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All Journal Jurnal Pengolahan Hasil Perikanan Indonesia Squalen Bulletin of Marine and Fisheries Postharvest and Biotechnology
Ratnawati, Susana Endah
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Environmental Science Immunology & microbiology

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Growth Rate and Histamine Production of Klebsiella sp. CK02 Isolated from Skipjack Tuna Compared with Morganella morganii ATCC 25830 at Various Incubation Temperatures Dityanawarman, Aldino; Dewi, Indun Puspita; Ratnawati, Susana Endah; Ekantari, Nurfitri; Tamplin, Mark
Squalen, Buletin Pascapanen dan Bioteknologi Kelautan dan Perikanan Vol 15, No 1 (2020): May 2020
Publisher : Research and Development Center for Marine and Fisheries Product Processing and Biotechnol

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (611.845 KB) | DOI: 10.15578/squalen.v15i1.441

Abstract

One of an important quality parameter in tuna is the level of histamine content. The contamination of histamine in tuna is mainly due to the activity of histidine decarboxylase produced by the bacteria. A rapid growth of histamine producing bacteria is correlated with the practice of temperature abuse during handling. This study aimed to develop predictive growth modeling of two histamine-producing bacteria in the function of temperature. The growth and histamine production of Klebsiella sp. CK02 and Morganella morganii ATCC 25830 at various temperatures were measured in tryptic soy broth histidine (TSBH) and tuna fish infusion broth (TFIB) growth media. Broths were incubated at 4°C and 15°C for 7 days, and at 30°C and 40°C for 24 hours. The Baranyi and Roberts model was used with DMFit to determine primary growth kinectics, and the Ratkowsky square root model to describe bacterial growth rate as a function of temperature. Histamine production was enumerated by the apparent yield factor (pYhis/CFU) value. Growth rate increased with temperature, with a maximum rate at 40°C for Klebsiella sp. CK02 (0.740 log CFU/h) and M. morganii (0.578  log CFU/h). The Tmin for Klebsiella sp. CK02 in TFIB was -8.9°C, indicating better survival in low storage temperature, compare to M. morganii ATCC 25830. In addition, Klebsiella sp. CK02 produced a lower pYhis/CFU at 15 and 30°C compared to M. morganii ATCC 25830. 
Pertumbuhan Morganella morganii pada cakalang dengan kondisi penyimpanan berbeda dan deteksi histamin metode TLC: Pertumbuhan Morganella morganii pada cakalang dengan kondisi penyimpanan berbeda dan deteksi histamin metode TLC Ratnawati, Susana Endah; Sari, Lutfia Permata; Agustyar, Ahmad Awaludin; Puspita, Indun Dewi
Jurnal Pengolahan Hasil Perikanan Indonesia Vol. 28 No. 11 (2025): Jurnal Pengolahan Hasil Perikanan Indonesia 28(11)
Publisher : Department of Aquatic Product Technology IPB University in collaboration with Masyarakat Pengolahan Hasil Perikanan Indonesia (MPHPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17844/4mms8195

Abstract

Morganella morganii, a strong histamine-producing bacterium (HPB), has been frequently detected in seafood, such as skipjack tuna. Temperature fluctuations and improper packaging have resulted in bacterial proliferation and histamine production. This study aimed to determine the effects of different packaging and temperature conditions on M. morganii growth and to examine histamine formation in skipjack tuna. A factorial design with two factors, namely packaging type (vacuum and non-vacuum) and storage temperature (4, 15, 30, and 40°C), was used in this study.  The bacterial growth model over time was analyzed using DMFit software. Histamine production was analyzed using thin-layer chromatography (TLC) combined with ImageJ program visualization. The results indicated that different temperatures significantly affected the bacterial growth rate (p < 0.05). The application of vacuum packaging at 4 °C retarded histamine formation in skipjack tuna cubes. The highest growth rate (0.2652 log CFU-1h-1) was observed in samples under non-vacuum packaging stored at 40 °C. M. morganii. At 15 °C, a 3 to 4 log increase was observed, starting from 3.2 to 7.5 (vacuum packaging) and from 5.8 to 8.3 log CFU-1 mL-1 (non-vacuum packaging) at the end. Nevertheless, the production of histamine in vacuum-packed samples stored at 15°C after days 3 and 4 of incubation were 446 ppm and 443.5 ppm, respectively. These findings highlight the importance of proper packaging of skipjack tuna using a cold chain system during storage. This study also confirmed the potential application of TLC for the detection of histidine and histamine.
Co-Authors Agustyar, Ahmad Awaludin Dityanawarman, Aldino Indun Dewi Puspita Nurfitri Ekantari Puspita, Indun Dewi Sari, Lutfia Permata Tamplin, Mark