Effect of Variable Physical Factors on the Toxicity of Plant Volatiles Against Some Aspergillus Spp.

Abhay K. Pandey, Pooja Singh, Uma T. Palni, Nijendra N. Tripathi

Abstract


The objective of the present study is to investigate the effect of physical factors on mycotoxic potency of Chenopodium ambrosioides Linn. and Clausena pentaphylla (Roxb.) DC oils against four species of Aspergilli such as A. flavus Link, A. niger van Tieghem, A. ochraceus Wilhelm, A. terreus Thom causing post-harvest deterioration of pigeon pea seeds. During experimentation it was observed that the potency of both oils remained unchanged even against heavy inoculum dose (maximum number of 10 fungal discs and diameter of 25 mm). Furthermore, the toxicity of both the oils did not alter even up to 120 ºC of temperature and 12 months of storage by exhibiting 100% mycelial inhibition of test fungi.  The toxicity of both the oils was decreased at alkaline pH (7, 8).  Physicochemical characterization of oils revealed that C. ambrosioides oil was pale yellow in colour, lighter than water, laevorotatory, acidic in nature and showed positive test for phenols. While the oil of C. pentaphyllahad light pale color, dextrorotatory, slightly acidic and showed presence of phenols.  Both the oils showed good solubility in various organic solvents 

Keywords


Aspergillus spp.; Chenopodium ambrosioides; Cluasena pentaphylla; Essential oils; Physical factors; Physico-chemical properties

References


Bocher, O.E. 1938. Antibiotics: In Modern Methods of Plant analysis eds. Peach K & Tracey MV vol III Springer verlog, Berlin. Pp 651.

Dixit, A., A.K. Singh and A.K. Dixit. 1981. Effect of pH on fungitoxic activity of some essential oils. Journal of Antibacterial Antifungal Agents. 9: 9-10.

Grover, R.K. and J.D. Moore. 1962. Toximetric studies of fungicides against brown rot organism Sclerotinia fructicola and S. laxa. Phytopathology. 52: 876-880.

Hood, J.R., H.M.A. Cavanaghand and J.M. Wilkinson. 2004. Effect of essential oil concentration on the pH of nutrient and iso-sensitest broth. Phytotherapy Research. 18: 947-949.

Kumar, R., A.K. Mishra, N.K. Dubey and Y.B. Tripathi. 2007. Evaluation of Chenopodium ambrosioides oil as a potential source of antifungal, antiaflatoxigenic and antioxidant activity. International Journal of Food Microbiology. 115: 159-164.

Lalitha, V. and K.A. Raveesha. 2006. Fungitoxicity of some essential oils against important seed borne pathogens of paddy. Plant Disease Research. 21: 155-157.

Langenau, E.E. 1948. The examination and analysis of essential oils, synthetics and isolates. In: The essential oils. Vol.1. Guenther, E. (ed.). Roberts E. Krieger Publishing Co. Huntington, New York. Pp. 227-348.

Pandey, D.K., N.N. Tripathi, R.D. Tripathi and S.N. Dixit. 1982. Fungitoxic and phytotoxic properties of the essential oil of Hyptis suaveolens. Journal of Plant Disease and Protection. 89: 344-349.

Rehman, S.U., M.M. Ahmad, Z.H. Kazmiand M.S. Raza. 2007. Physico-chemical variations in essential oils of Citrus reticulata. Journal of Food Science and Technology. 44: 353-356.

Shahi, S.K., A.C. Shukla, and A. Dixit. 1999. Antifungal studies of some essential oils at various pH levels for betterment of antifungal drug response. Current Science. 77: 703-706.

Shukla, A.C. 2009. Volatile oil of Cymbopogon pendulus as an effective fumigant pesticide for the management of storage-pests of food commodities. National Academy Science Letter. 32: 51-59.

Wellman, R.H. 1967. Commercial development of fungicides. Hollen et al. (ed.) Plant Pathology Problems and Progress. Indian University Press Allahabad, (1908-1958).


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DOI: 10.33687/phytopath.003.02.0685

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Copyright (c) 2014 Abhay K. Pandey, Pooja Singh, Uma T. Palni, Nijendra N. Tripathi

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