Steam Hydrodistillation Research Articles

The Effect of Harvest Time of Sapu-Sapu Leaves (Baeckea frutescens L.) the Yield, Characteristics and Composition of Essential Oils Extached Using Steam-Hydro Distillation Method

The sapu-sapu plant (Baeckea frutescens L.) is widespread in the Bangka Belitung Islands Province, thriving in sandy areas such as beaches and highlands with less fertile soil. This study aimed to determine the optimal harvest time for sapu-sapu leaves to obtain essential oils' highest yield and most desirable characteristics. The research focused on the duck-type sapu-sapu leaves, using five variations of harvest time (coded as A1, A2, A3, A4, and A5, representing leaves harvested at 1, 2, 3, 4, and 5 months of growth, respectively). Essential oil extraction was performed using the steam distillation method. The resulting oils were then analyzed using Gas Chromatography-Mass Spectrometry (GC-MS) to determine their chemical composition. The results showed that sample A1 (1-month growth) produced the highest essential oil yield at 0.74% (w/w). This sample also exhibited the most optimal essential oil characteristics: clear yellow color, characteristic sapu-sapu odor, warm bitter taste, solubility in 96% ethanol at 1:13, specific gravity of 0.8863 g/mL, optical rotation of (+) 10.28°, and refractive index of 1.474. GC-MS analysis revealed that the main compounds in the A1 sample were α-pinene (43.84%), β-pinene (13.56%), and 1,8-cineol (24.26%). The study concluded that while the variation in harvest time of sapu-sapu leaves did not significantly affect the yield, characteristics, or composition of the essential oils, there were slight differences in yield and color. Sample A1, representing the youngest leaves, produced the most optimal results.

Convolutional neural networks to assess bergamot essential oil content in the field from smartphone images

The essential oil (EO) extracted from bergamot peel (Citrus bergamia, Risso et Poiteau) is appreciated in perfumery and gastronomy. Notably, 90 % of the bergamot EO production is concentrated in the Province of Reggio Calabria (Southern Italy) under a protected designation of origin (PDO). The early estimation of EO content in fruits is fundamental to help farmers in their decision at harvesting period. The application of advanced modelling techniques based on artificial intelligence and digital device technology can contribute to this goal. This study proposes a method to estimate the EO content of fruits in the field using classification and regression models based on a deep learning approach in two cultivars: cv. “Fantastico” and cv. “Femminello”. The first step was to capture images of the fruit in the Red, Green, and Blue colours (RGB) using a mid-range smartphone camera and a portable inspection chamber designed and developed for this study. The acquisition of the images was carried out in the field. The fruits were collected and transported to the laboratory, where the EO was extracted using steam hydrodistillation. Custom-built convolutional neural networks (CNN) and three transfer learning models (VGG-16, VGG-19, and Xception architectures) were trained and applied for classification (among different discrete levels of oil content) and regression (to predict the EO content). The classification results showed an accuracy of 0.795 and 0.797 on the test samples of the two cultivars separately, while the best regression model achieved a minimum mean squared error of 0.12 and 0.04 for each cultivar, respectively. The results showed the effectiveness of the approach tested and how modelling each variety independently can lead to better performance for the CNNs tested.

Karakteristik dan Komposisi Minyak Atsiri dari Sampel Gabungan Daun-Ranting Limau Kuit Asal Astambul dan Aranio

Limau kuit is believed to be a local orange from South Kalimantan. Limau kuit has a distinctive aroma different from other oranges and is thought from its essential oil. The essential oil from limau kuit has the potential to be extracted and produced into valuable goods. Limau kuit essential oil from a combination of leaves and twigs has never been reported before. The composition of essential oils is influenced by genetic and environmental factors. The region producing limau kuit in Kabupaten Banjar is in Kecamatan Astambul and Kecamatan Aranio. These places geographically have different conditions, especially the altitude of the location, so it is thought to have a difference in the essential oils. This research aims to obtain essential oil from the leaves and twigs of limau kuit by hydrosteam distillation and determine the characteristics and composition of each plant's origin. Hydrosteam distillation was carried out for 6 hours at 60-70 °C. The essential oil of leaves and twigs of limau kuit is transparent pale yellow and has an aroma similar to the source with an average yield of 0.6027% (v/w) or 0.5062% (w/w). The specific gravity, refractive index, optical rotation, and solubility in alcohol, respectively, of Astambul essential oil are 0.8540; 1.4792; (-14.05); and 1:6; and Aranio 0.8495; 1.4792; (+)0.16, and 1:7. Based on the results of GC-MS analysis, the components of Astambul and Aranio essential oils overall tend to be the same with a difference of 25%. Number of compounds in essential oil from Astambul was 32, while from Aranio was 38. The three main compounds in essential oils from Astambul and Aranio are g-terpinene, o-cymene, and (+)-bicyclogermacrene, with the respective %area in Astambul essential oil, was 25%; 13.22%, and 6.38%; and Aranio was 22.43%; 11.68%; and 5.88%.KEYWORD : Limau kuit leaves-twigs; essential oil; hydrosteam distillation; Astambul; Aranio.

COMPARATIVE CHARACTERISTICS OF THE LOW MOLECULAR WEIGHT METABOLOME OF MACROPHYTES IN DIFFERENT WATER BODIES IN THE WATER AREA OF THE KANDALAKSHA BAY OF THE WHITE SEA

The Kandalaksha Bay of the White Sea underwent a first-of-its-kind comparative examination of the composition of essential oils of structure-forming macrophytes growing in freshwater and saltwater habitats. The essential oils of the aquatic macrophytes Nuphar lutea (L.) Sm., Ruppia maritima L., Zostera marina L., Fucus vesiculosus L., and Ascophyllum nodosum (L.) Le Jolis were obtained by steam hydrodistillation using the Clevenger apparatus from dried plants. Gas chromatography-mass spectrometry (GC/MS complex SHIMADZU GCMS-QP2010 Ultra) was used to analyze the qualitative and quantitative composition of LMWOCs (low molecular weight organic compounds). The component composition of the low molecular weight metabolome (LM) of macrophytes was shown to depend on both plant species specificity and plant habitat conditions (hydrological features, trophic state). More LMWOCs are found in plants from freshwater habitats than from marine ones. The investigated plants had only a few major compounds, ranging in number from 4 to 14. They accounted for between 70 and 83% of the overall concentration of all compounds in freshwater N. lutea and between 82 and 95% of the total concentration of LMWOCs in marine macrophytes. The most significant (% of the total essential oil) main components in macrophytes were carboxylic acids, specifically hexadecanoic, tetradecanoic, linoleic, and linolenic. The outcomes gained proved that the presence of carboxylic acids is a sign of a healthy macrophyte environment. The composition of LM of plants from northern habitats (marine and freshwater) contains high total concentrations of LMWOCs (including valuable ones from the perspective of economic use), making it possible to consider them as a valuable natural renewable resource for obtaining raw materials for various economic uses.

COMPARATIVE ANALYSIS OF CHEMICAL COMPOSITION OF THYMUS SERPYLLUM L. AND THYMUS MARSCHALLIANUS WILLD. ESSENTIAL OILS BY GAS-LIQUID CHROMATOGRAPHY WITH MASS SPECTROMETRY DETECTION

Introduction. Plant essential oils are natural sources of the different compounds, the action of which in the macroorganism is determined by their chemical composition, depending on environmental factors, including plant species. Aim. The aim of the study was to compare the chemical composition of essential oils, obtained from the aerial parts of Thymus serpyllum L. and Thymus marschallianus Willd. (Lamiaceae). Material and methods. The plant raw materials of Thymus marschallianus were collected in the flowering phase in the Saratov region in June, the plant raw materials of Thymus serpyllum were purchased in the pharmacy network. The essential oils were obtained by Ginsberg’s steam hydrodistillation method. Analysis of their chemical composition was performed by gas-liquid chromatography with mass spectrometry detection. Results. The main components of both types of the essential oils were represented by thymol and its isomers, their mass fraction in the essential oil of T. marschallianus is 38.4, in the essential oil of T. serpyllum is 44%. The comparative analysis was carried out using the non-parametric Mann-Whitney criterion. Statistically significant differences with 95% probability were established for tricyclic sesquiterpene alkenes, the total content of which in the essential oil of T. marschallianus is 4.73%, in the essential oil of T. serpyllum – 3.59%. Conclusion. According to their chemical composition the essential oils of the mentioned plant species belong to phenolic chemotype and are similar in the major compounds.

Antimicrobial activity of essential oil fractions of Siberian fir and Scotch pine

Introduction. Plants of the pine family, growing mainly in the Northern Hemisphere, are of interest both from an economic and medical point of view. The antimicrobial properties of essential oils of coniferous plants are being actively studied. Objective: to study the antimicrobial activity of the essential oil fractions of Siberian fir and Scotch pine growing in the Krasnoyarsk Territory. Material and methods. Essential oils were isolated by hydrosteam distillation on an all-metal installation with a Clevenger nozzle. The component composition of the essential oil fractions was determined by gas chromatography-mass spectrometry. The disc diffusion method was chosen to detect the antimicrobial activity of essential oil fractions. The following test cultures were used: Staphylococcus aureus (MSSA), Staphylococcus aureus (MRSA), Escherichia coli, Pseudomonas aeruginosa, Candida albicans. Results. In all fractions of the essential oil of Siberian fir and Scotch pine, monoterpenoids predominate, the dominant components are bornylacetate and pinene, respectively. All fractions of both oils showed antimicrobial activity against Staphylococcus aureus (MRSA), Staphylococcus aureus (MSSA) and Candida albicans. Isolated individually dominant compounds bornylacetate (Siberian fir) and pinene (Scots pine) also showed antimicrobial activity. Conclusion. The antimicrobial activity of individual fractions of essential oils of Siberian fir and Scotch pine and the dominant components of the fractions against Staphylococcus aureus (MSSA and MRSA), Escherichia coli, Pseudomonas aeruginosa, Candida albicans was studied. The activity of the fractions is largely due to the dominant components. The fractions enriched in monoterpenoids showed the highest activity. The strain of Staphylococcus aureus (MRSA) turned out to be the most sensitive to the fractions of essential oils.

Steps to achieve carvone-rich spearmint (Mentha spicata L.) essential oil: a case study on the use of different distillation methods.

Spearmint essential oil is a valuable medical and food product. Spearmint essential oil is effective for the treatment of flatulence, indigestion, nausea, and colic along with Alzheimer, obesity, and fungal infections. This study evaluated the quality and quantity of spearmint essential oil by examining some extraction strategies. The procedures were hydro-distillation, hydro-steam distillation, microwave-assisted hydro-distillation, and open hydro-distillation. The hydro-distillation had five pH levels (2, 4, 6, 8, and 10) and four NaCl concentrations (0.5, 1, 1.5, and 2%). microwave-assisted hydro-distillation at a power of 225 W was applied for 60, 90, and 120 minutes for process durations. The solvent extraction of herbal distillate obtained by an open hydro-distillation system was done using n-pentane and n-hexane to achieve a recovered essential oil by a rotary evaporator. The results showed that the lowest pH in the hydro-distillation process led to obtaining double yield compared to the control. Additionally, at 1 and 1.5% NaCl concentrations, the oil yield increased by 12.86 and 20.87%, respectively. Although the yield was reduced by microwave-assisted hydro-distillation, however within 120 minutes, carvone increased by 12.7% and limonene decreased by 42.3%. The best quality of spearmint oil belonged to solvent extraction followed by rotary evaporator.

Evaluation of characteristics of cajuput oil by steam-hydro distillation (Melaleuca leucadendra L.)

Cajuput oil is one of the types of essential oil that is most widely used by the society. Cajuput oil is obtained through a distillation process. The aim of this study was to determine the characteristics of cajuput oil. The raw material used is fresh cajuput leaves and the distillation process carried out is the steam-hydro distillation method. The characteristic analysis seen in this research includes yield of oil, water content of cajuput leaves, refractive index and sensory of the aroma and color of cajuput oil. The results showed cajuput oil with a yield value of 0.6%, water content of cajuput leaves of 64.36%, refractive index value of 1.470, aroma of cajuput leaves, and yellow color of cajuput oil. The characteristic of cajuput oil in this research was meet the Indonesian National Standard of cajuput oil.

In-vitro Antibacterial Potentials of Essential oil from Citrus limon against Selected Pathogenic Bacteria Isolated from Cultured Nile Tilapia (Oreochromis niloticus)

Essential oils (EOs) from medicinal plants like lemon (Citrus limon) are considered promising to replace synthetic antibiotics in aquaculture production due to their ability to improve fish health. The aim of the research was to investigate the in vitro antibacterial potentials of varying levels of lemon EO against Streptococcus agalactiae, Escherichia coli, Staphylococcus aureus and Aeromonas hydrophila isolated from Nile Tilapia. This research was conducted at the Microbiology unit., Kenyan Marine and Fisheries Research Institute, Mombasa, Kenya and Environmental Microbiology and Biotechnology Laboratory, Department of Microbiology, University of Ibadan, Ibadan, Nigeria in December 2021. Extraction of EO from lemon peel was performed using steam hydro distillation. The quantitative and qualitative profiling of extracted oil was performed using Gas Chromatography-Mass Spectrometry. The antibacterial potential of lemon EO was tested against some pathogens using the agar well diffusion method while the Minimum Inhibitory Concentrations (MIC) and Minimum Bactericidal Concentration (MBC) were determined by the broth dilution method. The most abundant chemical was D-Limonene (37.56%), 3-Carene (15.88%) and Terpinen-4-ol (93.4%). The lemon EO at 100% and 50% concentration respectively showed the highest antibacterial activity against S. agalactiae (26.00mm and 28.33mm) and E. coli (33.00mm and 30.00 mm); while the least activity was observed against A. hydrophila (8.33mm and 6.67 mm) at P = .05. The MIC and MBC values revealed that 50% lemon EO inhibited bacterial growth for S. agalactiae whereas it was greater than 50% for S. aureus, E. coli and A. hydrophila. Lemon EO has potential antibacterial properties against tested pathogens that affect cultured fish and could be considered a good candidate for further research to develop new antibacterial drugs in aquaculture.

Production Rate Analysis of Citronella Essential Oil Using Distillation Method

Semoyo is one of the districts located in Gunungkidul Regency. The community engages in the cultivation of traditional medicinal plants. One of the most widely cultivated plants is citronella. The community produces a significant amount of citronella, but it has yet to be processed into high-value economic products. Currently, citronella has emerged as a promising commodity because it can be used as a raw material to produce essential oil. The production of citronella essential oil is carried out through steam-hydro distillation. This research aims to test the distillation characteristics to determine the potential production of citronella essential oil and to decide the rate and capacity of essential oil production using citronella as the raw material. Based on the test results, the optimal duration for the distillation process of 2,000 grams of citronella was 60 minutes, with a maximum duration of 90 minutes. The yield of citronella essential oil obtained from this test was 0.414%. The resulting citronella essential oil had a density of 0.920 grams/mL, a clear appearance, a distinctive lemongrass aroma, and a light-yellow color. These criteria meet the SNI 3953:2019 for citronella essential oil

ANTIRADICAL ACTIVITY OF EXTRACTIVE SUBSTANCES OF LEDUM POLUSTRE L., GROWING IN THE KRASNOYARSK TERRITORY

In model reactions with a free stable 2,2-diphenyl-1-picrylhydrazyl radical, the antiradical activity (ARA) of extractive substances of wild rosemary (Ledum palustre L.) growing in the Krasnoyarsk Territory was studied: aqueous-alcoholic extracts with an alcohol content of 20, 40 and 70%, water and alcohol extracts and essential oil. Whole essential oil obtained by exhaustive hydrosteam distillation for 8 hours. The component composition of the essential oil was determined by chromato-mass spectrometry using a data bank on mass spectra and on the analysis of linear retention indices. At least 35 individual compounds were identified in the essential oil and their quantitative content was determined.
 The leaves of wild rosemary collected at the beginning of flowering in early June in the Partizansky district of the Krasnoyarsk Territory were used as raw materials. The extracts were obtained using a sample of air-dry raw materials in the amount of 1.00 grams, the extraction hydromodule was 1:100, the extraction time was 1.0 hours.
 The results of the DPPH test showed that the antiradical activity of the obtained extracts changes in the following order: essential oil > 40% extract > 70% extract > 20% extract > aqueous extract. Moreover, the essential oil of wild rosemary has an ARA value of 82.7% even when diluted 1:10.
 The obtained extracts were studied by electron spectroscopy in the UV region. It is shown that the extracts contain phenolic compounds represented by phenolcarboxylic acids and flavonoids. In the extracts obtained, the total content of phenolic compounds was determined (by reaction with the Folin-Ciocalteu reagent), which is 0.52–1.05 wt.% in terms of gallic acid. Moreover, this value passes through a maximum in the case of 40% alcohol extract. By reaction with aluminum chloride, the total content of flavonoids in the extracts was determined. It was found that the content of flavonoids in the extracts is 0.73–2.00 wt.% in terms of routine. The maximum content of flavonoids was found in 70% alcohol extract.
 It is shown that the ARA value correlates well with the total content of phenolic compounds - the correlation coefficient is 0.9512, and no correlation is observed with the total content of flavonoids.

EKSTRAKSI DAN KARAKTERISASI MINYAK ATSIRI DARI DAUN LIMAU KUIT DENGAN METODE DISTILASI UAP–AIR DAN KONDENSOR BOLA TERMODIFIKASI SERTA ANALISIS KOMPOSISINYA MENGGUNAKAN GC-MS

Limau kuit is a typical orange from South Kalimantan which is used by the Banjar people in some certain local culinary. This experiment is explorative research that aims to determine the yield of essential oils obtained by hydrosteam distillation method with ball condenser (type of Allihn) cooling, to determine the characterization of the oil comprising specific gravity, refractive index, optical ratation, solubility in alcohol, the composition of using GC-MS. The leaves of limau kuit were air-dried for one week to decrease the water content and then were cut into smaller pieces about 5 mm in size. A 2.050 grams of the sample lay into the tray of the distillation kettle which was filled with adequate water. The distillation was carried out for about 6 hours and 50-60oC in temperature. The results showed that the performed extraction yielded 0.59%-(v/w) or 0.52%-(w/w) of oils. The oil values of specifie graviry, refractive index, optical ratation, and solubility in alcohol 90% were 0.8285, 1.472, (-)1.90, and 1:4 respectively. The CG-MS analysis showed 31 chemical compounds of the oils and these were five the dominants: γ-terpinene (24,19%), followed by prehnitene (18,26%), (+)-4-carene (8,53%), β-cis-ocymene (7,20%), and β-pinene (5,46%) respectively.

Screening assessment of antibacterial activity of Thymus serpyllum L., Thymus marsсhallianus Willd. and Pimpinella anisum L. essential oils against uropathogens, isolated from pregnant women

Plant essential oils of certain genera and species are important sources of antimicrobial substances.The goal of this study was a screening assessment of antibacterial activity of Thymus serpyllum L., Thymus marsсhallianus Willd. and Pimpinella anisum L. essential oils against opportunistic gram-negative uropathogens. The essential oils were obtained by steam hydrodistillation, and the screening assessment of their antibacterial activity was performed by the disk diffusion method. Two standard species (Pseudomonas aeruginosa ATCC 27853, Escherichia coli ATCC 25922) and 6 clinical strains (1 — P. aeruginosa, 5 — E. coli), isolated from the pregnant women with infections of the urinary passages, were used as the test bacterial cultures. The study determined that T. marsсhallianus Willd. and T. serpyllum L. essential oils possess strong inhibitory action on all test cultures until the absence of the bacterial lawn. P. anisum L. essential oil did not show antibacterial activity against all test strains, no zones of visible bacterial growth inhibition were formed. T. serpyllum L. and T. marsсhallianus Willd. essential oils are promising antibacterial agents against uropathogens of the species P. aeruginosa and E. coli.

Downregulation of NF-κB activation pathways using essential oil derived from Citrus pseudolimon: Anticancer and anti-inflammatory potential

This study focuses on isolating and characterizing the essential oil obtained from Citrus pseudolimon (C. pseudolimon) fruit peel for inhibition of cancer and inflammation through the downregulation of nuclear factor-kappa B (NF-κB) activation pathways. C. pseudolimon essential oil (CPEO) was isolated through steam-hydro distillation and characterized through GC-MS. The 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl-2H-tetrazolium bromide (MTT) assay was performed to evaluate its anticancer potential against colon, leukemia, multiple myeloma, pancreatic, lung, and squamous carcinoma cells. The expression of proteins involved in cell proliferation like Cyclin E1 and intercellular adhesion molecule 1 (ICAM-1), anti-apoptotic proteins i.e. X-linked inhibitor of apoptosis protein (XIAP), capsapse-3, and poly-ADP ribose polymerase (PARP) was studied through western blotting analysis. The constituents were separated and limonene, limonene oxide, α-pinene, mentha-6,8-diene, 2-hydroperoxide, cis-carveol, and β-Myrcene were the major ones. CPEO exhibited a dose-dependent inhibition of cell proliferation up to 83–98% for 100 μg/mL oil. Flow cytometry analysis revealed that CPEO treatment in cancer cells induced a decrease in DNA contents in the synthesis (S-phase) of the cell cycle. Furthermore, CPEO downregulates the NF-κB; an inflammatory transcription marker and repressed the expression of genes regulated by NF-κB like Cyclin E1, ICAM-1, and XIAP responsible for cell proliferation and anti-apoptosis. Results revealed that CPEO adopt various mechanisms and routes like arresting of S-phase in cell cycle, induction of apoptosis, anti-inflammatory and anti-metastatic activities to induce death in cancer cells. The auspicious and persuasive bioactivities of CPEO showed that it might be very effective herbal medicine against this deadly disease.

COMPONENT COMPOSITION OF ESSENTIAL OIL AND ANTIOXIDANT ACTIVITY OF POTAMOGETON PERFO-LIATUS L. (POTAMOGETONACEAE) GROWING IN THE ASTRAKHAN REGION

For the first time, the component composition of the low-molecular-weight metabolome of perfoliate pondweed (Potamogeton perfoliatus L., family Potamogetonaceae), which grows in the Astrakhan region (lower zone of the Volga river delta), has been investigated. Low molecular weight organic compounds (LMWOCs) in the composition of essential oil were obtained from dried plants by steam hydrodistillation using the Clevenger apparatus. The qualitative and quantitative compositions of the LMWOCs were investigated using gas chromatography-mass spectrometry (GC/MS complex TRACE ISQ (Thermo Scientific) with a quadrupole mass analyzer). The low molecular weight metabolome of P. perfoliatus contained 164 components, of which 151 were identified. Major LMWOCs were carboxylic acids – tetradecanoic (69.7%) and hexadecanoic (10.1%), as well as phytol (3.4%) and phyton (1.4%), characterized by diverse biological activities. The antioxidant activity of an aqueous-alcoholic extract of P. perfoliatus was investigated by a photometric method based on the reaction of DPPH (2,2-diphenyl-1-picrylhydrazyl) dissolved in ethanol with an antioxidant sample. It has been shown that P. perfoliatus extract has more pronounced antioxidant properties than the tested drugs (ascorbic acid and emoxipine). P. perfoliatus from the lower zone of the Volga River delta can be considered as a naturally renewable resource for obtaining raw materials for creating effective composites of new generation algicides to combat cyanobacterial "bloom", as well as for obtaining valuable natural forms of LMWOCs of plant origin for various types of application in pharmacology, medicine, cosmetology, food industry, and other industries.

Extraction of Essential Oil Form Sweet Lime Orange Peel: A Comparison Study

This research work was designed to extract essential oil from sweet lime peel (solid waste). The feed material selected for study is sweet lime peel. The disposal of waste product such as peels often has a legal restriction problem and treatment process involved requires higher costs. Transformation of this waste in to useful products could cut global treatment costs. Hence the objective of our experimental work was to convert sweet lime peel in to essential oil which is in huge demand in food, pharma and cosmetic industry. In our experimental work eextraction of essential oil was evaluated and comparison study was made between steam distillation, hydro-distillation, solvent extraction and hydro-steam distillation. Maximum extraction yield of 2.4 % was achieved at 90 min of contact by hydro-distillation. Hydro-distillation method offers advantages in comparison with other three methods in terms of energy saving, cleanliness and reduced waste water. Chemical constituents of essential oil samples were evaluated in terms of qualitative and quantitative analyses by gas chromatography/mass spectrometry and physical techniques. The chemical profile includes thirty two components which were identified in the extracts by Gas chromatography-Mass spectroscopy (GC-MS) analysis. The dominant component identified was limonene (65 .2 to 72.8%).

Essential Oil and Leaves from Lantana camara Significantly Ameliorate Different Cancer Cell Lines by Suppressing the NF-κB Pathway

The anticancer and anti-inflammatory activities of wild-sage (Lantana camara) leaves essential oil were evaluated against various human cell lines. In this regard, steam hydro-distillation technique was used for oil extraction. Chemical characterization of L. camara essential oil (LCEO) was done by GC-MS, and forty one chemical components (98.69%) were detected in leaves of LCEO. The major constituents were caryophyllene oxide (19.63%), caryophyllene (6.68%), β-phellandrene (6.48%), humulene epoxide II (5.68%), spathulenol (4.17%), α-pinene (3.27%), eucalyptol (3.09%), α-cyclocitral (2.89%), β-pinene (2.38%), and nerolidol II (2.33%). Moreover, the antioxidant and antimicrobial potential of LCEO were also examined. LCEO also showed good anti-inflammatory activity. Interestingly, it was found that the L. camara essential oil was active against a set of microbial strains along with promising antioxidant activity. The MTT assay showed that LCEO possessed good anticancer potential against U-266, A-549, HCT-116, SCC-4, MiaPaCa 2, and KBM-5 cancer cell lines. In these cell lines, it was depicted that the LCEO blocked the tumor cell proliferation via NF-κB pathway suppression. The promising and potent bioactivities of LCEO support the candidature of these essential oils as an anticancer agent.

EXTRACTING ESSENTIAL OIL FROM FRAGRANT LEMONGRASS PLANTS BY STEAM-HYDRO DISTILLATION METHOD USING MICROWAVE AS A HEATER

This research studies the process of extracting citronella oil by the steam-hydro distillation method with microwaves (microwave). In addition, study the effect of temperature (105 ͦ C, 110 ͦ C, 115 ͦ C) and the size of the material enumeration (0.5 cm; 1 cm; 1.5 cm) on the yield of oil produced. This research was conducted by the steam-hydro distillation method. In this method a solvent is added in the form of water to dissolve the oil in the fragrant lemongrass stems and leaves. The resulting steam is condensed and then distillate in the form of a mixture of oil and water is taken after 120 minutes and separated using a separating funnel. From the results of the study, it was found that the% yield of high citronella oil in the variable size of the enumeration material was 0.5 cm at a temperature of 115 with a yield of 1.92%. The content of Citronella obtained in the oil of this research is 59.28%. The density of lemongrass oil is 0.875. The refractive index value is obtained in the range of 1.46735- 1.46925.Keywords : Essential Oil, Fragrant, Steam-hydro Distilation, Microwave

ANTIRADICAL ACTIVITY OF EXTRACTIVES FROM THE ACHILLEA MILLEFOLIUM L. OF THE SIBERIAN REGION

In model reactions with a free stable 2,2-diphenyl-1-picrylhydrazyl radical, the antiradical properties of extractives of common yarrow (Achillea millefolium L.) growing in the Krasnoyarsk Territory were studied: water-alcohol extracts with an alcohol content of 20, 40 and 70% and essential oil. Whole essential oil is obtained by exhaustive hydro-steam distillation for 11 hours. In addition, separate oil fractions were obtained: the first after 20 minutes from the start of distillation, the second after the next 50 minutes, the third after the next 180 minutes, and the fourth after the next 360 minutes.
 The results of the DPPH test showed that ARA is minimal for alcohol-soluble substances and increases for aqueous-alcoholic extracts from 20.3% in the case of a 20% extract to 21.8% for a 70% aqueous-alcoholic extract. ARA of the obtained samples of essential oil surpasses the ARA values of aqueous, alcoholic and aqueous-alcoholic extracts. It was found that the APA value for 1 fraction of oil is 29.7% and increases with the transition to subsequent fractions to 54.3%. Whole Yarrow essential oil has an ARA value of 52.8%.
 According to the ARA value, the extractives of yarrow can be arranged in the following row: whole essential oils> 70% aqueous-alcoholic extract> 40% extract> 20% extract> aqueous extract> 96% alcoholic extract.

Antibacterial activity assay of essential oils from limau kuit peel against Staphylococcus aureus

This research aims to determine the antibacterial activity of essential oils from Limau Kuit (a local variety of limes of South Kalimantan) peel against Staphylococcus aureus ATCC25923, the minimum inhibitory concentration, and to identify compounds of essential oils contained. The essential oil has been isolated by hydro steam distillation and then was analyzed by using GC-MS to identify major compounds of the essential oils which were supposed as antibacterial agents. The result of this research showed the oils had antibacterial activity against Staphylococcus aureus ATCC25923 at concentrations 100%, 75%, 50%, and 25% with minimum inhibitory concentration 25% wet and dry sample. There was no significant difference in MIC between the two samples. At low concentrations, essential oils from wet samples had better inhibition power than dry samples up to a concentration of 75%. But at a concentration of 100%, their inhibitory power tended to decrease. Based on GC-MS data were demonstrated of 15 compounds in the wet sample and 16 compounds in the dry sample. Five major compounds of essential oil from Limau Kuit peel were limonene, γ-terpinene, β-pinene, α-pinene, and sabinene. Meanwhile, it was known that compounds limonene, α-pinene, γ-terpinene, β-pinene, α-terpineol, sabinene, and terpinen-4-ol had antibacterial activity.