Effect of Co60 gamma radiation on microbial contamination of Hemidesmus indicus roots: an important herbal drug material

Authors

  • P. RAJESHWARI, A.P. GNANA PRAKASH and K.A. RAVEESHA

Keywords:

Medicinal herbs, Bio-deterioration, Post-harvest management, Microbial decontamination

Abstract

Microbial contamination of herbal materials is an important limiting factor for the production of quality drugs. Hemidesmus indicus roots are widely used as raw material for preparation of many herbal drugs. Present study was carried out to evaluate the effect of Co60 gamma radiation for microbial decontamination of H. indicus roots. Irradiation was done at doses of 1, 2 and 3 kGy (dose rate-9.2 kGy/hour). A total of 17 bacteria and 13 fungi were recorded from the untreated sample. Aspergillus sp. Rhizopus, Cladosporium sp., A. terreus, 11 Gram positive and 5 Gram negative bacteria were recorded from 1 kGy treated sample. Aspergillus sp., Cladosporium sp., A. terreus, 4 Gram positive and 2 Gram negative bacteria were recorded from 2 kGy treated sample. Aspergillus sp., A. terreus and 3 Gram positive bacteria were isolated from 3 kGy treated sample. Radiation treatment at dose of 3 kGy was found to be most effective for microbial decontamination of H. indicus roots.

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Issue

Vol. 69 No. 4s (2016): Indian Phytopathology : Special Issue

Section

Research Articles

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How to Cite

K.A. RAVEESHA, P. R. A. G. P. and. (2016). Effect of Co60 gamma radiation on microbial contamination of Hemidesmus indicus roots: an important herbal drug material. Indian Phytopathology, 69(4s), 280-283. http://epubs.icar.org.in/ejournal/index.php/IPPJ/article/view/71305