In vitro antimicrobial activity of less-utilized spice and herb extracts against selected food-borne bacteria

Weerakkody, Nimsha S.; Caffin, Nola; Turner, Mark S.; Dykes, Gary A.

doi:10.1016/j.foodcont.2010.04.014

Cited by 146 publications

(90 citation statements)

References 32 publications

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“…Some researchers have reported synergistic eff ect of naturally occurring fl avonoids and other antibacterial agents against resistant strains of bacteria (8,9). Due to the problem of microbial resistance to antibiotics, att ention is given to biologically active components isolated from plant species commonly used in herbal medicine, as they can be used as antimicrobial preparations (10)(11)(12).…”

Section: Effect Of Encapsulation On Antimicrobial Activity Of Herbal mentioning

confidence: 99%

Effect of Encapsulation on Antimicrobial Activity of Herbal Extracts with Lysozyme

Matoušková

Márová

Bokrová

et al. 2016

Food Technol. Biotechnol.

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SummaryResistance of microorganisms to antibiotics has increased. The use of natural components with antimicrobial properties can be of great signifi cance to reduce this problem. The presented work is focused on the study of the eff ect of encapsulation of selected plant and animal antimicrobial substances (herbs, spices, lysozyme and nisin) on their activity and stability. Antimicrobial components were packaged into liposomes and polysaccharide particles (alginate, chitosan and starch). Antimicrobial activity was tested against two Gram-positive (Bacillus subtilis and Micrococcus luteus) and two Gram-negative (Escherichia coli and Serratia marcescens) bacteria. Encapsulation was successful in all types of polysaccharide particles and liposomes. The prepared particles exhibited very good long-term stability, especially in aqueous conditions. Antimicrobial activity was retained in all types of particles. Liposomes with encapsulated herb and spice extracts exhibited very good inhibitory eff ect against all tested bacterial strains. Most of herbal extracts had very good antimicrobial eff ect against the tested Gram-negative bacterial strains, while Gram-positive bacteria were more sensitive to lysozyme particles. Thus, particles with co-encapsulated herbs and lysozyme are more active against diff erent types of bacteria, and more stable and more eff ective during long-term storage. Particles with encapsulated mixture of selected plant extracts and lysozyme could be used as complex antimicrobial preparation with controlled release in the production of food and food supplements, pharmaceutical and cosmetic industries.

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Section: Effect Of Encapsulation On Antimicrobial Activity Of Herbal mentioning

confidence: 99%

Effect of Encapsulation on Antimicrobial Activity of Herbal Extracts with Lysozyme

Matoušková

Márová

Bokrová

et al. 2016

Food Technol. Biotechnol.

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“…Several phytochemical compounds have been investigated for their antibacterial activities [36] and their presence in the tested extract could explain its antibacterial effects. The contradictions in bacterial susceptibility to the extract are due to several reasons e.g., microbial strains, concentrations, species of herbs, extraction processes solvents and antimicrobial assessment techniques [37].…”

Section: Trachyspermum Ammi (%)mentioning

confidence: 99%

Antimicrobial Efficacies, Antioxidant Activity and Nutritional Potentials of Trachyspermum ammi

Hassan¹,

Noreen²,

Rehman³

et al. 2016

Vitam Miner

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Trachyspermum ammi (TA) is a traditional medicinal plant which can be considered as a source of natural antioxidants and can be used for a wide range of infectious diseases. Our objectives were to explore the biochemical efficacies of the aqueous and acetonic extract of TA with special emphasis on antimicrobial and antioxidant activities. Nutritional profile and phytochemical screening were performed by standard methods. The agar well diffusion method was used to assess the antimicrobial activity against ten (10) clinical bacterial strains and five (5) fungal stains. The free radical scavenging activity of the acetonic extract was estimated spectrophotometrically by the 2, 2-diphenyl-1-picrylhydrazyl (DPPH) assay. In seeds of TA, the crude fat, crude fiber, vitamin C, moisture, ash contents, crude protein, TSS, total acidity, pH and total sugar were 4.6 ± 0.19%, 4.2 ± 0.1%, 13.5 ± 0.7%, 9.5 ± 0.19%, 11.5 ± 1.7%, 1.46 ± 0.2%, 1.1 ± 0.01%, 0.65 ± 0.01%, 5.75 ± 0.9% and 5.1 ± 0.9% respectively. TA tested positive for alkaloids, carbohydrates and sugar, phenolic compounds, flavonoids, protein and amino acid, gum and mucilage and tannins, while negative results were found for saponins. Antioxidant assessments by DPPH assay showed that acetonic extract of TA possess high radical-scavenging activity i.e., 71.0 ± 2.3%. Vitamin C was used as reference standard. Susceptibility testing of acetonic extract of TA revealed strong antibacterial activity against Staphylococcus aureus (zone of growth inhibition 13 mm), good activity against Salmonella typhi and Xanthomonas (with zone diameter of 12 mm), while TA was least active against Salmonella heidelberg (inhibition zone diameter of 5 mm), Klebsiella pneumoniae and Clostridium with 6 mm zone of inhibition. TA also exhibited maximum antifungal activity against Aspergillus niger (15 mm) and Entomola (11 mm). While least activity was observed against A. flavus and Alternaria alternata (inhibition zone diameter of 9 mm, each). Based on the experimental data, TA could be considered as a therapeutic agent to inhibit the free radical-mediated reactions in biological systems. However further molecular studies and mechanistic insights are needed.

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“…Medicinal and aromatic plants are sources of essential oils, pharmaceuticals, colorants, dyes, cosmetics, and biocides (Lubbe and Verpoorte, 2011). These medicinal plants have wide applications in industry as antioxidants (Puangpronpitag and Sittiwet, 2009) and antimicrobials (Weerakkody et al, 2010). The extracts of different parts of various plant species have antioxidant properties (Sulaiman and Ooi, 2012;Nair et al, 2012;Jaberian et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Antibacterial activity of leaf extract of Breonadia salicina (Rubeaceae), an endangered medicinal plant of Saudi Arabia

Al‐Qurainy¹,

Gaafar²,

Khan³

et al. 2013

Genet. Mol. Res.

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ABSTRACT. Wild plants can contain bioactive compounds with potential activity against disease-causing microorganisms. In the Kingdom of Saudi Arabia, there are many plant species that may have antibacterial, antifungal, or antiviral activities, among other properties. We extracted bioactive compounds with methanol as well as with water from leaves of Breonadia salicina, which is an endangered plant found in the wild in Saudi Arabia. These extracts were tested against the bacteria Bacillus subtilis, Pseudomonas aeruginosa, Shigella sonnei, Escherichia coli, and Staphylococcus aureus. Both extracts showed antibacterial activity against all of the microorganisms, and thus, B. salicina leaf extract has potential as an antimicrobial agent for the preservation of foods, instead of synthetic chemical compounds. We found that the methanolic leaf extract was more effective than the aqueous crude extract against B. subtilis, P. aeruginosa, and S. aureus.

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In vitro antimicrobial activity of less-utilized spice and herb extracts against selected food-borne bacteria

Cited by 146 publications

References 32 publications

Effect of Encapsulation on Antimicrobial Activity of Herbal Extracts with Lysozyme

Effect of Encapsulation on Antimicrobial Activity of Herbal Extracts with Lysozyme

Antimicrobial Efficacies, Antioxidant Activity and Nutritional Potentials of Trachyspermum ammi

Antibacterial activity of leaf extract of Breonadia salicina (Rubeaceae), an endangered medicinal plant of Saudi Arabia

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