Marjoram Oil Research Articles

Pomegranate (Punica granata L.) Inner Decay Caused by Gluconobacter oxydans Bacterium

During the autumn of 2018, inner fruit decay symptoms were observed in pomegranate fruits collected from markets in different localities and farms from Giza, Minia and Assuit Governorates, Egypt. Similar symptoms were observed in each location. The symptoms appeared as creamy bright growth of bacteria in the mesocarp layer, decayed both arils and seeds. Bacteria were isolated from these decayed fruits. The pathogenicity test for isolated bacteria was done. Also, the expressed symptom was compared with the original observed symptoms as followed in Koch postulates. Based on morphological characteristics, analysis of 16S rDNA Genes sequences, and pathogenicity test on pomegranate fruits, the causal agent was identified as Gluconobacter oxydans. Possible control attempts were implemented included applying of essential oils. The results revealed that essential oils of Marjoram, followed by Chamomile expressed the most effective against infection with the bacterium when compared with the control.

The Influence of Two-Component Mixtures from Spanish Origanum Oil with Spanish Marjoram Oil or Coriander Oil on Antilisterial Activity and Sensory Quality of a Fresh Cut Vegetable Mixture.

The aim of this study was to evaluate two-component mixtures of essential oils (EOs) in sub-inhibitory concentrations for antilisterial protection of minimally processed vegetables. Spanish origanum oil (SOO), Spanish marjoram oil (SMO) and coriander oil (CO) and a mixture of fresh leafy vegetables with red beet were used. The chemical compositions of selected EOs were analyzed by gas chromatography. Carvacrol was the major component of SOO. The dominant active component of SMO was 1,8-cineole, while the major constituent in CO was linalool. The study shows that essential oils in combination, namely SOO + SMO and SOO + CO in a ¼ MIC + ¼ MIC (Minimal Inhibitory Concentration), have a synergistic effect against L. monocytogenes. The reduction of L. monocytogenes in vegetable mixtures treated by EOs in these selected combinations after 24 h of storage was approximately equal to the limit of detection. Furthermore, it was found that the vegetable mixture treated with SOO + SMO had the highest-rated sensorial quality and could therefore meet consumer expectations.

The use of cold pressed oils as eco-friendly alternatives for antibiotics in high and low-CP diets of laying Japanese quail

A trial was conducted to access the impact of varying levels of dietary protein (CP) and cold-pressed oil on hematological parameters, liver and kidney function, antioxidant and immunoglobulin indices and lipid profile of Japanese quail at the laying period. A number of 324 mature ten-week of age Japanese quails (216 females and 108 males) were selected. The red blood cells were increased in response to marjoram and thyme oil applied separately or together when comparing with control group (p < 0.05). Cholesterol, triglyceride, low-density lipoprotein and total lipid levels were decreased significantly in response to these oils in birds 2 to 5 month of age compared to the comparing group. Superoxide dismutase activity increased in response to dietary supplementation with marjoram and thyme compared to zero additives group and other groups (p < 0.01). The glutathione and malondialdehyde levels (p < 0.01) decreased due to supplementation with thyme oil alone and in combination with marjoram oil compared to the control and other groups in 2- to 5-month-old birds. It could be concluded quails fed a diet encompassing 18 or 20% CP or supplemented with marjoram or thyme oil exhibited improved antioxidant indices and lipid profile without any harmful influence on the other parameters.

Insecticidal and behavioral effects of some plant essential oils against Sitophilus granarius L. and Tribolium castaneum (Herbst)

Insecticidal, repellent and fumigant activities of Rosemary [Rosmarinus officinalis (Lamiaceae)], Daphne [Laurus nobilis (Lauraceae)], Echinacea (Echinacea purpurea (Asteraceae), Marjoram [Origanum majorana (Lamiaceae)], Basil [Ocimum basilicum (Lamiaceae)] and Fennel [Foeniculum vulgare (Apiaceae)] extracts were tested against Sitophilus granarius (Col.: Curculionidae) and Tribolium castaneum (Col.: Tenebrionidae) under laboratory conditions. The composition of essential oils extracted from the plants was also determined. Eucalyptol and Terpinyl acetate were the main components of Daphne oil. Similarly, the main components of Basil oil were Methyl cinnamate, Linalool and Eucalyptol, whereas Camphor and Eucalyptol were the main constituents of Rosemary oil. Likely, γ-Terpinene and β-Terpineol were the main components of Marjoram oil, while Estragole was the main component in Fennel oil. The β-Cubebene and Caryophyllene were the main components of Echinacea oil. Echinacea and Basil oils exhibited high contact toxicity against S. granarius. Basil oil caused 99.59% mortality of S. granarius 24 h after application, whereas Echinacea oil caused 99.59% mortality 72 h after application. In single-dose fumigant toxicity assays, Rosemary oil exhibited 58.41% fumigant activity against S. granarius after 24 h, whereas Fennel oil indicated 100% fumigant toxicity against T. castaneum. All essential oils showed repellent effects against both the pests. The essential oils caused 34.12–95.29% decrease in the progeny production of F1 generation of T. castaneum, while the decrease in the F1 generation of S. granarius ranged between 84.27 and 98.88%. It is concluded that essential oils of Fennel, Rosemary, Echinacea and Basil could potentially be used for the control of studied stored grain pests.

Insecticidal Activity of 28 Essential Oils and a Commercial Product Containing Cinnamomum cassia Bark Essential Oil against Sitophilus zeamais Motschulsky.

Maize weevils, Sitophilus zeamais, are stored product pests mostly found in warm and humid regions around the globe. In the present study, acute toxicity via contact and residual bioassay and fumigant bioassay of 28 essential oils as well as their attraction–inhibitory activity against the adults of S. zeamais were evaluated. Chemical composition of the essential oils was analyzed by gas chromatography-mass spectrometry, and a compound elimination assay was conducted on the four most active oils (cinnamon, tea tree, ylang ylang, and marjoram oils) to identify major active constituents. Amongst the oils examined, cinnamon oil was the most active in both contact/residual and fumigant bioassays, and exhibited strong behavioral inhibitory activity. Based on the compound elimination assay and chemical analyses, trans-cinnamaldehyde in cinnamon oil, and terpinen-4-ol in tea tree and marjoram oils were identified as the major active components. Although cinnamon oil seemed promising in the lab-scale bioassay without rice grains, it failed to exhibit strong insecticidal activity when the container was filled with rice. When a cinnamon oil-based product was applied both in an empty glass jar and a rice-filled container, all weevils in the empty jar were killed, whereas fewer than 15% died in the rice-filled container.

Comparison Essential Oil Contents Origanum Majorana L. Obtained by Clevenger and SFE

The volatile components of Origanum majorana L. essential oil obtained from both clevenger and supercritical fluid extraction (SFE) were determined by GC–MS and GC-FID. Extraction of these biologically active compounds requires the usage of large amounts of environmentally unfriendly solvents and technologies operating with high costs. Supercritical fluid extraction is an environmentally friendly and efficient extraction technique for solid materials, being extensively studied for the separation of active compounds from herbs and other plants. The essential oil obtained by SFE contains mainly carvacrol (76.69% with GC-MS and 91.95% with GC-FID) which are responsible for the characteristic flavour and fragrance of marjoram oil. And also to compare with SFE, the essential oil obtained by Clevenger contains mainly carvacrol (70.47% with GC-MS and 89.00% with GC-FID). It can be concluded that almost all the biologically active compounds from marjoram herb can be efficiently extracted by SFE.

Toxicity of Some Essential Plant Oils Against Cotton Leaf Worm, Spodoptera littoralis (BOISD.)

The study aims to evaluate the bioactivity of plant essential oils (neem oil, garlic oil, marjoram oil, and menthol oil) on 2nd instar larvae of the cotton leafworm, Spodoptera littoralis in the laboratory. Also, LC50 of each treatment was established against 2nd instar larvae of S. littoralis under semi-field conditions. The obtained results reveal that neem oil was more effective than the other oils followed by, marjoram oil then garlic oil and then, menthol oil.LC50 was3022.50, 3803.41, 4630.13and5323.38ppm for neem oil, marjoram oil, garlic oil, and menthol oil, respectively, for 2nd instar larvae. While, when LC50of these oils applied on the 2nd instar larvae in the semi-field, the results indicated that, garlic oil was the most effective essential oil followed by, menthol oil, marjoram oil, and neem oil.

Efficacy of Compost and Some Essential Oils Alone or in Combination in Controlling Cucumber White Mould Disease Under Protected House Conditions فعالیة السماد العضوی (الکمبوست) وبعض الزیوت العطریة بمفردها أو معًا فی مکافحة مرض العفن الأبیض فی الخیار تحت ظروف البیوت المحمیة

Three concentrations i.e 1, 2.5 and 5% of five essential oils were tested to study their effect on growth of Sclerotinia sclerotiorum. Results showed that Clove and Marjoram oils were inhibited growth of S. sclerotiorum. Under greenhouse conditions results revealed that amending vegetarian compost to soil increased the activity of all plant oils than the individual treatment in reducing disease severity of Sclerotinia rot. Clove oil alone or in combination with compost completely prevented the disease incidence. Seedling soaking with nigella, marjoram and clove oils and their combinations with or without compost against Sclerotinia rot disease. Clove oil combined with compost completely prevented the disease incidence in 2017 and disease severity recorded 2.36 % in 2018 growing season. Moreover, increase of fruit yield was recorded with the combined treatments between compost + clove oil then compost + marjoram and clove oils during growing seasons 2017 and 2018 respectively. All tested treatments positively increased the activity of peroxidase (PO), Polyphenol Oxidase (PPO) and PAL enzymes in cucumber. Moreover, chitinase and β 1,3- glucanase were greatly increased in treated cucumber with treatments compared with control. The results of SDS (PAGE) showed that 15 protein bands with molecular weights ranging from 234.433 to 50.017 kDa are contained in cucumber plants. New protein bands expressed as a result of treating cucumber with plant oils. One band with 90.783 KDa was appeared in plants treated with marjoram and Clove oils, while absent in other treated plants.

Increasing the efficacy of the cotton leaf worm Spodoptera littoralis nucleopolyhedrosis virus using certain essential oils

Baculoviruses inactivation by UV sunlight is considered one of the most important factors that reduce their potential use in insect management programs. The three antioxidant essential oils, marjoram, orange, and tea tree were tested as protective additives to the multiple nucleopolyhedrosis virus (SpliMNPV) against UV. The results revealed that the orange oil was promising for virus protection, while the tea tree oil and marjoram oil did not protect the virus. The results also showed that the pathogenicity of the combination treatment of SpliMNPV and orange oil was increased drastically by adding the LC50 (1.0%) concentration of the oil to the virus concentrations. Consequently, the LC50 of the mixture was reduced to 5.3 × 103 PIB/ml compared to 3.2 × 105 PIB/ml concentration of virus alone. Concomitantly, the ovicidal and larvicidal effects of orange oils were determined. The results suggested that the combination treatment of orange oil and SpliMNPV could be used as an effective method for the cotton leaf worm, Spodoptera littoralis (Boisd.), management.

Marjoram Oil and Propolis Modulate Hepatic Injury Induced by Diclofenac Sodium in Albino Rats via Reducing Oxidative Stress, Inflammation and BAX Gene Expression

Marjoram Oil and Propolis Modulate Hepatic Injury Induced by Diclofenac Sodium in Albino Rats via Reducing Oxidative Stress, Inflammation and BAX Gene Expression

TOXICOLOGICAL IMPACT OF VOLATILE OILS EXTRACTED FROM FOUR PLANTS AND THEIR JOINT ACTION WITH PHOSPHINE ON THE BROAD BEAN BEETLE BRUCHIDIUS INCARNATUS (BOH.)

This study was carried out to determine the toxicity of four volatile oils of Wild mint (Mentha longifolia L.), Marjoram (Origanum majorana L.), Lemon peel (Citrus aurantiifolia Christm.), Orange peel (Citrus sinensis L.) and phospheine, against the adult of the Broad Bean Beetle Bruchidius incarnatus (Boh) (coleopteran: Bruchidae). The phosphine and marjoram oil were the most effective against B. incarnatus adults, 24h post treatment. Their LC50's were 0.0884 and 40.266 mg/l, resspectivley. In addition, the binary mixtures of wild mint with Marjoram volatile oils at all ratios 1:1, 1:2 and 2:1 exhibit potentiation effect. On the other hand, the binary mixtures of Lemon with Orange or Marjoram, showed antagonistic effect. The mixture of Wild mint with Lemon showed potentiation effect at the ratio of 2:1 and the same effect was recorded at the ratio of 1:1 in the mixture of Wild mint with Orange. The mixture of Wild mint with Lemon and Wiled mint /Orange showed antagonistic effect at the ratios of 1:1 and 1:2, respectively. But the mixture of Wild mint with Orange gave an additive effect at the ratio of 2:1, against adult of B. incarnatus, 24h post treatment. Concerning the binary mixtures of phosphine and the four volatile oils gave potentiation effect.

Antibacterial and Antifungal Activity of Essential Oil of Origanum Majorana Lon a Few Bacteria and Fungi

The objective of this study is to assess the fungal and antimicrobial activity of the essential oil (ET) of marjoram (Origanum majorana L.). This strategy can contribute to the sustainable development of our country. Preliminary tests performed on the essential oil of Origanum majorana showed that this oil has antibacterial activity vis-à-vis the bacterial strains (Enterococcus feacalis, Enterobacter cloaceai, Proteus microsilis, Escherichia coli, Klebsiella pneumonia, and Pseudomonas aeruginosa) and antifungic (Fusarium sporotrichioide and Fusarium graminearum). The culture medium used was nutrient broth Muller Hinton. The interaction between the bacteria and the essential oil is expressed by a zone of inhibition with diameters of MIC indirectly expression of. And we used the PDA medium to determine the fungal activity. The extraction of the aromatic fraction (essentially oil hydrolat) of the fresh aerian part of the Origanum majorana was performed by hydrodistillation. The average essential oil yield is 0.99%. The antimicrobial and fungal study of the essential oil and hydrosol showed a high inhibitory effect on the growth of pathogens.

Effect of fertilization and irrigation with magnetic water on the productivity of marjoram plant

This research was conducted at the National Research Center greenhouse ring two consecutive seasons of 2013/2014 and 2014/2015, in order to study the effect of irrigation water types (tap water, magnetized water) and levels of ammonium sulfate (0, 7, and 14 g / pot) and their interaction, on the vegetative growth and oil production of marjoram (Majorana hortensis L.) plant. The results showed that marjoram plants responded significantly to the different types of irrigation, as well as nitrogen fertilization and their interaction. Irrigation by magnetized water showed that a significant increase in vegetative growth; i.e. plant height, number of branches, fresh and dry weights of herb, stem, leaves and roots per plant and root length. Using nitrogen fertilizer rates gave significant increases in vegetative growth parameters, where the best treatment one was 14 g/pot. As for the interaction between types of irrigation water and nitrogen fertilizer rates, data showed that plants irrigated with magnetized water with addition of ammonium sulfate at a rate of 14 g/pot recorded the highest values ​​of the attributes of vegetative growth, production of oil, major compounds of oil and chemical components of marjoram plant. Magnetic water treatment with the addition of 14 g / pot ammonium sulfate recorded 43.38% of the terpineol-4-ol (the main compound of the oil), while irrigation with tap water recorded 26.41%. Also this treatment increased some compounds of marjoram oil percent; such as α-myrcene, α-terpinene, α-phellandrene, C-terpinene, α –terpinolene, L-linalool, α-terpineol and linalyl acetate with mean values of 1.08, 5.91, 1.13, 12.45, 2.40, 3.48, 3.53 and 6.35 compared to tap water treatment, which gave 0.89, 4.31, 1.08, 8.81, 1.91, 2.64, 2.97 and 5.66 for these components; respectively. The obtained results also indicated the possibility of obtaining the highest values ​​of chemical constituents such as total carbohydrates, nitrogen, phosphorus and potassium percentages when plants were irrigated with magnetized water with the addition of ammonium sulfate at a rate of 14 g / plant under the conditions of the experiment.

Antibacterial eff ect of Lavandula stoechas and Origanum majorana essential oils against Staphylococcus aureus, Streptococcus agalactiae, and Escherichia coli

This research examined the antimicrobial effect of Lavandula stoechas (lavender) and Origanum majorana (marjoram) essential oil against three mastitis-causing pathogens: Staphylococcus aureus, Streptococcus agalactiae, and Escherichia coli. Gas chromatography-mass spectrometry (GC/MS) analysis revealed that the main components of the lavender and marjoram oils were 17-Pentatriacontene, Linalyl acetate, Eucalyptol, linalool and 3-Cyclohexene-1-ol,4-methyl-1-(1-methylethyl)-,(R)-, α-terpineol, P-cymene, respectively. Broth dilution testing was performed using autoclaved whole milk instead of broth to determine minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) of essential oils alone and in combination. In addition, time-kill assay of lavender and marjoram oils were determined in milk up to 24 h. MIC values ranged from 3.12 - 4.37% v/v and MBC between 6.25 - 8.75% v/v for the lavender. The MIC and MBC of the marjoram ranged from 0.62 - 1.87% v/v and 1.25 - 3.75% v/v, respectively. The MIC ranged from 2.5 - 5% v/v and MBC between 5 - 10% v/v for lavender + marjoram combination. In time-kill assays, the presence of lavender and marjoram oils at a sub-MIC concentration significantly reduced the bacterial population in 4, 10 and 24 h. Generally, essential oil of marjoram had greater antibacterial activity than lavender against all mastitis-causing pathogens tested and has the potential to be evaluated as an alternative or adjunct to antibiotics in the treatment of bovine mastitis.

Origanum majorana L. Essential Oil-Associated Polymeric Nano Dendrimer for Antifungal Activity against Phytophthora infestans.

In this study, the introduction of Origanum majorana L. essential oil into a polyamidoamine (PAMAM) G4.0 dendrimer was performed for creation of a potential nanocide against Phytophthora infestans. The characteristics of marjoram oil and PAMAM G4.0 was analyzed using transmission electron spectroscopy (TEM), nuclear magnetic resonance spectroscopy (1H-NMR) and gas chromatography mass spectrometry (GC-MS). The success of combining marjoram oil with PAMAM G4.0 was evaluated by FT-IR, TGA analysis, and the antifungal activity of this system was also investigated. The results showed that the antifungal activity of oil/PAMAM G4.0 was high and significantly higher than only PAMAM G4.0 or marjoram essential oil. These results indicated that the nanocide oil/PAMAM G4.0 helped strengthen and prolong the antifungal properties of the oil.

The effect of an addition of marjoram oil on stabilization fatty acids profile of rapeseed oil

Currently, natural antioxidants and substances with a protective effect on fatty acids are used more and more often instead of synthetic compounds that may have a negative impact on human health. This is related to the prevailing trend of promoting healthy and organic food. Essential oils are interesting in this respect because studies confirm their antioxidant properties. The aim of this study was to analyse the effect of the addition of marjoram oil on the inhibition of changes in the fatty acid profile of rapeseed oil, stored under different temperature conditions. In the experiment, marjoram oil and BHA were added to the batches of rapeseed oil. The samples of rapeseed oil with the addition of marjoram oil and BHA were stored at room temperature and at 40 °C. The negative effect of storage on quantitative changes in fatty acid profile of rapeseed oil was observed. It was found that the ability of selected substances to inhibit unfavourable transformations in fats depends on their concentration and the temperature of storage. Marjoram oil can potentially be used as an additive stabilizing the fatty acid profile in vegetable oils.

Management of Charcoal Rot (Macrophomina phaseolina) Infection in Geranium (Pelargonium graveolens L) Using Biocontrol Agents and Essential Oils

IN a trial to control charcoal rot disease (Macrophomina phaseolina) in geranium using ecofriendly strategies, antagonistic microbes and essential oils were used. the treatments included three bacterial isolates, Bacillus polymixa, B. circulance, B. Subtilis and one fungus Tricoderma harzianum in addition to five essential oils, (Syzygium aromaticum(cloves), Ocimum basilicum L. (basil), Mentha spicata (Spearmint), Majorana hortensis Moench (Marjoram) and Mentha piperita L. (Peppermint). The in vitro antagonistic effect of microbial isolates and essential oils against M. phaseolina isolated from infected geranium was estimated in Petri plats, The essential oils were used in three concentrations 1, 3 and 5 microliter/plate. the most promising treatments were applied in an artificially infested geranium in a greenhouse experiment along two growing seasons of 2017, 2018. The in vitro screening step indicated that among the treatments, Bacillus subtilis and Trichoderma harzianum were the most promising microbes against the fungal pathogen under study using the dual culture technique. On the other hand, Peppermint oil recorded the highest reduction in radial growth of pathogen followed by Basil oil while Marjoram oil had no effect on the growth of pathogen. The green house experiment showed that, most treatments were efficient in pathogenicity reduction but the microbial treatment exhibited an advantage over essential oil where growth and yield parameters were sharply improved. The maximum enhancement was attained at T5 treatment (infested + dipping for 30 min before planting and spraying with T. harzianum after every cutting process) at all cuts during 2017 and 2018 seasons. Also, T. harzianum increased oil %, which recorded 0.45, 0.30 and 0.38% at 2017 season and 0.47, 0.31 and 0.39% at 2018 season for 1st, 2nd and 3rd cut respectively. Therefore, microbial and essential oil treatments not only reduced the fungal infection but also enhanced vegetative growth of geranium plants.

The Effect of Some Natural Essential Oils Against Bovine Mastitis Caused by Prototheca zopfii Isolates In Vitro

The aim of the study was to evaluate the effect of essential oils obtained from Thymus vulgaris L., Origanum vulgare L., Origanum majerana L., Mentha × piperita L. and Allium ursinum L. against Prototheca zopfii strains that cause inflammation of the udder (mastitis) in cows. The study was conducted on ten strains derived from milk samples. The microdilution method was used to determine the sensitivity of P. zopfii strains to the studied essential oils, and the disk diffusion method was used to determine the sensitivity to antifungal chemotherapeutics. The plates were incubated for 48 h at 37 °C under aerobic conditions. All strains of algae were sensitive to the essential oils marjoram, thyme and oregano and resistant to mint and garlic oils. MIC values ranged from 0.25 to 1 μl/ml. Marjoram oil demonstrated the greatest activity, and oregano oil the weakest. Among the antifungal agents tested, 90% of strains showed sensitivity to nystatin. One of the tested strains (71/IV) was resistant to all investigated antifungal agents. The tested essential oils are known to have anti-algae activity and can be used as natural agents for prophylaxis in animals, particularly in mastitis-affected cows.

Chemical Composition of Herbal Macerates and Corresponding Commercial Essential Oils and Their Effect on Bacteria Escherichia coli.

This study addresses the chemical composition of some commercial essential oils (clove, juniper, oregano, and marjoram oils), as well as appropriate herbal extracts obtained in the process of cold maceration and their biological activity against selected Escherichia coli strains: E. coli ATTC 25922, E. coli ATTC 10536, and E. coli 127 isolated from poultry waste. On the basis of the gas chromatography-mass spectrometry (GCMS) analysis, it was found that the commercial essential oils revealed considerable differences in terms of the composition and diversity of terpenes, terpenoids and sesquiterpenes as compared with the extracts obtained from plant material. The commercial clove, oregano, and marjoram oils showed antibacterial properties against all the tested strains of E. coli. However, these strains were not sensitive to essential oils obtained from the plant material in the process of maceration. The tested strains of E. coli show a high sensitivity, mainly against monoterpenes (α-pinene, β-pinene, α,β,γ-terpinene, limonene) and some terpenoids (thymol, carvacrol). The commercial juniper oil contained mainly monoterpenes and monoterpenoids, while the extracts contained lower amounts of monoterpenes and high amounts of sesquiterpenes—the anti-microbiotic properties of the juniper herbal extract seem to be caused by the synergistic activity of mono- and sesquiterpenes.

EFFECT OF COLD PRESSED OILS OF MARJORAM AND THYME ON GROWTH PERFORMANCE, CARCASS TRAITS AND BLOOD CHEMISTRY OF GROWING JAPANESE QUAIL

The present study was carried out to investigate the effect of dietary supplementation of two cold pressed oils and their combination on productive performance, carcass traits and some blood parameters of growing Japanese quails. A total number of 400 chicks of unsexed one week old Japanese quail were distributed into four dietary treatment groups according to diets fed as; (T1) fed basal diet (BD) representing the control; (T2) fed BD + Thyme Oil (TO) 250mg/ Kg; (T3) fed BD + Marjoram Oil (MO) 250 mg/ Kg and (T4) fed BD + TO 125 mg/Kg plus MO 125mg/Kg. Each treatment comprised of 100 chicks in 5 replicates of 20 chicks each. Results showed that groups fed diets supplemented with thyme or its combination with marjoram oil exhibited significantly better (P≤0.01) live body weight (LBW) at 3 and 6 week of age as well as body weight gain (BWG) through 1-3 and 1-6 week of age (P>0.01), comparing with that of control or marjoram groups. Daily feed intake (DFI) showed no significant (P>0.05) differences among different groups. However, feed conversion (FC) values demonstrated no significant variation among dietary treatments during 1-3 and 3-6 weeks of age, while results of the whole period, 1-6 weeks of age, indicated significant (P≤0.01) enhancement of FC due to dietary supplementation of thyme oil and its combination with marjoram comparing with control or marjoram groups. All carcass traits were not significantly affected by different dietary treatments. The experimental groups had no significant effect on plasma total protein, albumin, globulin, albumin/globulin ratio and aspartate aminotransferase (AST) while, alanine aminotransferase (ALT) values were significantly reduced due to treatments of cold pressed oils comparing to control treatment. In conclusion, supplementing marjoram and thyme cold pressed oils into the Japanese quails improved productive performance without any detrimental impacts on blood parameters.