Abstract
In this paper, we extracted, analyzed and studied the antimicrobial activity of Algerian parsley essential oil on several microbes that cause infectious diseases and its effects on kinetics of lactic acid production by Lactobacillus casei subsp. rhamnosus. The essential oil of parsley (Petroselinum crispum Hoffm) obtained by hydrodistillation was characterized by its physicochemical properties and by its chromatographic profiles. Myristicin and dillapiol were identified by gas chromatography-spectrometry mass (GC/MS). The essential oil showed a high antimicrobial spectrum towards Bacillus cereus and Candida albicans, average effectiveness against Clostridium perfringens, Staphylococcus aureus and Enterococcus faecalis and no influence on Escherichia coli. The key odorant effects of parsley in the growth of Lactobacillus casei subsp. rhamnosus was studied. The results showed that L. rhamnosus can produce up to 10.96 and 13.78 g.L-1 of lactic acid on the control fermentation and on the second fermentation, respectively, characterized by the addition of 20 µL of the essential oil in the growth exponential phase. Key words: Parsley, essential oil, dillapiol, myristicin, antimicrobial activity, Lactobacillus rhamnosus.
Highlights
Essential oil in plants presents great interests in food, pharmaceutical, cosmetic and perfume industries by virtue of their aromatic properties
Myristicin and dillapiol were identified by gas chromatographyspectrometry mass (GC/MS)
The results showed that L. rhamnosus can produce up to 10.96 and 13.78 g.L-1 of lactic acid on the control fermentation and on the second fermentation, respectively, characterized by the addition of 20 μL of the essential oil in the growth exponential phase
Summary
Essential oil in plants presents great interests in food, pharmaceutical, cosmetic and perfume industries by virtue of their aromatic properties. Parsley (Petroselinum crispum Hoffm) belonging to the Apiaceae family is considered as an aromatic and medicinal plant used often in traditional medicine for their diuretic, vermifuge, emmenagogue and purgative properties (Lopez et al, 1999; Marczal et al, 1997). Researches made were related to the study of stigmasterol, stigmasterol palmitate, coumarin, phenol acids, essential oils, carbohydrates and hydroalcohol extracts (Beaux et al, 1997; Harbone and Saleh, 1971; Hegnauer, 1973; Ravid et al, 1983; Tanira et al, 1996; Trenkle, 1971). The natural extracts stemming from this plant contain a variety of
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