Antibacterial Activities of Kombucha Tea From Some Types of Variations of Tea on Escherichia coli and Staphylococcus aureus

Two Schiff bases of chitosan (CTS) were synthesized from 4-methoxylbenzylaldehyde (CH3O-CTS) and 4-methylbenzylaldehyde(CH3-CTS). The Schiff bases were characterized by FTIR, DSC-TGA, solid13C CP-Mas NMR, and elemental analysis. Antibacterial activities of the Schiff bases against Escherichia coli and Staphylococcus aureus were measured by the optical density method. The antibacterial activity of the Schiff bases is better than that of the original CTS. The IC50of CH3O-CTS and CH3-CTS againstEscherichia coliis respectively 40.3 ppm and 43 ppm, which being 38.5 ppm and 39.5 ppm against Staphylococcus aureus, lower than IC50of chitosan, being 59.5 ppm and 52 ppm againstEscherichia coliand Staphylococcus aureus, respectively.

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UJI AKTIVITAS ANTIBAKTERI DARI ISOLAT CENDAWAN ENDOFIT ASAL TUMBUHAN SENDUDUK (Melastoma malabathricum L.) TERHADAP Escherichia coli DAN Staphylococcus aureus

Photon: Jurnal Sain dan Kesehatan ◽

10.37859/jp.v8i2.741 ◽

2018 ◽

Vol 8 (2) ◽

pp. 7-12

Author(s):

Israwati Harahap ◽

Vivin Paddillah Rahmi ◽

Nofripa Herlina

Keyword(s):

Escherichia Coli ◽

Staphylococcus Aureus ◽

Endophytic Fungi ◽

Inhibition Zone ◽

Antibacterial Activities ◽

Zone Of Inhibition ◽

Melastoma Malabathricum ◽

Symbiotic Microorganism ◽

And Staphylococcus Aureus ◽

Test Result

Endophytic fungi is a symbiotic microorganism which live inside plant tissues and not harm to their host. Several genera from endophytic fungi known to produce secondary metabolite compounds like antibiotics, anticancer, antifungal, antiviral and antimalarial. This study aimed to investigate antibacterial activity of endophytic fungi from senduduk (Melastoma malabathricum L.) against Escherichia coli and Staphylococcus aureus. Based on the test result, 11 isolates endophytic fungi from senduduk were known to have antibacterial activities. Isolate code 23 have ability to inhibit the growth of E.coli with diameters zone of inhibition is 22 mm and eight isolate endophytic fungi have ability to inhibit the growth of S.aureus (showed by inhibition zone).

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Synthesis, Structures, and Antibacterial Activities of Hydrazone Compounds Derived from 4-Dimethylaminobenzohydrazide

Acta Chimica Slovenica ◽

10.17344/acsi.2020.6333 ◽

2021 ◽

Vol 68 (3) ◽

pp. 567-574

Author(s):

Guo-Xu He ◽

Ling-Wei Xue

Keyword(s):

Escherichia Coli ◽

Staphylococcus Aureus ◽

Nmr Spectra ◽

Antibacterial Activities ◽

13C Nmr Spectra ◽

X Ray Diffraction ◽

X Ray ◽

Mtt Method ◽

Antibacterial Material ◽

And Staphylococcus Aureus

A series of three new hydrazone compounds derived from the condensation reactions of 4-dimethylaminobenzohydrazide with 4-dimethylaminobenzaldehyde, 2-chloro-5-nitrobenzaldehyde and 3-methoxybenzaldehyde, respectively, were prepared. The compounds were characterized by elemental analysis, infrared and UV-vis spectra, HRMS, 1H NMR and 13C NMR spectra, and single crystal X-ray diffraction. Crystals of the compounds are stabilized by hydrogen bonds. The compounds were assayed for antibacterial (Bacillus subtilis, Escherichia coli, Pseudomonas fluorescence and Staphylococcus aureus) and antifungal (Aspergillus niger and Candida albicans) activities by MTT method. The results indicated that compound 2 is an effective antibacterial material.

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Antibacterial Activities of Endophytic Bacteria Isolate AKEBG28 from Yellow Root Plant (Arcangelisia flava (L.) Merr) Against Escherichia coli and Staphylococcus aureus

Proceedings of the 3rd KOBI Congress, International and National Conferences (KOBICINC 2020) ◽

10.2991/absr.k.210621.085 ◽

2021 ◽

Author(s):

Sipriyadi ◽

Risky Hadi Wibowo ◽

Welly Darwis ◽

Resli Siboro ◽

Sal Prima Yudha

Keyword(s):

Escherichia Coli ◽

Staphylococcus Aureus ◽

Endophytic Bacteria ◽

Antibacterial Activities ◽

And Staphylococcus Aureus

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Antibacterial Activities of Pseudomonas orientalis APD 16 Isolate Sponge-Associated Aplysina sp. from Enggano Island Against Escherichia coli and Staphylococcus aureus

Operations Research: International Conference Series ◽

10.47194/orics.v1i2.74 ◽

2020 ◽

Vol 1 (2) ◽

pp. 62-67

Author(s):

Risky Hadi Wibowo

Keyword(s):

Escherichia Coli ◽

Staphylococcus Aureus ◽

Sea Water ◽

Structural Complexity ◽

Antibacterial Activities ◽

Morphological Characters ◽

Filter Feeder ◽

Gram Staining ◽

And Staphylococcus Aureus

Sponge is one of the invertebrates from the Porifera phylum. Sponge bodies have structural complexity with different cell layers. The sponge has many pores (ostium) on the surface of their body as a filter feeder. Sponge is recognized as organisms that have the potential because they can produce metabolites. Secondary metabolites produced by sponges are the result of the association of sponges with bacteria. The sponge used in this study is the Aplysina sp. sponge collected from Enggano island, Bengkulu Province. Aplysina sp. sponge is known to contain metabolites with antibacterial, antifungal and cytotoxic activity on cancer cells. This study aims to identify of potential isolate associated with Aplysina sp. sponge collected from Enggano island. Isolation of bacteria from Aplysina sp. sponge using Sea Water Complete (SWC) media. The isolate was screened by antagonistic test, morphological characters, Gram-staining, biochemical test and molecular identification. Based on the antagonistic test, APD 16 isolate could inhibit Escherichia coli and Staphylococcus aureus in Vitro. APD 16 isolate was identified molecularly using of 16S rRNAgenes analysis and it genetically close with Pseudomonas orientalis.

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