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The aim of this study deals with characterize the volatile profiles of gluten free flours and bakery products. An appropriate HS-SPME/GC-MS methods for the quantification analyses was performed and corn starch solid as standards was used. 34 different samples were analysed, and 127 compounds distributed in 4 classes (alcohols, aldehydes and ketones, heterocyclic compounds, and terpenes), that make up the aroma of these gluten free, were identified. The developed method is characterized by detection limits of 0.0004 and 0.0047 mg/kg for camphor and pyrazine, respectively, and linearity of quantification standards were between 0.990 and 0.998 for a range of 3-50 mg/kg.
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The genus Verbascum L, belonging to the Scrophulariaceae family, is native to Europe, Africa and Asia. The use of plants of this genus in the popular medicine has been largely reported. In the present study the chemical composition of the essential oil from aerial parts of Verbascum creticum (L.) Cav., a rare plant, never previously investigated, known for its anti-inflammatory properties of the intestinal mucosa and in the treatment of acute and chronic catarrhs, growing in Algeria, Baleares, Calabria, Sardinia, Sicily, Spain and Tunisia, was evaluated by GC-MS. The main components of its essential oil (Vc) were 1-octen-3-ol (23.9%), cis-3-hexen-1-ol (9.4%), phenylethanal (4.6%), and 2-methyl-benzofurane (4.6%). The comparison with all the other studied essential oils of genus Verbascum is discussed. Furthermore, a review of the use of the Verbascum species in the popular medicine has been carried out.
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The genus Cachrys L., included within the Apiaceae family, has a wide geographical distribution. It has a fairly complex nomenclatural history as it is shared with two other genera: Hippomarathrum Link non P.G. Gaertn., B. Mey. & Scherb., and Prangos Lindl. Cachrys pungens Jan ex Guss. is a perennial plant growing primarily in the temperate biome. The native range of this species is S. Italy, Sicily and NW. Africa. In the present study the chemical composition of the essential oil from aerial parts of this plant, never previously investigated, was evaluated by GC-MS. The essential oil (Cp) was characterised by large amounts of monoterpene hydrocarbons (67.51%) being ß-cis-ocimene (13.55%), sabinene (12.57%) and γ-terpinene (10.56%) the main constituents. A comparison with all the other studied essential oils of genus Cachrys is discussed. Furthermore, a review of the use of the Cachrys species in the popular medicine has been carried out.
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In the present study, the chemical composition of the essential oil from aerial parts of a very rare Centaurea species, not previously investigated, Centaurea erycina Raimondo and Bancheva, collected in Sicily, was evaluated by GC-MS. The new species, classified just twenty years ago, belongs to Centaurea cineraria group (sect. Pannophyllum Hayek, Asteraceae) and grows in an extremely limited area in the NW part of Sicily. The oil was shown to be rich of aldehydes (41.4%) and sesquiterpenes (33.4%). The main components of the essential oil were ß-caryophyllene (13.4%), caryophyllene oxide (12.6%), hexanal (11.9%), and trans-2-hexenal (10.0%). Furthermore, a complete literature review on the composition of the essential oils of all the other taxa of Centaurea, belonging to sections Pannophyllum, studied so far, was carried out.
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Matthiola Aiton is a genus belonging to the Brassicaceae family, distributed in Macaronesia, the Mediterranean basin, and the Saharo-Sindian region. Plants of this genus are used against various diseases in the ethno-medicine of several countries and a complete review of their usage has been carried out in this paper. In the present study, the essential oil chemical composition of the aerial parts of the Sicilian accession of Matthiola fruticulosa (L.) Maire, a species growing in South-Western Europe, Northern Africa, and Western Asia, was analysed by GC and GC-MS. No previous paper has been previously published on the essential oil of this species. Main constituents of the oil were sulphur compounds (45.5%) with the two quite rare cis and trans isomers of 5-(methylthio)-4-pentenenitrile as principal metabolites (16.3% and 10.7%, respectively). Principal compound of the oil was the diterpene phytol (16.5%) whereas other terpenoids were less abundant (10.6%).
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The genus Thapsia L., belonging to the Scandiceae tribe of the Apiaceae family, is mainly distributed in the Mediterranean area, North Africa, and the Iberian Peninsula. The use of plants of this genus in popular medicine dates back to the age of ancient Greeks. In the present study the chemical composition of the essential oil from aerial parts of Thapsia garganica subsp. messanensis (Guss.) Brullo & al., an endemic plant of Sicily, never previously investigated, was evaluated by GC-MS. The main components of its essential oil (Tgm) were 1,4-dimethylazulene (17.0%), chamazulene (10.1%), 3-methyl nonane (7.0%), and butyl heptanoate (4.6%). The comparison with all the other studied essential oils of the genus Thapsia is discussed.
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In the present study, the chemical composition of the essential oil from aerial parts of two populations of Paeonia mascula subsp. russoi, collected in Sicily, was evaluated by GC-MS. No previously phytochemical investigation has been reported for this subspecies. The main components of the essential oil of the population with pink flowers were salicylaldehyde (34.31%), nonanal (16.95%) and 2-hexenal (10.17%), whereas essential oil of the population with white flowers, was shown to be rich of myrtanal (14.14%), eugenol (14.02%) and salicylaldehyde (12.21%). Furthermore, a complete literature review, not present in literature, on the composition of the essential oils of all the other taxa of Paeonia, studied so far, was performed. PCA and HCA analyses of the composition of essential oils obtained from the aerial parts were also carried out.
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Ferulago nodosa (L.) Boiss. (Apiaceae) is a species occurring in the Balkan-Tyrrhenian area being present in Crete, Greece, Albania, and probably in Macedonia. From the roots of this accession of species, not previously investigated, four coumarins, grandivittin, aegelinol benzoate, felamidin and aegelinol, and two terpenoids, (2E)-3-methyl-4-[(3-methyl-1-oxo-2-buten-1yl)oxy]-2-butenoic acid and pressafonin-A, were isolated and spectroscopically characterized. The last one was never detected in Ferulago species. The evaluation of the anti-tumor effects of F. nodosa coumarins on colon cancer HCT116 cells showed only a modest effect on reduction of tumor cell viability. For aegelinol, the reduction of colon cancer cell viability already appears with 25 µΜ, while using 50 e 100 µM doses of marmesin the residual viability amounted to 70% and 54%, respectively. This effect resulted more evident at higher doses of compounds (at 200 µM from 80% to 0%). The most effective compounds resulted coumarins lacking ester group.
Assuntos
Apiaceae , Neoplasias do Colo , Cumarínicos/farmacologia , Cumarínicos/química , Extratos Vegetais/farmacologia , Extratos Vegetais/química , Compostos Fitoquímicos/farmacologia , Apiaceae/química , Neoplasias do Colo/tratamento farmacológicoRESUMO
Microbial interactions during the fermentation process influence the sensory characteristics of wines. Alongside alcoholic fermentation, malolactic fermentation also plays a crucial role in determining the aromatic traits of wines. The time (t), rate (m) and volatile organic compounds (VOCs) of malolactic fermentation are linked to the interaction between yeasts and lactic acid bacteria. The study investigated the interactions between Lactiplantibacillus plantarum or Oenococcus oeni with Saccharomyces cerevisiae by using the Technological Affinity Index (TAIndex). The co-inoculation of L. plantarum/S. cerevisiae resulted in a higher TAIndex than the co-inoculation of O. oeni/S. cerevisiae conditions. A low TAIndex led to increased aromaticity of the wines. The time and rate of malolactic fermentation have a strong impact on the synthesis of VOCs with a high olfactory impact. Therefore, knowledge of the TAIndex could play a decisive role in improving winemaking planning to produce wines with higher fruit and floral perceptions.
Assuntos
Fermentação , Odorantes , Oenococcus , Saccharomyces cerevisiae , Compostos Orgânicos Voláteis , Vinho , Vinho/análise , Vinho/microbiologia , Saccharomyces cerevisiae/metabolismo , Saccharomyces cerevisiae/química , Odorantes/análise , Compostos Orgânicos Voláteis/metabolismo , Compostos Orgânicos Voláteis/química , Compostos Orgânicos Voláteis/análise , Oenococcus/metabolismo , Frutas/química , Frutas/microbiologia , Frutas/metabolismo , Lactobacillales/metabolismo , Vitis/microbiologia , Vitis/química , Vitis/metabolismo , Humanos , Lactobacillus plantarum/metabolismoRESUMO
Angelica is a large genus of plants belonging to the Apiaceae family that includes about 100 species of biennial or perennial herbs. Several species of this genus are extensively used in various traditional medicines and, despite their content in toxic furanocoumarins, also as food. In this study, the chemical composition of the essential oil (EO) from aerial flowering parts of Angelica sylvestris L., a plant distributed in Europe, North and Central Asia, collected in the Isle of Skey (Scotland), was analyzed by GC and GC-MS. No one report has been previously published on this accession. The result showed the presence of a large quantity of monoterpene hydrocarbons with limonene (51.89%), by far, as the most abundant component. Other metabolites present in lesser quantity were ß-pinene (4.61%), α-pinene (3.54%), and thymol (3.33%). Considerations with respect to all the other EOs of A. sylvestris taxa, studied so far, were carried out.
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Plectranthus L'Hér is a large genus of Lamiaceae family comprising of ca. 300 species distributed through the tropical and warm regions of the Old-World, including Africa, from Ethiopia to Tanzania, Asia and Australia. Several species are edible, and some ones have been also used as traditional medicinal of several countries. Phytochemical investigations on non-volatile metabolites of species of this genus indicated them of source of diterpenoids with abietane, phyllocladanes, kaurene skeleton. Plectranthus ornatus Codd. is an invasive, ornamental and traditional medicinal plant native of Central-East Africa, which was spread around the world by Portuguese, especially in the Americas. In the present communication, the aerial parts of P. ornatus, identified wild for the first time in Israel, were analysed for the composition of its essential oil, using gas chromatography-mass spectrometry (GC-MS). Considerations with respect to all the other essential oils of P. ornatus accessions were carried out.
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Heracleum is a large genus of plants belonging to Apiaceae family that includes about 90 species of biennial or perennial herbs. Several species of this genus are extensively used in various traditional medicines and, despite their content in toxic furanocoumarins, also as food. In the present study the chemical composition of the essential oil (EO) from flowering aerial parts of Heracleum sphondylium L. subsp. sphondylium, a plant distributed in Europe and North-West Africa, collected in the Isle of Skye (Scotland), was analyzed by GC and GC-MS. No one report has been previously published on any British accession. The result showed the presence of large quantity of sesquiterpene hydrocarbons and aliphatic esters, with bicyclogermacrene (31.6%) and octyl acetate (29.5%), by far, as the most abundant components. Considerations with respect all the other EOs of H. sphondylium taxa, studied so far, were carried out.
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The genus Stachys L. (Lamiaceae) comprises more than 300 species as annual or perennial herbs or small shrubs, spread in temperate regions of Mediterranean, Asia, America, and Southern Africa. Several species have been used in the traditional medicine to treat stress, skin inflammations, gastrointestinal disorders, asthma, and genital tumours. In the present study the chemical composition of the essential oil from aerial parts of Stachys ocymastrum L. Briq., belonging to section Olisia, endemic of the Western Mediterranean and Greece and collected in Sicily, was analysed by GC-MS. No one report has been previously published on any European accession of this species. The result showed the presence of large quantity of the diterpenoid phytol (23.80%). Other metabolites present in high quantity were ß-caryophyllene (17.95%), geranyl-α-terpinene (13.26%) and trans-chrysanthenyl acetate (9.85%). Chemical considerations with respect all the other oils of Stachys taxa, belonging to section Olisia studied so far, were carried out.
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The genus Nepeta L. (Lamiaceae) comprises about 300 species as annual or perennial herbs or small shrubs, spread in central and southern Europe, the Near East, central and southern Asia, and some areas of Africa. Several species have been used in the traditional medicine. In the present study, the chemical composition of the essential oils from aerial parts of two populations of Nepeta apuleji Ucria collected in Sicily, a rare species, growing also in South Spain and NW Africa, were analysed by GC-MS. No one has been previously worked and published on the essential oil of this species. Main constituents of the two oils of the two populations were the monoterpenes ß-pinene (11.6-6.3%) and γ-terpinene (9.4-5.0%), and the sesquiterpenes ß-caryophyllene (11.9-9.8%) and germacrene D (1.8-13.0%). The chemical profile of the two essential oils presented herein and they compared with previously investigated Nepeta taxa oils, reported in the article.
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The genus Pulicaria Gaertn. (Asteraceae) comprises more than ninety-two species as annual or perennial herbs or small shrubs, distributed in Africa, Europe, and Asia, and concentrated mainly in the Mediterranean region. Several species have been used in the traditional medicine of many countries. In the present study the chemical composition of the essential oil from aerial parts of Pulicaria odora (L.) Rchb., present in the Mediterranean region and collected in Sicily, was analysed by GC-MS. No papers have been previously published on the essential oil of the aerial part of this species. The result showed the presence of large quantity of carbonyl compounds (25.29%), oxygenated sesquiterpenes (23.28%) and thymol derivatives (16.76%). Chemical considerations with respect of other oils of Pulicaria taxa were carried out.
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The genus Cytisus is native Canary Islands, Europe to Mediterranean, Morocco, Algeria and Tunisia and several species of the genus are used in folk medicine of different countries. In this work the chemical composition of the essential oils from the aerial parts of three taxa of this genus growing wild in Sicily, Cytisus scoparius (L.) Link, C. villosus Pourr. and C. aeolicus Guss., has been investigated. No one report has been published on the Sicilian accession of the former two species, and, at the best of our knowledge, C. aeolicus is devoid of any chemical investigation. Cytisus scoparius and C. aeolicus essential oils have similar composition characterised by the occurrence of almost the same amount of compounds belonging to "other" class (59.5-52.0%) and carbonyl compounds (22.2-19.6%). Cytisus villosus showed a different composition with hydrocarbons as the main class (52.0%), totally absent in the other two species.
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The three genera Geocaryum Coss., Conopodium W.D.J. Koch, and Bunium L. are closely related, and their correct identification is complex. The first two genera are distributed in Europe and North Africa, while several Bunium species also occur in Asia. In the present study, we analysed the chemical composition of the essential oil of the aerial parts of Geocaryum capillifolium (Guss.) Coss. a rare species collected in Sicily, which also grows in the Iberian Peninsula, Algeria, and Greece, was analysed using GC-MS. The main constituents of the essential oil were sesquiterpene hydrocarbons involving cis-ß-farnesene (31.2%), trans-ß-caryophyllene (20.0%), and germacrene D (8.5%). The chemical profile of the essential oil presented here was compared with the oils of previously investigated Geocaryum, Conopodium, and Bunium taxa, as reported in the literature. To the best of our knowledge, no report has been previously published about the essential oil of the Sicilian accession of this species.
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Cyanus Mill. genus, belonging to the Asteraceae family, includes more than 50 taxa, mainly growing in Central and Southern Europe, North Africa, Asia Minor, and the Caucasus. Previous investigations on Cyanus taxa have shown that they are rich source of flavonoids and phenolic compounds but, differently from species of genus Centaurea, almost devoid of sesquiterpene lactones. In the present study, the chemical composition of the essential oils from aerial parts of Cyanus adscendens (CA) and C. orbelicus (CO), collected in Bulgaria, and not previously investigated, was evaluated by GC-MS. The main components of CA were α-bergamotene (31.3%), (Z,Z,Z)-9,12,15-octadecatrien-1-ol (14.5%) and calarenepoxide (11.0%). Caryophyllene oxide (12.0%), together with α-cadinol (10.9%) and spathulenol (8.8%), were recognized as the main constituent of C. orbelicus EO. Furthermore, a complete review on the composition of all essential oils of the Cyanus taxa studied so far has been inserted and cluster analysis (PCA) was carried out.
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The genus Phagnalon Cass. (Asteraceae) is widely distributed from Macaronesia in the West to the Himalayas in the East, from South France and Nord Italy to Ethiopia and Arabian Peninsula. Species of this genus have been used in folk medicine of many countries as medicinal herbs and they are also used such as food. The extracts and the essential oils (EOs) of these plants have reported antimicrobial, antioxidant, antidiabetic, antitumor, etc. properties and they have different biological applications. Phagnalon sinaicum Bornm. and Kneuck. is a very rare plant native of Middle East. It grows primarily in the desert or dry scrubland biome. Its EO, never previously investigated, was analysed by GC-MS. The EO was very rich in oxygenated monoterpenes, with artemisia ketone (20.40%), α-thujone (19.36%), and santolina alcohol (13.29%) as main constituent. Some considerations with respect to all the other EOs of Phagnalon taxa studied so far were carried out.
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Cynoglossum L. is a taxonomically difficult genus belonging to the Boraginaceae family, distributed in Asia, Europe, mainly in Turkey, and in the Mediterranean region. Plants of this genus are used against various diseases in the ethnomedicine of several countries. In the present study, the chemical composition of the essential oil was obtained from the hydrodistillation of aerial parts of the Sicilian accession of Cynoglossum clandestinum Desf. was analysed by GC and GC-MS. The main constituents of the essential oil were aldehydes and ketones (69.9%) with nonanal (18.9%), 4-sec-butoxy-2-butanone (18.1%), and 3-methyl-butanal (13.1%) as main metabolites. No one paper has been previously published on the essential oil of this species, and there is a lack of studies also in the near related genera. The aim of this work is in fact, to study a species that has never been investigated, and through this, try to help place it within the Boraginaceae family.