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Food preservative potential of essential oils and fractions from Cymbopogon citratus, Ocimum gratissimum and Thymus vulgaris against mycotoxigenic fungi.
Int J Food Microbiol. 2009 May 31; 131(2-3):151-6.IJ

Abstract

The food preservative potential of essential oils from three aromatic plants Cymbopogon citratus, Ocimum gratissimum and Thymus vulgaris and their fractions was investigated against two mycotoxigenic strains each of Aspergillus ochraceus, Penicillium expansum and P. verrucosum. The fungicidal activity was determined and expressed as a Number of Decimal Reduction of the colony forming units per ml (NDR cfu). The influence of pH variation on this activity was studied. The NDR cfu varied with the essential oils and its concentration, the pH of the medium and the strain tested. The essential oils from O. gratissimum exhibited the highest activity against the six fungal strains under the three pH tested. T. vulgaris and C. citratus essential oils were less active against the Penicillium species tested and A. ochraceus, respectively. Potassium sorbate did not present any activity at pH 6 and 9. At pH 3, its NDR cfu was the lowest against the six fungal strains. At the same pH and at 4000 ppm, the three essential oils presented a NRD cfu > or = 6 against strains of A. ochraceus and P. expansum. The same result was obtained with T. vulgaris and C. citratus at 8000 ppm against both strains of P. verrucosum. The highest activity of the three essential oils was recorded at pH 3 against A. ochraceus strains and at pH 9 against both species of Penicillium. From the fractionation, three active fractions were obtained each from C. citratus and O. gratissimum, and two active fractions from T. vulgaris. These active fractions exhibited a NDR cfu, two to seven folds higher than that of the complete essential oils.

Authors+Show Affiliations

Department of Biochemistry, Faculty of Science, University of Yaoundé I, Box 812, Yaoundé, Cameroon. jnguefack@gmail.comNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

19268382

Citation

Nguefack, J, et al. "Food Preservative Potential of Essential Oils and Fractions From Cymbopogon Citratus, Ocimum Gratissimum and Thymus Vulgaris Against Mycotoxigenic Fungi." International Journal of Food Microbiology, vol. 131, no. 2-3, 2009, pp. 151-6.
Nguefack J, Dongmo JB, Dakole CD, et al. Food preservative potential of essential oils and fractions from Cymbopogon citratus, Ocimum gratissimum and Thymus vulgaris against mycotoxigenic fungi. Int J Food Microbiol. 2009;131(2-3):151-6.
Nguefack, J., Dongmo, J. B., Dakole, C. D., Leth, V., Vismer, H. F., Torp, J., Guemdjom, E. F., Mbeffo, M., Tamgue, O., Fotio, D., Zollo, P. H., & Nkengfack, A. E. (2009). Food preservative potential of essential oils and fractions from Cymbopogon citratus, Ocimum gratissimum and Thymus vulgaris against mycotoxigenic fungi. International Journal of Food Microbiology, 131(2-3), 151-6. https://doi.org/10.1016/j.ijfoodmicro.2009.02.009
Nguefack J, et al. Food Preservative Potential of Essential Oils and Fractions From Cymbopogon Citratus, Ocimum Gratissimum and Thymus Vulgaris Against Mycotoxigenic Fungi. Int J Food Microbiol. 2009 May 31;131(2-3):151-6. PubMed PMID: 19268382.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Food preservative potential of essential oils and fractions from Cymbopogon citratus, Ocimum gratissimum and Thymus vulgaris against mycotoxigenic fungi. AU - Nguefack,J, AU - Dongmo,J B Lekagne, AU - Dakole,C D, AU - Leth,V, AU - Vismer,H F, AU - Torp,J, AU - Guemdjom,E F N, AU - Mbeffo,M, AU - Tamgue,O, AU - Fotio,D, AU - Zollo,P H Amvam, AU - Nkengfack,A E, Y1 - 2009/03/04/ PY - 2008/04/10/received PY - 2009/01/27/revised PY - 2009/02/09/accepted PY - 2009/3/10/entrez PY - 2009/3/10/pubmed PY - 2009/8/6/medline SP - 151 EP - 6 JF - International journal of food microbiology JO - Int J Food Microbiol VL - 131 IS - 2-3 N2 - The food preservative potential of essential oils from three aromatic plants Cymbopogon citratus, Ocimum gratissimum and Thymus vulgaris and their fractions was investigated against two mycotoxigenic strains each of Aspergillus ochraceus, Penicillium expansum and P. verrucosum. The fungicidal activity was determined and expressed as a Number of Decimal Reduction of the colony forming units per ml (NDR cfu). The influence of pH variation on this activity was studied. The NDR cfu varied with the essential oils and its concentration, the pH of the medium and the strain tested. The essential oils from O. gratissimum exhibited the highest activity against the six fungal strains under the three pH tested. T. vulgaris and C. citratus essential oils were less active against the Penicillium species tested and A. ochraceus, respectively. Potassium sorbate did not present any activity at pH 6 and 9. At pH 3, its NDR cfu was the lowest against the six fungal strains. At the same pH and at 4000 ppm, the three essential oils presented a NRD cfu > or = 6 against strains of A. ochraceus and P. expansum. The same result was obtained with T. vulgaris and C. citratus at 8000 ppm against both strains of P. verrucosum. The highest activity of the three essential oils was recorded at pH 3 against A. ochraceus strains and at pH 9 against both species of Penicillium. From the fractionation, three active fractions were obtained each from C. citratus and O. gratissimum, and two active fractions from T. vulgaris. These active fractions exhibited a NDR cfu, two to seven folds higher than that of the complete essential oils. SN - 1879-3460 UR - https://www.unboundmedicine.com/medline/citation/19268382/Food_preservative_potential_of_essential_oils_and_fractions_from_Cymbopogon_citratus_Ocimum_gratissimum_and_Thymus_vulgaris_against_mycotoxigenic_fungi_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0168-1605(09)00107-X DB - PRIME DP - Unbound Medicine ER -