摘要:

Twenty two naturally occurring monoterpenoid compounds were selected for antifungal evaluation against two of the most common postharvest pathogens on temperate fruits,Botrytis cinereaandMonilinia fructicola.Experiments were carried out in order to examine the separate effects of these compounds on spore germination and mycelial growth. The growth inhibition test was conducted by incorporating the compounds into the medium, or by exposing the fungi to the vapor of the monoterpenoids. The results showed that carvacrol and thymol, the only two phenolic monoterpenoids, were the most potent inhibitors to the two pathogens in the germination and growth inhibition tests. Both of the compounds completely prevented the spore germination and mycelial growth ofB. cinereaandM. fructicolaat 100 μg/mL. Even at 10 μg/mL medium (0.25 mg/petri dish) in the volatility test, carvacrol and thymol had 85% and 82% inhibition at 48 h againstB. cinerea, and 38% and 57% againstM. fructicola, respectively. Other monoterpenoids such as eugenol, citronellol, geraniol, citral, (—)-perillaldehyde, citronellal, (—)-perillyl alcohol and (—)-menthol were good growth inhibitors (by contact) although their activities toward the two pathogens were slightly different, with higher inhibition found against theM. fructicola.

ISSN:1041-2905    

DOI:10.1080/10412905.2000.9712057

出版商:Taylor & Francis Group    

年代:2000

数据来源: Taylor

摘要:

Shoot oil ofTanacetum annuumwas examined by GC and GC/MS and found to contain sabinene (22.3%) and camphor (13.2%) as major constituents. This oil was screened for its antifungal activity againstBotrytis cinerea, Helminthosporium oryzae, Alternaria solani, Piricularia oryzaeandVerticillium dahliae. T. annuumoil exhibited the strongest fungitoxicity by completely inhibiting the mycelial growth of each of the fungi at 5000 ppm.

ISSN:1041-2905    

DOI:10.1080/10412905.2000.9712058

出版商:Taylor & Francis Group    

年代:2000

数据来源: Taylor

摘要:

The rose Bengal photosensitized oxidation of the (+) and (−) stereoisomers of α-pinene, β-pinene and limonene has been optimized to produce sufficient quantities of hydroperoxides for antimicrobial screening. Experimental conditions allowed the production of highly concentrated solutions of hydroperoxides (approximately 2 M, approximately 30 w%). The antimicrobial activity of each hydroperoxide solution was evaluated by measuring their minimum inhibitory concentration (MIC) (1,2). All the hydroperoxides behave as powerful antimicrobial agents (similar to hydrogen peroxide). The MIC values were almost independent of the nature of the parent terpene but depended of the nature of the bacterial colony (five conventional families, met in human pathologies, were tested).

ISSN:1041-2905    

DOI:10.1080/10412905.2000.9712059

出版商:Taylor & Francis Group    

年代:2000

数据来源: Taylor

ISSN:1041-2905    

DOI:10.1080/10412905.2000.9712060

出版商:Taylor & Francis Group    

年代:2000

数据来源: Taylor

ISSN:1041-2905    

DOI:10.1080/10412905.2000.9712026

出版商:Taylor & Francis Group    

年代:2000

数据来源: Taylor