Volatile and Non-Volatile Chemical Compounds and Biological Power of the genus Lavandula: Case of two Moroccan Lavenders Lavandula angustifolia Mill. (Cultivated Lavander) and Lavandula pedunculata (Mill.) Cav. (Spontaneous Lavander)

2021 ◽  
Vol 0 (0) ◽  
pp. 0-0
Author(s):  
Fatima Zahrae Radi ◽  
Nadia Zekri ◽  
Aziz Drioiche ◽  
Hannou Zerkani ◽  
Amal Boutakiout ◽  
...  
Keyword(s):  
Chemical Compounds ◽  
Lavandula Angustifolia ◽  
Volatile Chemical Compounds

scholarly journals Composition, biological properties and therapeutic effects of lavender (Lavandula angustifolia L). A review

2014 ◽  
Vol 60 (2) ◽  
pp. 56-66 ◽  
Author(s):  
Renata Prusinowska ◽  
Krzysztof B. Śmigielski
Keyword(s):  
Essential Oil ◽  
Chemical Compounds ◽  
Antimicrobial Activities ◽  
Biological Properties ◽  
Climatic Conditions ◽  
Quantitative Composition ◽  
Therapeutic Effects ◽  
Lavandula Angustifolia ◽  
The Family ◽  
Positive Effect

Abstract Lavender (Lavandula angustifolia) is a shrub of the family Lamiaceae, native to the Mediterranean region. The material used for herbal purposes includes lavender flowers (Lavandula flores) containing essential oil (3%), anthocyanins, phytosterols, sugars, minerals, and tannins. The qualitative and quantitative composition of the essential oil of lavender is variable and depends on genotype, growing location, climatic conditions, propagation, and morphological features. The essential oil contains over 300 chemical compounds. The dominant components are linalool, linalyl acetate, terpinen-4-ol, acetate lavandulol, oci-mene, and cineole. Lavender essential oil has good antioxidant and antimicrobial activities and a significant positive effect on the digestive and nervous systems. Lavender extract prevents dementia and may inhibit the growth of cancer cells, while lavender hydrolate is recommended for the treatment of skin problems and burns.

scholarly journals Host-seeking behavior of the Heterorhabditis amazonensis nematode in response to stimulant sources1

2017 ◽  
Vol 47 (3) ◽  
pp. 265-272
Author(s):  
Vanessa Andaló ◽  
Grazielle Furtado Moreira ◽  
Alcides Moino Junior
Keyword(s):  
Root Exudates ◽  
Spodoptera Frugiperda ◽  
Entomopathogenic Nematodes ◽  
Feeding Activity ◽  
Chemical Compounds ◽  
Volatile Chemicals ◽  
Tomato Seedlings ◽  
Host Seeking ◽  
Seeking Behavior ◽  
Volatile Chemical Compounds

ABSTRACT Several species of entomopathogenic nematodes have different host-seeking methods, and could be considered as "ambusher" or "cruiser". These differences may depend on how the nematodes detect the volatile signals used as cues for foraging. This study aimed to evaluate the locomotor response of Heterorhabditis amazonensis RSC5 to the compounds from root exudates of different plants, as well as to stimulants produced by the presence of insects or to the feeding activity of insects on plants. Arenas with agar-water substrates, containing root exudates from corn, bean, soybean, cucumber, garlic and tomato seedlings, were assembled to determine the substrates possibly preferred by H. amazonensis.Arenas with sand were also constructed to include, besides the seedling root exudates, treatments containing Spodoptera frugiperda, garlic seedlings and S. frugiperda feeding on garlic seedlings. The H. amazonensis species was attracted to the volatile chemicals emitted by all the root exudates tested, especially the exudate from garlic seedlings. However, it showed the greatest attraction to the combination of garlic seedlings and S. frugiperda, indicating that the search of H. amazonensis for its host is enhanced by the association between the insect and the volatile chemical compounds produced by plants, when attacked by insects.

Volatile Chemical Compounds in Dry-Cured Hamsb

1964 ◽  
Vol 29 (2) ◽  
pp. 123-129 ◽  
Author(s):  
HERBERT W. OCKERMAN ◽  
THOMAS N. BLUMER ◽  
H. BRADFORD CRAIG
Keyword(s):  
Chemical Compounds ◽  
Volatile Chemical Compounds

scholarly journals Antifungal efficacy of Moringa oleifera leaf and seed extracts against Botrytis cinerea causing gray mold disease of tomato (Solanum lycopersicum L.)

2020 ◽  
Author(s):  
T. Ahmadu ◽  
K. Ahmad ◽  
S. I. Ismail ◽  
O. Rashed ◽  
N. Asib ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Mass Spectrometry ◽  
Growth Inhibition ◽  
Botrytis Cinerea ◽  
Mycelial Growth ◽  
Leaf Extract ◽  
Moringa Oleifera ◽  
Chemical Compounds ◽  
Volatile Chemical Compounds ◽  
Chemical Fungicides

Abstract Drawbacks associated with the use of chemical fungicides to control plant pathogenic fungi such as Botrytis cinerea stimulate the need for alternatives. Therefore, the present study was carried out to determine the antifungal potentials of Moringa oleifera extracts against B. cinerea. Phytochemical analysis using qualitative chemical tests revealed the presence of huge amount of crucial phytochemicals compounds like phenolic compounds, alkaloids and saponins in the M. oleifera leaf extract. Antifungal bioassay of the crude extracts indicated better mycelial growth inhibition by methanol leaf extract (99%). The minimum inhibitory concentration (MIC) was 5 mg/ml with 100% spore germination inhibition and minimum fungicidal concentration (MFC) was 10 mg/ml with 98.10% mycelial growth inhibition using broth micro dilution and poisoned food techniques. Gas chromatography–mass spectrometry (GC-MS) analysis led to the identification of 67 volatile chemical compounds in the leaf extract with 6-decenoic acid (Z)- (19.87%) was the predominant compound. Further chemical elucidation of the crude extracts performed by liquid chromatography with tandem mass spectrometry (LC-MS/MS) showed the presence of non-volatile chemical compounds, mostly flavones, flavonoids and phenolic acids (i.e. quercetin and kaempferol). Scanning electron microscopy and transmission electron microscopy analysis showed positive effect of M. oleifera leaf extract on the treated conidia and mycelium of B. cinerea. Findings revealed that irreversible surface and ultra-structural changes with severe detrimental effects on conidia and mycelium morphology compared to control treatment. Overall findings suggested that M. oleifera leaf extract is a promising candidate for biological control of fungal pathogens, thus limiting overdependence on chemical fungicides.

Major Volatile Chemical Compounds of Agarwood Oils from Malaysia Based on Z-Score Technique

2015 ◽  
Vol 51 (4) ◽  
pp. 776-779 ◽  
Author(s):  
Nurlaila Ismail ◽  
Nor Azah Mohd Ali ◽  
Mailina Jamil ◽  
Mohd Hezri Fazalul Rahiman ◽  
Mohd Nasir Taib ◽  
...  
Keyword(s):  
Chemical Compounds ◽  
Z Score ◽  
Volatile Chemical Compounds

Cytochemical analysis of mast cell granules after poly-dl-lysine action

1978 ◽  
Vol 36 (2) ◽  
pp. 278-279
Author(s):  
R. Courtoy ◽  
L.J. Simar ◽  
J. Christophe
Keyword(s):  
Mast Cell ◽  
Mast Cells ◽  
Chemical Compounds ◽  
Cellular Membrane ◽  
Thin Sections ◽  
Organic Bases ◽  
Ferric Thiocyanate ◽  
Cytochemical Analysis ◽  
Mast Cell Granule ◽  
Amine Liberation

Several chemical compounds induce amine liberation from mast cells but do not necessarily provoque the granule expulsion. For example, poly-dl-lysine induces modifications of the cellular membrane permeability which promotes ion exchange at the level of mast cell granules. Few of them are expulsed but the majority remains in the cytoplasm and appears less dense to the electrons. A cytochemical analysis has been performed to determine the composition of these granules after the polylysine action.We have previously reported that it was possible to demonstrate polyanions on epon thin sections using a cetylpyridinium ferric thiocyanate method. Organic bases are selectively stained with cobalt thiocyanate and the sulfhydryle groups are characterized with a silver methenamine reaction. These techniques permit to reveal the mast cell granule constituents, i.e. heparin, biogenic amines and basic proteins.

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