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Journal : Jurnal Perikanan

THE EFFECTIVENESS OF GREEN SEAWEED (Ulva reticulate) ANTIBACTERIAL COMPOUND EXTRACT ON THE BACTERIA Vibrio parahaemolyticus Anis Zubaidah; Riza Rahman Hakim; Olivia Agustin
Jurnal Perikanan Unram Vol 14 No 4 (2024): JURNAL PERIKANAN
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jp.v14i4.1282

Abstract

Green seaweed (Ulva reticulata) is found in many parts of Indonesia. The potential of green seaweed is not widely known to the public, even though it is considered a parasite on other types of seaweed. The purpose of this study was to determine the antibacterial compounds contained in green seaweed and their effectiveness against Vibrio parahaemolyticus bacteria. Green seaweed was extracted by maceration method and then qualitative and quantitative tests were carried out. After that, the minimum inhibitory concentration test was carried out and continued with the minimum bactericidal concentration test and the inhibition test with 5 treatments and 3 replications. The data from the qualitative and quantitative test of seaweed, the minimum inhibitory concentration and the minimum bactericidal were analyzed descriptively, while the data from the inhibition zone test was analyzed statistically by ANOVA. The results of qualitative and quantitative tests showed that green seaweed contained flavonoids (6.4909 mg/g), tannins (70.7500 mg/g) and saponins (443.7286 mg/g). The results of the minimum inhibitory concentration test showed that the concentration of 3.125% was the minimum concentration to inhibit bacterial growth. In the inhibition test, it can be seen that P4 (6%) is the best treatment. The results of statistical analysis show that the treatments given are significantly different, except that P4 (6%) and P5 (7,5%) are not significantly different. From this study it can be concluded that green seaweed extract is effective in inhibiting the growth of Vibrio parahaemolyticus bacteria.
ESTIMATION OF LEAF-LITTER DECOMPOSITION RATE Avicennia sp. ON THE NUTRIENTS CONTENT IN WONOREJO MANGROVE AREA, SURABAYA Hariyadi, Hariyadi; Hakim, Riza Rahman; Fitri, Ruhul Jihadil
Jurnal Perikanan Unram Vol 15 No 2 (2025): JURNAL PERIKANAN
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jp.v15i2.1457

Abstract

The ecosystems of mangrove are one of the unique coastal ecosystems which have ecological and socio-economic functions. Mangroves have a significant role in supporting fisheries resources. Leaf-litter is a nutrient contributor released to the sea water and is functioned by aquatic biota both in the marine and estuary. The method used in this study is purposive random sampling method which refer to the category based on mangrove density. The average production of mangrove litter Avicennia sp, for 30 days at station I was 1.04 g/m²/ day, station II was 1.20 g/m²/day, station III was 0.75 g/m²/day. The leaf-litter decomposition rate at station I, experienced a decomposition process of 65%, at station II at 62.33%, and station III at 69.42%. The content of nitrogen (N) and fosfor (P) nutrients at station I is an average of N 0.74% and P 0.07%, station II is N 0.76% and P 0.05%, station III is N 0.74% and P 0 , 07%. The total amount of nutrients released in the Mangrove Information Center forest area, Wonorejo - Surabaya is nitrogen (N) 443.81 kg/m²/year and phosphor (P) 34.103 kg/m²/year.
Co-Authors Agista Tsani Untsa Ahmad Jumarding Ahmad Rusyda Hafidhi Albasa Albasa, Ahmad Rusyda Hafidhi Alisatul Amalia Andriyanto Andriyanto Anis Zubaidah Anis Zubaidah Anis Zubaidah Arfida Boedirochminarni Ari Wahyu Darmawan Arinta Agnie Dewantari Artadana, Ida Bagus Made Astuti, Triana Indri Azhari Azhari Bahiyya, Choridatul Budi Setyono Choridatul Bahiyya Dahlia, Lisma Darmawan, Ari Wahyu David Hermawan David Hermawan David Hermawan Dewantari, Arinta Agnie Dianita Wijayanti Ditya, Yoga Candra Dony Prasetyo Erni Indrawati Felix Miranda Fitri, Ruhul Jihadil Ganjar Adhywirawan Sutarjo Ganjar Adhywirawan Sutarjo Gema Wahyudewantoro, Gema Hany Handajani Hariyadi Hariyadi Hariyadi Hariyadi Hariyadi, Hariyadi Hermawan, David Hidayat, Reyhan Rafisyah Indrawan, Rindya Fery Irzal Effendi Ismi, Yuliani Jamhari Jamhari Kholista, Marry Ann Lailiyah, Ummi Badriyatul Lili Zalizar Lisma Dahlia M. Tang Machmud Effendy Machmud Effendy Machmud Effendy Marry Ann Kholista Maulidiya, Nurfitri Miranda, Felix Moh. Nurhuda Mustaqim Mustaqim, Mustaqim Novin Farid Styo Wibowo Nur Subeki Nurfitri Maulidiya Nurhuda, Moh. Olivia Agustin Olivia Agustin Puji Sumarsono Rasyidi, Emil Salim Ridwan Ridwan Rini Mastuti Rogerio Lainus Tilman Sarmento Soni Andriawan Subairi Subairi Suryadewi, Nindya Suwandayani, Beti Istanti Triana Indri Astuti Untsa, Agista Tsani Utomo, Waskito Dwi Warkoyo Warkoyo Waskito Dwi Utomo Wenny Novita Sari Worowirastri E., Dyah Yohana Agustina Yudhistyan Hanif Rahmawan Yuliani Ismi Yus Mochamad Cholily