Chemical composition, antioxidant and anticholinesterase potentials of essential oil of Rumex hastatus D. Don collected from the North West of Pakistan

Salvia nemorosa L. or wood sage is a rich source of antimicrobial and antioxidant metabolites. Considering the importance of this medicinal plant and phytochemical diversity among its populations for local consumption and breeding porpuses this study was performed to determine and compare essential oil (EO) compositions of sage plants collected from four regions in the northwest of Iran including Ahar, Zonouz, Urmia, and Ardabil at two growth stages (vegetative and flowering) to finally demonstrate the effects of growth and location on EO features. The results showed the EO content of flowers in the studied regions were the highest in comparison with vegetative and flowering stages leaves. The percentage and the number of volatile compositions in the OE of flowers were those that presented the highest quantity. In Zonouz, 87.13% and 12 compositions while in Aahar, 80.20%, and 19 compositions. The lowest percentage and the number of volatile compositions in the OE of the flowers were seen in Urmia, 78.56%, and 13 compositions, while in Ardabil, these numbers were 68.61% and 10 compositions, respectively. Caryophyllene oxide had the highest content in all essential oils extracted, being the highest in the flowering stage leaves of the regions of Zonouz, Ardabil, and Urmia, respectively. In Ahar, unlike other areas, the most significant percentage of this compound was in the leaves of the vegetative stage. The oxygenated sesquiterpenes increased in the EO content of the flowers of the Urmia (46.31%), Ardabil (45.60%) and Zonouz (42.59%) regions. In contrast to other areas, for the Ahar region, the highest amount (36.18%) of oxygenated sesquiterpenes was observed in the EO of the leaves of the flowering stage. It can be concluded that different plant growth stages, plant harvest time, environmental conditions, primary habitat, and differences in climatic conditions can contribute to the concentration, type, and percentage of volatile compounds in the salvia EO.

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Comparative Preservative Potential of Essential Oils of Ocimum gratissimum from Bambili of the North West and Mbonge of the South West Regions of Cameroon on Scomber scombrus

Asian Journal of Biotechnology and Bioresource Technology ◽

10.9734/ajb2t/2021/v7i130092 ◽

2021 ◽

pp. 20-29

Author(s):

Ngwasiri Pride Ndasi ◽

Tsi Celestine Angu ◽

Wilson Agwanande Ambindei ◽

Nantia Akono Edouard ◽

Diane Youmbi Yimta ◽

...

Keyword(s):

Essential Oil ◽

Essential Oils ◽

Thiobarbituric Acid ◽

Salmonella Typhi ◽

The South ◽

North West ◽

The North ◽

West Region ◽

South West

Essential oils serve as a natural alternative to chemical or synthetic antimicrobials and antioxidants to fight against food borne pathogens or spoilage organisms, inhibiting lipid peroxidation and extending the shelf life of fish and other seafood. This study examines the antibacterial properties of essential oils from leaves of Ocimum gratissimum L. from two localities of the North West and South West of Cameroon on some pathogenic spoilage gram negative and positive bacteria isolated from mackerel, and their antimicrobial and antioxidant effectiveness on the fish quality during preservation for one month at -18oC. The plant materials were harvested from Bambili, the North West Region of Cameroon and from Mbonge, the South West Region of Cameroon and the essential oils extracted by hydro-distillation using Clevenger-type apparatus. Escherichia coli, Salmonella typhi and Staphylococcus aereus were isolated from mackerel by culture techniques and their susceptibility to the essential oils determined by well diffusion method. Psychrophilic bacteria and Enterobacteraceae counts were used to evaluate the microbiological quality of the fish during storage. Total volatile basic nitrogen and thiobarbituric acid reactive substance assays were used as indices to assess the biochemical quality of the fish during storage. Antibacterial susceptibility test showed that essential oils of O. gratissimum from the North West and South West Regions were active on all the tested microorganisms with different degree.The inhibitory diameters for essential oil from the South West Region were 28.0 mm, 27.2 mm and 26.0 mm while that for essential oil from the Bambili were 24.1 mm, 20.4mm and 21.9 mm for Staphylococcus aereus, Escherichia coli and Salmonella typhi respectively. At the end of storage periods, the values of Psychrotrophs plate counts, total volatile base nitrogen and thiobarbituric acid reactive substances for fish samples treated with essential oil from the Mbonge were 2.71log10cfu/g, 12.88 mgN/100g and 0.88 mgMDA/Kg, while that treated with North West essential oil were 3.00 log10cfu/g, 16.24 mgN/100g and 1.26 mgMDA/Kg respectively. From the obtained results, essential oil of O. gratissimum from the Mbonge was the most effective in preserving Atlantic mackerel.

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Ecological factors, chemical composition and antibacterial activity of the essential oil from Achillea millefolium L. in the north of Iran

Planta Medica ◽

10.1055/s-2007-986960 ◽

2007 ◽

Vol 73 (09) ◽

Cited By ~ 1

Author(s):

M Mazandarani ◽

B Behmanesh ◽

MB Rezaei ◽

EO Ghaemi

Keyword(s):

Antibacterial Activity ◽

Chemical Composition ◽

Essential Oil ◽

Ecological Factors ◽

Achillea Millefolium ◽

The North ◽

North Of Iran

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Chemical Composition, Antioxidant and Cytotoxic Activities of Essential Oil of the Inflorescence of Anacamptis coriophora subsp. fragrans (Orchidaceae) from Tunisia

Natural Product Communications ◽

10.1177/1934578x1601100640 ◽

2016 ◽

Vol 11 (6) ◽

pp. 1934578X1601100 ◽

Cited By ~ 2

Author(s):

Ridha El Mokni ◽

Saoussen Hammami ◽

Stefano Dall'Acqua ◽

Gregorio Peron ◽

Khaled Faidi ◽

...

Keyword(s):

Chemical Composition ◽

Essential Oil ◽

Radical Scavenging ◽

Carcinoma Cells ◽

Ovarian Cancer Cells ◽

Volatile Components ◽

Cytotoxic Activities ◽

Antiproliferative Effects ◽

North West ◽

Dpph Radical Scavenging

The chemical composition of the essential oil produced by steam distillation of the inflorescences of naturally growing Anacamptis coriophora (L.) R. M. Bateman, Pridgeon & M. W. Chase subsp. fragrans (Pollini) R. M. Bateman, Pridgeon & M. W. Chase (Orchidaceae) from Kroumiria, north-west Tunisia was studied by GC-MS, which led to the identification of 19 volatile components, representing 97% of the oil. The main constituents were methyl-( E)-p-methoxycinnamate (29.3%), 13-heptadecyn-l-ol (18.6%), 2,5-dimethoxybenzyl alcohol (14.1%) and 4-(1,1,3,3-tetramethylbutyl)-phenol (9.0%). DPPH radical scavenging revealed a weak antioxidant activity. In addition, the antiproliferative effects were evaluated on BxPC3 human pancreatic carcinoma cells and on 2008 human ovarian cancer cells showing significant effect. This is the first report of the chemical composition of essential oils obtained from A coriophora subsp. fragrans inflorescences for North Africa. Further studies are needed to understand fully the possible mechanism of action behind the cytotoxic activity of the essential oil.

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Aroma profile of Eucalyptus globulus: collected from North West Karnataka, India

Scientific World ◽

10.3126/sw.v10i10.6870 ◽

2012 ◽

Vol 10 (10) ◽

pp. 89-90 ◽

Cited By ~ 6

Author(s):

RK Joshi

Keyword(s):

Chemical Composition ◽

Essential Oil ◽

Eucalyptus Globulus ◽

Aroma Profile ◽

North West ◽

Monoterpene Hydrocarbons ◽

Scientific World ◽

Total Oil

The chemical composition of the essential oil of the leaves of Eucalyptus globulus (Myrtaceae) grown in North West Karnataka, has been analyzed by GC and GC/MS. Forty-eight constituents were identified, accounting 97.93% of the total oil. The major compounds were á-phellandrene (40.31%), á-pinene (13.71%), â-pinene (13.31%), ã-terpinene (9.61%) and 1,8-cineol (4.96%). The oil was rich in monoterpene hydrocarbons (81.14%). Scientific World, Vol. 10, No. 10, July 2012 p89-90 DOI: http://dx.doi.org/10.3126/sw.v10i10.6870

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