scholarly journals Antibacterial Activity of Chitosan, Some Plant Seed Extracts and Oils Against Escherichia coliand Staphylococcus aureus

2020 ◽  
Vol 35 (2) ◽  
pp. 144-150
Author(s):  
Ali Eslem Kadak
Keyword(s):  
Staphylococcus Aureus ◽  
Antibacterial Activity ◽  
Plant Seed ◽  
Seed Extracts

scholarly journals Antibacterial, Antioxidant, and Anticholinesterase Activities of Plant Seed Extracts from Brazilian Semiarid Region

2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
Davi Felipe Farias ◽  
Terezinha Maria Souza ◽  
Martônio Ponte Viana ◽  
Bruno Marques Soares ◽  
Arcelina Pacheco Cunha ◽  
...  
Keyword(s):  
Staphylococcus Aureus ◽  
Antimicrobial Activity ◽  
Antioxidant Activity ◽  
Enzyme Activity ◽  
Semiarid Region ◽  
Plant Seed ◽  
Salmonella Choleraesuis ◽  
Hemolytic Assay ◽  
Brazilian Semiarid ◽  
Seed Extracts

The antimicrobial, antioxidant, and anticholinesterase activities of ethanolic seed extracts of twenty-one plant species from Brazilian semiarid region were investigated. The extracts were tested for antimicrobial activity against six bacteria strains and three yeasts. Six extracts presented activity against the Gram (−) organismSalmonella choleraesuisand the Gram (+) organismsStaphylococcus aureusandBacillus subtilis. The MIC values ranged from 4.96 to 37.32 mg/mL. TheTriplaris gardnerianaextract presented activity against the three species, with MIC values 18.8, 13.76, and 11.15 mg/mL, respectively. Five extracts presented antioxidant activity, with EC50values ranging from 69.73 μg/mL (T. gardneriana) to 487.51 μg/mL (Licania rigida). For the anticholinesterase activity, eleven extracts were capable of inhibiting the enzyme activity. From those,T. gardneriana,Parkia platycephalaandConnarus detersuspresented the best activities, with inhibition values of 76.7, 71.5, and 91.9%, respectively. The extracts that presented antimicrobial activity were tested for hemolytic assay against human A, B, and O blood types and rabbit blood. From those, only theMyracrodruon urundeuvaextract presented activity (about 20% of hemolysis at the lowest tested concentration, 1.9 µg/mL). Infrared spectroscopy of six representative extracts attested the presence of tannins, polyphenols, and flavonoids, which was confirmed by a qualitative phytochemical assay.

scholarly journals Study of Antibacterial Activity of some Date Seed Extracts

2019 ◽  
Vol 32 ◽  
pp. 247-257
Author(s):  
Nareman A.S. Aljazy ◽  
Aum El-Basher H.J. Al-Mossawi ◽  
Ali K. Al-Rikabi
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Antibacterial Activity ◽  
Streptococcus Pyogenes ◽  
Ethanolic Extract ◽  
Ethanol Extract ◽  
Inhibition Zone ◽  
Date Seed ◽  
Growth Of Bacteria ◽  
Seed Extracts

Eight species of pathogenic and contaminated bacteria were Isolated and identified with the biochemical test and make sure of purity with VITIC2 Technical. The bacteria were Acinetobacter baumannii, Bacillus subtilis, Escherichia coli, Klebsiella pneumoni, Pseudomonas aeruginosa, Proteus mirabilis, Staphylococcus aureus and Streptococcus pyogenes. Investigation effect of aqueous, ethanolic, methanolic of Halawi, Khadrawiand Zahdi date seed extracts on the growth of isolated bacteria, the results showed that ethanolic extract was most effective extract compared to other extracts in influencing on the growth of bacteria using Agar Well Diffusion. The most active extract against P. aeruginosa strain was ethanol extract from Zahdi seed with a 22.3+ 0.32mm inhibition zone followed by 20.2 + 0.22 mm for Escherichia coli.

scholarly journals In-vitro antibacterial activity of the seed extract of three-member Artocarpus towards Methicillin-Resistant Staphylococcus aureus (MRSA)

2020 ◽  
Vol 9 (2) ◽  
pp. 128-135
Author(s):  
Muhammad Evy Prastiyanto ◽  
Inas Hasna Azizah ◽  
Hafizha Dara Haqi ◽  
Bagus Dwi Yulianto ◽  
Aulia Bella Agmala ◽  
...  
Keyword(s):  
Staphylococcus Aureus ◽  
Antibacterial Activity ◽  
Methicillin Resistant Staphylococcus Aureus ◽  
Seed Extract ◽  
Methicillin Resistant ◽  
Biological Source ◽  
Agar Well Diffusion Assay ◽  
Diffusion Assay ◽  
Seed Extracts

Methicillin-Resistant Staphylococcus aureus (MRSA) infections have created a critical need for the development of natural antibacterials from a biological source. This research aimed to investigate the antibacterial activity of the seed extract of three-member Artocarpus (Artocarpus heterophyllus, A. champeden, and A. camansi) against MRSA which are the most prevalent causes of infections in patients. Crude seed extracts of three-member Artocarpus were evaluated for their antibacterial activity against MRSA. The antibacterial activity against MRSA of the three extracts was assayed in vitro by the agar well diffusion assay and agar microdilution method and minimum bactericidal concentration. The antibacterial activity, calculated as a zone of inhibition and MIC, MBC values. The Crude seed extracts of three-member Artocarpus showed antibacterial activity against the MRSA in the agar well diffusion assay (1.5-9 mm inhibition diameter). The MIC value of extract showed at 15.62 mg/mL and the MBC value of seed extract of A. heterophyllus at 62.5 mg/mL, A. champeden at 31.25 mg/mL, A. camansi at 250 mg/mL. All seed extracts have the potential to be developed as antibacterial agents, particularly against MRSA strain. Studies on the antibacterial activity against MRSA can provide new information about the benefits seed of members of Artocarpus as a source of natural antibacterial.

Antibacterial Activity of Desert Truffles from Saudi Arabia Against Staphylococcus aureus and Pseudomonas aeruginosa

2017 ◽  
Vol 19 (2) ◽  
pp. 121-125 ◽  
Author(s):  
Domenico Schillaci ◽  
Maria Grazia Cusimano ◽  
Stella Maria Cascioferro ◽  
Vita Di Stefano ◽  
Vincenzo Arizza ◽  
...  
Keyword(s):  
Staphylococcus Aureus ◽  
Pseudomonas Aeruginosa ◽  
Antibacterial Activity ◽  
Saudi Arabia ◽  
Desert Truffles

Antibacterial Activity of Thujaoccidentalis,ThujaorientalisandChamaecyparisobtusa

2017 ◽  
Vol 8 (03) ◽  
Author(s):  
Kyoung- Sun Seo ◽  
Seong Woo Jin ◽  
Seongkyu Choi ◽  
Kyeong Won Yun
Keyword(s):  
Staphylococcus Aureus ◽  
Antibacterial Activity ◽  
Antibacterial Agent ◽  
Methanol Extract ◽  
The Other ◽  
Diffusion Method ◽  
E Coli ◽  
Agar Diffusion ◽  
Agar Diffusion Method ◽  
Crude Methanol Extract

The antibacterial activity of three Cupressaceae plants (Thujaoccidentalis,ThujaorientalisandChamaecyparisobtusa) was tested against three bacteria using the agar diffusion method. The ether and ethylacetate fraction of crude methanol extract from the three plants showed potent antibacterial activity against the tested microorganisms. The result showed that Staphylococcus aureus revealed the most sensitivity among the tested bacteria. Thujaoccidentalisether fraction and Thujaorientalis hexane fraction exhibited the highest antibacterial activity against Staphylococcus aureus. E. coli was shown the highest MIC values compared to the other two tested bacteria, which indicates the lowest antibacterial activity against the bacterium. This study promises an interesting future for designing a potentially active antibacterial agent from the three Cupressaceae plants.

Chemical Composition and Antibacterial Activity of Essential Oils of Three Medicinal Plants from Algerian Semi-Arid Climatic Zone

2018 ◽  
Vol 16 (S1) ◽  
pp. S155-S163 ◽  
Author(s):  
S. Mehalaine ◽  
O. Belfadel ◽  
T. Menasria ◽  
A. Messaili
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Pseudomonas Aeruginosa ◽  
Antibacterial Activity ◽  
Chemical Composition ◽  
Essential Oil ◽  
Essential Oils ◽  
Rosmarinus Officinalis ◽  
Salvia Officinalis ◽  
Thymus Algeriensis

The present study was carried out to determine, for the first time, the chemical composition and antibacterial activity of essential oils derived from the aerial parts of three aromatic plants Thymus algeriensis Boiss & Reut, Rosmarinus officinalis L., and Salvia officinalis L. growing under semiarid conditions. The essential oils were chemically analyzed and identified by gas chromatography (GC) and GC/ mass spectrometry (GC/MS) and their antimicrobial activity was individually evaluated against Staphylococcus aureus, Escherichia coli, and Pseudomonas aeruginosa using both agar disk diffusion and agar dilution methods. The major constituents of Thymus algeriensis essential oil were identified as camphor (13.62%), 1,8-cineol (6.00%), borneol (5.74%), viridiflorol (4.00%), and linalool (3.93%). For Rosmarinus officinalis essential oil, 48 compounds were characterized, of which the main constituents were camphor (17.09%), Z-β-ocimene (10.88%), isoborneol (9.68%), α-bisabolol (7.89%), and borneol (5.11%). While, Salvia officinalis essential oil was characterized by β-thujone (16.44%), followed by viridiflorol (10.93%), camphor (8.99%), 1,8-cineol (8.11%), trans-caryophyllene (5.85%), and α-humulene (4.69%) as the major components. Notably, results from antibacterial screening indicated that Thymus algeriensis and Salvia officinalis essential oils exhibited a strong inhibitory effect against both Escherichia coli and Staphylococcus aureus compared to Rosmarinus officinalis essential oil. Further, less activity was recorded against Pseudomonas aeruginosa for the three tested essential oils.

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