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All Journal Journal of Innovation and Applied Technology JFMR (Journal of Fisheries and Marine Research) Journal of Aquaculture and Fish Health
Muhammad Fakhri
Fakultas Perikanan Dan Ilmu Kelautan Universitas Brawijaya
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Computer Science & IT Engineering Environmental Science

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PENGARUH SALINITAS TERHADAP PERTUMBUHAN, BIOMASSA DAN KLOROFIL-a DUNALIELLA SP. Muhammad Fakhri; Arning Wilujeng Ekawati
JFMR (Journal of Fisheries and Marine Research) Vol 4, No 3 (2020): JFMR VOL 4 NO 3
Publisher : JFMR (Journal of Fisheries and Marine Research)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jfmr.2020.004.03.12

Abstract

Dunaliella sp. merupakan mikroalga hijau yang kaya beta karoten dan klorofil, bersifat euryhaline, dan telah banyak dimanfaatkan untuk budidaya ikan dan udang. Salah satu strategi yang dilakukan untuk meningkatkan produktivas mikroalga adalah dengan melakukan optimasi kondisi lingkungan. Salinitas merupakan factor esensial yang mempengaruhi pertumbuhan dan kandungan biokimia Dunaliella. Tujuan penelitian ini adalah untuk menjelaskan pengaruh salinitas yang berbeda dan menentukan salinitas terbaik untuk pertumbuhan, produksi biomassa, dan klorofil-a Dunaliella sp. salinitas yang berbeda yaitu 5 ppt, 15 ppt, 25 ppt, dan 35 ppt digunakan pada penelitian ini. Hasil dari penelitian ini menunjukkan bahwa salinitas yang berbeda berpengaruh terhadap pertumbuhan, produksi biomassa, dan klorofil-a Dunaliella sp. (p<0,05). Salinitas terbaik untuk pertumbuhan, produksi biomassa dan klorofil-a Dunaliella sp. diperoleh pada salinitas 15 ppt yang menghasilkan konsentrasi sel maksimum sebesar 19,86 x 106 sel mL-1, biomassa 0,52 g l-1, dan klorofil-a 11,26 mg/l. Laju pertumbuhan yang tinggi berhubungan dengan biomassa dan kandungan klorofil-a Dunaliella sp. Dapat disimpulkan bahwa salinitas yang berbeda memberikan pengaruh signifikan terhadap pertumbuhan, produksi biomassa, dan klorofil-a Dunaliella sp. Disarankan menggunakan salinitas 15 ppt untuk menghasilkan pertumbuhan, produksi biomassa dan klorofil-a yang optimal.
UTILIZATION OF ARTEMIA IN THE LAMINING OF CAT FISH, Clarias sp. IN KARANG BESUKI URBAN VILLAGE Agoes Soeprijanto; Pratama Deffi Samuel; Muhammad Fakhri
Journal of Innovation and Applied Technology Vol 3, No 2 (2017)
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (897.105 KB) | DOI: 10.21776/ub.jiat.003.02.8

Abstract

AbstractThe main problem in catfish hatchery is low productivity and survival rate (SR). The aim of this work was to evaluate the application of artemia in catfish hatchery. Artemia was administered to 100,000 catfish larvae for 3 days with the total of 602 gr. The results showed that 70,000 catfish juveniles with size of 2-3 cm were obtained under artemia application. The survival rate of this study was 70%. It can concluded that probiotic application was able to improve the survival rate and the feed conversion ratio in catfish culture.       
Growth, Pigment and Protein Production of Spirulina platensis under different Ca(NO3)2 concentrations Muhammad Fakhri; Prive Widya Antika; Arning Wilujeng Ekawati; Nasrullah Bai Arifin
Journal of Aquaculture and Fish Health Vol. 9 No. 1 (2020): JAFH Vol. 9 no. 1 February 2020
Publisher : Department of Aquaculture

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (379.922 KB) | DOI: 10.20473/jafh.v9i1.15769

Abstract

Spirulina platensis is a filamentous cyanobacterium that has been commerically used for fish feed and human food supplement. Low-cost production of Spirulina is needed when considering large-scale culture especially for industrial purposes. The aim of this study was to explain the effect of calcium nitrate (Ca(NO3)2) on growth, biomass, pigment, and protein production of S. platensis and to determine the best calcium nitrate concentration for Spirulina production.The microalgae was cultured at four calcium nitrate concentrations (1, 1.5, 2.0 and 2.5 g/L) with salinity of 15 ppt, constant light intensity of 4,000 lux and photoperiod of 24:0 light:dark cycles for 4 days. The results showed that different calcium nitrate concentrations remarkably affected the growth, biomass production, pigment and protein content of S. platensis (p<0.05). The highest specific growth rate of 0.721 day-1 and biomass concentration of 1.512 g/Lwere achieved at calcium nitrate concentration of 2.5 g/L. Moreover, the algae had the highest chlorophyll-a, carotenoid and protein content at 2.5 g L-1. Increasing calcium nitrate concentration from 1 to 2.5 g/L led to an increase in biomass, pigment and protein production of S. platensis. However, there was no significant difference between 2 and 2.5 g L-1 calcium nitrate concentrations. We suggest that 2-2.5 g/L Ca(NO3)2 concentration can be used profitably for S. platensis production.
Co-Authors Agoes Soeprijanto, Agoes Arning Wilujeng Ekawati Nasrullah Bai Arifin Pratama Deffi Samuel Prive Widya Antika