Antimicrobial activity and Characterization of Marine bacteria

Jeganathan, P.; Rajasekaran, Kanniah; Devi, Naorem Kiranmala; Karuppusamy, S.

doi:10.30750/ijpbr.1.4.8

Cited by 17 publications

(12 citation statements)

References 31 publications

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“…Taking into account the ability of microalgae to combat pathogenic bacteria found throughout the different aquatic systems, they are considered one of the most important sources of antimicrobial molecules, including proteins, vitamins, fatty acids, pigments, etc [61]. In addition, microalgae coexist with other aquatic organisms creating competitive relationships that provoke them to synthetize or secrete several substances and/or molecules in order to inhibit their competitors [62].…”

Section: Arthrospira Platensismentioning

confidence: 99%

The Usefulness of Microalgae Compounds for Preventing Biofilm Infections

López

Soto

2019

Antibiotics

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Biofilms play an important role in infectious diseases. It has been estimated that most medical infections are due to bacterial biofilms, and about 60–70% of nosocomial infections are also caused by the formation of a biofilm. Historically, microalgae are an important source of bioactive compounds, having novel structures and potential biological functions that make them attractive for different industries such as food, animal feed, aquaculture, cosmetics, and pharmaceutical. Several studies have described compounds produced by microalgae and cyanobacteria species with antimicrobial activity. However, studies on the antibiofilm activity of extracts and/or molecules produced by these microorganisms are scarce. Quorum-sensing inhibitor and anti-adherent agents have, among others, been isolated from microalgae and cyanobacteria species. The use of tools such as nanotechnology increase their power of action and can be used for preventing and treating biofilm-related infections.

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Section: Arthrospira Platensismentioning

confidence: 99%

The Usefulness of Microalgae Compounds for Preventing Biofilm Infections

López

Soto

2019

Antibiotics

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“…The host plants are habitat for endophytic bacteria due to symbiotic mutualism as endophytic bacteria get nutrition which is the vitamin, polysaccharide and fatty acid from its host plant. On the other hand, the bacteria produce several products such as amino acid, antibiotics, and the toxin which are beneficial for growth, metabolism, and increasing chemical resistant of the host plant (Jeganathan et al 2013). The infection due to pathogenic bacteria making the chemical resistant which have a selfprotect for host plant become necessary.…”

Section: Endophytic Bacteria In Seagrass With Antibacterial Activitiementioning

confidence: 99%

Short Communication: Fish fauna of Lake Lauik Tawar and Lake Laulo, Simeulue Island, Indonesia

Muchlisin¹,

Nurfadillah²,

Arisa³

et al. 2017

Biodiversitas

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Abstract. Fitri DS, Pangastuti A, Susilowati A, Sutarno. 2017. Endophytic bacteria producing antibacterial against methicillin-resistant Staphylococcus aureus (MRSA) in seagrass from Rote Ndao, East Nusa Tenggara,. Methicillinresistant Staphylococcus aureus (MRSA) are bacteria that resistant to the various type of antibiotics and yet cannot be handled comprehensively. The discovery of new antibiotic from endophytic bacteria in seagrass of Rote Island is an option to overcome the resistance. The aims of this research were to screen endophytic bacteria inhibit MRSA from seagrass, to determine the species of the endophytic bacteria and the genetic relationship. Isolation of endophytic bacteria has carried out by inoculating surface sterilization seagrass leaves on Marine Agar (MA) medium. Selection of potential endophytic bacteria-producing anti-MRSA has done using overlay method against MRSA, gram-positive Bacillus subtilis, and gram-negative Escherichia coli. Identification of the endophytic bacteria based on the sequence of 16S rRNA encoding gene. The results showed that there were eight isolates of endophytic bacteria which have antibacterial activity against MRSA of seagrass Enhalus acoroides, Thalassia hemprichii, and Cymodocea rotundata in the Litianak and Oeseli Beaches, Rote Ndao. The diameter of inhibition zone was between 0.65-18.27 mm with narrow spectrum with broad spectrum antibacterial activity. The eight potential endophytic bacteria identity were Bacillaceae E2M1, Bacillaceae E2M3, Bacillus E2M4, Bacillus E2M7, Bacillaceae E2M8, Pseudomonadaceae C1M7, Shewanellaceae C2M3, and Rhodobacteraceae T1M3. Most of the isolates can be said to be a new species as the percent similarity of 16S rRNA gene sequence was less than 95% and promising to produce new antibacterial compounds. Phylogenetic relationship showed some isolates clustering in different groups that present the diverse groups of endophytic bacteria were found.

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“…Secondary metabolites of sponge microbes are adaptive and play key roles in their host defense mechanism against pathogens, predators and competitors, in addition to in fouling process and competition for space and food resources. Nowadays, it is known that marine sponges and their associated microorganisms are economically important because they produce the most active bioactive compounds that are potentially useful for human in pharmaceutical industry sector, for instance as antimicrobial, antifungal, antioxidant, anticancer and anti-inflammatory agents (Jeganathan et al, 2013). Bioactive compounds mostly found in sponge symbiont microorganisms are generally derived from alkaloids, terpenes, terpenoids and peptides (Mehbub et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Antimicrobial and Antioxidant Activities of Bacterial Extracts from Marine Bacteria Associated with Sponge <i>Stylotella</i> sp.

Yoghiapiscessa¹,

Batubara²,

Wahyudi³

2016

American Journal of Biochemistry and Biotechnology

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Sponge-associated bacteria have great potential in developing marine pharmaceutical industry since they are capable of synthesizing numerous bioactive metabolite compounds. This study aimed to isolate, characterize and investigate potential antimicrobial, toxicity and antioxidant of bioactive compounds of bacteria associated with sponge Stylotella sp. A total of 138 bacteria were selected. During screening stage, 45 isolates (32%) produced a wide spectrum and species specific bioactive compound against microbial test strains (Pseudomonas aeruginosa, Staphylococcus aureus, Bacillus subtilis, Eschericia coli ATCC 8739, Enteropathogenic Escherichia coli (EPEC) and Candida albicans). Crude extract of five selected potential bacteria were extracted using ethyl acetate solvent. They were identified to have a wide spectrum inhibition capability against microbial test strains. The extracts toxicity were examined using the Brine Shrimp Lethality Test (BSLT) method. All extracts showed toxicity of LC 50 in the range of 35.89-484.17 µg mL −1 against Artemia salina. By using Cupric Reducing Antioxidant Capacity (CUPRAC) radical reduction test revealed all the extracts showed potential antioxidant activites, ranging from 445.33 to 1610.00 µmol trolox/g extract. Based on 16S rRNA sequence analysis revealed that isolates STIL 33, STIL 37, STIL 44, STIL 55 and STIL 9 were closely related with Pseudoalteromonas flavipulchra strain NCIMB 2033, Serratia marcescens strain NBRC 102204, Catenococcus thiocycli strain TG 5-3, Vibrio natriegens strain ATCC 14048 and Bacillus subtilis strain JCM 1465, respectively.

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Antimicrobial activity and Characterization of Marine bacteria

Cited by 17 publications

References 31 publications

The Usefulness of Microalgae Compounds for Preventing Biofilm Infections

The Usefulness of Microalgae Compounds for Preventing Biofilm Infections

Short Communication: Fish fauna of Lake Lauik Tawar and Lake Laulo, Simeulue Island, Indonesia

Antimicrobial and Antioxidant Activities of Bacterial Extracts from Marine Bacteria Associated with Sponge <i>Stylotella</i> sp.

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