Effendi, Irwan
Universitas Riau

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Journal : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

Experiment of Rinso Detergent’s Effect On the Growth of Heterotrophic Bacteria in Sea Water Tanjung, Cahyani Fitrah; Effendi, Irwan; ', Elizal
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 4, No 2 (2017): Wisuda Oktober Tahun 2017
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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This research was conducted in March-April 2017 at Marine Microbiology Laboratory, Faculty of Fisheries and Marine University of Riau. The purpose of this study is to determine the different concentration of detergent (0 ml/L, 1.5 ml/L, 3 ml/L, 4.5 ml/L, 6 ml/L) in different observation time (0, 5, 10, 15, 20) on the growth of heterotrophic bacteria in sea water. Completely randomized design was used in this experimental method. The results showed that bacterial growth of all treated samples decreased on the 5th day of incubation. However, the population began to increase on the 10th day of incubation. The count of maximum bacterial growth was 1.46 x 109 found in the 4.5 ml/L treated detergent, and the lowest growth was 3.73 x 107 in the 1.5 ml/L treated detergent. Statistical analysis (ANOVA) showed that the concentrations in different observation times on the growth of heterotrophic bacteria showed significant effect and the value was (P <0.005).Keywords: heterotrophic bacteria, population growth, rinso, sea water.
DENSITY OF Pseudomonas sp. BACTERIA AND HETEROTROPHIC BACTERIA IN DUMAI SEAWATER OFRIAU PROVINCE Masdini, Alvira; Feliatra, Feliatra; Effendi, Irwan
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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ABSTRACT Pseudomonas sp. is a hydrocarbonoclasticbacteria that is capable of degrading various types of hydrocarbons. Pseudomonas sp.including bacteria that have the potential to become pathogens. This research was conducted in April to May 2018. This study aims to calculate the density of Pseudomonas sp.bacteriaand heterotrophic bacteria in Dumai sea waters, comparison of the desity of Pseudomonas sp. bacteria to heterotrophic bacteria at each station and the resistance of Pseudomonas sp. to antibiotics. The result showed that densityPseudomonas sp. ranged from 2.25 x 105- 6.08 x 105 CFU/ml. The highest number of Pseudomonas sp.at station 1 and lowest at station 5. The total number of heterotrophic bacteria ranged from 7.37 x 106 - 10.38 x 106 CFU/ml. The highest number of heterotrophic bacteria at station 4 and the lowest at station 5.The highest percentage rasioof density of Pseudomonas sp. bacteri to heterotrophic bacteria was in station 1 (6.26%) and the lowest was in station 4 (2.86%). The results of isolation of bacteria obtained 25 pure isolates and tested for bacterial resistance to antobiotics. Results of isolation bacteria obtained 25 pure isolates and tested the resistance ofPseudomonassp. bacteriato antibiotics.Chloramphenicolantibiotic test results showed 2 isolates classified as sensitive with inhibition zone of 21,3 – 21,9 mm, 1 isolate including resistance with 9,7 mm inhibition zone, with a 22 isolates classified as intermediate with a inhibition zone of 9.7 – 19.6 mm. Two other antibiotics Penicillin and Isoniazid, all bacterial isolates were resistant with the inhibition zone range from 1.2 – 4.6 mm and 1 – 2.8 mm respectively Keyword: Density, Pseuomonas sp.,Heterotrophic Bacteria, Antibiotics 
MICROSCOPIC ANALYSIS THE GROWTH OF Azolla microphylla IN BRACKISH WATER Daulay, Anita Diah Permata Sari; Effendi, Irwan; Feliatra, Feliatra
Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Vol 5 (2018): Edisi 2 Juli s/d Desember 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan

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                                  AbtrakAzolla microphyllais a water fern that floats and rich of protein, essential amino acids, vitamins and minerals. The ferncan be found in ponds, ditches,warm temperature fields and tropical regions throughout the world. Research on microscopic analysis the growth of Azolla microphylla in brackish water was carried out from April to June 2018. A. microphylla was grown in containers with a volume capacity of 20 liters. The container was filled with planting media, then filled with brackish water to a volume of 10-15 liters and this ecosystem is set to 0 ‰, 1 ‰, 2 ‰ and 3 ‰. The growth of A. microphylla was observed by measuring biomass growth, colony growth, and double time growth, microscopic observations of leaves, rhizomes and rootsA. microphylla. From the results of the study it was found that A. microphylla can grew in brackish water (salinity 1‰, 2‰ and 3‰), however growth tends to be slower than in fresh water (salinity 0 ‰), and also can be seen based on the cross section of leaves, roots and rhizomes that grew optimally at salinity 0 ‰, and experience changes in shape and color in the cross section and do not grew optimally at salinity 1‰, 2‰ and 3‰.Keywords: Azolla microphylla growth, microscopic analysis, brackish water