Chemical composition and diversity of the essential oils of Juniperus rigida along the elevations in Helan and Changbai Mountains and correlation with the soil characteristics

Relationships of irrigation water and soil physical and chemical characteristics with yield, chemical composition and antimicrobial activity of Damask rose essential oil

“…Differences in the types and numbers of compounds might result from genetic variations or from environmental factors including soil chemical composition [70,71]. Soil chemical composition affects not only the amounts of EOs but also the distribution of the chemotypes and the percentages of the compounds found in EOs because chemical elements enter into the composition of the enzymes that are involved in plant biochemical processes [45,50]. Nonterpenoids (others) and oxygenated monoterpenes were the major constituents of the EOs at all the studied sites.…”

“…Potassium plays a role in almost all plant metabolic processes the most important of which are its effects on growth, enzyme activation, and prevention of energy loss [77]. Potassium seems to be involved in the chemical structure and activation of the enzymes affecting biochemical pathways related to synthesis of active plant ingredients [50,78]. Phosphorus is one of the macro nutrients and significantly contributes to plant growth and EO biosynthesis.…”

“…In plants that produce EOs (complex mixtures of volatile compounds generally produced in the biosynthetic pathways of terpenoids or phenylpropanoids), interactions with the environment usually lead to changes in the compounds found in the EOs and in their contents [48]. These changes may contribute to the evolution of various plant genes that favor adaptation to the environmental conditions at crop sites thus leading to changes in the quantity and quality of the EOs (and hence in their biological activities) [49,50]. Therefore, evaluation of genotypes collected from cultivation locations having different environmental conditions is an important step in Damask rose breeding programs prior to selection of desirable cultivars for commercial production.…”

“…Conversely, dominance of alkanes (e.g., nonadecane and heneicosane, 1-nonadecene, and eicosane) and higher quantities of sesquiterpenes in Eos can be effective factors responsible for the antimicrobial activity of this EO. Many studies have confirmed the strong antimicrobial effects of alkanes and sesquiterpenes[50,103,105]. Diversity in chemical composition of EOs lead to different main activities in relation to possible antimicrobial activities of plant EOs including disruption of the cytoplasmic membrane that disrupt the driving force of protons, electron flow, active transport, and also coagulation of cell contents[106].…”

Anti-Quorum Sensing and Antioxidant Activity of Essential Oils Extracted From Juniperus Species, Growing Spontaneously in Tebessa Region (East of Algeria)

“…16,17 Due to their antimicrobial properties and specific compositions, Juniperus species find numerous applications in traditional medicine, as skin drugs, cosmetics, fragrance, and flavoring, particularly in European cuisine and beverages. [18][19][20][21][22][23] The most common species of Juniperus are Phoenician juniper (Juniperus phoenicea L.) and Cade juniper (Juniperus oxycedrus L.). Both are evergreen, but are quite distinct, with scaled leaves and berrylike fleshy fruits that are a dark red color when ripe for J. phoenicea, and needle-like leaves with brownish or red-brown berries for J. oxycedrus.…”