scholarly journals Antagonistic antimicrobial activity of marine fungi and bacteria isolated from marine biofilm and seawaters of Hong Kong

2005 ◽  
Vol 38 ◽  
pp. 231-238 ◽  
Author(s):  
L Miao ◽  
PY Qian
Keyword(s):  
Antimicrobial Activity ◽  
Hong Kong ◽  
Marine Fungi ◽  
Marine Biofilm

scholarly journals EFFECT OF CULTURE CONDITIONS FOR ANTIMICROBIAL ACTIVITY OF MARINE - DERIVED FUNGUS ASPERGILLUS FLOCCULOSUS 01NT.1.1.5

2018 ◽  
Vol 15 (4) ◽  
pp. 721-728
Author(s):  
Phan Thi Hoai Trinh ◽  
Ngo Thi Duy Ngoc ◽  
Vo Thi Dieu Trang ◽  
Phi Quyet Tien ◽  
Bui Minh Ly ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Secondary Metabolites ◽  
Incubation Period ◽  
Marine Fungi ◽  
Antibiotic Production ◽  
Morphological Characteristics ◽  
Colony Growth ◽  
Culture Conditions ◽  
Initial Ph

The biosynthesis of compounds with antibiotic activity produced by marine fungi, strongly depends on their growth conditions. A good understanding of the role of culture conditions in the biosynthesis of metabolites may lead to better exploitation of microbial metabolites. In this study, the influence of culture conditions including incubation period, initial pH and salinity on antimicrobial activity and secondary metabolites production of marine fungus 01NT.1.1.5 was investigated. This isolate, obtained from sponge Stylissa sp. in Nha Trang Bay, exhibited a broad spectrum of in vitro antimicrobial activity to Bacillus cereus ATCC 11778, Escherichia coli ATCC 25922, Staphylococcus aureus ATCC 25923, Listeria monocytogenes ATCC 19111, Streptococcus faecalis ATCC 19433 and Candida albicans ATCC 10231. According to morphological characteristics and sequence analysis of 28S rDNA, the fungus was identified as Aspergillus flocculosus. The results indicated that antimicrobial activity and metabolite amount were highest when the fungus was cultivated in rice medium with incubation period of 20 days. The optimum salinity of 35 g/L and initial pH of 6.0 were found for the maximum antibiotic production. The colony growth, antimicrobial activity and production of secondary metabolites of the strain A. flocculosus 01NT.1.1.5 varied depending on salt concentrations and initial pH of medium. Particularly, extract of this fungus only showed activity against C. albicans when it was cultured in medium with 30-35 g/L salinity and initial pH 4.0-8.0. The results  indicate that salinity and initial pH along with cultivation period are important factors influencing antimicrobial activity and secondary metabolites of A. flocculosus 01NT.1.1.5, and might be for other marine fungi.

scholarly journals UJI AKTIVITAS ANTIMIKROBA DARI JAMUR LAUT YANG BERASOSIASI DENGAN ORGANISME LAUT SPONS Callyspongia aerizusa

PHARMACON ◽  
2019 ◽  
Vol 8 (4) ◽  
pp. 1007
Author(s):  
Fransisca Macpal ◽  
Adithya Yudistira ◽  
Defny S. Wewengkang
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Antimicrobial Activity ◽  
Candida Albicans ◽  
Coral Reef ◽  
Ethyl Acetate ◽  
Marine Fungi ◽  
North Sulawesi ◽  
Liquid Fractionation ◽  
Bioactive Potential

ABSTRACTSponge is the lowest level hollow animal without a spine. Sponges are one of the components of coral reef biota that have bioactive potential that has not been widely used. This study aims to determine whether there is antimicrobial activity of marine fungi associated with sponge Callyspongia aerizusa obtained from Southeast Minahasa Regency, North Sulawesi, against the growth of microbes such as Staphylococcus aureus, Escherichia coli and Candida albicans. Samples were obtained then extracted by maceration using acetone and fractionated using liquid-liquid fractionation with ethyl acetate solvents. The results of this study indicate that the extract from the fungus associated with the Callyspongia aerizusa sponge has activity against Escherichia coli and Candida albicans. Keywords: Antimicrobials, Callyspongia aerizusa, Candida albicans, Escherichia coli, Marine fungi, Staphylococcus aureus.  ABSTRAKSponge (spons laut) adalah hewan berongga tanpa tulang belakang yang paling rendah tingkatannya. Spons merupakan salah satu komponen biota penyusun terumbu karang yang mempunyai potensi bioaktif yang belum banyak dimanfaatkan. Penelitian ini bertujuan untuk mengetahui apakah terdapat aktivitas antimikroba dari jamur laut yang berasosiasi dengan spons Callyspongia aerizusa yang di peroleh dari Kabupaten Minahasa Tenggara, Sulawesi Utara, terhadap pertumbuhan mikroba seperti Staphylococcus aureus, Escherichia coli dan Candida albicans. Sampel diperoleh kemudian diekstraksi secara maserasi dengan aseton dan difraksinasi dengan menggunakan fraksinasi cair-cair menggunakan pelarut etil asetat. Hasil penelitian ini menunjukkan bahwa ekstrak dari jamur yang berasosiasi dengan spons Callyspongia aerizusa memiliki aktivitas terhadap bakteri Escherichia coli dan bakteri Candida albicans. Kata kunci:  Antimikroba, Callyspongia aerizusa, Candida albicans Escherichia  coli,.Jamur laut,  Staphylococcus aureus

scholarly journals Antimicrobial activity of marine fungi isolated from the Son Tra peninsula, Da Nang, Vietnam

2018 ◽  
Vol 39 (4) ◽  
pp. 457-462
Author(s):  
Phan Thi Hoai Trinh ◽  
Ngo Thi Duy Ngoc ◽  
Vo Thi Dieu Trang ◽  
Le Quoc Phong ◽  
Phi Quyet Tien ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Marine Fungi ◽  
Ethyl Acetate Extract ◽  
Microbial Pathogens ◽  
Diffusion Method ◽  
Disc Diffusion Method ◽  
E Coli ◽  
Bioactive Natural Products ◽  
Marine Habitats ◽  
Fungal Isolates

Marine fungi have become an important source of bioactive natural products. The present study was concerned with the screening of antimicrobial activity from 73 fungal strains isolated from various marine habitats collected from five different localities at the Son Tra Peninsula, Da Nang, Vietnam. For the first step of screening, ethyl acetate extract of each fungal isolate was prepared and their antimicrobial activity against the human microbial pathogens was investigated using the disc diffusion method. The panel of human microbial pathogens used were Bacillus cereus ATCC 11778, Escherichia coli ATCC 25922, Staphylococcus aureus ATCC 25923, Pseudomonas aeruginosa ATCC 27853, Listeria monocytogenes ATCC 19111, Streptococcus faecalis ATCC 19433 and Candida albicans ATCC 10231. Among 73 fungal isolates, 29 exhibited antimicrobial activity against at least two tested pathogens. The proportion of the fungal isolates having anti-microbial activity against B. cereus, S. faecalis, L. monocytogenes, S. aureus, E. coli, C. albicans and P. aeruginosa were 42, 33, 31, 22, 7, 5 and 3%, respectively. Further investigations to isolate and characterize the anti-microbial components in the extracts are needed.   Citation: Phan Thi Hoai Trinh, Ngo Thi Duy Ngoc, Vo Thi Dieu Trang, Le Quoc Phong, Phi Quyet Tien, Bui Minh Ly, Tran Thi Thanh Van, 2017. Antimicrobial activity of marine fungi isolated from the Son Tra peninsula, Da Nang, Vietnam. Tap chi Sinh hoc, 39(4): 457-462. DOI: 10.15625/0866-7160/v39n4.8889. *Corresponding author: [email protected] Received 20 November 2016, accepted 12 August 2017 

Factors affecting the distribution of lignicolous marine fungi in Hong Kong

Hydrobiologia ◽  
1982 ◽  
Vol 87 (2) ◽  
pp. 143-160 ◽  
Author(s):  
L. L. P. Vrijmoed ◽  
I. J. Hodgkiss ◽  
L. B. Thrower
Keyword(s):  
Hong Kong ◽  
Marine Fungi ◽  
Factors Affecting

UJI AKTIVITAS ANTIMIKROBA DARI JAMUR LAUT YANG BERASOSIASI DENGAN ALGA Halimeda opuntia

PHARMACON ◽  
2019 ◽  
Vol 8 (1) ◽  
pp. 41
Author(s):  
Ridwan Sukardi Djakatara ◽  
Defny S Wewengkang ◽  
Henki Rotinsulu
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Antimicrobial Activity ◽  
Candida Albicans ◽  
Marine Fungi ◽  
Marine Ecosystem ◽  
Antimicrobial Compounds ◽  
E Coli ◽  
The World

ABSTRACT Algae is a place of life for various microorganisms symbiosis with it, one of which is fungi. Marine fungi are known to have an important contribution to the marine ecosystem. Many types of marine fungi that have been isolated and are known to produce a number of antimicrobial compounds were become a new choice in the world of health. This study aims to determine the antimicrobial activity of isolates fungi which associated with Halimeda opuntia algae collected from the Bay of Manado against Staphylococcus aureus, Escherichia coli, and Candida albicans. The results showed extracts of fungi that were associated with algae Halimeda opuntia did not possesed antimicrobial activity against S. aureus and E.coli and C. albicans. Keywords: Antimicrobials, marine fungi, Halimeda opuntia ABSTRAK Alga merupakan tempat hidup berbagai mikroorganisme yang bersimbiosis dengannya, salah satunya ialah jamur. Jamur laut diketahui memiliki kontribusi yang penting bagi ekosistem laut. Banyak jenis jamur laut yang telah diisolasi dan diketahui menghasilkan sejumlah senyawa antimikroba yang kini menjadi pilihan baru di dunia kesehatan. Penelitian ini bertujuan untuk mengetahui adanya aktivitas antimikroba dari isolat jamur yang berasosiasi dengan alga Halimeda opuntia yang diperoleh dari Teluk Manado terhadap bakteri  Staphylococcus aureus, Escherichia coli, dan jamur Candida albicans. Hasil penelitian menunjukkan ekstrak dari jamur yang berasosiasi dengan alga Halimeda opuntia tidak memiliki aktivitas antimikroba terhadap bakteri S. aureus dan E. coli dan jamur C. albicans. Kata kunci : Antimikroba , jamur laut , Halimeda opuntia

scholarly journals Isolation and screening marine fungi with antimicrobial activity from samples collected in Nha Trang bay, VietNam

2018 ◽  
Vol 16 (1) ◽  
pp. 181-187
Author(s):  
Phan Thi Hoai Trinh ◽  
Phi Quyet Tien ◽  
Ngo Thi Duy Ngoc ◽  
Bui Minh Ly ◽  
Tran Thi Thanh Van
Keyword(s):  
Antimicrobial Activity ◽  
Marine Fungi ◽  
Antimicrobial Properties ◽  
Biologically Active ◽  
Microbial Pathogens ◽  
Diffusion Method ◽  
Disc Diffusion Method ◽  
E Coli ◽  
Nha Trang Bay ◽  
Complex Ecosystem

The marine environment is an extremely complex ecosystem and contains a broad spectrum of fungal diversity. Marine fungi have been shown to be tremendous sources for new and biologically active secondary metabolites. The present study aims to isolate and screen antimicrobial properties of 100 fungus strains from different marine sources including seaweeds, soft corals, sponges and sediment collected at Nha Trang Bay, Vietnam. In preliminary experiments, the crude extracts of these fungal isolates with ethyl acetate were screened for their antimicrobial activity against the human microbial pathogens including Bacillus cereus ATCC 11778, Escherichia coli ATCC 25922, Staphylococcus aureus ATCC 25923, Pseudomonas aeruginosa ATCC 27853, Listeria monocytogenes ATCC 19111, Streptococcus faecalis ATCC 19433 and Candida albicans ATCC 10231 by the disc diffusion method. Among the 100 isolates, 59 strains exhibited antimicrobial activity against at least two tested pathogens, that 57% against S. aureus, 50% against L. monocytogenes, 49% against B. cereus, 45% against S. faecalis, 7% against E. coli, 5% against C. albicans, and only 2% against P. aeruginosa. The present study has revealed the presence of high numbers of marine fungi from Nha Trang waters having antimicrobial properties and they need to be investigated further for natural bioactive products.

Seasonal patterns of primary colonization by lignicolous marine fungi in Hong Kong

Hydrobiologia ◽  
1982 ◽  
Vol 89 (3) ◽  
pp. 253-262 ◽  
Author(s):  
L. L. P. Vrijmoed ◽  
I. J. Hodgkiss ◽  
L. B. Thrower
Keyword(s):  
Hong Kong ◽  
Marine Fungi ◽  
Seasonal Patterns
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