Antimicrobial Activity of Various Plant Extracts on Pseudomonas Species Associated with Spoilage of Chilled Fish

Bahurmiz, Osan Maroof and Ahmad, Rosma and Ismail, Noryati and Adzitey, Frederick and Sulaiman, Shaida Fariza (2016) Antimicrobial Activity of Various Plant Extracts on Pseudomonas Species Associated with Spoilage of Chilled Fish. Turkish Journal of Agriculture: Food Science and Technology, 4 (11). pp. 1017-1023. ISSN 2148-127X

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The antimicrobial activity of various plant extracts on Pseudomonas bacteria isolated from spoiled chilled tilapia (Oreochromis sp.) was evaluated in this study. In the first stage of this study, red tilapia was subjected to chilled storage (4°C) for 3 weeks, and spoilage bacteria were isolated and identified from the spoiled fish. Pseudomonas was the dominant bacteria isolated from the spoiled fish and further identification revealed that P. putida, P. fluorescens and Pseudomonas spp. were the main species of this group. In the second stage, methanolic extracts of 15 selected plant species were screened for their antimicrobial activity, by agar disc diffusion method, against the Pseudomonas isolates. Results indicated that most of the extracts had different degrees of activity against the bacterial isolates. The strongest activity was exhibited by bottlebrush flower (Callistemon viminalis) extract. This was followed by extracts from guava bark (Psidium guajava) and henna leaf (Lawsonia inermis). Moderate antimicrobial activities were observed in extracts of clove (Syzygium aromaticum), leaf and peel of tamarind (Tamarindus indica), cinnamon bark (Cinnamomum zeylanicum), wild betel leaf (Piper sarmentosum) and fresh thyme (Thymus spp.). Weak or no antimicrobial activity was observed from the remaining extracts. The potential antimicrobial activity shown by some plant extracts in this study could significantly contribute to the fish preservation.

Item Type: Article
Subjects: Q Science > QH Natural history > QH1 Natural history (General - Including nature conservation, geographical distribution)
T Technology > T Technology (General) > T1-995 Technology(General)
Divisions: Pusat Pengajian Sains Kajihayat (School of Biological Sciences) > Article
Zoom Profil Pakar (Expert Profile) > Shaida Fariza Sulaiman (Biological Sciences)
Depositing User: Mr Noorazilan Noordin
Date Deposited: 11 Jan 2018 01:26
Last Modified: 11 Jan 2018 01:26

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