Spice oil nanoemulsions: Potential natural inhibitors against pathogenic E. coli and Salmonella spp. from fresh fruits and vegetables

Amrutha, Balagopal; Sundar, Krishnan; Shetty, Prathapkumar Halady

doi:10.1016/j.lwt.2017.01.031

Cited by 36 publications

(13 citation statements)

References 25 publications

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“…On the other hand, (Hyldgaard et al, 2012); Irkin and Korukluoglu (2009) found that CEO actively inhibited yeast and, to lesser extent, L. mono-cytogenes and other bacteria. Likewise a recent paper from Amrutha, Sundar, and Shetty (2017) found that CEO eff ectively reduced quorum regulated phenotypes in S. enterica such as bacterial swimming, swarming and biofilm formation along with reduction in exopoly-saccharide EPS production. Moreover, Saǧdiç, Karahan, Özcan, and Özkan (2003) demonstrated that C. cyminum had no activity against S. aureus and S. enteritidis.…”

Section: Discussionmentioning

confidence: 77%

Chemical composition and antimicrobial activity of essential oils from Cuminum cyminum L. collected in different areas of Morocco

et al. 2018

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Essential oils from 8 Cuminum cyminum local populations collected in Morocco were investigated for their chemical composition and antimicrobial activity. The chemical composition, investigated by gas chromato-graphic technique, revealed a common fingerprint in all Moroccan samples: twenty-five compounds were identified with-terpinen-7-al being the major component in all samples studied. The antimicrobial activity of cumin essential oils were tested against 10 bacterial strains, belonging to 8 diff erent species, and 6 yeast strains, belonging to 4 species. Lactic acid bacteria showed a good resistance to all essential oil tested while overall the cumin essential oils showed a strong antifungal activity that aff ected both maximum specific growth rate and lag time.

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Section: Discussionmentioning

confidence: 77%

Chemical composition and antimicrobial activity of essential oils from Cuminum cyminum L. collected in different areas of Morocco

et al. 2018

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“…In a different study, cumin oil NE exhibited 42.2% inhibition of violacein production at 40 μl/ml, whereas pepper oil showed 15.8% inhibition at 50 μl/ml. In that case, cumin EO NE showed higher bioactivity than pepper EO NE ( 64 ).…”

Section: Resultsmentioning

confidence: 95%

Rheological Behavior, Antimicrobial and Quorum Sensig Inhibition Study of an Argentinean Oregano Essential Oil Nanoemulsion

et al. 2020

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In this study, Argentinean oregano essential oil (OEO) nanoemulsions (NEs) were developed. Four NEs were prepared: a control (CNE), EONE1 (10.6 mg EO/g NE), EONE2 (106 mg EO/ g NE), and EONE3 (160 mg EO/g NE) and tested for antimicrobial activity against Staphylococcus aureus ATCC 13565, Listeria monocytogenes Scott A, Pseudomonas aeruginosa ATCC 14213, and Escherichia coli O157:H7 using a broth microdilution assay and quorum sensing inhibition in a model using Chromobacterium violaceum ATCC 12472, where the production of violacein was quantified. The chemical composition of the EO was determined by gas chromatography–mass spectrometry. The average particle size (nm) and polydispersity index were monitored over 14 days at two different storage temperatures (4 and 23°C). A rheological behavior study was carried out using a dynamic shear rheometer, and flow curves, as well as viscoelastic properties, were determined. E. coli and L. monocytogenes were the most sensitive microorganisms to EONE (MIC of 2 and 5 mg/ml for EOEN3). Sub-MICs for NE were found at lower concentrations than those for pure EO. A significant reduction in violet pigment intensity and colorless coloration ( p < 0.05) were observed at different NE concentrations concerning the control sample. The flow behavior index ( n ) decreased, and the consistency index (k) increased when the EO concentration was increased. CNE, EONE1, and EONE2 showed liquid-like behavior (G′ < G″) in the low-frequency region, whereas a solid-like behavior (G′ > G″) was observed in the high-frequency region, presenting a viscoelastic behavior, appearing as a wormlike micellar solution. For EONE3, a strong increase in both moduli was observed with increasing OEO concentration. The G′ was about one order of magnitude higher than the G″ over the whole frequency range, indicating the presence of a gel-like structure. The incorporation of EOs into an NE increased their stability, lowering the particle size, leading to a wormlike micelle with higher viscosity. Moreover, this NE had good antimicrobial activity and novel quorum-sensing inhibition activity. The results of this study indicated that Argentinean OEO NE could be used in a food system as a natural and stable antimicrobial agent.

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“…Mehmood et al, in 2017, reported the optimum method to synthesis olive nano essential oil that produced the essential oil nanoparticles with a particle size of 151.68 nm [15]. Amrutha et al, in 2017, reported the synthesis of nano essential oil from Cuminum cynium and Pepper (Piper nirgrum). These essential oils were used in ultrasound to inhibit the activity of E. coli and S. enteria [16].…”

Section: ■ Introductionmentioning

confidence: 99%

“…Amrutha et al, in 2017, reported the synthesis of nano essential oil from Cuminum cynium and Pepper (Piper nirgrum). These essential oils were used in ultrasound to inhibit the activity of E. coli and S. enteria [16].…”

Section: ■ Introductionmentioning

confidence: 99%

Orange Peel Essential Oil Nanoemulsions Supported by Nanosilver for Antibacterial Application

et al. 2020

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This study is devoted to the synthesis of King Orange peel essential oil in water nanoemulsions combined with nanosilver by ultrasonic method supported by mechanical stirring for antibacterial application. The samples were characterized by Gas chromatography-mass spectrometry (GC-MS), Ultraviolet-visible (UV-Vis), Transmission electron microscopy (TEM), and Dynamic light scattering (DLS) methods. According to the above-experimental results, it was found that the emulsions based on orange essential oil (without nanosilver) and the ones combined with nanosilver have the average particle size from 66.2 nm and 42.9 nm, respectively. The obtained nanoemulsions were also tested to examine their antibacterial ability against Escherichia coli (E. coli) by the disc diffusion method. It has been also found that nanoemulsions based on orange essential oil supported by nanosilver have the superior antibacterial ability, compared with individual components of the materials.

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Spice oil nanoemulsions: Potential natural inhibitors against pathogenic E. coli and Salmonella spp. from fresh fruits and vegetables

Cited by 36 publications

References 25 publications

Chemical composition and antimicrobial activity of essential oils from Cuminum cyminum L. collected in different areas of Morocco

Chemical composition and antimicrobial activity of essential oils from Cuminum cyminum L. collected in different areas of Morocco

Rheological Behavior, Antimicrobial and Quorum Sensig Inhibition Study of an Argentinean Oregano Essential Oil Nanoemulsion

Orange Peel Essential Oil Nanoemulsions Supported by Nanosilver for Antibacterial Application

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