Antibacterial Activity of Guava (<i>Psidium guajava</i>L.) and Neem (<i>Azadirachta indica</i>A. Juss.) Extracts Against Foodborne Pathogens and Spoilage Bacteria

Hoque, Mahfuzul; Bari, Md. Latiful; Inatsu, Yasuhiro; Juneja, Vijay K.; Kawamoto, Shinichi

doi:10.1089/fpd.2007.0040

Cited by 106 publications

(40 citation statements)

References 23 publications

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“…However, E. coli and P. aeruginosa were sensitive to all the three fruits in our study, contradicting results obtained by Qabaha [20]. Previous study showed that guava possessed the highest inhibition for L. monocytogenes , S. aureus , S. aureus , and V. parahaemolyticus [21]. Also, sweetsop extract was found to be capable of inhibiting E. coli , M. albican , S. typhimurium , Klebsiella pneumoniae , and Proteus vulgaris [22].…”

Section: Resultscontrasting

confidence: 92%

Phenolic Compounds and In Vitro Antibacterial and Antioxidant Activities of Three Tropic Fruits: Persimmon, Guava, and Sweetsop

Zhou

2016

BioMed Research International

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In our previous study, we have found that persimmon, guava, and sweetsop owned considerably high antioxidant activity and contained high total phenolic contents as well. In order to further supply information on the antibacterial and antioxidant activity of these three tropic fruits, they were extracted by 80% methanol. We then examined the extractions about their phenolic compounds and also studied the extractions and phenolic contents about their minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) against twelve targeted pathogens including 8 standard strains (Staphylococcus aureus, Bacillus cereus, Staphylococcus epidermidis, Monilia albican, Escherichia coli, Salmonella typhimurium, Shigella flexneri, and Pseudomonas aeruginosa) and 4 multidrug-resistant strains (methicillin-resistant Staphylococcus aureus, ESBLs-producing Escherichia coli, carbapenems-resistant Pseudomonas aeruginosa, and multidrug-resistant Acinetobacter baumannii), which are common and comprehensive in clinic. We also employed two ways, that is, FRAP and TEAC, to evaluate their antioxidant activities, using ultraviolet and visible spectrophotometer. Our study indicated that the three tropical fruits possessed obvious antioxidant and antibacterial activity, which supported the possibility of developing the fruits into new natural resource food and functional food as well as new natural antimicrobial agent and food preservatives. Moreover, phenolic compounds detected in the fruits could be used as a potential natural antibacterial agent and antioxidant.

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Section: Resultscontrasting

confidence: 92%

Phenolic Compounds and In Vitro Antibacterial and Antioxidant Activities of Three Tropic Fruits: Persimmon, Guava, and Sweetsop

Zhou

2016

BioMed Research International

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“…These results partially agree with data of the viable cell counts commented on above, where only neem oil at 10% inhibited the growth of both fungi, A. Niger and P. expansum , showing fungicidal activity after 24 h of contact. This result and those previously reported [17,40,41] justify the interest in neem oil extracts as an active additive for obtaining bioactive films. According to the lack of notable antifungal activity of the rest of tested extracts, active films were formulated with neem oil and with oregano essential oil with proved antimicrobial activity [19,22].…”

Section: Resultssupporting

confidence: 88%

“…In fact, Baswa et al [13] revealed that the neem oil has bactericidal activity against 14 strains of pathogenic bacteria such as Staphylococcus aureus [14], Staphylococcus typhus [15], and Escherichia coli , Streptococcus mutans and lactobacilli [16]. On the other hand, Mahfuzul Hoque et al [17] determined the antibacterial activity of neem extracts against 21 strains of foodborne pathogens: Listeria monocytogenes , Staphylococcus aureus , Escherichia coli O157:H7, Salmonella Enteritidis , Vibrio parahaemolyticus , and Bacillus cereus , and five food spoilage bacteria: Pseudomonas aeroginosa , Psuedomas putida , Alcaligenes faecalis , and Aeromonas hydrophila . They concluded that neem extracts generally showed higher antimicrobial activity against Gram-positive bacteria than against Gram-negative, and none of the extracts showed antimicrobial activity against E. coli O157:H7 and Salmonella Enteritidis .…”

Section: Introductionmentioning

confidence: 99%

Physical and Antimicrobial Properties of Starch-PVA Blend Films as Affected by the Incorporation of Natural Antimicrobial Agents

Cano

Cháfer

Chiralt

et al. 2015

Foods

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In this work, active films based on starch and PVA (S:PVA ratio of 2:1) were developed by incorporating neem (NO) and oregano essential oils (OEO). First, a screening of the antifungal effectiveness of different natural extracts (echinacea, horsetail extract, liquid smoke and neem seed oil) against two fungus (P. expansum and A. niger) was carried out. The effect of NO and OEO incorporation on the films’ physical and antimicrobial properties was analyzed. Only composite films containing OEO exhibited antibacterial and antifungal activity. Antibacterial activity occurred at low OEO concentration (6.7%), while antifungal effect required higher doses of OEO in the films. Incorporation of oils did not notably affect the water sorption capacity and water vapor barrier properties of S-PVA films, but reduced their transparency and gloss, especially at the highest concentrations. The mechanical response of the S-PVA films was also negatively affected by oil incorporation but this was only relevant at the highest oil ratio (22%). S-PVA films with 6.7% of OEO exhibited the best physical properties, without significant differences with respect to the S-PVA matrix, while exhibiting antibacterial activity. Thus, the use of OEO as a natural antimicrobial incorporated into starch-PVA films represents a good and novel alternative in food packaging applications.

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“…Also Guava and Neem extracts showed higher antimicrobial activity against Gram-negative bacteria such as A. hydrophila (10). …”

Section: Introductionmentioning

confidence: 99%

Antibacterial Activity of Various Plants Extracts Against Antibiotic-resistantAeromonas hydrophila

Laham

Fadel

2014

Jundishapur J Microbiol

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Background:Aeromonas hydrophila cause one of the most important diseases in fishes and lead to economic losses, and may be contaminated human beings.Objectives:The current research aimed to investigate the anti-bacterial activity shown by the extracts prepared from different parts of Olea europea, Myrtus communis, Thymus vulgaris, Rosmarinuis officinalis, and Achillea falcata that grow in Syria against A. hydrophila that causes the most dangerous bacterial diseases in fish.Materials and Methods:The study was performed in four stages: First of all, the presence of A. hydrophila was investigated in 450 Samples of Cyprinus Carpio fish using blood agar, Trypticase soya agar, and Analytical Profile Index (API20E). Secondly, the plants extract was obtained using water, absolute alcohol, then ether using Soxhlet extraction apparatus and rotary vacuum evaporator. Thirdly, the antibacterial activity of some antibiotics on these bacteria was evaluated by disk diffusion method. Finally, the antibacterial effect of the extracts was determined by disk diffusion method.Results:The studied antibiotics showed no antibacterial activity against these bacteria, except amikacin which had an acceptable effectiveness. However, the ethanol extracts of the studied plants revealed different antibacterial effects against A. hydrophila which showed antibiotic resistant. T. vulgaris extract had the strongest effect, whereas O. europea extract had the weakest activity. The water and ether petroleum extracts had no antibacterial activities.Conclusions:Ethanol extracts of the studied plants had different antibacterial effects against antibiotic-resistant A. hydrophila. T. vulgaris had the highest activity, R. officinalis had the second, and M. communis and A. falcate were in the third place, while the O. europea had the weakest antibacterial activity.

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Antibacterial Activity of Guava (Psidium guajavaL.) and Neem (Azadirachta indicaA. Juss.) Extracts Against Foodborne Pathogens and Spoilage Bacteria

Cited by 106 publications

References 23 publications

Phenolic Compounds and In Vitro Antibacterial and Antioxidant Activities of Three Tropic Fruits: Persimmon, Guava, and Sweetsop

Phenolic Compounds and In Vitro Antibacterial and Antioxidant Activities of Three Tropic Fruits: Persimmon, Guava, and Sweetsop

Physical and Antimicrobial Properties of Starch-PVA Blend Films as Affected by the Incorporation of Natural Antimicrobial Agents

Antibacterial Activity of Various Plants Extracts Against Antibiotic-resistantAeromonas hydrophila

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