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Antimicrobial activity of celery fruit isolates and SFE process modeling

Paper ID Volume ID Publish Year Pages File Format Full-Text
4352 222 2008 5 PDF Available
Title
Antimicrobial activity of celery fruit isolates and SFE process modeling
Abstract

The antimicrobial activity of celery fruit essential oil obtained by supercritical fluid extraction with carbon dioxide and by hydrodistillation was investigated against Staphylococcus aureus, Listeria monocytogenes and Listeria ivanovii strains, isolated from victuals of animal origin and from clinical specimens. The supercritical extract was moderately or much more effective than the essential oil obtained by hydrodistillation against almost all the investigated strains, except in the case of one Listeria strain originating in minced meat, where the MIC values were identical. For two S. aureus strains originating in minced meat, supercritical extract had very strong antimicrobial activity, with MIC values of ≤40 μg/ml. The chemical composition of the supercritical extract as well as of the oil obtained by hydrodistillation of dried fruits was analyzed. Qualitative and quantitative analyses were performed using GC/FID and GC/MS. The supercritical extract was greatly superior to the oil obtained by hydrodistillation in terms of the concentration and quantity of the isolated bioactive compounds: sedanenolide, sedanolide and 3-n-butylphthalide. The yields of the supercritical extraction and hydrodistillation were 2.74 and 1.63 wt.%, respectively. The process of supercritical fluid extraction was modeled using a model on the secretory structure scale. The modeling results showed good agreement with the experimental data.

Keywords
Supercrirical fluid extraction; Antimicrobial activity; Celery (Apium graveolens); Modeling; Mass transfer; Food engineering
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Publisher
Database: Elsevier - ScienceDirect
Journal: Biochemical Engineering Journal - Volume 42, Issue 2, 1 November 2008, Pages 148–152
Authors
, , , , , , ,
Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us