English

Ampasavate Chadarat,Klayraung Srikanjana,Prakatthagomol Waranee,Okonogi Siriporn

doi:10.5897/ajmr10.396

Abstract

During January-February 2010, a black root rot (BRR) disease of carrot (Daucus carotaL.) was observed in vegetable markets of Riyadh, Saudi Arabia. The recovery ofThielaviopsis basicola from local carrot fields indicated its appearance in propagules ranged between 8.32-10.15 (total count/g soil). This report describes the first evidence of black root rot disease of carrot caused by T. basicola in vegetable markets of Riyadh (Saudi Arabia). Key words: Black root rot disease, Thielaviopsis basicola, Saudi Arabia, Daucus carotaL.

Highlights

Certain food borne diseases are originated from contaminated food by different strains of bacteria
The result of our study presented the advantage of A. galanga oil that had ability to inhibit many Gram negative bacteria including E. coli and S. typhimurium
This paper shows that the essential oil of A. galanga had strong bactericidal activity against both Gram negative and Gram positive bacteria but more potent in Gram negative strains

Summary

Introduction

Certain food borne diseases are originated from contaminated food by different strains of bacteria. These bacteria are directly harmful as pathogens and cause food deterioration and leaching of the toxic substances to human body. Food safety becomes a highly important issue for both consumers and food industries due to the rising number of case reports on food associated infections. A good manufacturing practice has been introduced in food industries in order to control the pathogen level in food products (Fan et al, 2009; Grob et al, 2009). The most effective way to minimize food contaminated by microorganisms is to add an effective antimicrobial agent or a so-called preservative, into food products. The later, for example, the use of potential edible plants is having more increasing interest by consumer because of its less toxic and the

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