Fruit Essential Oil Research Articles

Literature Review: Pengaruh Pemberian Aromaterapi Sebagai Intervensi Asuhan Keperawatan Terhadap Tingkat Kecemasan Pada Lansia

Introduction : The aging process is a process marked by a decrease or change in various physical, psychological and social conditions in interacting with other people. Of the various elderly who experience physical changes will affect health and will cause a decrease in welfare so that it can cause psychological problems, one of which is anxiety. Elderly who experience psychological problems such as anxiety, then these conditions can interfere with the daily activities of the elderly. One of the non-pharmacological therapies to reduce anxiety levels that is easy to do and affordable is Aromatherapy. Objective: To determine the effectiveness of aromatherapy in reducing anxiety levels in the elderly based on the Literature Review. Methods: Search articles using PubMed, Google Scholar and World Wide Science, then found 8 articles according to the inclusion and exclusion criteria which were then reviewed. Results: Based on eight reviewed journals, an effective therapy to reduce anxiety levels in the elderly is by giving aromatherapy with fruit and flower essential oils. Discussion: giving aromatherapy can be done 3-7 days and there are some journals that are done for 30 days in a row and given for 10-15 minutes. Conclusion: giving aromatherapy is very effective in reducing anxiety levels in the elderly because the therapy is easy, safe, effective, non-invasive, and can be done by all ages.

Pistacia atlantica fruit essential oil nanoemulsions (PAEO-NE), an effective antiangiogenic therapeutic and cell-dependent apoptosis inducer on A549 human lung cancer cells

The purpose of this study was synthesizing of nanoemulsion from Pistacia atlantica essential oil (PAEO-NE) and investigates its possible mechanisms in inhibiting cancer cells. Ultrasonic method was used to prepare the optimal formulation and then after characterization, its anti-cancer effects were evaluated by MTT, flow cytometry, QPCR, ROS, CAM, and scratch methods. Particles measuring 35.8 nm, PDI 0.4 were obtained with a surface charge of −32 mV in a formulation containing 9% twin 80. These particles had cytotoxic effects against skin, lung and prostate cancer cells with IC50 of less than 10 μg/mL without any toxic effect on normal cells. Increased intracellular ROS, increased expression of cas-3, 8, and IL-10 genes, inhibition of vessel length and number in CAM model and inhibition of cell migration in PAEO-NE treatment were observed. According to the results, PAEO-NE can be considered as as a safe and effective anti-lung cancer therapeutic agent.

Illicium verum (Star Anise) and Trans-Anethole as Valuable Raw Materials for Medicinal and Cosmetic Applications.

Illicium verum Hook f. (star anise) is considered an important species in Traditional Chinese Medicine and is also used in contemporary medicine in East Asian countries. It occurs in natural habitats in southeastern parts of China and Vietnam, and is cultivated in various regions in China. The raw materials—Anisi stellati fructus and Anisi stellati aetheroleum obtained from this species exhibit expectorant and spasmolytic activities. The European Pharmacopoeia (4th edition) indicates that these raw materials have been used in allopathy since 2002. The biological activities of the above-mentioned raw materials are determined by the presence of valuable secondary metabolites such as monoterpenoids, sesquiterpenoids, phenylpropanoids, and flavonoids. Recent pharmacological studies on fruit extracts and the essential oil of this species have confirmed their antibacterial, antifungal, anti-inflammatory, and antioxidant activities and thus their medicinal and cosmetic value. The aim of this review was to examine the progress of phytochemical and pharmacological studies that focused on possible cosmetic applications. In addition to fruit extracts and essential oil, the current consensus on the safety of trans-anethole, which is the main compound of essential oil used in cosmetology, is underlined here.

Chemical Characterization and Evaluation of Anticancer Activity of Pistacia terebinthus Linn. Fruits Essential Oil

Pistacia terebinthus Linn. (Anacardiaceae) is an important species of Pistacia commonly found in Kurdistan region of Iraq. P. terebinthus is traditionally used for the treatment of several human ailments including asthma, stomach ache, sunstroke, and rheumatism. The plant is known for its antioxidant, antimicrobial, and antifungal activities. The present study aims to characterize the chemical composition of P. terebinthus fruits essential oil by gas chromatography-mass spectroscopy (GC/MS) and, determination of anticancer activity by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT) assay using A549 (Human lung cancer) cell lines. The GC/MS analysis of P. terebinthus essential oil identified seventy-two chemical constituents. Linoleic acid (21.86%), isopropyl palmitate (13.47%), ethyl palmitate (11.78%), ethyl stearate (7.97%), hexadecenoic acid (6.62%), 11-eicosenoic acid (6.00%), cis-11,14-sicosadienoic acid (4.86%), β-phellandrene (1.70%), limonene piperitone (1.60%), α-humulene (1.21%), ethyl nonadecanoate (1.43%), and pyrogallol (1.16%) were found as major compounds in P. terebinthus essential oil. P. terebinthus produces time (24 h) and dose-dependent inhibition of cell proliferation of human lung cancer (A549) cell lines. The cell viability of A549 cell lines after 24 hrs treatment with P. terebinthus ranging from 99.81±4.01 to 16.13±2.42% for concentration range of 0.5-500 μg/mL, respectively, with IC value of 123.8±3.41 μg/mL. The bioactive phytochemicals have been proven as potential anticancer agents, the possible cytotoxic activity of P. terebinthus could be due to presence of these essential oil phytochemicals. The present study outcomes on P. terebinthus essential oil expands knowledge about its chemical constituents and provides scientific basis for its possible use as anticancer remedy.

Effect of environmental factors on the fruit essential oils of Pistacia terebinthus L. growing wild in Turkey

Background: The aim of this study was to investigate the effect of environmental factors on the essential oil yields (EOYs) and major essential oil components in the ripe fruits of Pistacia terebinthus L. (turpentine tree), which is a medicinal and aromatic plant. Fruit samples were collected from 34 different locations of the turpentine tree growing wild in the Lake District in the Mediterranean Region of Turkey. EOYs (%, v/w) and essential oil component ratios (%) were determined in fruit samples by hydrodistillation and GC-MS methods, respectively. The effect of environmental factors on these variables were analyzed using Pearson Correlation and Principal Component Analysis. Results: The essential oil yield of fruits collected from different localities ranged from 0.05% (v/w) to 0.19% (v/w). In terms of average values, α-pinene with 41.01% and limonene with 14.28% were the major components in the essential oils of ripe fruits. Among the environmental variables, longitude and sand % in 10-30 cm were the variables that made a statistically significant difference (p < 0.05) in fruit essential oil yield. According to the results of principal components analysis (PCA), α-pinene and Ocimene components were most affected by silt (%, 10-30 cm) and pH (%, 30-50 cm) ratios. The longitude and total annual precipitation (mm) were the most determining variables in the sabinene and limonene components, respectively. It was seen that the total lime ratios at different depth levels of the soils taken from the localities were the most effective variables for Myrcene and p-Cymene components. Conclusion: The study findings showed that EOYs and intended volatile component ratios in ripe fruits of turpentine trees grown under appropriate environmental conditions can be increased.

Biological properties of Schinus terebinthifolia Raddi essential oil

Schinus terebinthifolia Raddi green fruits essential oil (EO) was evaluated regarding its phytochemical profile, antimicrobial and cytotoxic activities, and toxicity. Gas chromatography with mass spectrometry was applied to identify its constituents, thereafter the minimum inhibitory concentration, minimum bactericidal and fungicidal concentrations, and its antibiofilm activity were evaluated. The EO cytotoxicity was assessed in tumor and non-tumor human cells, and in vivo toxicity was evaluated in a Galleria mellonella model. The major constituents of S. terebinthifolia EO were alpha-phellandrene and beta-phellandrene. The EO had a weak activity against all strains of Candida albicans (MIC 1000μg/mL) and had no activity against non-albicans strains, bacteria, and C. albicans biofilm. Cytostatic activity against all tumor cell lines was shown. Additionally, cell viability remained at EO concentrations up to 62.5 μg/mL. At 16 mg/mL, 50% hemolysis was observed, and it had low toxicity in vivo. Overall, the S. terebinthifolia EO was characterized by low antimicrobial and antibiofilm activities, with no evidence of toxicity to human tumor and non-tumor cells.

Effects of Zinc Application on Some Important Yield and Quality Characteristics of Coriander (Coriandrum sativum L.)

In this study, the effects of zinc application on the yield and quality characteristics of coriander was investigated. The experiments were conducted in randomized blocks split plots experimental design with 4 replications. In the experiment, coriander cultivars (Arslan and Gürbüz) were placed in the main plots and zinc doses (Control, 200, 400, 800 g da-1) were placed in the subplots. In the study, cultivar x zinc interaction was significant in the number of umbel per plant and essential oil content; zinc treatments were found to be significant in the number of branches per plant, biological and fruit yield, essential and crude oil contents; cultivars were significant in thousand fruit weight and harvest index. In this study, essential oil content varied between 0.40-0.55% and crude oil content varied between 10.8-14.6%. In essential oil composition analysis, linalool was the main component, while in fatty acid composition analysis petroselinic acid was determined as the main component. At the end of the study, it was determined that 800 g da-1 zinc dose of Arslan cultivar was appropriate in terms of fruit yield. Also, the 200 g da-1 zinc dose of Gürbüz cultivar and the 800 g da-1 zinc dose of Arslan cultivar had the highest values in terms of linalool and petroselinic acid ratios respectively.

Analysis of Wound Healing from Andaliman Fruit Essential Oil Ointment (Zanthoxylum Canthopodium Dc.) on Wistar Rats (Rattus Norvegicus)

Injuries are cases of injury that are often experienced by every human being. A wound is the loss or damage of some body tissue. Many andaliman fruits contain many phytochemicals such as phenols, saponins, flavonoids, triterpioids, and alkaloids. Its terpenoid content has antioxidant and antimicrobial activity repellents. Iris / incision wounds, which are wounds caused by sharp object slices such as knives, cause damage to vessels that are large enough if the slice is deep enough. This study aims to find out the effect of Andaliman Fruit Essential Oil Saleb (Zanthoxylum acanthopodium DC.) on wound healing in white rats. This experimental study with the approach of Pre-test and Post-test group only control design was conducted January to February 2021, at the Herbarium Medanese FMIPA USU, the Pharmacognosive Laboratory of the Faculty of Pharmacy USU, and the Laboratory of Pharmaceutical Pharmacology USU. The samples were Andaliman Fruit (Zanthoxylum acanthopodium DC.), and male white rats. The number of samples using frederer formula, so determined the number of as many as 25 rats selected randomly divided into 5 groups. Data analysis uses the normality test statistical data test, and the ANOVA test. The results of the study that andaliman fruit extract has several bioactive compounds such as alkaloids, flavonoids, saponins, and tannins that play a role in wound healing. The optimum concentration of Saleb Andaliman fruit essential oil that can heal wounds in white rats is 5%. The highest percentage of cures on the 14th day was in positive control (Bioplacenton®) which was 95% and followed by an extract of 5% v/v with a cure percentage of 90%. Essential oil of andaliman fruit extract has the ability to approach Bioplacenton® in healing wounds in mice.

A Comparative Study on Essential Oil Profile and Antioxidant Activity in Different Parts of Three Ferulago Species.

In the present study, the phytochemical features of the essential oils from leaves, flowers, and fruits in three Ferulago species including F. angulata, F. carduchorum, and F. contracta was investigated. The essential oils were extracted using the hydrodistillation method and analyzed by GC-FID and GC/MS. The essential oil content varied between 0.46 to 2.65 % (v/w) among the various parts of the studied species. Monoterpene hydrocarbons (leaves: 34.80-78.76 %, flowers: 88.67-94.26 %, fruits: 89.54-94.21 %) constituted the main fraction of three Ferulago species. The major compounds of the essential oil among the species were α-pinene (15.01-22.16 %), β-phellandrene (2.48-14.73 %), α-phellandrene (0.52-13.8 %), and germacrene B (0.11-13.28 %) in leaves; (Z)-β-ocimene (38.46-47.21 %), α-pinene (10.25-18.32 %), and α-phellandrene (5.07-9.44 %) in flowers; (Z)-β-ocimene (10.21-41.19 %), α-phellandrene (7.51-31.89 %), α-pinene (8.96-17.71 %), β-phellandrene (7.24-17.44 %), terpinolene (2.90-7.77 %), and δ-3-carene (1.57-7.66 %) in fruits. The classical antioxidant activity of the essential oils was assessed using the DPPH method. The fruit essential oils of the studied species induced a significant level of antioxidant activity compared to ascorbic acid (EC50 =50.24 μg/mL). The highest level of antioxidant activity was found in F. carduchorum (EC50 =68.75 μg/mL) fruits essential oil. Ferulago species, therefore, have the potential to be utilized as natural antioxidants in the pharmaceutical, food or cosmetic industries owing to their high level of antioxidant activity.

Comparative study of essential oils from fennel fruits and anise fruits: Chemical composition and in vitro antimicrobial activity

Fennel (Foeniculum vulgare Mill.) and anise (Pimpinella anisum L.) are well-known aromatic plants with traditional use as medicinal and culinary spices and herbs. As part of a broader study, the aim of this investigation was to determine the chemical composition of fennel fruit essential oil (Foeniculi fructus aetheroleum, FFA) and anise fruit essential oil (Anisi aetheroleum, AA) and to assess their antimicrobial potential. Hydrodistilled FFA from fruits gathered in central Macedonia was subjected to physico-chemical analysis, as well as commercial AA, which was obtained from a local vendor. The chemical composition of both essential oils was determined using gas chromatography with mass spectrometric detection. The main component of both essential oils was trans-anethole. The antimicrobial action of both essential oils (FFA and AA) was tested against several bacterial cultures and compared to standard antimicrobial agents. The microorganisms used in this research were Gram-positive bacteria (Bacillus pumilus NCTC 8241, Staphylococcus aureus ATCC 6538,), Gram-negative bacteria (Escherichia coli ATCC 8739 and Pseudomonas aeruginosa ATCC 9027), and fungi (Saccharomyces cerevisiae ATCC 9763 and Candida albicans ATCC 10231). The microdilution test enabled determination of the minimal inhibitory concentration (MIC) of all samples used in the experiment against all of the test microorganisms. It was concluded that FFA and AA have moderate antibacterial activity and affect the growth of the Gram positive and the Gram negative bacteria. On the other, they are potent antifungal agents and affect the growth of S. cerevisiae ATCC 9763 and C. albicans ATCC 10231. AA was observed to have a slightly higher antimicrobial activity when compared to FFA. Based on the chemical composition of the samples, a connection was proposed between the trans-anethole content of the essential oils and their antimicrobial properties.

Disruption of metabolic function and redox homeostasis as antibacterial mechanism of Lindera glauca fruit essential oil against Shigella flexneri

Current trend in food safety and public health is focusing on the use of natural antimicrobials. The Lindera glauca fruit with rich resource and essential oil has emerged as potential application in China. This work aimed to detect chemical compounds of L. glauca fruit essential oil (LGFEO) and to evaluate antimicrobial activity and mechanism of LGFEO for develop natural antimicrobials. A total of 70 volatile compounds were identified, and the major groups were monoterpene (56.62%) and sesquiterpene (39.71%). The analysis of antimicrobial activity indicated that LGFEO could effectively inhibit the growth of all tested 13 food-borne pathogens, of which Shigella flexneri had the highest inhibition zone diameter (DIZ, 25.45 nm), and the lowest minimum inhibitory concentration (MIC, 0.156 μg/mL) and bactericidal concentration (MBC, 0.312 μg/mL). To unravel antibacterial mechanism of LGFEO on S. flexneri , the dynamic changes for bacterial growth curve, material release, and the levels of intracellular mallondialdehyde (MDA), hydrogen peroxide (H 2 O 2 ), and ROS-detoxifying enzymes were analyzed in S. flexneri cells exposed to LGFEO at different concentrations (1/2 × MIC, 1 × MIC and 2 × MIC) and times (0–24 h), revealing that LGFEO could cause cell material leakage, antioxidant enzyme inactivation, H 2 O 2 and MDA accumulation, and bacterial growth inhibition. Also, antibacterial action of LGFEO was conducted on key enzymes of respiratory metabolic (glycolysis, oxidative pentose phosphate pathway, tricarboxylic acid cycle, and respiratory chain), and the levels of intracellular ATP, ADP, nicotinamide adenine dinucleotide (NAD + and NADH), nicotinamide adenine dinucleotide phosphate (NADP + and NADPH), and oxidized and reduced glutathione (GSSG and GSH) in LGFEO-treated S. flexneri cells, indicating a role of LGFEO in repressing respiratory pathway and electron transport with low redox potential. All these revealed that LGFEO could effectively induce H 2 O 2 accumulation and lipid peroxidation, resulting in cell membrane damage and metabolic function disruption, giving rise to a disturbance of redox homeostasis, which may be the main cause of growth inhibition or cell death for S. flexneri . • Essential oil contains 70 volatile compounds with good antimicrobial activity. • The first time for antibacterial mechanism from energy and respiratory metabolism. • Antibacterial action of essential oil involves in H2O2-mediated oxidative stress. •Essential oil-induced disruption of redox homeostasis as main antibacterial action.

Inhibition efficacy of Tetradium glabrifolium fruit essential oil against Phytophthora capsici and potential mechanism

Phytophthora capsici is a notorious pathogen capable of infecting various host plants and causing serious threats to agriculture worldwide. Tetradium glabrifolium fruit essential oil (TFO) is widely utilized in traditional Chinese medicine treatment, but its antimicrobial activity is unknown. In this study, we first investigated the inhibitory efficacy of TFO against P. capsici and found TFO strongly inhibited the development of phytophthora blight on pepper by in vivo inoculation assay. Second, we found TFO could significantly suppress vegetative and reproductive growth of P. capsici in vitro. Microscope observations indicated that TFO destroyed the mycelial morphology and cellular ultrastructure of P. capsici. Additionally, TFO could damage the cell membrane integrity of the pathogen, leading to cellular leakages of intercellular contents of P. capsici. Third, TFO could enhance the activities of defence-related enzymes in pepper fruits during pathogen infection. Finally, we identified the chemical composition of TFO by GC-MS analysis and demonstrated three abundant components (D-limonene, β-elemene, and 2-tridecanone) contributed to the antifungal activity of TFO. Together, out results revealed that TFO had outstanding inhibitory efficacy against P. capsici, and uncovered its potential antifungal mechanism. This study would propose the application of TFO as an efficient alternative approach for controlling phytophthora blight.

The effect of essential oils on cholesterol content in chicken meat

The study aimed to investigate cholesterol content in chicken breast and thigh muscles by the influence of feed supplements of various content of essential oils. The experiment was carried out under practical conditions in a poultry farm with broiler chickens of the Cobb 500 hybrid combination according to the feed supplement used thyme essential oil, cinnamon essential oil, commercial citrus fruit essential oil, and their combination. The control group was without the use of experimental feed supplements and commercial coccidiostats were used in their feed mixtures. The experiment lasted 40 days in welfare conditions. Broiler chickens were used for sample preparation of breast and thigh muscles with the skin and their analysis for dry matter, fat and cholesterol contents. Samples were analyzed using a Nicolet 6700 FT-IR Fourier transform infrared spectrometer. The results were processed by the SAS system program, version 8.2. The results, which were evaluated, indicated a tendency to reduce the cholesterol content in chicken breast muscle due to cinnamon essential oil and the combination of cinnamon essential oil with citrus fruit essential oil as well as thyme essential oil with citrus fruit essential. In the achieved results of dry matter, fat, and cholesterol content in breast and thigh muscles, the difference between the effects of the used feed supplements based on essential oils and concerning the control group were not statistically significant p &gt;0.05. The correlation was a statistically significant strong linear relation only between dry matter content and fat content due to thyme and cinnamon essential oils. In conclusion, it was stated that the investigation of the feed supplement effect based on essential oils is an open question concerning the production of safe food of animal origin.

Compositional Analyses and Cytotoxic Activity of Star Anise (Illicium Verum) Essential Oils in Vietnam

By means of the gas chromatography-mass spectrometry (GC/MS) method, 21 volatile components have been identified in the essential oils of fruits and the leaves of star anise (Illicium verum Hook. f., Illiciaceae) in Vietnam, in which, essential oil of star anise fruits has 18 components, essential oil of star anise leaves has 16 components, with content have been determined more than 98.60% total compounds of essential oil. The major compound was identified as trans- anethole with 87.05% in leaves essential oil and 90.12% in fruits essential oil. The in vitro anti-cancer activity of star anise essential oil was evaluated by cytotoxicity assay. The results showed that the essential oil obtained from leaves of star anise inhibited the grow of liver cancer cell (IC50 = 10.22 µg/ml) and colon cancer cell (IC50 = 6.26 µg/ml). The essential oil obtained from fruits of star anise inhibited the grow of liver cancer cell and colon cancer cell with the IC50 values of 5.93 and 3.20 µg/ml, respectively.

Volatile Composition and Biological Activity of Jordanian Commercial Samples of R. coriaria L. Fruits.

The present paper reports the GC-HS-SPME analysis of volatile emission and GC-MS analysis of chemical composition of essential oil of R. coriaria fruits of eight different samples of R. coriaria L. fruits (“sumac” folk name), collected from Jordanian agricultural field and the local market. The analyses show an important variability among the Sumac samples probably due to the origin, cultivation, harvesting period, drying, and conservation of the plant material. The main class of component present in all samples was monoterpenes (43.1 to 72.9%), except for one sample which evidenced a high percentage of sesquiterpene hydrocarbons (38.5%). The oxygenated monoterpenes provided a contribution to total class of monoterpenes ranging from 10.1 to 24.3%. A few samples were rich in monoterpene hydrocarbons. Regarding the single components present in all the volatile emissions, β-caryophyllene was the main compound in most of the analyzed samples, varying from 34.6% to 7.9%. Only two samples were characterized by α-pinene as the main constituent (42.2 and 40.8% respectively). Essential oils were collected using hydro-distillation method. Furfural was the main constituent in almost all the analyzed EOs (4.9 to 48.1%), except in one of them, where β-caryophyllene was the most abundant one. β-caryophyllene ranged from 1.2 to 10.6%. Oxygenated monoterpenes like carvone and carvacrol ranged from 3.2–9.1% and 1.0–7.7% respectively. Cembrene was present in good amount in EO samples EO-2 to EO-8. The antioxidant capacities of the fruit essential oils from R. coriaria were assessed using spectrophotometry to measure free radical scavenger 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical and inhibition of β-carotene bleaching (BCB). The essential oils from the fruits of the different samples of R. coriaria exhibited the MIC value ranging from 32.8 to 131.25 µg/mL against S. aureus ATCC 6538 and 131.25 to 262.5 µg/mL against E. coli ATCC 8739. The MIC values of ciprofloxacin were 0.59 and 2.34 µg/mL against S. aureus ATCC 6538 and E. coli ATCC 8739, respectively.

Cynometra cauliflora L.: An indigenous tropical fruit tree in Malaysia bearing essential oils and their biological activities

Cynometra cauliflora L., locally known as “ nam-nam ” or “ katak puru-puru ” in Malaysia is belonging to the Fabaceae family. The tree is native to Malaysia and has been used traditionally as folk medicine. Limited works have been conducted on C. cauliflora regarding its chemical composition. In view of this, the present study aimed to identify the essential oil (EO) composition of the leaf, twig and fruit of C. cauliflora and evaluate their antioxidant, antimicrobial and cytotoxic activities. EOs obtained from different parts of the tree were analyzed using capillary GC and GC/MS. Twenty-six, seventeen and fifty constituents were identified in the leaf, twig and fruit EOs of C. cauliflora . Results demonstrated the dominance of monoterpenes hydrocarbons in the leaf oil and oxygenated monoterpenes in the twig oil. On the contrary, fruit oil was abundant in oxygenated sesquiterpenes. Different chemical profiles were found in different parts of EOs which have contributed to varied biological activities. Twig oil (IC 50 37.12 ± 2.84 µg/mL) showed better antioxidant power than the leaf (IC 50 207.17 ± 2.95 µg/mL) and fruit oils (IC 50 461.88 ± 12.61 µg/mL) in DPPH assay. Additionally, twig oil inhibited an entire range of microorganisms tested with inhibition zones ranging 10.3 ± 0.4 to 29.7 ± 0.4 mm. The twig oil displayed low MIC and MBC values against Staphylococcus aureus (MIC 125.0 µg/mL; MBC 250.0 µg/mL) and MRSA (MIC 125.0 µg/mL; MBC 250.0 µg/mL). In in vitro MTT assay, twig oil showed anti-proliferative effects against human breast cancer MCF-7 cells.

Performance Analysis of MAU-9 Electronic-Nose MOS Sensor Array Components and ANN Classification Methods for Discrimination of Herb and Fruit Essential Oils

The recent development of MAU-9 electronic sensory methods, based on artificial olfaction detection of volatile emissions using an experimental metal oxide semiconductor (MOS)-type electronic-nose (e-nose) device, have provided novel means for the effective discovery of adulterated and counterfeit essential oil-based plant products sold in worldwide commercial markets. These new methods have the potential of facilitating enforcement of regulatory quality assurance (QA) for authentication of plant product genuineness and quality through rapid evaluation by volatile (aroma) emissions. The MAU-9 e-nose system was further evaluated using performance-analysis methods to determine ways for improving on overall system operation and effectiveness in discriminating and classifying volatile essential oils derived from fruit and herbal edible plants. Individual MOS-sensor components in the e-nose sensor array were performance tested for their effectiveness in contributing to discriminations of volatile organic compounds (VOCs) analyzed in headspace from purified essential oils using artificial neural network (ANN) classification. Two additional statistical data-analysis methods, including principal regression (PR) and partial least squares (PLS), were also compared. All statistical methods tested effectively classified essential oils with high accuracy. Aroma classification with PLS method using 2 optimal MOS sensors yielded much higher accuracy than using all nine sensors. The accuracy of 2-group and 6-group classifications of essentials oils by ANN was 100% and 98.9%, respectively.

Antibacterial Activity and Interaction Effects of Litsea Cubeba Fruit Essential Oil and Chitosan Against Food-Borne Bacteria

The aims of this study were to investigate the antibacterial activity and interaction effect of Litsea cubeba fruit essential oil (EO) and chitosan (CTS) against food-borne bacteria. The inhibition zone of EO, CTS and EO-CTS mixture against Escherichia coli ATCC 25922, Salmonella typhimurium ATCC 14028, Staphylococcus aureus ATCC 25923 and Bacillus cereus ATCC 13061 ranged from 39.0 - 57.3 mm; 11.7 - 15.5 mm and 29.7 - 39.3 mm, respectively. The minimum inhibitory concentration (MIC) of EO and CTS were 5.53 mg/mL and from 0.60 - 0.80 mg/mL, respectively. The synergistic effects were found when EO and CTS were used in combination with fractional inhibitory concentration values ranging from 0.62 - 0.67. The MIC of the EO and CTS combination was decreased from 6 to 8-fold and 2-fold compared to individual treatment by EO and CTS, respectively. The obtained results demonstrated the potential application of EO-CTS mixture in food preservation.

The Essential Oil of the Fruits of Ferula stenocarpa Boiss. &amp; Hausskn: Powerful Analgesic and Anti-inflammatory Effects

Ferula stenocarpa is an aromatic herb whose fruits are widely used in Persian traditional medicine as a painkiller and to relive inflammation-based disorders. Considering the higher content of essential oil in the fruits, the oil’s anti-inflammatory and analgesic activities were investigated in an animal model in vivo. The analgesic effect of Ferula stenocarpa fruits essential oil was evaluated via testing the writhing triggered by acetic acid examination and hot plate technique. Moreover, the acute anti-inflammatory effects were studied through the paw edema triggered in mice. Using 20 and 40 mg/kg of the oil revealed an analgesic impact considering the increment in the reaction time needed for the hot plate approach. Furthermore, all examined doses of the oil caused a reduction in the frequency of writhes in the mice. It was observed that the oil (40 mg/kg) followed by 10 and 20 mg/kg caused inflammatory reduction. The findings indicated that the oil may possess significant activities against acute inflammation. It had both peripheral and central pain-killing impacts. α-Pinene (43.1%) and β-pinene (22.9%) as the main constituents of the oil, can be considered as the responsible compounds to manage inflammation and pain.

Chemical Composition and Biological Activities of the Essential Oils of Chrysophyllum albidum G. Don (African Star Apple)

The volatile compounds of the fruit and leaf essential oils of the African star fruit, Chrysophyllum albidum G. Don, were characterized by gas chromatography-mass spectrometry in this study. The antimicrobial, antibiofilm, and antioxidant activities of the essential oils were also investigated. Thirty-five and thirty-four compounds, representing 97.84% and 97.87%, were identified in the leaf and fruit essential oils, respectively. The antimicrobial activity of the oils was evaluated in vitro against eight pathogens using the broth microdilution method. The fruit essential oil exhibited broad-spectrum antimicrobial activity in the antimicrobial susceptibility test, with minimum inhibitory concentrations (MICs) ranging from 0.195 to 6.250 mg/mL, while the leaf essential oils showed antimicrobial activity with MICs in the range of 6.875–13.750 mg/mL. The antibiofilm activity was assessed via the crystal violet staining assay, with Pseudomonas aeruginosa as the model organism. The concentrations of the leaf and fruit essential oil required for half-maximal inhibition of biofilm formation (BIC50) were 6.97 ± 0.56 and 4.78 ± 0.21 mg/mL, respectively. In evaluating antioxidant activity, the total antioxidant capacity obtained from the phosphomolybdenum assay was 104.8 ± 2.4 and 101.6 ± 0.8 μg/g AAE for leaf and fruit essential oils, respectively. The IC50 values obtained from the hydrogen peroxide scavenging, 1,1-diphenyl-2-picrylhydrazyl (DPPH) free radical scavenging, and inhibition of lipid peroxidation assays were 301.8 ± 0.7 and 669.2 ± 2.1 μg/mL, 1048.0 ± 0.3 and 1454.0 ± 0.3 μg/mL, and 460.1 ± 2.7 and 457.4 ± 0.3 μg/mL for both leaf and fruit essential oils, respectively. The results obtained in this study suggest that the leaf and fruit essential oil of Chrysophyllum albidum G. Don could find potential use in the food, cosmetic, and pharmaceutical industries as preservative and pharmaceutical agents.