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All Journal JURNAL PERIKANAN TROPIS Authentic Research of Global Fisheries Application Journal (Aurelia Journal)
Apri Mujiyanti
Politeknik Kelautan dan Perikanan Dumai
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Environmental Science Immunology & microbiology

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IDENTIFIKASI BAKTERI PADA SERASAH DAUN MANGROVE YANG TERDEKOMPOSISI DI BANDAR BAKAU KOTA DUMAI Putri Wening Ratrinia; Nirmala Efri Hasibuan; Aulia Azka; Sumartini Sumartini; Apri Mujiyanti; Kurnia Sada Harahap; Muh Suryono
JURNAL PERIKANAN TROPIS Vol 7, No 2 (2020)
Publisher : Universitas Teuku Umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jpt.v7i2.2349

Abstract

Bacteria has an important role in decomposition and productivity activities in mangrove ecosystem. The study about identification of decomposing mangrove litter bacteria in Dumai has never been done. The aim of this study is to determine Total Plate Count and identify the dominant bacterial species from decomposing Rizhopora sp, Xylocarpus sp, dan Avicennia sp litter in Dumai. The method used in this research was survey method, bacterial isolation was done by pour plate method which is used in total calculation of bacteria was Total Plate Count (TPC), and identify the dominant bacterial in mangrove litter. The total bacteria which gained on Avicennia sp leaf litter are 0,64 x 105 Cfu/ml. On the other hand, the total bacteria from Rhizopora sp leaf litter has a lower number of colonies that is 0,55 x 105± 0,01 Cfu/ml. The bacterial identification test was carried out by gram staining method and morphological observation by microscopy. The dominant bacterial species in three mangrove species (Rizhopora sp, Xylocarpus sp, dan Avicennia sp) are Micrococcus sp dan Aerococcus sp. Keywords : Total Plate Count, Micrococcus sp, Aerococcus sp, Organic Matterial
TOTAL PLATE NUMBERS TEST (ALT) ON BOILED MACKAREL TUNA (Euthynnus affinis) TO THE DIFFERENT BOILING TIME WITH THE POUR PLATE METHOD Apri Mujiyanti; Nirmala Efri Hasibuan; Bayythi Jaynaythi
Aurelia Journal Vol 2, No 2 (2021): April
Publisher : Politeknik Kelautan dan Perikanan Dumai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/aj.v2i2.9898

Abstract

Pindang mackarel tuna/ boiled mackarel tuna (Euthynnus affinis) is a traditional fishery product that contains nutrients in the form of protein, fat, vitamins and minerals needed by the body, but on the other hand it is easy to quality deterioration, this is because it have high protein content with amino acid content. which is used for the metabolism of microorganisms and the production of ammonia. To identify the quality of fish, microbiological testing can be carried out in the laboratory, namely by testing the Total Plate Number (ALT). This test is a quality parameter in fishery products. The method used in the ALT test is the pour plate method with boiling time treatment of 1 hour, 2 hours, and 3 hours. The results of the total microbial analysis of boiled mackarel tuna at 3 hours boiling time obtained ALT value of 0.047 x 103 CFU / gram, this shows that the boiling time will be inversely proportional to the number of microbes contained in boiled mackarel tuna.
Co-Authors Aulia Azka Bayythi Jaynaythi Muh Suryono Nirmala Efri Hasibuan Putri Wening Ratrinia Sumartini, nFN