bluuebunny/crossref_metadata_2025_split huggingface dataset:
Constituents of the volatile oil from leaves of Ocimum canum sims
Authors: Ekundayo O. , Laakso I. , Hiltunen R. 
Published: November 2006

AbstractComprehensive GC‐MS analyses of the volatile oil from leaves of Ocimum canum Sims revealed the occurrence of eugenoi as the major constituent, in addition to 28 other compounds. Since methyl cinnamate, camphor, citral and linalol chemotypes of O. canum have previously been found, a new type is now being reported.
Isolation of the colouring matter from dried turmeric (Curcuma longa L.) with ethyl acetate
Authors: Verghese J. , Joy M. T. 
Published: November 2006

AbstractCurcuma longa L. (syn C. domestica Val.) rhizomes were extracted with ethyl acetate; the miscella was partially desolventized and the curcuminoids precipitated at ca 25° C. The work‐up afforded pigments in 2.77% yield with colour value 14300 equivalent to 90.42% curcumin and demonstrated the use of ethyl acetate, which has a benign toxicological profile, for the recovery of the turmeric colourant.
The volatile fraction ofOtacanthus coeruleusLindl. Containing the new copaene derivative β‐copaen‐4α‐ol
Authors: De Pooter H. L. , De Buyck L. F. , Schamp N. M. , Billiet F. , De Bruyn André 
Published: November 2006

AbstractThe volatile fraction ofOtacanthus coeruleusLindl. was investigated by GC‐MS of the essential oil and of the headspace. About 50% of the oil consists of oxygen‐containing substances. Out of more than 100 volatiles, 34 were identified by their Kováts indices and mass spectral data. The new copaene derivative β‐copaen‐4α‐ol (II) was isolated. The plant and its oil have an agreeable, slightly floral, resinous smell. No character impact compound could be recognized. Major components of the oil were:trans‐pinocarveol (13%), pinocarvone (12%), myrtenal (7%), myrtenol (ca 5%), α‐copaene (ca3%), α‐humulene (ca6%) and β‐copaen‐4α‐ol (ca7%).
A simple method for detection of glycosidic bound monoterpenes and other volatile compounds occurring in fresh plant material
Authors: Van Dries J. M. A. Den , Baerheim Svendsen A. 
Published: November 2006

AbstractA simple method for detection of glycosidic bound monoterpenes and other volatiles occurring in fresh plant material was developed. The fresh plant material was ‘stabilized’ in boiling water according to Bourquelot, the volatile oil components removed by hydrodistillation and extraction, the remaining aqueous extract treated with β‐glucosidase, and the monoterpenes and other volatiles, formed during the enzymatic hydrolysis, isolated as a group and subsequently analysed by gas chromatography.
Volatile constituents from parsley cultures
Authors: Gbolade A. A. , Lockwood G. B. 
Published: November 2006

AbstractCallus cultures of Petroselinum crispum (Mill) Nyman cult. ‘Paramount’, ‘Champion moss‐curled’ and ‘Plain‐leaved’ under standard culture conditions showed reasonable growth with some accompanying chlorophyll production and morphological root differentiation which disappeared over seven generations. p‐Mentha‐1,3,8‐triene, β‐elemene and myristicin were obtained as the chief volatile constituents of the callus and supension cultures of cultivar ‘Paramount’. Minor quantities of monoterpenes were also detected, although none of these constituents was released into the liquid medium.
Composition of the essential oil of Blumea lacera DC. (Asteraceae) leaves from Nigeria
Authors: Laakso I. , Seppänen‐Laakso T. , Hiltunen R. , Ekundayo O. 
Published: November 2006

AbstractThe essential oil of Blumea lacera DC. leaves was analysed by GLC and GC‐MS. Thymoquinol dimethyl ether was found to be the main constituent. Other major compounds included β‐caryophyllene, α‐humulene and E‐β‐farnesene. Thymoquinol dimethyl ether and precocene I were identified for the first time in this oil. They may give valuable information for chemotaxonomic studies on Blumea species and their relationships in the family Asteraceae.
Enhancement of the production of fungal volatiles employing different adsorbents
Authors: Kühne B. , Sprecher E. 
Published: November 2006

AbstractThe effect of different adsorbents on the production of volatiles by the ascomycete Hypomyces odoratus G. Arnold was investigated. The adsorbents used enhanced this production when they were applied to the culture medium. The highest increase was found for Amberlite XAD‐2 (30 times) and for the weak‐acid cation exchanger IV (27 times). The composition of the mixture of volatiles was hardly affected. By applying Amberlite XAD‐2 into the headspace of the cultures the total amount of volatiles was also increased. In this case GC analysis revealed a marked increase in the amount of the more volatile components.
The essential oil from the flowers of Campsis grandiflora (Thumb.) K. Schum. from China
Authors: Ueyama Yoshitaka , Hashimoto Seiji , Furukawa Kiyoshi , Nii Hiromichi 
Published: November 2006

AbstractThe essential oil of the flowers from Campsis grandiflora (Thumb.) K. Schum. (Bignoniaceae) growing in eastern China has been investigated by capillary GC and GC‐MS. The oil contained 154 volatile components of which ca 95% were identified. The main constituents were furfural, 5‐methylfurfural, furfuryl alcohol and 2‐acetylfuran, accounting for 44.7% of the oil.
Application of headspace gas chromatography in essential oil analysis. Part IX. Selective loss of terpene compounds during hydrodistillation
Authors: Vuorela H. , Pohjola J. , Krause C. , Hiltunen R. 
Published: November 2006

AbstractComparing the composition of essential oils obtained by headspace gas chromatography (HSGC) and conventional hydrodistillation from needles of Pinus sylvestris L., a selective loss of low boiling terpene hydrocarbons can be observed by the latter technique. HSGC is therefore more suitable for quantification of highly volatile compounds than the hydrodistillation technique.
Variation and inheritance of terpenes in scots pine
Authors: Pohjola J. , Hiltunen R. , Schantz M. V. 
Published: November 2006

AbstractQualitative and quantitative variation of some terpene compounds in pine needles was determined using static headspace gas chromatography (HSGC) in order to obtain information about the inheritance and gene control of Scots pine (Pinus sylvestris L.) terpenes. Needles of more than 600 trees or seedlings belonging to a control‐pollinated and its open‐pollinated progeny were analysed. The terpenes were identified by headspace gas chromatographic‐mass spectrometric techniques. The terpene patterns obtained by HSGC for the needle volatile fraction and by GC for the hydrodistilled needle volatile oil did not differ much. The hybrids obtained in the control‐pollinated crosses were either the high or low 3‐carene chemotype. Their open‐pollinated seedlings were also of these two chemotypes. The quantitative variation in the terpene concentrations permitted construction of a frequency distribution diagram for each terpene compound. The evidence from the bimodal distribution indicates that the relative amounts of monoterpenes p‐pinene, sabinene, 3‐carene, myrcene and terpinolene in Pinus sylvestris L. are simply inherited, i.e. controlled by a single gene with major gene effects. The rest of the monoterpenes and all the sesquiterpenes were normally distributed and their inheritance thus seems to be of a polygenie nature.
Study of different parameters influencing the composition of hydrodistilled sweet fennel oil
Authors: Katsiotis Stavros T. 
Published: November 2006

AbstractDifferent parameters applied in the hydrodistillation of an essential oil not only influence the percentage yield of the oil but also the concentration of each of its constituents. In the present study the simultaneous influence of three parameters, i.e. degree of comminution, distillation period and distillation rate, on the composition of sweet fennel oil was investigated, using the Latin square method for the experimental programme. The percentage composition of the oil samples was determined by GLC. The results showed for each oil constituent the optimum combination of the parameters studied. The degree of comminution influenced the oil composition to a much larger extent than the other two parameters.
Comparison of the chemical composition of carrot seed essential oil extracted by different solvents
Authors: Cu Jian‐Qin , Perineau F. , Deltnas M. , Gaset A. 
Published: November 2006

AbstractCarrot seed was extracted with the solvents 1,1,2‐trichloro‐1,2,2‐trifluoroethane (TTE), methylfuran (sylvan), ethanol and dichloromethane. After evaporation of the solvent, the resinoids obtained were steam distilled to separate the volatile components. The chemical composition of the essential oil samples obtained using the different solvents, as well as that obtained by hydrodistillation, were compared.Quantitatively, the highest yields of concrete and essential oil were obtained using sylvan (4.79% and 0.47%) and ethanol (3.30% and 0.87%). These yields of essential oil are greater than those obtained by hydrodistillation (0.40%).Some of principal components varied in amount with the extraction solvent used. For example, GC‐MS analysis showed that the contents of α‐pinene were 2.47% (sylvan), 0.25% (TTE), 0.30% (EtOH), trace (CH2Cl2) and 13.31% (hydrodistillation). Those of geranyl acetate were (the same order as above) 23.58%, 3.48%, 12.08%, 10.11%, and 10.39% and those of carotol were 13.97%, 40.91, 39.06%, 31.75%, and 18.29% respectively.
Volatile components of apple flowers
Authors: Omata Akihiko , Yomogida Katsuyuki , Nakamura Shoji , Hashimoto Seiji , Koba Shigeki , Furukawa Kiyoshi , Noro Shoji 
Published: November 2006

AbstractExtracts from ten species of apple flowers harvested at Aomori Experiment Station have been investigated by GC. No significant differences in chemical composition were observed in the volatile components of the ten species.The extract of ‘Redgold’ flowers, which is one of apple cultivars, was fractionated by column chromatography and analysed with GC and GC–MS. Seventy‐seven compounds were identified and cis‐hex‐3‐en‐1‐ol, benzyl alcohol, 2‐phenylethyl alcohol, cinnamyl alcohol, nonanal, octanol and indole were found to make a major contribution to the odour of apple flowers.
Composition of Vietnamese cajuput essential oil
Authors: Motl O. , Hodačová J. , Ubik K. 
Published: November 2006

AbstractA detailed analysis of cajuput essential oil—an industrial product from Vietnam—has been carried out by combining column chromatography, gas chromatography, GC–MS, IR and NMR spectroscopy. It contains 61 components of which 48 have been identified. The taxonomy of the material used was discussed and the antibacterial properties of the essential oil are mentioned.
Essential oils from schinus molle L. berries and leaves
Authors: Maffei Massimo , Chialva Franco 
Published: November 2006

AbstractEssential oils from Schinus molle L. berries and leaves were analysed by means of GC–MS. Berry oil contained mainly α‐ and β‐phellandrene (55.4% and 15.4% respectively) along with limonene (14.3%). Leaf oil which also contained α‐ and β‐phellandrene and limonene (30.2%, 9.6% and 9.3% respectively), was characterizied by the presence of sesquiterpenes such as elemol (13.3%), germacrene‐D (5.2%), γ‐eudesmol (3.2%) and T‐cadinol (4.7%), which were present only in traces in the oil from the berries.
Cultivarietal comparison of patchouli plants in relation to essential oil production and quality
Authors: Sugimura Yukio , Ichikawa Yoshiaki , Otsuji Kazuya , Fujita Manabu , Toi Nao , Kamata Nobuo , Rosario Romeo M. Del , Luingas Godilla R. , Taga‐an Gervacio L. 
Published: November 2006

AbstractPatchouli, Pogostemon cablin Benth., is an important source of essential oil. On the basis of botanical observations and gas‐chromatographic patterns of oils obtained, the major characteristics of three cultivars were compared. From cultivar I, an oil close to that commercially available was produced with a yield of 1.6% (wt/wt). From cultivar II, a lower yield of an oil having an additional component was obtained. From cultivar III, a relatively high amount of oil was recovered from each plant owing to the bigger canopy it forms. The quality of the oil, however, was judged to be markedly different from that of others. Each cultivar could be identified by its characteristic leaf morphology and trichome density.
Composition of Achillea asiatica Serg. Essential oil
Authors: Motl O. , Ochir G. , Kubeczka K.‐H. 
Published: November 2006

AbstractThe essential oil obtained from Achillea asiatica Serg. was analysed by means of capillary gas chromatography and various physico‐chemical methods; 40 components have been identified. The composition of Achillea millefolium L. essential oil is very similar.
6‐Hydroxycarvotanacetone and other constituents of the essential oil of Laggera alata (D. Don) Sch. Bip. ex Oliv.
Authors: Onayade O. A. , Scheffer J. J. C. , Schripsema J. , Van Gen A. Der 
Published: November 2006

AbstractThe essential oil from the herb of Laggera alata (D. Don) Sch. Bip. ex Oliv. was analysed by means of GLC, LSC, GC–MS and 1H‐NMR spectrometry. Most of its components were identified, amongst which were phenolic ethers (about 45%), monoterpenes (22%) and sesquiterpenes (12%). The main components of the oil were 2,5‐dimethoxy‐p‐cymene ( = thymoquinol dimethyl ether; 44%), and sabinene (16%). Another component (3%) was found to be 2‐methyl‐5‐(1‐methylethyl)‐6‐hydroxycyclohex‐2‐en‐1‐one ( = 6‐hydroxycarvotanacetone); it has until now not been reported to occur in nature. Another rare compound detected was 4‐hydroxycarvotanacetone‐7‐O‐angelate (2%). An olfactographic analysis of the oil was also carried out. Chromatographic analyses of the essential oil of L. alata have not been reported previously.
Enantiomeric distribution of α‐pinene, β‐pinene and limonene in essential oils and extracts. Part 1. Rutaceae and gramineae
Authors: Mosandl A. , Hener U. , Kreis P. , Schmarr H.‐G. 
Published: November 2006

AbstractMultidimensional gas chromatography (MDGC) employing heart‐cutting from a Carbowax 20M coated precolumn onto a heptakis (2, 3, 6‐tri‐O‐methyl)‐β‐cyclodextrin coated chiral main column allows the direct stereodifferentiation of α‐pinene, β‐pinene and limonene from complex matrices. Commercially available essential oils of Rutaceae and Gramineae, as well as self‐prepared peel extracts of Rutaceae were directly analysed without any further clean‐up. The enantiomeric distribution of the monoterpenes from the essential oils and the peel extracts was investigated.
Enantiomeric distribution of α‐pinene, β‐pinene and limonene in essential oils and extracts. Part 2. Oils, perfumes and cosmetics
Authors: Hener U. , Kreis P. , Mosandl A. 
Published: November 2006

AbstractThe enantiomers of α‐pinene, β‐pinene and limonene were directly determined in complex matrices by multidimensional gas chromatography using a non‐chiral‐chiral column combination.Essential oils, used for the preparation of perfumes and cosmetics, and commercially available perfumery products were analysed without sample clean‐up. The enantiomeric distribution of the monoterpenes investigated allows a quality control of perfumes, a validation of essential oils as well as a differentiation of their natural or artificial origin.
F1 and F2 hybrids from Mentha x verticillata clone 7303 × Mentha spicata L. A chemogenetic study
Authors: Maffei Massimo 
Published: November 2006

AbstractMentha × verticillata clone 7303 (38% menthofuran, 20% menthol, 9% limonene) was crossed to Mentha spicata L. (40–50% carvone). This cross produced a PO–F1 population particularly rich in piperitenone oxide (62%). Backcrosses of the PO–F1 hybrids to the M. spicata parent produced a ratio of 1:3 carvone‐odoured to non carvone‐odoured individuals; 1:3 piperitenone oxide‐odoured to non piperitenone oxide‐odoured individuals; 1:7 ratio of sesquiterpene‐odoured to non sesquiterpene‐odoured individuals and a 1:15 ratio of pulegone‐odoured to non pulegone‐odoured individuals, suggesting for the PO–F1 hybrid the genotype ‘ii, lmlm, cc, cc, ArAr, PrPr, PsPs, Psps, RrRr, rsrs, oo, oo, EE’. The sesquiterpene individuals almost completely lack monoterpenes.
The essential oil from the flowers of Rosa rugosa Thunb. var. plena Regel
Authors: Ueyama Yoshitaka , Hashimoto Seiji , Nii Hiromichi , Furukawa Kiyoshi 
Published: November 2006

AbstractThe chemical composition of the volatile flower oil of Rosa rugosa Thunb. var. plena Regal growing in central China was examined by a combination of chemical separation, column chromatography, GC and GC–MS techniques.A total of 108 compounds were identified. This rose essential oil was high in citronellol (60.0%), geraniol (8.6%), nerol (2.8%), citronellyl acetate (2.7%), E, E‐farnesol (2.4%) and tridecan‐2‐one (2.3%), accounting for 78.8% of oil.
On‐line HPLC‐HRGC coupling in the study of citrus oils: Sesquiterpene and paraffin hydrocarbons
Authors: Lanuzza Francesco , Micali Giuseppe , Currò Paolina , Calabrò Giuseppe 
Published: November 2006

AbstractOn‐line HPLC‐HRGC coupling offers new analytical possibilities in the separation of complex mixtures. This technique has been used for the separation and identification of sesquiterpene and paraffin hydrocarbons in cold pressed citrus oils.The sesquiterpene and paraffin hydrocarbons fractions of these oils are pre‐separated in two different LC chromatographic runs, using a Hypersil 5μm (10 cm × 0.21cm i.d.) microbore column and as mobile phase, 0.2 ml/min flow‐rate, n‐pentane to isolate the sesquiterpenes, and n‐hexane to isolate the paraffins. The fractions thus separated are directly transferred on to the OV1 capillary column (22 m × 0.32 mm i.d., 0.4 μm film thickness), which separates the individual components.The analytical sample was obtained by a simple dilution of the oils in hexane, without any further handling; analysis time is short.The HPLC‐HRGC coupling allows a high degree of certainty in the chromatographic identification of the various components and therefore more certain information on the composition of citrus oils.The results obtained by analysing cold pressed lemon, bergamot, mandarin, sweet and bitter orange oils are reported.
Essential oils and glycosidic bound volatiles from leaves, stems, flowers and roots of Hyssopus officinalis L. (lamiaceae)
Authors: Schulz Gudrun , Stahl‐Biskup Elisabeth 
Published: November 2006

AbstractThe essential oils from different parts of hyssop (Hyssopus officinalis L.) were investigated by means of GC and GC‐MS at three stages of development of the plant. Besides the main components pinocamphone, camphor and β‐pinene, 15 other terpenes were detected, among which were isopinocamphone, α and β‐phellandrene, germacrene D, and some derivatives of myrtenol. The sesquiterpene alcohol hedycaryol was found to be converted to elemol during GC and MS analysis.Compared with the essential oil content (0.03–0.16% of the fresh plant material), the glycosidic bound volatiles were present in lower concentrations (0.01–0.06%). The glycosidic fraction was hydrolysed by means of Pectinol C and β‐glucosidase yielding among others octan‐3‐ol, linalol, cis‐nerolidol, benzyl alcohol, phenylethanol, eugenol and o‐vanillin. The bicyclic terpenes myrtenol and verbenol could only be detected in small amounts as glycosides of the leaves. This fact gives reason for doubt about a direct connection between the glycosidic bound volatiles and the biogenesis of the essential oil components in hyssop.
Quantification of volatile branched‐chain and n‐chain fatty acids in flue‐cured Virginia and blended Turkish tobacco
Authors: Ha J. Kim , Lindsay R. C. 
Published: November 2006

AbstractVolatile free fatty acids in flue‐cured Virginia and blended Turkish tobaccos were quantitatively analysed as butyl esters by a sensitive capillary GC method. A total of 23 volatile free fatty acids were characterized by GC‐MS, and several were observed for the first time in tobacco. A blended Turkish tobacco sample contained many more branched‐chain fatty acids than a flue‐cured Virginia tobacco sample. 4‐Ethyloctanoic acid, earlier reported in flue‐cured Virginia tobacco, was not present in the sample of this tobacco, but it was present in the blended Turkish tobacco sample.
Enantiomeric distribution of α‐pinene, β‐pinene and limonene in essential oils and extracts. part 3. oils for alcoholic beverages and seasonings
Authors: Hener U. , Kreis P. , Mosandl A. 
Published: November 2006

AbstractThe enantiomers of α‐pinene, β‐pinene and limonene were directly determined in essential oils used for the preparation of alcoholic beverages and seasonings. The essential oils were analysed by multidimensional gas chromatography using a non‐chiral‐chiral column combination with modified β‐cyclodextrin as the chiral stationary phase, without a previous sample clean up. Such analyses may allow a differentiation of herb, root and seed oils isolated from the same plant species.
Sulphur‐containing essential oils from the diosmeae
Authors: Campbell William E. , Williamson Bridget K. 
Published: November 2006

AbstractS‐Prenyl thioesters have been identified in the essential oils of a further two Diosmeae species. The oils from Agathosma rosmarinifolia (Bartl.) Williams and Empleurum fragrans Glover have been examined by capillary GC and GC‐MS. Since the previous published work on the composition of the sulphur‐containing oils from Agathosma apiculata G. F. W. Mey, A. clavisepala R. A. Dyer, A. puberula Fourcade and Phyllosma capensis Bolus was incomplete, further studies of these oils have been undertaken.
Essential oil of fijian ageratum conyzoides L.
Authors: Aalbersberg William G. L. , Singh Yogendra 
Published: November 2006

AbstractThe essential oils of fresh flowers and a combination of leaves plus stems of flowering and non‐flowering Ageratum conyzoides L. growing in two different climatic conditions were analysed by gas‐liquid chromatography and mass spectrometry. The composition of the oils of the flowers and the combination of the leaves plus stems were similar except for quantitative variations. The oils are rich in sesquiterpenes and ageratochromene (6,7‐dimethoxy‐2,2‐dimethylchromene) and 7‐methoxy‐2,2‐dimethylchromene.
Composition of the volatile oil of Crithmum maritimum L.
Authors: Ruberto Giuseppe , Biondi Daniela , Piattelli Mario 
Published: November 2006

AbstractGas chromatographic analysis of the essential oil of Crithmum maritimum L. showed the presence of at least 57 compounds representing ca. 95% of the total oil. The main components were limonene (22.3%), γ‐terpinene (22.9%) and thymol methyl ether (25.5%). Compounds were identified through their GC retention times and MS data. The identification of thymol methyl ether was confirmed by NMR spectroscopy.
A comparative study of the essential oils from three Melaleuca species growing in Egypt
Authors: Aboutabl E. A. , Tohamy S. F. El , De Footer H. L. , De Buyck L. F. 
Published: November 2006

AbstractThe composition of hydro‐distilled essential oils of the leaves of three Melaleuca species growing in Egypt, viz., M. quinquenervia (Cav.) S. T. Blake, M. armillaris Sm. and M. bracteata F. Muell was determined by GC‐MS. Methyl eugenol is the main component of M. bracteata (97.7%). 1,8‐Cineole constitutes 57.2% of the oil of M. quinquenervia and 33.7 % of M armillaris. Terpinen‐4‐ol amounts to 24.8 % in M. armillaris. Accordingly, the oils of these plants may be considered of economic importance.
The essential oil of Sphaeranthus suaveolens DC
Authors: De Pooter H. L. , De Buyck L. F. , Schamp N. M. , Harraz F. M. , El‐Shami I. M. 
Published: November 2006

AbstractIn the essential oil of Sphaeranthus suaveolens DC, prepared by hydro‐distillation of the dried leaves, 34 compounds were identified by GC and GC‐MS. The oil is marked by a high content of α‐pinene (10.6%), isopinocamphone (33.5%) and thymohydroquinone dimethylether (1,4‐dimethoxy‐2‐methyl‐5‐(l‐rnethylethyl)‐benzene)(16.1 %).