Glandular Trichomes and Essential Oil Composition of Endemic Sideritis italica (Mill.) Greuter et Burdet from Central Italy

2011 ◽  
Vol 8 (12) ◽  
pp. 2179-2194 ◽  
Author(s):  
Claudia Giuliani ◽  
Laura Maleci Bini ◽  
Fabrizio Papa ◽  
Gloria Cristalli ◽  
Gianni Sagratini ◽  
...  
Keyword(s):  
Essential Oil ◽  
Glandular Trichomes ◽  
Central Italy ◽  
Essential Oil Composition ◽  
Oil Composition

Essential Oil Composition ofEphedra nebrodensisTineo ex Guss. subsp.nebrodensisfrom Central Italy

2010 ◽  
Vol 22 (4) ◽  
pp. 354-357 ◽  
Author(s):  
Filippo Maggi ◽  
Domenico Lucarini ◽  
Bruno Tirillini ◽  
Sauro Vittori ◽  
Gianni Sagratini ◽  
...  
Keyword(s):  
Essential Oil ◽  
Central Italy ◽  
Essential Oil Composition ◽  
Oil Composition

scholarly journals Essential Oil Composition and Antimicrobial Activity of Aerial Parts and Ripe Fruits of Echinophora spinosa (Apiaceae) from Italy

2013 ◽  
Vol 8 (4) ◽  
pp. 1934578X1300800
Author(s):  
Daniele Fraternale ◽  
Salvatore Genovese ◽  
Donata Ricci
Keyword(s):  
Antimicrobial Activity ◽  
Candida Albicans ◽  
Chemical Composition ◽  
Essential Oil ◽  
Intestinal Microflora ◽  
Central Italy ◽  
Essential Oil Composition ◽  
Oil Composition ◽  
Aerial Parts ◽  
Eubacterium Limosum

The chemical composition and antimicrobial activity of the essential oils obtained from the flowering aerial parts and ripe fruits of Echinophora spinosa L. (Apiaceae) from central Italy were analyzed by GC/MS. The major constituents of the oil from the aerial parts were β-phellandrene (34.7%), myristicin (16.5%), δ3-carene (12.6%), α-pinene (6.7%) and α-phellandrene (6.2%), and of the oil from the ripe fruits p-cymene (50.2%), myristicin (15.3%), α-pinene (15.1%) and α-phellandrene (8.1%). The two oils showed good antimicrobial activity against Clostridium difficile, C perfringens, Enterococcus faecalis, Eubacterium limosum, Peptostreptococcus anaerobius and Candida albicans with MIC values respectively of 0.25, 0.25, 0.25, 0.25, 2.25, and 0.50%, v/v, and 0.13, 0.13, 0.13, 0.13, 2.25, 0.50%, v/v, for aerial parts and ripe fruits respectively. A less significant antimicrobial activity against bifidobacteria and lactobacilli, very important in the intestinal microflora, was also detected, with MIC values higher than 4.0%, v/v.

Antimicrobial Activity, Essential Oil Composition and Micromorphology of Trichomes of Satureja laxiflora C. Koch from Iran

2004 ◽  
Vol 59 (11-12) ◽  
pp. 777-781 ◽  
Author(s):  
Ali Sonboli ◽  
Alireza Fakhari ◽  
Mohammad Reza Kanani ◽  
Morteza Yousefzadi
Keyword(s):  
Antimicrobial Activity ◽  
Essential Oil ◽  
Glandular Trichomes ◽  
Antimicrobial Property ◽  
Reproductive Organs ◽  
Essential Oil Composition ◽  
Geranyl Acetate ◽  
Native Plant ◽  
Oil Composition ◽  
Total Oil

The antimicrobial activity, essential oil composition and micromorphology of trichomes of Satureja laxiflora C. Koch, a native plant from Iran, were studied. The essential oil was obtained from the aerial parts at the flowering stage by hydrodistillation, and analyzed by GC and GC/MS. Thirty-three compounds representing 99.1% of the total oil were characterized. The major compounds were thymol (63.9%) and γ-terpinene (11.9%) followed by carvacrol (4.8%), p-cymene (3.9%), geraniol (3.2%) and geranyl acetate (3.1%). Furthermore, the essential oil and its three main components were tested against two bacteria and three fungi. The result of the bioassays has been shown that the oil possesses potent antimicrobial property. Chemical studies confirmed that a major portion of this antimicrobial activity is due to thymol present in the oil. Micromorphological analysis by SEM of both vegetative and reproductive organs revealed the presence of abundant sessile capitate and sparse short-stalked glandular trichomes along with retrorse eglandular hairs, giving useful diagnostic characters for identification of this medicinal plant.

Glandular trichomes, histochemical localization of secretion, and essential oil composition inPlectranthus grandidentatusgrowing in Portugal

2013 ◽  
Vol 28 (6) ◽  
pp. 393-401 ◽  
Author(s):  
Luísa Mota ◽  
Ana Cristina Figueiredo ◽  
Luis G. Pedro ◽  
José G. Barroso ◽  
Lia Ascensão
Keyword(s):  
Essential Oil ◽  
Glandular Trichomes ◽  
Essential Oil Composition ◽  
Histochemical Localization ◽  
Oil Composition

Plectranthus madagascariensis: Morphology of the Glandular Trichomes, Essential Oil Composition, and Its Biological Activity

1998 ◽  
Vol 159 (1) ◽  
pp. 31-38 ◽  
Author(s):  
Lia Ascensão ◽  
A. Cristina Figueiredo ◽  
José G. Barroso ◽  
Luis G. Pedro ◽  
Jan Schripsema ◽  
...  
Keyword(s):  
Biological Activity ◽  
Essential Oil ◽  
Glandular Trichomes ◽  
Essential Oil Composition ◽  
Oil Composition

COMPARATIVE STUDY OF LEAF ANATOMY AND ESSENTIAL OILS OF THE HYBRID MENTHA X VILLOSO-NERVATA AND ITS PARENTAL SPECIES M. LONGIFOLIA AND M. SPICATA

1998 ◽  
Vol 46 (1) ◽  
pp. 27-33 ◽  
Author(s):  
Nikos Gavalas ◽  
Artemios Bosabalidis M. ◽  
Stella Kokkini
Keyword(s):  
Essential Oil ◽  
Essential Oils ◽  
Leaf Surface ◽  
Parental Species ◽  
Glandular Trichomes ◽  
Essential Oil Composition ◽  
Oil Composition ◽  
Lower Leaf Surface ◽  
Palisade And Spongy Parenchyma ◽  
Derivatives Of

Leaves of the hybrid Mentha x villoso-nervata are covered with nonglandular trichomes of intermediate length between those of its parental taxa M. longifolia and M. spicata. Glandular trichomes producing essential oils are more numerous on the lower leaf surface than on the upper one in all three mints. Their number per mm2 is higher in M. spicata and it decreases in M. longifolia and M. x villoso-nervata. Stomata are also more numerous on the lower leaf surface of the three taxa, with M. longifolia predominating. The leaf lamina of M. x villoso-nervata is ca. 83% thicker than that of M. longifolia and ca. 9% thicker than that of M. spicata. The number of chloroplasts per mm2 of mesophyll section (leaf cross section) is higher in M. X villoso-nervata. In leaf paradermal sections, the sizes of the epidermal, palisade, and spongy parenchyma cells of M. X villoso-nervata have intermediate values between those of its parental species M. longifolia and M. spicata. M. x villoso-nervata leaves are the lowest in essential oil content. As concerns the essential oil composition, the hybrid resembles one parent, M. longifolia, in the derivatives of piperitenone and piperitone, and the other parent, M. spicata, in the high amount of limonene. It differs, however, from its parental species in that it contains a higher amount of germacrene D.

scholarly journals Population variability in Thymus glabrescens Willd. from Serbia: Morphology, anatomy and essential oil composition

2008 ◽  
Vol 60 (3) ◽  
pp. 475-483 ◽  
Author(s):  
Zora Dajic-Stevanovic ◽  
I. Sostaric ◽  
P.D. Marin ◽  
D. Stojanovic ◽  
M. Ristic
Keyword(s):  
Essential Oil ◽  
Morphological Traits ◽  
Leaf Surface ◽  
Glandular Trichomes ◽  
Essential Oil Composition ◽  
Indigenous Populations ◽  
Oil Composition ◽  
Stem Anatomy ◽  
Essential Oil Yield ◽  
Leaf Morphological Traits

In five indigenous populations of Thymus glabrescens Willd. collected in the region of Banat (Serbia), the variability on leaf morphological traits, leaf and stem anatomy, and composition of the essential oil was studied. The major component in the studied populations was either thymol or ?-terpinene. Distinct differentiation of populations with respect to chemical composition of essential oils might be related to spatial distribution of the studied populations. No correlations between morphology, anatomy, and essential oil yield and composition were determined. Both capitate and peltate glandular trichomes were found on calyces, whereas the latter were noticed on the abaxial and adaxial leaf surface.

Essential Oil Composition and Glandular Trichomes ofMarrubium vulgareL. Growing Wild in Algeria

2006 ◽  
Vol 18 (4) ◽  
pp. 369-373 ◽  
Author(s):  
Rachid Belhattab ◽  
Larbi Larous ◽  
A. Cristina Figueiredo ◽  
Pedro A.G. Santos ◽  
Monya M. Costa ◽  
...  
Keyword(s):  
Essential Oil ◽  
Glandular Trichomes ◽  
Essential Oil Composition ◽  
Oil Composition
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