Showing papers on "Eucalyptus oil published in 2014"

Nanoemulsion of eucalyptus oil and its larvicidal activity against Culex quinquefasciatus

Abstract: Filariasis is a mosquito-borne disease that causes lymphedema and the main vector is Culex quinquefasciatus. A simple measure was taken to eradicate the vector using nanoemulsion. Eucalyptus oil nanoemulsion was formulated in various ratios comprising of eucalyptus oil, tween 80 and water by ultrasonication. The stability of nanoemulsion was observed over a period of time and 1:2 ratios of eucalyptus oil (6%) and surfactant (12%) was found to be stable. The formulated eucalyptus oil nanoemulsion was characterized by transmission electron microscopy and dynamic light scattering. The nanoemulsion droplets were found to have a Z-average diameter of 9.4 nm and were spherical in shape. The larvicidal activity of eucalyptus oil nanoemulsion and bulk emulsion was tested and compared. Our nanoemulsion showed higher activity when compared to bulk emulsion. The histopathology of larvae-treated and untreated nanoemulsion was analyzed. Furthermore, biochemical assays were carried out to examine the effect of nanoemulsion on biochemical characteristics of larvae. The treated larval homogenate showed decrease in total protein content and a significant reduction in the levels of acetylcholinesterase. The levels of acid and alkaline phosphatase also showed reduction as compared to control larval homogenate.

Eucalyptus Essential Oil as a Natural Food Preservative: In Vivo and In Vitro Antiyeast Potential

Abstract: In this study, the application of eucalyptus essential oil/vapour as beverages preservative is reported. The chemical composition of eucalyptus oil was determined by gas chromatography-mass spectrometry (GC-MS) and solid phase microextraction GC-MS (SPME/GC-MS) analyses. GC-MS revealed that the major constituents were 1,8-cineole (80.5%), limonene (6.5%), �� -pinene (5%), and�� -terpinene (2.9%) while SPME/GC-MS showed a relative reduction of 1,8-cineole (63.9%) and an increase of limonene (13.8%), �� -pinene (8.87%), and�� -terpinene (3.98%). Antimicrobial potential of essential oil was initially determined in vitro against 8 different food spoilage yeasts by disc diffusion, disc volatilization, and microdilution method. The activity of eucalyptus vapours was significantly higher than the eucalyptus oil. Minimum inhibitory concentration (MIC) and minimum fungicidal concentration (MFC) varied from 0.56 to 4.50 mg/mL and from 1.13 to 9 mg/mL, respectively. Subsequently, the combined efficacy of essential oil and thermal treatment were used to evaluate the preservation of a mixed fruit juice in a time-dependent manner. These results suggest eucalyptus oil as a potent inhibitor of food spoilage yeasts not only in vitro but also in a real food system. Currently, this is the first report that uses eucalyptus essential oil for fruit juice preservation against food spoiling yeast.

Quality assessment of the essential oil from Eucalyptus globulus Labill of Blida (Algeria) origin

Abstract: Despite the reputation earned by aromatic and medicinal plants of Algeria, the chemical constituents of Eucalyptus globulus essential oil (EGEO) of Blida origin has not previously been investigated. Thus, the present study has been conducted for the determination of chemical constituents and different physico-chemical properties of the EGEO. Chemical composition of the EGEO, grown in Algeria, was analysed by Gas Chromatography-Mass Spectrometry. The chemical components were identified on the basis of Retention Time and comparing with mass spectral database of standard compounds. Relative amounts of detected compounds were calculated on the basis of GC peak areas. Fresh leaves of E. globulus on steam distillation yielded 0.96 % (v/w) of essential oil whereas the analysis resulted in the identification of a total of 11 constituents, 1.8 cineole (85.8 %), αpinene (7.2 %), and β-myrcene (1.5 %) being the main components. Other notable compounds identified in the oil were β-pinene, limonene, α-phellandrene, γ-terpinene, linalool, pinocarveol, terpinen-4-ol, and α-terpineol. The physical properties such as specific gravity, refractive index and optical rotation and the chemical properties such as saponification value, acid number and iodine number of the EGEO were examined. The oil extracted has been analyzed to have 1.4602 - 1.4623 refractive index value, 0.918 - 0.919 specific gravity (sp.gr.), +9 - +10 optical rotation that satisfy the standards stipulated by European Pharmacopeia. All the physical and chemical parameters were in the range indicated by the ISO standards. Our findings will help to access the quality of the Eucalyptus oil which is important in the production of high value essential oils that will help to improve the economic condition of the community as well as the nation.

Potential of eucalyptus oil as repellent against house rat, Rattus rattus.

Abstract: Rodent repellents are chemicals which by taste or odour or possibly by both will prevent animal from feeding or gnawing. Such substances may be used in protecting an area from rodent infestation or in protecting packaged food, packing materials, electric cables, and other important vulnerable materials. Mature and healthy house rat, Rattus rattus of both sexes, was exposed to 5, 10, and 20% eucalyptus oil applied as spray in laboratory pens in bichoice tests. Each concentration was applied through three different modes of application, that is, daily, once, and alternatively in a week. Repellent effect of the oil was assessed based on food consumption from treated and untreated sides for four days. In overall, food consumption was significantly (P < 0.0001) low from treatment side compared to the untreated side indicating significant repellent effect of the oil at all the three concentrations tested. Repellent effect of the oil was, however, not found to differ significantly between the two sexes. Percent repellency in both male and female rats was apparently more with daily application of 5 and 10% eucalyptus oil. Present studies reveal the potential of eucalyptus oil in repelling away R. rattus; however, further studies may be conducted to enhance the persistence of repellent effect for longer period of time.

Comparative Behavioral Responses of Pyrethroid–Susceptible and –Resistant Aedes aegypti (Diptera: Culicidae) Populations to Citronella and Eucalyptus Oils

Abstract: The objective of this study was to compare the behavioral responses (contact irritancy and noncontact spatial repellency) between susceptible and resistant populations of Aedes aegypti (L.) (=Stegomyia aegypti) to essential oils, citronella, and eucalyptus, Eucalyptus globulus, extracts, using an excito-repellency test system. N, N-diethyl-meta-toluamide (DEET) was used as the standard reference repellent. Mosquitoes included two long-standing insecticide susceptible colonies (U.S. Department of Agriculture and Bora Bora) and two pyrethroid-resistant populations recently obtained from Phetchabun and Kanchanaburi provinces in Thailand. Both DEET and citronella produced a much stronger excitation ("irritancy") and more rapid flight escape response in both pyrethroid-resistant populations compared with the laboratory populations. Noncontact repellency was also greater in the two resistant populations. Eucalyptus oil was found to be the least effective compound tested. Differences in responses between long-established pyrethroid-susceptible colonies and newly established and naturally resistant colonies were clearly demonstrated. These findings also demonstrate the need for further comparisons using natural pyrethroid-susceptible populations for elucidation of factors that might contribute to different patterns of escape behavior.

Post-emergent herbicidal activity of cineole derivatives

Abstract: Essential oils are being investigated as potential herbicides or to provide leads to new environmentally and socially acceptable herbicides. Novel hydroxy and ester derivatives of 1,8-cineole and 1,4-cineole were synthesised, by chemical and biological methods, and have shown pre-emergence herbicidal activity against annual ryegrass and radish. Effects on post-emergence activity of these derivatives, as well as 1,8-cineole, eucalyptus oil and the carboxylic acids from which the esters were derived, against annual ryegrass and radish, are reported here. Results suggest that reduced root and shoot growth observed in pre-emergence herbicidal bioassays were due to post-emergence activity rather than delayed germination. All tested substances had a dose-dependent, post-emergence herbicidal activity against annual ryegrass and radish with many derivatives showing improved activity relative to 1,8-cineole and high-cineole eucalyptus oil. However, results do not support the postulate that cineole esters would be more active than their respective carboxylic acid and the hydroxy cineole. Phytotoxicity of ester derivatives may be due to metabolic cleavage of the esters to the hydroxy cineole and carboxylic acid within the plant.

Synergistic repellent activity of plant essential oils against Aedes aegypti on rabbit Skin

Abstract: Mosquito-borne diseases are the major causes of mortality particularly in tropics. Due to drug and insecticide resistance, personal protection by use of skin repellents has become a common approach of control. The purpose of the study is to determine if synergy exists between Ocimum basilicum, Azadirachta indica and Eucalyptus citriodora oils. Kinga Mosquito repelling Wax® and Vaseline Pure Petroleum Jelly® were included as positive and negative test control respectively. The results showed that Chrysanthemum cinerariefolium extract had no paralytic effect at 0.002% and 0.005% with mean repellency of 81.58 and 85.94 respectively. Similar observation was shown by 10% Azadirachta indica oil and Kinga with a mean repellency 85.79 and 80.53 respectively. Azadirachta indica oil was then reinforced by addition of Sweet basil oil and Lemon eucalyptus oil. A combination that provides complete protection and displayed mosquito paralysis was obtained. The developed formulation can replace Kinga® and alternative to Chrysanthemum cinerariefolium extract.

Repellent and fumigant activities of Eucalyptus globulus and Artemisia carvifolia essential oils against Solenopsis invicta.

Abstract: The repellent and fumigant activities plant essential oils of Eucalyptus globulus Labill. and Artemisia carvifolia Buch.-Ham. ex Roxb. on red imported fire ants (RIFAs) Solenopsis invicta Buren (Hymenoptera Formicidae) were evaluated by using digging bioassay and feeding/climbing behavior tests. Oil of Eucalyptus and Artemisia (mugwort) showed significant repellency at 100 mg/kg. However, slight digging facilitation was observed at 1 mg/kg. The attack and feeding rates of RIFAs on Tenebrio molitor L. (Co- leoptera Tenebrionidae) daubed with 5 μl of the two essential oils were evaluated. Eucalyptus oil showed a complete repellent ef- fect and prevented RIFA attacks on T. molitor. The time for complete repellency was 16 h. Mugwort oil showed weaker results than Eucalyptus oil. The feeding ability of RIFAs treated with the two essential oils decreased. The feeding, attack, and climbing rates of RIFA were observed 30 min after fumigation with the essential oils. Eucalyptus oil showed a greater effect on the climb- ing rate of RIFAs than mugwort oil. The feeding and attack rates after fumigation with the two essential oils were significantly lower than the control. Eucalyptus and mugwort oils could be used as alternatives to commercial repellents and fumigants.

Evaluation of antibacterial properties of essential oils from clove and eucalyptus

Abstract: Objective: To substantiate the data for naturally available sources of antibacterial and bactericidal agents, this study was undertaken. The specific aim was to analyze antibacterial properties of two essential oils from clove (Eugenia caryophyllata) and Eucalyptus (Eucalyptus globulus) against Sphingobium indicum, Escherichia coli (Gram-negative bacteria) and Staphylococcus aureus, Bacillus subtilis (Gram-positive bacteria), which are clinically significant strains. Methods: The analysis was performed by measuring the zone of inhibition or “halo” using disk diffusion method. Results: Out of two oils used, clove oil was found to be more effective in inhibiting growth of all the four types of bacterial strains used in the study. B. subtilis was the most susceptible bacterial strain to clove oil showing maximum area of 7.54 cm 2 for the halo/zone of inhibition, whereas E. coli was the least susceptible with 5.14 cm 2 area of the halo. Eucalyptus oil inhibited growth in S. indicum and E. coli but the area of inhibition zone was much

Comparative laboratory and field evaluation of repellent formulations containing deet and lemon eucalyptus oil against mosquitoes in Queensland, Australia.

Abstract: A field trial comparing a formulation containing 40% deet (N,N-diethyl-3-methyl benzamide) in ethanol (Bushman) and 32% lemon eucalyptus oil (LEO; Mosi-guard) as protection against mosquitoes at Redcliffe, Queensland, Australia, was conducted in February 2012 and February 2013. The 40% deet formulation provided 100% protection against mosquitoes for 7 h, while the 32% LEO provided >95% protection for 3 h.

Insect repellent compositions

Abstract: The present invention generally includes a blend of a blend of cedar oil, geranium oil, peppermint oil, rosemary oil, and lavender oil together with inert ingredients including water, vegetable glycerin, and isopropyl alcohol. The general mixture is enhanced for use on humans with the addition of clove oil, lemongrass oil, citronella oil, and lemon eucalyptus oil. It is, alternatively enhanced for use on dogs with the addition of soybean oil and thyme oil. Zinc oxide and/or titanium dioxide may also be added to the mixture.

Antimicrobial effect of Carboxy Methyl Cellulose (CMC) containing aqueous and ethanolic Eucalyptus camaldulensis L. leaves extract against Streptococcus pyogenes, Pseudomonas aeruginosa and Staphylococcus epidermidis

Abstract: Oil from the eucalyptus tree ( Eucalyptus camaldulensis L.) is used today in many over the counter cough and cold products, to relieve congestion. Eucalyptus oil is also used in creams and ointments to relieve muscle and joint pain, and in some mouthwashes. In this study Eucalyptus camaldulensis leaves extracted with water and ethanol 96°and the antimicrobial effects of extracts were evaluated by “using the method of Collins” and “disk agar diffusion method”. Antimicrobial properties of Carboxy Methyl Cellulose (CMC) films containing 20, 40, 60, and 80 mg/ml concentration of the extract studied against on Streptococcus pyogenes PTCC 1447, Pseudomonas aeruginosa PTCC 1310 and Staphylococcus epidermidis PTCC 1435. The results showed that aqueous and alcoholic extract were quite effective in 2000 μg/ml concentration on Streptococcus pyogenes and Staphylococcus epidermidis and have inhibition effect, while both extracts have no certain antimicrobial effect on Pseudomonas aeruginosa. Minimum Inhibitory Concentration (MIC) of ethanolic extract of Eucalyptus camaldulensis leaves were performed for each microorganism. Minimal Bactericidal Concentration (MBC) for bacteria was performed using the dilution method. The edible films containing mangrove extract presented more effective impact on the growth of Streptococcus pyogenes than Pseudomonas aeruginosa (p<0.05). The result indicates extracts of Eucalyptus camaldulensis leaves have the greatest effect on gram-positive bacterium Streptococcus pyogenes . As a result, aqueous and ethanloic extracts of Eucalyptus camaldulensis leaves, have been strong antimicrobial activity against many food pathogen bacteria

Mosquito repellent mint paste

Abstract: The invention discloses a mosquito repellent mint paste, which comprises the following raw materials by weight: 14-18% of menthol, 8-12% of mint oil, 14-18% of camphor, 4-6% of dimethyl phthalate, 8-12% of eucalyptus oil, 1-1.4% of clove oil, 1-5% of camphor oil, 0.8-1.6% of cinnamon oil, 1-2% of ammonia water, 13-17% of paraffin and 18-24% of vaseline. The invention has the following beneficial effects: a safe dimethyl phthalate material is added to a conventional cool and refreshing oil to block 1 octene-3-alcohol effect of an insect olfactory receptor through human sweat and breath; the mint paste is developed according to the special physique of African people and the characteristics of tropical rainy climate, field operation and mosquitoes, has the effects of cool and refreshing oil such as prevention of cold, headache, dizziness and carsickness, and refreshing, but also has the effects of repelling insects and preventing mosquito bites, and can effectively eliminate the sense of the insects to special smell of human or animals.

Extracted plant essence ventilation tablet and preparation method thereof

Abstract: The invention relates to the technical field of indoor air regulation products, and in particular discloses an extracted plant essence ventilation tablet and a preparation method thereof. The preparation method comprises the following steps: firstly, mixing 30 parts by volume of mint essential oil (peppermint oil), 20 parts by volume of eucalyptus essential oil (eucalyptus oil), 20 parts by volume of lavender essential oil (lavender oil), 10 parts by volume of citronella essential oil (citronella oil), 10 parts by volume of tea tree essential oil (tea tree oil) and 10 parts by volume of ginger essential oil (ginger oil), to prepare compound plant essential oil, and subsequently feeding the compound plant essential oil into a paper-based carrier by virtue of a quantifying pump, thereby obtaining the extracted plant essence ventilation tablet, wherein a single piece of the table is packaged by using aluminum foil, and is shielded from light to prevent metamorphism and volatilization. The extracted plant essence ventilation tablet disclosed by the invention is mainly used for regulating indoor air, rapidly relieving nasal obstruction and nose running caused by cold and rhinitis, smoothening breath, relieving the pressure and assisting sleep.

Medical ultrasonic coupling agent

Abstract: A medical ultrasonic coupling agent is characterized by mainly comprising eucalyptus oil, honeysuckle flower oil, tenuifolia oil, ligusticum oil, wild ginger oil, flos magnoliae liliflorae oil, elsholtzia oil, clerodendroa cyrtophyllum, rhizoma atractylodis and ageratum. The main components of the coupling agent provided by the invention comprise natural herbal extracts with antibacterial properties, can avoid the occurrence of iatrogenic cross infection in clinical application, and do not cause corrosion and irritation.

EFFICACY OF Eucalyptus ESSENTIAL OIL AGAINST LEAF SPOT (Alternaria solani) of Solanum melongena L.

Abstract: With a view to explore the efficacy of Eucalyptus essential oil against leaf spot (Alternaria solani) of Solanum melongena L., an experiment was conducted in the poly house at Department of Plant Protection SHIATS, Allahabad. Essential oil of Eucalyptus at different concentrations was evaluated against Alternaria solani causing leaf spot of Brinjal. Pathogen was isolated, identified and mass cultured and was artificially inoculated in the soil @40g (8× 10 3 /g of soil). The Brinjal seeds were soaked in Eucalyptus oil at 4 different concentration @1, 2, 3 and 4 % for an hour before 24 hours of sowing and then treated seeds were sown in small fiber cups (100g/cup) in 5 treatments and 6 replication including control. Diseases manifests on 30days old seedling under control characterized by blight, small, circular, brown necrotic leaf spot with a chlorotic halo, which gradually enlarged and coalesced causing withering and shedding of the leaves while in others found less. The results revealed that at 1% and 2% concentration of Eucalyptus oil favoured the growth of plants which were healthy suggesting inhibitory effect of essential oil against disease symptom. However at higher concentration of 3 and 4% essential oil of Eucalyptus it becomes toxic to the growth of plants since plants shows yellowing and stunted growth.

Novel mosquito repellent spray

Abstract: The invention discloses a novel mosquito repellent spray, which is prepared from the following raw materials by weight: 40-60 parts of water, 10-15 parts of sophora flavescens, 6-10 parts of camphor oil, 7-14 parts of aloe juice, 10-13 parts of clove oil, 5-10 parts of a Melia toosendan bark extracted liquid, 7-9 parts of lemon eucalyptus oil, 3-7 parts of cypermethrin, 4-7 parts of wild lemon leaf oil, 3-6 parts of eucalyptus oil, 4-8 parts of tea tree oil, and 3-5 parts of aromatic lavender essential oil. The novel mosquito repellent spray provided by the invention has high mosquito repellent efficiency, comfortable and pleasant fragrance, and no side effect on human body.

Eucalyptus oil solution and preparation method thereof

Abstract: The invention relates to a eucalyptus oil solution for treating animal psoroptic manges and a preparation method thereof, and particularly relates to the eucalyptus oil solution with functions of resisting psoroptic manges of pigs, cows, sheep, rabbits and dogs, and the preparation method thereof. The preparation method comprises the following steps: mixing a stabilizer, a penetrating agent, eucalyptus oil and a solvent, and processing in high-speed mixing and high-pressure homogenization manners. The eucalyptus oil solution has the advantages of being good in preparation stability, high in process repeatability, simple in process, strong in maneuverability, reasonable in cost and the like. The prepared eucalyptus oil solution is colorless and transparent uniform liquid and is convenient to coat or spray, and the defects of low volatility, low adhesive rate and the like in direct use of the eucalyptus oil are avoided. The production practice and veterinary clinical trials show that the eucalyptus oil solution provided by the invention has a significant effect for treatment of the animal psoroptic manges.

Efficacy and insecticidal properties of some essential oils against Caryedon serratus (Oliver)—a storage pest of groundnut

Abstract: During storage groundnut is attacked by number of stored grain pest and management of these insect pests particularly bruchid beetle, Caryedon serratus (Oliver) is of prime importance as they directly damage the pod and kernels. Hence, some essential oils were tested for their insecticidal and fungicidal properties. Highest total bruchid mortality was recorded with the application of neem oil and pongamia oil at 10% (v/w) concentration and lowest in eucalyptus oil at 5% (v/w). Number of eggs laid was recorded 2.3 in neem oil 10% (v/w) which was lowest and significantly superior over untreated control and was at par with castor oil 10% (v/w) which recorded 2.5 eggs per 100 g of groundnut pods. There was no adult emergence in the groundnut pods treated with castor oil, eucalyptus oil, neem oil and pongamia oil at 10% (v/w) concentration. Groundnut pods treated with castor oil, eucalyptus oil, neem oil and pongamia oil at 10% (v/w) and neem oil at 5% (v/w) concentrations recorded no damage to pods and kernels and also zero per cent weight loss. These oils effectively influenced groundnut bruchid establishment and reduce damage besides reduction in aflatoxin contamination.

Plant essential oil composition for veterinary use

Abstract: Plant essential oil composition for veterinary use is disclosed. The plant essential oil composition comprises 12-60% by weight of an oil phase, 5-50% by weight of a surfactant, and 0-80% by weight of a solvent. The oil phase relates to a mixture of two or several compounds selected from blumea oil, eucalyptus oil, vitex oil, menthol and ledum oil. The surfactant is tween-80, RH-40 and MSE (polyoxyethylene methyl glucoside sesquistearate). The solvent is propylene glycol, polyethylene glycol 400, isoamyl alcohol and ethanol. The composition has functions of relieving cough and eliminating phlegm, an anti-inflammatory function, an antibacterial function, and the like, and can be used for treating respiratory diseases of livestock and poultry. The composition has characteristics of high stability, high dispersibility, high bioavailability, capability of taking effects rapidly, and the like.

Mosquito repelling perfume

Abstract: The invention discloses a mosquito repelling perfume which is mainly composed of the following raw materials in parts by weight: 10 to 15 parts of sodium chloride, 70 to 80 parts of ethanol, 5 to 10 parts of ethyl acetate, 3 to 8 parts of eucalyptus oil, 2 to 6 parts of lemon grass essential oil, 4 to 8 parts of green tea extract, 6 to 10 parts of honeysuckle flower extract, and 75 to 90 parts of deionized water. The mosquito repelling perfume has a good mosquito dispelling effect, and is mild and nonirritant. The perfume functions are increased.

Evaluation of Addition of Plant Fixed Oil Extracts (Ginger , Maramia, Eucalyptus) on Some Properties of Heat Cured Denture Base Material

Abstract: Aims: The aim of this study was to evaluate the effect of three types of natural medicinal plants oils on the transverse strength, residual monomer and hardness of polymethylmethacrylate. Materials and methods: Total number of samples of (105) have been prepared in this study. Fifteen samples of heat cured ProBase acrylic resin were prepared without additives ( Control), and (90) samples were prepared with additives ( Ginger oil ,Meramia and Eucalyptus oil) in two concentrations (1.5 and 2.5) to evaluate transverse strength, indentation hardness and residual monomer. Results: The results showed a significant difference between control and addition groups in the transverse strength and hardness tests. The addition of oils decreased the transverse strength ,and increased the hardness.There was no significant difference between the residual monomer for control and addition groups, but the control group at the first day showed higher residual monomer release. Conclusion: The addition of eucalyptus , meramia and ginger oils to acrylic resin decreased the transverse strength , increased its hardness and showed no significant difference in residual monomer.

Comparative evaluation of antimicrobial activity of the essential plant oils on multidrug resistant nosocomial pathogens

Abstract: The problem of microbial resistance is growing and the lookout for the use of antimicrobial drugs in the future is still uncertain. Therefore, actions must be taken to reduce this problem, and to offer appropriate and efficient antimicrobial drugs to the patient. Down the ages essential oils and other extracts of plants have evoked interest as sources of natural products. They have been screened for their potential uses as alternative remedies for the treatment of many infectious diseases. This study was undertaken to evaluate the antimicrobial activity of commercially available Coconut oil, clove oil, Castor oil, Eucalyptus oil, Neem oil and extracted oreganum oil on the multidrug resistant nosocomial pathogens. The oreganum oil, clove oil eucalyptus oil and neem oil showed antimicrobial activity. With proper studies they can be a beacon of hope in long dark tunnel of dwindling era of new antibiotics.

Formulation & evaluation of topical antibacterial herbal gel of coriander and eucalyptus oil

Abstract: Most of the antibacterial agents were originally derived from plants. Herbal medicine refers to the use of any oil of seeds, leaves for medicinal purposes. Along with other dosage forms, herbal drugs are also formulated in the form of gel. A gel is a gelly like semisolid preparation used topically on a variety of body surfaces. The objective of the study was to formulate and evaluate the antibacterial herbal gel from the local medicinal plants. The oil of the selected plants was taken in different ratio randomly to formulate gel. The topical formulation were developed and tested for physical parameter, drug content, uniformity, Spreadibility. The result showed that coriander and eucalyptus herbal gel showed the MIC values of 50%v/v and 50 %v/v against Bacillus subtillis and staphylococcus Aureus respectively. The formulation second (ECG50) showed the maximum drug content 65% and maximum stability and zone of among the formulation.

Quality assessment of essential oils of Eucalyptus globulus and Boswellia rivae

Abstract: In the course of this study, essential oils of Eucalyptus globulus and three Boswellia rivae species were analyzed using GC-MS. Comparison of the chemical compositions of 1,8-cineole and α-pinene in the assessment of these oils’ quality will help in the production of high value essential oils that will enhance the economic condition of the nation. The Eucalyptus oil samples were collected from commercial distillers in Shashemene, Addis Ababa and Bonga. The Boswellia species studied were B. rivae from Ethiopia, B. sacra (Beeyo) and B. frereana (Meydi) from Somalia. The analysis of oil samples of E. globulus showed that the oil samples obtained from Shashemene and Addis Ababa had high content of 1,8-cineole (70%) and 17% and 12% α-pinene content , respectively. But when compared to the standard South African oil sample, they showed lower concentration of 1,8-cineole (ca 86% vs. 70%). However, the oil from Bonga exhibited relatively higher α-pinene content (20%). Two species of B. sacra (synonym B. carteri ) and B. frereana , occurring in Somalia are well known worldwide as the source of high quality frankincense. In this study, Ogaden etan-2 and Ogaden etan-3 showed a close resemblance to some extent with better quality essential oils of B. sacra and B. frereana species of Somalia. Key words: Quality Assessment, GC-MS, Eucalyptus globulus , 1,8-cineole, α-pinene, Boswellia rivae