (high abrasion, medium abrasion, low abrasion, stable, and accretion). From 1991-2021 there was an abrasion of ±139.71 m equivalent to ±4.65 m/year which mostly occurred in Sukajadi Village and Pangkalan Jambi Village, while accretion of ±27.51 m equivalent to ±1.58 m/year mostly occurred in Pakning Asal Village and Sejangat Village. Moderate abrasion is the predominant type. Sukajadi and Pangkalan Jambi are villages that have experienced high levels of abrasion. The area affected by abrasion has moderate and fast currents as well as coastal protection in the form of mangroves, most of which have been damaged and require repairs. Therefore, the main factors causing the abrasion are thought to be the lack of coastal protection and high-speed currents and waves flowing from the Malacca Strait.
Density of Escherichia coli Bacteria in Blood Clams (Anadara granosa) in Anak Setatah Village, Meranti Islands Regency, Riau Rahmanda, Melysa; Feliatra, Feliatra; Nursyirwani, Nursyirwani
Jurnal Perikanan dan Kelautan Vol. 30 No. 2 (2025): June
Publisher : Fakultas Perikanan dan Kelautan Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jpk.30.2.212-218

Abstract

Blood clams are soft-bodied animals that live sessile and obtain food by filtering (filter feeders). This results in many microorganisms accumulating in the body of the blood clams, one of which is the coliform bacteria group. Coliform bacteria are divided into two types, namely fecal coliform and non-fecal coliform. Fecal coliform comes from animal and human feces, such as Escherichia coli. According to SNI 01-7388-2009, the MPN value of E. coli bacteria for fresh Mollusca, Crustaceans, and Echinodermata is <3/g. This study aimed to calculate the density of E. coli bacteria in blood clams. This study was conducted from December 2024 to February 2025. Sampling was conducted at the lowest ebb with one transect consisting of 3 plots measuring 1 × 1m². The MPN method is a method for analyzing coliform bacteria and E. coli. The results of the estimation test obtained at station 1, namely the Tebing Dian Beach Area, ranged from 7-10 MPN/g with an average of 12.6 MPN/g and station 2, namely the "Cinta Mangrove" Tourism Area, ranged from 4-15 MPN/g with an average of 10 MPN/g. While the results of the estimation test obtained at station 1 ranged from 3-4 MPN/g with an average of 2.3 MPN/g, stations 2 ranged from 3 MPN/g with an average of 1.0 MPN/g. These results indicate that the abundance of E. coli bacteria in blood clams does not exceed the quality standards set based on SNI 01-7388-2009
Analysis of the Level of Abrasion on the Coast of Bukit Batu Sub-District, Bengkalis Regency, Riau Paramita, Elisa; Rifardi, Rifardi; Feliatra, Feliatra
Jurnal Perikanan dan Kelautan Vol. 27 No. 3 (2022): October
Publisher : Fakultas Perikanan dan Kelautan Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

Abstract

The purpose of this study is to determine the rate of shoreline change and the level of abrasion in Bukit Batu District, Bengkalis Regency, Riau Province based on several physical variables in the coastal area. End Point Rate (EPR) is a method that can be used to calculate the rate of shoreline change by displaying transects according to their category (high abrasion, medium abrasion, low abrasion, stable, and accretion). From 1991-2021 there was an abrasion of ±139.71 m equivalent to ±4.65 m/year which mostly occurred in Sukajadi Village and Pangkalan Jambi Village, while accretion of ±27.51 m equivalent to ±1.58 m/year mostly occurred in Pakning Asal Village and Sejangat Village. Moderate abrasion is the predominant type. Sukajadi and Pangkalan Jambi are villages that have experienced high levels of abrasion. The area affected by abrasion has moderate and fast currents as well as coastal protection in the form of mangroves, most of which have been damaged and require repairs. Therefore, the main factors causing the abrasion are thought to be the lack of coastal protection and high-speed currents and waves flowing from the Malacca Strait.
Density of Escherichia coli Bacteria in Blood Clams (Anadara granosa) in Anak Setatah Village, Meranti Islands Regency, Riau Rahmanda, Melysa; Feliatra, Feliatra; Nursyirwani, Nursyirwani
Jurnal Perikanan dan Kelautan Vol. 30 No. 2 (2025): June
Publisher : Fakultas Perikanan dan Kelautan Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jpk.30.2.212-218

Abstract

Blood clams are soft-bodied animals that live sessile and obtain food by filtering (filter feeders). This results in many microorganisms accumulating in the body of the blood clams, one of which is the coliform bacteria group. Coliform bacteria are divided into two types, namely fecal coliform and non-fecal coliform. Fecal coliform comes from animal and human feces, such as Escherichia coli. According to SNI 01-7388-2009, the MPN value of E. coli bacteria for fresh Mollusca, Crustaceans, and Echinodermata is <3/g. This study aimed to calculate the density of E. coli bacteria in blood clams. This study was conducted from December 2024 to February 2025. Sampling was conducted at the lowest ebb with one transect consisting of 3 plots measuring 1 × 1m². The MPN method is a method for analyzing coliform bacteria and E. coli. The results of the estimation test obtained at station 1, namely the Tebing Dian Beach Area, ranged from 7-10 MPN/g with an average of 12.6 MPN/g and station 2, namely the "Cinta Mangrove" Tourism Area, ranged from 4-15 MPN/g with an average of 10 MPN/g. While the results of the estimation test obtained at station 1 ranged from 3-4 MPN/g with an average of 2.3 MPN/g, stations 2 ranged from 3 MPN/g with an average of 1.0 MPN/g. These results indicate that the abundance of E. coli bacteria in blood clams does not exceed the quality standards set based on SNI 01-7388-2009
ISOLATION AND IDENTIFICATION OF MICROPLASTIC DEGRADING BACTERIA IN THE APHOTIC ZONE IN BAGANSIAPIAPI WATERS, RIAU Bachar, Sutan; Feliatra, Feliatra; Nursyirwani, Nursyirwani
Asian Journal of Aquatic Sciences Vol. 8 No. 2 (2025): August
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ajoas.8.2.193-202

Abstract

This study aims to isolate and identify microplastic-degrading bacteria from the aphotic zone in Bagansiapiapi waters, Riau Province. Seawater samples were taken from three different stations, namely the port area, the fisheries area, and the Rokan River estuary. Water quality parameters such as temperature, salinity, pH, current speed, brightness, and dissolved oxygen were measured to support environmental analysis. The method used in this study was a survey method, and the sampling location was around the Bagansiapiapi waters, Riau Province. A total of 9 samples were then taken to the laboratory for isolation and identification of microplastic-degrading bacteria. Bacterial isolation was carried out using Zobell Marine Agar media, morphological characterization and biochemical tests. The isolation results obtained 11 bacterial isolates with different morphological characteristics. The microplastic degradation test showed that three isolates, namely ISL1, ISL3, and ISL9, could degrade microplastics, with ISL1 showing a degradation percentage of 9.45%. Molecular analysis using 16S rRNA and BLAST techniques showed that the ISL1 isolate had a similarity of 99.93% with Stutzerimonas stutzeri. These results indicate the potential of native bacteria from the aphotic zone to be used in bioremediation efforts for microplastic pollution in waters
ISOLATION AND IDENTIFICATION OF DEGRADING BACTERIA MICROPLASTICS ON THE SURFACE WATER IN BAGANSIAPIAPI WATERS, RIAU PROVINCE Wulandari, Aprilia; Nursyirwani, Nursyirwani; Feliatra, Feliatra
Asian Journal of Aquatic Sciences Vol. 8 No. 2 (2025): August
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ajoas.8.2.258-267

Abstract

Microplastic pollution in the marine environment seriously threatens aquatic ecosystems, including in the coastal areas of Bagansiapiapi, Riau Province. This study aims to isolate and identify microplastic-degrading bacteria from the sea surface and test their degradation ability. Sampling was carried out at three different locations in the Bagansiapiapi waters, and then isolation, morphological identification, and biochemical tests were carried out at the Marine Microbiology Laboratory, Universitas Riau. Microplastic degradation tests using LDPE plastic were carried out for 30 days, and molecular identification was carried out using the 16S rRNA PCR method. The results showed significant differences in the number of bacteria between stations. Station I (port area) showed the highest bacterial density of 31.8 × 10⁴ CFU/ml. Six of the 14 bacterial isolates obtained showed the ability to degrade microplastics, with ISL 14 (Bacillus sp.) showing the highest degradation percentage of 30.38%. This finding shows the potential for utilizing local bacteria as bioremediation agents for microplastics in the marine environment effectively and environmentally friendly
Co-Authors ', Baihakki A. Momang Yusuf A.J. Patandean AA Sudharmawan, AA Aan Deni Masrudy Abd. Rasyid Syamsuri Abdul Hadi Abdul Halim Talli Abdul Haris Adid A Hermansyah Adli Abdullah, Muhammad Adolf Hiskia Nainggolan Afifah, Zulfa Afriansyah Anca Afrizal Tanjung Agung EBW Agus Sevtiana Agustinus R. Uria Ahmad Asyrofi Ahmad Asyrofi, Ahmad Ahmad Yani Aini, Vera Nur Ainul Ghurri Alberto Taolin Aldri Frinaldi Alfarisy, M. Phyto Almahmudy, Muhammad Naufal Alviccenia Lailatul Mukaromah Aminatul Farihah Anak Agung Istri Sri Wiadnyani Anas Anas, Anas Anas Zubair, Anas Andi Ahmar Ihwal Ikhsan Andi Dahliaty Andrei Putra Zirma Andrito, Wahyudi Anggi Rohita Anggun Meita Anggraini Anisa Qoriman Anita R Sidabutar Anita Rachmasari S.W. Anto Budi Listyawan Apriliani Indrawati Putri Apriyola, Nadya Ari yanto rama doni Arief Widodo Arif Rahman Bachar, Sutan Bagus Dwi Hari Setyono Batubara, Ummi Mardhiah Bintal Amin Birmanti Setia Utami Buchari Buchari Bustari Hasan Cokorda Istri Raka Marsiti Cut Murzalina Cut Zahara Phoenna Dahliaty, Andy Damar Adhiguna Daulay, Anita Diah Permata Sari Defa Jeni Nariswari, Defa Jeni Desi Anggreni Dessy Yoswaty Dessy Yoswaty Devi Ambarwaty Oktavia Devi Ambarwaty Oktavia Devi Irma Sucia Ningtyas Dewan Pratama Novian Dewi Musawwanah Dewi S. Zilda Dewi Sujani Adithiya Dewi, Shinta Rafida Dharmaputra Palekahelu Dian Agung Wicaksono Dian Iriani Dini Suwandari Diva Cicilya Nunki Arun Sudibya Diva Cicilya Nunki Arun Sudibya, Diva Cicilya Djoko Mursinto, Djoko Dora Darussalam Eka Ahadiyat Suryana Eka Ardhianto Elisa Paramita Ema Komalasari, Ema Epta Dian, Ni Kadek Ayu Erlangga Andi S ERMAN ERMAN Euis Sri Damayanti Euis Sri Damayanti Eza Buana Fatwa Eza Buana Fatwa Fatmanita Fatmanita Ferenza, Oktovalen Fitri Widiantini Fitriyani, Fara Ghazali, Tengku Muhammad Gustina, Julia Gustina, Lenny Hafid Abdullah Hafid Hafid Hana Ilmi Khoiriyah Handayani, Sunita Hanif Muchdatul Ayunda Hanifah Yusuf Hariyono, Widodo Hartaman, Nursaleh Hasan, Fitri Utami Hasyimi, Wahid Hayani Anastasia Hendra Adi Prasetya Heru Noviat Herdata Hilyati Fadhlah I Wayan Hendra Saputra I Wayan Supardi Ibnu Khaldun Ida Ayu Putu Hemy Ekayani Iesje Lukistyowati Iesje Lukistyowati Iesje Lukystiowati Ilham Fajri Pohan Intan R Mutiaz Irfan Dwidja Priyambada, Irfan Dwidja Irvina Nurachmi Irwan Effendi Irwan Irwan Ismail Abdurrahman Siregar Jasanta Peranginangin Joni Dwi Pribadi Joni Dwi Pribadi Junaidi, Muhammad Kaharuddin Arafah Kamsinah Kamsinah Karnila, Rahman Karnila Kartika Indah Permanasari Kartika Yuliari Ketut Aswata Khotibul Umam Kristin Wahyuningsih Kristin Wahyuningsih, Kristin Kumala Dewi Kurniati Laksono Trisnantoro Lamun Batara Layla Tun Nur Lazuardi Lazuardi Lidia Dinawati Lora Lestari Lubis Lora Lestari Lubis Lukystyowati, Isye M, Godras Jati Made Agus Nurjana Made Vivi Oviantari Mardalisa, Mardalisa MARIA BINTANG Mariska Lauterboom Marpaung, Franky Hadinata Masdini, Alvira Mayda Susana Meliza Rahmi Moch. Cahyo Sucipto Mochamad Solikhin Mohamad Thahir Haning Mojang Al Mukaromah Muhammad Agus Muljanto Muhammad Fuad Zaini Muhammad Isa Muhammad Muhammad Muhammad Nur Sahid Muhammad Setya Pratama Muhammad Taufan Mukramin, Ibnu Muliana Muliana MUSLIMIN IBRAHIM Mutiara Naimi Nasution Muttaqin Mansur, Teuku Nadhia Agustina Nanang Tri Prastyo Nasrullah Nasrullah Nasution, Mutiara Naimi Ni Nyoman Veridiana Ni Putu Nita Anggraini Nia M. Kurnia Nittaya Chaiyanate, Nittaya Nobelina Adicondro Nobelina Adicondro Nofriyani Nofriyani Noladhi Wicaksana Nono Carsono Nosilia Fristiani Nur Aisah Amini Nur Indrayati Nur Indar Nurfauziah, Suci Nurmalita Putri Nugrahena Nursit Wijayanto Nursyirwani, Nursyirwani Nursyiwani Nursyiwani Nurzamli Nurzamli Nyoman Wendri Oktovalen Ferenza P Purwanto Paramita, Elisa Pertiwi, Fenti Dewi Pipin Kurnia Pipin Kurnia Popy Wardani Prasetya, Hendra Adi Purwoko, Agus Putra, I Ketut Suanjaya Adi Putra, Muhammad Putra, Muhammad Hendra Putri Ayu Putri, Redila Putri, Redila Aprilivia Rahmanda, Melysa Ranap Junani Sari Rena Feri Wijayanti Rena Feri Wijayanti Rendy Lani Dinata Rezki Aitul Hukmi Rifa Fauzi Rosmerry Rifaldi Rifaldi, Rifaldi Rifardi Rini Darmastuti Rintawati Sandradewi, Rintawati Riski Gusri Utami Rizki Hamdani Rohula Utami Rozi Rudiana Agustini Rumanintya Lisaria Putri Ruslan L S.Pd. M Kes I Ketut Sudiana . Sahrullah Sahrullah Santosa Santosa Santri Chintia Purba sari hodijah Sartika Hutasuhut Seprianto, Seprianto Shaumi, Nurul Shinta M Trivena Shinta Maharani Trivena Sila Silalahi Siswa Setyahadi Sitti Chadijah Situmorang, Adrian Slamet Santoso Sophia Rahmah Saleha Subaer Subaer Sufaidah, Siti Nur Sugiyarto Sugiyarto Sugiyarto Sugiyarto Suharmanto Suharmanto Sulaiman Yusuf Sulaiman, Sulaiman Syafruddin Haris Syafruddin Nasution Syahdan, St Syahril Nedi Syaputry Lita Yanti Syarifah Rohaya Tantri Analisawati Sudarsono Teguh Stiyawan Tengku Muhammad Ghazali Thamrin Wikanta Titania Tjandrawati Nugroho Titik Sumarti Treesia Sujana Tri A. Hadi Tri Emrinelson TRI PRANADJI Tri Winarni Tri Yulistyawati Evelina Tri Yulistyawati Evelina Usman Usman Wahyuda Hidayat Whitea Yasmine Slamet Widantari, Meilya widyaningrum, Astri WULANDARI, APRILIA Y Hutasoit, Anjeli Yayi Suryo Prabandari Yuana Nurulita Yudi Kusnadi Yuni Fitria Yusak Maryunianta Yuslina Octavia Yusni Ikhwan Siregar Yusril Has Yusrizal Yusrizal YUYUN SRIKANDI Zainuri -, Zainuri Zebua, Abdi Hikmat Petra Zevira, Bella Permata Zhilalul Huda