The Effect of Non-thermal Processing of Hyssopus officinalis on its Antioxidant and Antimicrobial Activities
Hyssopus officinalis L. is one of the most important medicinal plants. Medicinal herbs are contaminated by microorganisms. Conventional methods for reducing of microbial loads such as ethylene oxide, propylene oxide and also use of steam are hazardous and instead, non-thermal process such as microw...
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2015-02-01
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doaj-7957613281b7437bb5839c24577b48bc2020-11-25T01:52:33ZengIranian Medicinal Plants SocietyJournal of Medicinal Plants and By-products2322-13992588-37392015-02-0142161169108904The Effect of Non-thermal Processing of Hyssopus officinalis on its Antioxidant and Antimicrobial ActivitiesMahboobeh Jamshidi0Mohsen Barzegar1Mohammad Ali Sahari2Department of Food Science and Technology, Faculty of Agriculture, Tarbiat Modares University, Tehran, IranDepartment of Food Science and Technology, Faculty of Agriculture, Tarbiat Modares University, Tehran, IranDepartment of Food Science and Technology, Faculty of Agriculture, Tarbiat Modares University, Tehran, IranHyssopus officinalis L. is one of the most important medicinal plants. Medicinal herbs are contaminated by microorganisms. Conventional methods for reducing of microbial loads such as ethylene oxide, propylene oxide and also use of steam are hazardous and instead, non-thermal process such as microwave and gamma radiation are being used widely in order to eliminate the microbial contaminations with no or a little side effect. In the present study the effect of gamma and microwave irradiation on antioxidant and antimicrobial activities of Hyssopus officinalis L. was investigated. Hyssopus samples were exposed to gamma irradiation at doses 10, 15, 20 and 25 kGy and microwave irradiationat power of 300, 450 and 600 W for 5 min. In order to undergo the sequence experiments, the hydroalcoholic (EtOH 50%) extracts of plant were prepared. The antioxidant activities of irradiated and control samples were evaluated by DPPH radical scavenging (RS), ferric reducing power (FRP), β-carotene bleaching (BCB) and total phenolic content (TPC) of sampels. In order to study the antimicrobial activity, for determination of minimal inhibitory concentration (MIC) on E. coli and S. aureus,broth diluting method was used. Results showed that gamma irradiation had no significant effect on antioxidant parameters, phenolic content and antimicrobial activities of sampels. Microwave treatment of Hyssopus at 300, 450 and 600 W for 5 min increased its antioxidant and antimicrobial activities. Results indicated that gamma and microwave irradiation do not have any negative effect on antioxidant and antimicrobial activities of Hyssopus.http://jmpb.areeo.ac.ir/article_108904_d154cfece1797c68f7bf353a94705331.pdfHyssopus officinalis LGamma irradiationMicrowaveAntioxidant activityAntimicrobial activity |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Mahboobeh Jamshidi Mohsen Barzegar Mohammad Ali Sahari |
spellingShingle |
Mahboobeh Jamshidi Mohsen Barzegar Mohammad Ali Sahari The Effect of Non-thermal Processing of Hyssopus officinalis on its Antioxidant and Antimicrobial Activities Journal of Medicinal Plants and By-products Hyssopus officinalis L Gamma irradiation Microwave Antioxidant activity Antimicrobial activity |
author_facet |
Mahboobeh Jamshidi Mohsen Barzegar Mohammad Ali Sahari |
author_sort |
Mahboobeh Jamshidi |
title |
The Effect of Non-thermal Processing of Hyssopus officinalis on its Antioxidant and Antimicrobial Activities |
title_short |
The Effect of Non-thermal Processing of Hyssopus officinalis on its Antioxidant and Antimicrobial Activities |
title_full |
The Effect of Non-thermal Processing of Hyssopus officinalis on its Antioxidant and Antimicrobial Activities |
title_fullStr |
The Effect of Non-thermal Processing of Hyssopus officinalis on its Antioxidant and Antimicrobial Activities |
title_full_unstemmed |
The Effect of Non-thermal Processing of Hyssopus officinalis on its Antioxidant and Antimicrobial Activities |
title_sort |
effect of non-thermal processing of hyssopus officinalis on its antioxidant and antimicrobial activities |
publisher |
Iranian Medicinal Plants Society |
series |
Journal of Medicinal Plants and By-products |
issn |
2322-1399 2588-3739 |
publishDate |
2015-02-01 |
description |
Hyssopus officinalis L. is one of the most important medicinal plants. Medicinal herbs are contaminated by microorganisms. Conventional methods for reducing of microbial loads such as ethylene oxide, propylene oxide and also use of steam are hazardous and instead, non-thermal process such as microwave and gamma radiation are being used widely in order to eliminate the microbial contaminations with no or a little side effect. In the present study the effect of gamma and microwave irradiation on antioxidant and antimicrobial activities of Hyssopus officinalis L. was investigated. Hyssopus samples were exposed to gamma irradiation at doses 10, 15, 20 and 25 kGy and microwave irradiationat power of 300, 450 and 600 W for 5 min. In order to undergo the sequence experiments, the hydroalcoholic (EtOH 50%) extracts of plant were prepared. The antioxidant activities of irradiated and control samples were evaluated by DPPH radical scavenging (RS), ferric reducing power (FRP), β-carotene bleaching (BCB) and total phenolic content (TPC) of sampels. In order to study the antimicrobial activity, for determination of minimal inhibitory concentration (MIC) on E. coli and S. aureus,broth diluting method was used. Results showed that gamma irradiation had no significant effect on antioxidant parameters, phenolic content and antimicrobial activities of sampels. Microwave treatment of Hyssopus at 300, 450 and 600 W for 5 min increased its antioxidant and antimicrobial activities. Results indicated that gamma and microwave irradiation do not have any negative effect on antioxidant and antimicrobial activities of Hyssopus. |
topic |
Hyssopus officinalis L Gamma irradiation Microwave Antioxidant activity Antimicrobial activity |
url |
http://jmpb.areeo.ac.ir/article_108904_d154cfece1797c68f7bf353a94705331.pdf |
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