scholarly journals Comparison of the Sub-Critical Fluid Extraction of the Essential Oil of Turmeric (Curcuma longa L.) with That of Hydrodistillation

Eng ◽  
2021 ◽  
Vol 2 (4) ◽  
pp. 608-619
Author(s):  
David Mc Gaw ◽  
Rosemarie Skeene
Keyword(s):  
Essential Oil ◽  
Curcuma Longa ◽  
Dry Weight ◽  
Weight Basis ◽  
Operating Conditions ◽  
Raw Material ◽  
Fluid Extraction ◽  
Total Extract ◽  
Pharmaceutical Properties ◽  
The Tropics

Turmeric (Curcuma longa L.) is a spice plant grown in the tropics that contains both an essential oil and an oleoresin. The essential oil is important as a flavouring and has pharmaceutical properties, while the oleoresin is bright yellow in colour and has medicinal properties. The essential oil has traditionally been extracted by hydrodistillation/steam distillation with the total extract being extracted by solvent extraction and more recently by supercritical fluid extraction (SFE). The objective of the work described in this paper was to investigate the possibility of extracting the essential oil using sub-critical fluid extraction and to compare it with hydrodistillation. The experiments using hydrodistillation showed that unpeeled fresh turmeric was the preferred raw material, giving an oil yield of ≈6% dry weight basis, which is similar to that reported in the literature. The experimental programme on the extraction of the oil from dried unpeeled turmeric was carried out over a temperature range from 25 to 30 °C and pressures from 65 to 71 bar. Yields were generally higher than hydrodistillation (up to ≈9% dry weight basis) as were the compositions of the extracted oils. The preferred operating conditions were determined to be 25 °C temperature and 65 bar pressure. Curcumin, the major component of the oleoresin, was not found in the oil, thereby demonstrating that the sub-critical extract is a pure essential oil. It is suggested that consideration be given to evaluating an SFE process whereby the essential oil is initially fully extracted under sub-critical fluid extraction conditions, after which the oleoresin is extracted separately by raising the pressure to ≈250 bar.

scholarly journals Morphological and Chemical Traits as Quality Determinants of Common Thyme (Thymus vulgaris L.), on the Example of ‘Standard Winter’ Cultivar

Agronomy ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 909 ◽  
Author(s):  
Olga Kosakowska ◽  
Katarzyna Bączek ◽  
Jarosław L. Przybył ◽  
Anna Pawełczak ◽  
Katarzyna Rolewska ◽  
...  
Keyword(s):  
Essential Oil ◽  
Rosmarinic Acid ◽  
Raw Materials ◽  
Glandular Trichomes ◽  
Intraspecific Variability ◽  
Total Content ◽  
Dry Weight ◽  
Raw Material ◽  
Thymus Vulgaris ◽  
Chemical Characters

Common thyme is regarded as one of the most important culinary plants. The purpose of the work was to determine the intraspecific variability of common thyme with respect to morphological and chemical characters including the content and composition of essential oil and phenolic compounds in the herb. The objects of the study were 12 clones, vegetatively multiplied from randomly selected individual plants of cultivar ‘Standard Winter’. The morphological observations and harvest of raw materials were carried out in the first year plants’ vegetation. The highest differences between clones were on fresh and dry weight of herb (CV = 0.38 and 0.36, respectively), width of leaves (CV = 0.21), and density of glandular trichomes on the abaxial surface of leaves (CV = 0.29). Examined clones were also differentiated as to the chemical features. Essential oil content (performed by hydrodestillation) and composition (by GC-MS and GC-FID) were determined and they ranged from 2.10 to 4.38 g × 100 g−1 DW. Here, thymol, γ-terpinen, and p-cymen were the dominant compounds. Clone no. 4 was distinctive as to the highest content of essential oil followed by the highest share of thymol (54.59%). The total content of phenolic acids and flavonoids (determined according to PPh 6th) also differed among clones (CV = 0.38 and 0.36, respectively). Using a validated HPLC-DAD method, the following compounds were identified: caffeic, rosmarinic, p-coumaric acids, luteolin 7-O-glucoside, naryngenin, and (−)-epicatechin. Here, rosmarinic acid followed by luteolin 7-O-glucoside were present in the highest amounts (611.47–2675.59 and 46.77–325.11 mg × 100 g−1 DW, respectively). The highest differences between clones were the contents of p-coumaric acid (CV = 0.59), luteolin 7-O-glucoside (CV = 0.50) and rosmarinic acid (CV = 0.40). Such a high range of variability can provide problems with raw material standardization. Nevertheless, it opens possibilities for breeders, whereas individual plants/clones may become valuable components for breeding.

scholarly journals Effects of Drought Stress on Biomass, Essential Oil Content, Nutritional Parameters, and Costs of Production in Six Lamiaceae Species

Water ◽  
2019 ◽  
Vol 11 (3) ◽  
pp. 573 ◽  
Author(s):  
Pedro García-Caparrós ◽  
María Romero ◽  
Alfonso Llanderal ◽  
Pedro Cermeño ◽  
María Lao ◽  
...  
Keyword(s):  
Drought Stress ◽  
Essential Oil ◽  
Water Deficit ◽  
Oil Content ◽  
Dry Weight ◽  
Experimental Period ◽  
Raw Material ◽  
Mentha Piperita ◽  
Effects Of Drought ◽  
Lavandula Latifolia

Lamiaceae is one of the largest families of aromatic plants and it is characterized by the presence of external glandular structures which produce essential oils highly valued in cosmetics and medicine. Plants of Lavandula latifolia, Mentha piperita, Salvia sclarea, Salvia lavandulifolia, Thymus capitatus, and Thymus mastichina were grown for one year. In order to evaluate the effects of drought stress, plants were subjected to two water treatments (100% ETo and 70% ETo, including the rainfall during the experimental period). At the end of the experiment, the biomass, the essential oil content, and leaf nutrients concentration were assessed for each water treatment and species studied. At the end of the experiment, L. latifolia, M. piperita and T. capitatus plants showed a significant fresh weight reduction under drought stress conditions whereas the other species studied remained unchanged. With respect to dry weight, only L. latifolia plants showed a reduction under water deficit conditions. As far as essential oil content was concerned, L. latifolia and S. sclarea plants had a reduction under water deficit conditions. Leaf nutrient concentration showed different trends between species considering the nutrient assessed. The economic viability of the growth of this species will be dependent on the benefits achieved which are related to yield production obtained and the price accorded for both raw material and the essential oil extracted.

scholarly journals Essential Oil Composition of Thyme (Thymus zygioides Griseb. var. lycaonicus (Celak.) Ronniger) Wild Growing in Turkey

2020 ◽  
Vol 8 (1) ◽  
pp. 61
Author(s):  
Erman Duman ◽  
Mehmet Musa Özcan ◽  
Zrira Saadiab ◽  
Mustafa Mete Özcan
Keyword(s):  
Essential Oil ◽  
Dry Weight ◽  
Essential Oil Composition ◽  
Weight Basis ◽  
Geranyl Acetate ◽  
Oil Composition ◽  
Aerial Parts ◽  
Linalool Oxide ◽  
Main Components ◽  
Essential Oil Yield

The chemical composition of essential oil, which is isolated by hydrodistillation of aerial parts of Thymus zygioides growing wild in Turkey, have been determined by GC and GC/MS. Essential oil yield on a dry weight basis of aerial parts from T. zygioides was 0.45%. A total of twenty two constituents were identified by GC-MS analyses, the main components representing 92.3% the oil was identified as limonene (24.11%), cis-linalool oxide (22.91%), eucalyptol (8.65%). 3-octonol (7.04%), nerol (4.47%) geranyl acetate (3.19%), carvacrol (2.74%), linalyl propanoate (2.95%) and sabinene (2.23%). The essential oil of T. zygioides was characterized by its high content of limonene (24.11%).

scholarly journals The influence of NaCl-induced stress on the growth and volatile profile of Curcuma longa L. leaves

2015 ◽  
Vol 13 (1) ◽  
pp. 59-66
Author(s):  
Shweta Singh ◽  
Mahesh Pal ◽  
Anil Kumar ◽  
S.K. Sharma ◽  
Shri Tewari
Keyword(s):  
Essential Oil ◽  
Curcuma Longa ◽  
Dry Weight ◽  
Oil Yield ◽  
Leaf Biomass ◽  
Volatile Profile ◽  
Volatile Constituents ◽  
Induced Stress ◽  
Total Oil ◽  
Essential Oil Yield

Herein, for the first time, the influence of salt-induced stress on the vegetative growth and the volatile profile of Curcuma longa L. leaves was investigated. C. longa was grown in a quarter-strength Hoagland?s solution to which NaCl was added to give four final concentrations: 0 (control), 25, 50 or 75 mM NaCl. In the case of the plants grown in the 25 mM NaCl medium, leaf biomass production was the same as in the control experiment, but it decreased significantly at higher salinities (50 mM and 75 mM NaCl). The volatile constituents of the leaves were isolated by hydrodistillation and analyzed by GC and GC/MS. The essential-oil yield (calculated on the basis of dry weight) was 2.0% for the control plants, and increased at low-to-medium NaCl concentrations (2.5% and 2.8% for the 25 and 50 mM NaCl media, respectively). Contrary to that, the essential-oil yield decreased (1.6%) in the case of plants grown in the 75 mM NaCl medium. The major volatile constituents of C. longa leaves were identified as: ?-phellandrene (38.3-42.4%; more than one third of the total oil), terpinene-4-ol (5.6-10.5%), geraniol (5.6-7.9%), p-cymene (5.2-9.6%), ?-thujene (4.5-7.3%), ?-sesquiphellandrene (4.8-6.8%), ?-myrcene (2.6-3.8%) and ?-bisabolol (1.5-2.7%).

Essential Oil from Herb and Rhizome of Peucedanum ostruthium (L. Koch.) ex DC

2001 ◽  
Vol 56 (11-12) ◽  
pp. 930-932 ◽  
Author(s):  
Wojciech Cisowski ◽  
Urszula Sawicka ◽  
Marek Mardarowiczb ◽  
Monika Asztemborskac ◽  
Maria Łuczkiewiczd
Keyword(s):  
Gas Chromatography ◽  
Essential Oil ◽  
Essential Oils ◽  
Dry Weight ◽  
Weight Basis ◽  
Qualitative And Quantitative ◽  
Ms Detection ◽  
Quantitative Analyses ◽  
Flame Ionisation

Abstract Essential oil from herb and rhizome of Peucedanum ostruthium (L.Koch.) ex DC un­ derwent qualitative and quantitative analyses. The content of the oil obtained by hydrodistil­lation was 0.95% in the herb and 1.25% in the rhizome (per dry weight basis). Gas chroma­ tography (GC) with MS detection and flame ionisation detection showed that the oil from the rhizome contains 39 compounds, of which 29 were identified. Gas chromatography with flame ionisation detection in chiral columns against standard compounds showed the pres­ence of enantiomers of some of the components of the oil. Compounds present in largest quantities are: sabinene (35.2%) of which (+) sabinene accounts for (96.54%) and 4-terpineol (26.6%) of which (+) 4-terpineol accounts for (65.8%). 44 com ponents were found in the herb essential oil, of which 39 compounds were identified. Compounds present in largest quantities were β-caryophyllene (16.1%) and a-hum ulene (15.8%). The content of sabinene in the herb oil was 4.7%. The following compounds were present in the herb oil only as enantiomers: (+) sabinene (4.7%), (-) limonene (4.4%), (-) β-pinene (0.4%). A coumarin (osthole) was detected in both essential oils (5.5% in herb oil and 5.1% in rhizome oil).

scholarly journals Chemical Analysis of the Essential Oil from Tagetes minuta

2000 ◽  
Vol 5 (1) ◽  
pp. 25
Author(s):  
A.J. Khan ◽  
A.R. Chowdhury
Keyword(s):  
Essential Oil ◽  
Dry Weight ◽  
Weight Basis ◽  
Gas Chromatograph ◽  
Linalyl Acetate ◽  
North West ◽  
The North ◽  
Tagetes Minuta ◽  
Gas Chromatograph Mass Spectrometry ◽  
Phenyl Acetaldehyde

Tagetes minuta Linn. is a highly aromatic herb that grows wild on the North-West Himalayas between the altitudes of 1,250 and 2,500 m. The aerial part of the plant, on hydro distillation, yielded 1.2% of yellow-brown colored essential oil, on a dry weight basis, having a strong aromatic odor. Gas chromatograph-mass spectrometry examination of the oil showed that it contains tagetone and trans-caryo hyllene as major constituents. The other constituents identified were B-bisabolene, carvotanacetone, carvacrol, citral, B-cubebene, p-cymene, dihydrotagetone, iso-eugenol, B-inone, linalyl acetate, linalool, isolimonene, methyl-n-heptyl ketone, B-myrcene, menthol, nerolidol, 2-nonanone, B-ocimene, ocimenone, 1-penten-3-ol, phenyl acetaldehyde, a-pinene, spathulenol, a-terpineol, and Y-terpineol.

ERRORS ASSOCIATED WITH HERBAGE DISSECTION ANALYSES 2. Problems of species identification

1976 ◽  
pp. 213-225
Author(s):  
I.M. Ritchie ◽  
C.C. Boswell ◽  
A.M. Badland
Keyword(s):  
New Zealand ◽  
Dry Weight ◽  
Analytical Tool ◽  
Species Level ◽  
Weight Basis ◽  
Plant Identification ◽  
Leaf Fragment ◽  
Research Division ◽  
Or Groups ◽  
Botanical Analysis

HERBACE DISSECTION is the process in which samples of herbage cut from trials are separated by hand into component species. Heavy reliance is placed on herbage dissection as an analytical tool ,in New Zealand, and in the four botanical analysis laboratories in the Research Division of the Ministry of Agriculture and Fisheries about 20 000 samples are analysed each year. In the laboratory a representative subsample is taken by a rigorous quartering procedure until approximately 400 pieces of herbage remain. Each leaf fragment is then identified to species level or groups of these as appropriate. The fractions are then dried and the composition calculated on a percentage dry weight basis. The accuracy of the analyses of these laboratories has been monitored by a system of interchanging herbage dissection samples between them. From this, the need to separate subsampling errors from problems of plant identification was, appreciated and some of this work is described here.

Polycyclic Aromatic Hydrocarbons (PAHs) in Sediments of the Brisbane River (Australia) – Preliminary Results

1989 ◽  
Vol 21 (2) ◽  
pp. 161-165 ◽  
Author(s):  
S. I. Kayal ◽  
D. W. Connell
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
River Estuary ◽  
Dry Weight ◽  
Weight Basis ◽  
Sediment Samples ◽  
Preliminary Results ◽  
Treated Sewage ◽  
Polycyclic Aromatic ◽  
Petroleum Refineries

Results of the analysis of twenty-three composite sediment samples revealed that PAHs are widely distributed in the Brisbane River estuary. Mean concentrations for individual compounds, on a dry weight basis, ranged from 0.03 µg/g for dibenz [ah] anthracene to 2.34 µg/g for fluoranthene. Observed PAH assemblages were rich in compounds having pyrolytic origins. However, the presence of petroleum derived compounds was indicative of the importance of petroleum as a PAH source in the estuary. Petroleum refineries, a coal loading terminal and a major treated sewage outfall located at the mouth were not indicated as major contributing sources of PAH pollution in the estuary.

Mineral nutrition, dinitrogen fixation, and growth of Alnuscrispa and Alnusglutinosa

1985 ◽  
Vol 15 (5) ◽  
pp. 855-861 ◽  
Author(s):  
G. Prégent ◽  
C. Camiré
Keyword(s):  
Mineral Nutrition ◽  
Dry Weight ◽  
Optimal Growth ◽  
Maximum Growth ◽  
Dinitrogen Fixation ◽  
Weight Basis ◽  
Critical Levels ◽  
N Status

Invitro cultures of Alnuscrispa (Ait.) Pursh and Alnusglutinosa (L.) Gaertn. were used to estimate critical foliage levels of selected nutrients for optimal growth and dinitrogen (N2) fixation. For A. crispa to obtain 90% of maximum growth and N2 fixation, foliar levels of 0.12% P, 0.13% Mg, <0.31% K, and <0.04% Ca on a dry weight basis were needed. For A. glutinosa, the critical levels were 0.138% P, 0.10% Mg, 0.29% Ca, and ~0.20% K. From all the deficiencies observed, P had the more pronounced effects on N status of both species.

Sign in / Sign up

Export Citation Format

Share Document