scholarly journals Cristalinidad de microfibras de celulosa obtenidas de Cistus ladanifer y Erica arborea

2019 ◽  
pp. 0-0
Author(s):  
Paula Carrión-Prieto ◽  
Pablo Martín-Ramos ◽  
Salvador Hernández-Navarro ◽  
Luis F. Sánchez-Sastre ◽  
José Luís Marcos-Robles ◽  
...  
Keyword(s):  
Cistus Ladanifer ◽  
Erica Arborea

scholarly journals Vibrational and Thermal Studies of Essential Oils Derived from Cistus ladanifer and Erica arborea Shrubs

2017 ◽  
Vol 12 (1) ◽  
pp. 1934578X1701200 ◽  
Author(s):  
Paula Carrión-Prieto ◽  
Pablo Martín-Ramos ◽  
Teresa M.R. Maria ◽  
Salvador Hernández-Navarro ◽  
Fermín Garrido-Laurnaga ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Fourier Transform ◽  
Essential Oils ◽  
Thermal Studies ◽  
Extraction Process ◽  
Cistus Ladanifer ◽  
Shrub Species ◽  
Thermoanalytical Techniques ◽  
Erica Arborea ◽  
Different Content

Essential oils from the two most representative shrub species from the Iberian Peninsula (namely Cistus ladanifer L. and Erica arborea L.) have been characterized by Fourier transform infrared spectroscopy (FTIR) and thermoanalytical techniques (TG/DTG and DSC). Vibrational spectra have been compared with those of components of the plants, and with those of oils, gums and resins from other species. The different content in terpenoids of C. ladanifer oil (mainly mono- and sesquiterpenoids) and E. arborea oil (mainly triterpenoids) is reflected in the ATR-FTIR by the position of the bands at around 2873 cm−1, 1730 cm−1 and 1678 cm−1. As regards their thermal behavior, C. ladanifer-derived oil evinced higher thermal stability than that of obtained from E. arborea: the pyrolysis of the former was sensitized at 210°C, whereas for the later it occurred at 143°C. These temperatures are high enough to state that thermolabile constituents such as terpenoids are conserved in the hydrodistillation and that this extraction process ensures the recovery of the main constituents of both essential oils.

scholarly journals Valorization of Cistus ladanifer and Erica arborea shrubs for fuel: Wood and bark thermal characterization

2017 ◽  
pp. 0-0 ◽  
Author(s):  
Paula Carrión-Prieto ◽  
Pablo Martín-Ramos ◽  
Salvador Hernández-Navarro ◽  
Luis F. Sánchez-Sastre ◽  
José L. Marcos-Robles ◽  
...  
Keyword(s):  
Thermal Characterization ◽  
Cistus Ladanifer ◽  
Fuel Wood ◽  
Erica Arborea

scholarly journals Contribución para la caracterización bioclimática del Norte de Portugal. La transición florística atlántico-mediterránea

2008 ◽  
Vol 33 ◽  
pp. 289-307
Author(s):  
Álvaro Martins ◽  
Antonio L. Crespí ◽  
Adriano Castro ◽  
Claúdia P. Fernandes ◽  
João Rocha ◽  
...  
Keyword(s):  
Cistus Ladanifer ◽  
Arbutus Unedo ◽  
Arnica Montana ◽  
The North ◽  
Analytical Scheme ◽  
Centaurea Cyanus ◽  
Erica Arborea ◽  
Erica Tetralix ◽  
Cistus Salvifolius ◽  
Informatic System

RESUMEN. Contribución para la caracterización bioclimática del norte de Portugal. La transiciónflorística atlántico-mediterránea. Este trabajo se incluye en la serie de trabajos ya iniciados por Crespíet al. (2001), con el objetivo de contribuir al conocimiento bioclimático del Norte de Portugal, através de la información florística presente. En este sentido, y para proceder a una posible cartografiade las áreas biogeográficas naturales desde una perspectiva termopluviométrica, son ahora introducidos39 nuevos táxones para la relación ya existente. Los táxones analizados en esta aportación son: Anthemistriumfetti f. flosculosa, Arnica montana subsp. atlantica, Aster aragonensis, Carduus bourgeanus,Carduus carpetanus, Carduus platypus subsp. platypus, Carduus platypus var. granatensis, Carduuspycnocephalus, Centaurea cyanus, Centaurea geresensi, Centaurea herminii subsp. herminii, Centaurealangeana, Centaurea rivularis, Centaurea triumfetti subsp. lingulata, Leucanthemopsis pallida subsp.flaveola, Leucanthemopsis pallida subsp. pulverulenta, Leuzea rhaponticoides, Phalacrocarpumhoffmannseggii, Santolina rosmarinifolia, Santolina semidentata, Arbutus unedo, Cistus ladanifer,Cistus laurifolius, Cistus populifolius, Cistus psilosepalus, Cistus salvifolius, Erica arborea, Ericaaustralis, Erica ciliaris, Erica cinerea, Erica lusitanica, Erica scoparia, Erica tetralix, Erica umbellata,Halimium lasianthum subsp alyssoides, Halimium lasianthum subsp lasianthum, Halimium ocymoides,Halimium umbellatum subsp umbellatum, Halimium umbellatum subsp. viscosum. De modo a poderalcanzar los objetivos propuestos, se procede a la aplicación de una rutina programática multivariada,basada en un sistema de información geográfico (SIG), a partir del cual cada uno de los táxonesestudiados es georeferenciado sobre cartografía ambiental (confeccionada y publicada por el Institutopara a Conservação da Natureza, del Ministerio del Ambiente portugués), comparándola después conlas caracterizaciones fitoclimáticas de Franco (1994) y de Costa et al. (1998). Los resultados obtenidosconfirman no sólo un acusado efecto gradual de transición entre el área de influencia bioclimáticaatlántica y la mediterránea, como además la existencia de una tendencia de comportamientofitoclimático intermedio, no considerada hasta el momento en las caracterizaciones bioclimáticas yapublicadas.Palabras clave. Taxonomía, distribución, SIG, caracterización bioclimática.ABSTRACT. Approach on the climatic characterization for Northern of Portugal. The atlanticmediterraneanfloristic transition. Thirty-nine specific and infraspecific taxa with different occurrencesin the continental portuguese area are referred in the present work. In the light of these behaviours,the climatic and geomorphological variability of the North of Portugal has been importantenvironmental factors to explain the floristic diversity in this part of the country. In this case, the taxaanalysed are: Anthemis triumfetti f. flosculosa, Arnica montana subsp. atlantica, Aster aragonensis,Carduus bourgeanus, Carduus carpetanus, Carduus platypus subsp. platypus, Carduus platypus var.granatensis, Carduus pycnocephalus, Centaurea cyanus, Centaurea geresensi, Centaurea herminiisubsp. herminii, Centaurea langeana, Centaurea rivularis, Centaurea triumfetti subsp. lingulata,Leucanthemopsis pallida subsp. flaveola, Leucanthemopsis pallida subsp. pulverulenta, Leuzearhaponticoides, Phalacrocarpum hoffmannseggii, Santolina rosmarinifolia, Santolina semidentata,Arbutus unedo, Cistus ladanifer, Cistus laurifolius, Cistus populifolius, Cistus psilosepalus, Cistussalvifolius, Erica arborea, Erica australis, Erica ciliaris, Erica cinerea, Erica lusitanica, Ericascoparia, Erica tetralix, Erica umbellata, Halimium lasianthum subsp alyssoides, Halimium lasianthumsubsp lasianthum, Halimium ocymoides, Halimium umbellatum subsp umbellatum, Halimiumumbellatum subsp. viscosum. Because of the appropriate management of the floristic richness, amultivariate statistic routine is applied on a Geographical Informatic System (GIS) the chorological,geomorphological and climatic characterization for each one are described in this paper. The geologicalsubstrate and the altitudinal classes are focused for the geomorphological approach, as well as twobiogeographic classifications are used to correlate the occurrence of the taxa and their bioclimaticpreferences. In the light of this analytical scheme, every taxa is geo-referenced upon an environmentalcartography (elaborated by the Instituto para a Conservação da Natureza), compared with the Franco´s(1994) and Costa´s et al. (1998) phytoclimatic characterizations. The results obtained are pointingout the floristic progressive differentiation between the atlantic bioclimatic influence and themediterranean one, as well as the existence of an intermediate bioclimatic tendency which had neverbeen considered so far.Key words. Taxonomy, distribution, GIS, environmental characterization

Évaluation de la teneur des composés phénoliques, des proprieties antioxydantes et antimicrobiennes de l’espèce Erica arborea L. (Ericaceae) dans la médecine traditionnelle du Tell sétifien dans l’Est Algérien

2019 ◽  
Author(s):  
K. Yaici ◽  
S. Dahamna ◽  
I. Moualek ◽  
H. Belhadj ◽  
K. Houali
Keyword(s):  
Activité Antioxydante ◽  
Activité Antimicrobienne ◽  
Médecine Traditionnelle ◽  
Composés Phénoliques ◽  
Bacillus Subtilus ◽  
Erica Arborea ◽  
Infections Urinaires ◽  
Flavonoïdes Totaux ◽  
Extraits Aqueux ◽  
Β Carotene

Les sommités florales d’Erica arboea L. sont largement utilisées sous forme d’infusion en médecine traditionnelle et sont recommandées dans le Tell sétifien pour traiter et prévenir les infections urinaires aiguës et chroniques principalement. Nous avons soumis les extraits aqueux des feuilles et des fleurs à un dosage des polyphénols, des flavonoïdes et à la détermination des activités antioxydante et antimicrobienne. Les teneurs en composés phénoliques et flavonoïdes totaux ont montré une corrélation avec les activités antioxydantes évaluées. Les tests antioxydants utilisés (DPPH, FRAP, CAT, blanchiment du β-carotène et piégeage du radical hydroxyle) ont montré que le test du DPPH a donné la meilleure activité radicalaire. En outre, l’extrait des feuilles s’est mieux exprimé dans les tests du DPPH, du FRAP et du β- carotène. Les tests de la CAT et le radical hydroxyle ont par contre révélé une activité antioxydante plus importante pour l’extrait de fleurs. Pour l’activité antimicrobienne, on a utilisé la méthode de diffusion en milieu gélosé en ayant recours à la méthode des puits. Les deux extraits ont montré une activité antimicrobienne contre les bactéries à Gram positif Staphylococcus aureus ATCC25923, Bacillus subtilus CLAM20302, Bacillus cereus CLAMH300. L’extrait des feuilles a été plus actif avec une valeur variant de 15 à 23 mm comparé à celui des fleurs (17–18,5 mm). Les valeurs de la concentration minimale inhibitrice ont été trouvées dans une gamme variant de 6,25 à 25 mg/ml pour les extraits des feuilles et des fleurs respectivement. Les résultats de l’étude peuvent enrichir les données existantes et montrent que les feuilles et les fleurs d’Erica arborea L. constituent une source d’agents antioxydants et antibactériens.

scholarly journals Delignification of Cistus ladanifer Biomass by Organosolv and Alkali Processes

Energies ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 1127
Author(s):  
Júnia Alves-Ferreira ◽  
Ana Lourenço ◽  
Francisca Morgado ◽  
Luís C. Duarte ◽  
Luísa B. Roseiro ◽  
...  
Keyword(s):  
Steam Distillation ◽  
Enzymatic Saccharification ◽  
Added Value ◽  
Cistus Ladanifer ◽  
Reaction Conditions ◽  
Zone Electrophoresis ◽  
Monomeric Composition ◽  
Capillary Zone ◽  
Soluble Lignin ◽  
Pretreated Biomass

Residues of Cistus ladanifer obtained after commercial steam distillation for essential oil production were evaluated to produce cellulose enriched solids and added-value lignin-derived compounds. The delignification of extracted (CLRext) and extracted and hydrothermally pretreated biomass (CLRtreat) was studied using two organosolv processes, ethanol/water mixtures (EO), and alkali-catalyzed glycerol (AGO), and by an alkali (sodium hydroxide) process (ASP) under different reaction conditions. The phenolic composition of soluble lignin was determined by capillary zone electrophoresis and by Py-GC/MS, which was also used to establish the monomeric composition of both the delignified solids and isolated lignin. The enzymatic saccharification of the delignified solids was also evaluated. The ASP (4% NaOH, 2 h) lead to both the highest delignification and enzymatic saccharification (87% and 79%, respectively). A delignification of 76% and enzymatic hydrolysis yields of 72% were obtained for AGO (4% NaOH) while EO processes led to lower delignification (maximum lignin removal 29%). The residual lignin in the delignified solids were enriched in G- and H-units, with S-units being preferentially removed. The main phenolics present in the ASP and AGO liquors were vanillic acid and epicatechin, while gallic acid was the main phenolic in the EO liquors. The results showed that C. ladanifer residues can be a biomass source for the production of lignin-derivatives and glucan-rich solids to be further used in bioconversion processes.

In-vivo anti-inflammatory activity and safety assessment of the aqueous extract of Algerian Erica arborea L. (Ericaceae) aerial parts

2021 ◽  
Vol 271 ◽  
pp. 113881
Author(s):  
Djouher Amroun ◽  
Meriem Hamoudi ◽  
Seddik Khennouf ◽  
Sabrina Boutefnouchet ◽  
Daoud Harzallah ◽  
...  
Keyword(s):  
Aqueous Extract ◽  
Safety Assessment ◽  
Inflammatory Activity ◽  
Aerial Parts ◽  
Erica Arborea ◽  
Anti Inflammatory

Influence of Heat on Seed Germination of Cistus Laurifolius and Cistus Ladanifer

1992 ◽  
Vol 2 (1) ◽  
pp. 15 ◽  
Author(s):  
L Valbuena ◽  
R Tarrega ◽  
E Luis
Keyword(s):  
Seed Germination ◽  
High Temperatures ◽  
Exposure Time ◽  
Germination Rate ◽  
Heat Exposure ◽  
Cistus Ladanifer ◽  
Different Temperatures ◽  
Petri Dishes ◽  
Germinated Seeds

The influence of high temperatures on germination of Cistus laurifolius and Cistus ladanifer seeds was analyzed. Seeds were subjected to different temperatures for different times, afterwards they were sowed in plastic petri dishes and monitored for germinated seeds over two months.The germination rate observed in Cistus ldanifer was greater than in Cistus laurifolius. In both species, heat increased germination percentages. For Cistus laurifolius higher temperatures or longer exposure times were needed. Germination percentages of Cistus ladanifer were lower when heat exposure time was 15 minutes.It must be emphasized that germination occurred when seeds were not treated, while seeds exposed to 150�C for 5 minutes or more did not germinate.

scholarly journals Effects of Increasing Doses of Condensed Tannins Extract from Cistus ladanifer L. on In Vitro Ruminal Fermentation and Biohydrogenation

Animals ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 761
Author(s):  
Olinda Guerreiro ◽  
Susana P. Alves ◽  
Mónica Costa ◽  
Maria F. Duarte ◽  
Eliana Jerónimo ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Condensed Tannins ◽  
Volatile Fatty Acids ◽  
Secondary Compounds ◽  
Cistus Ladanifer ◽  
Ruminal Fermentation ◽  
Experimental Conditions ◽  
Ct Dose ◽  
Linear Decrease

Cistus ladanifer (rockrose) is a perennial shrub quite abundant in the Mediterranean region, and it is a rich source in secondary compounds such as condensed tannins (CTs). Condensed tannins from C. ladanifer were able to change the ruminal biohydrogenation (BH), increasing the t11–18:1 and c9,t11–18:2 production. However, the adequate conditions of the C. ladanifer CTs used to optimize the production of t11–18:1 and c9,t11–18:2 is not yet known. Thus, we tested the effect of increasing the doses of C. ladanifer CT extract (0, 25, 50, 75 and 100 g/kg dry matter (DM)) on in vitro rumen BH. Five in vitro batch incubations replicates were conducted using an oil supplemented high-concentrate substrate, incubated for 24 h with 6 mL of buffered ruminal fluid. Volatile fatty acids (VFAs) and long chain fatty acids (FA) were analyzed at 0 h and 24 h, and BH of c9–18:1, c9, c12–18:2 and c9, c12, c15–18:3, and BH products yield were computed. Increasing doses of C. ladanifer CTs led to a moderate linear decrease (p < 0.001) of the VFA production (a reduction of 27% with the highest dose compared to control). The disappearance of c9–18:1 and c9,c12–18:2 as well as the production of t11–18:1 and c9, t11:18:2 was not affected by increasing doses of C. ladanifer CTs, and only the disappearance of c9, c12, c15–18:3 suffered a mild linear decrease (a reduction of 24% with the highest dose compared to control). Nevertheless, increasing the C. ladanifer CT dose led to a strong depression of microbial odd and branched fatty acids and of dimethyl acetals production (less than 65% with the highest dose compared to control), which indicates that microbial growth was more inhibited than fermentative and biohydrogenation activities, in a possible adaptative response of microbial population to stress induced to CTs and polyunsaturated fatty acids. The ability of C. ladanifer to modulate the ruminal BH was not verified in the current in vitro experimental conditions, emphasizing the inconsistent BH response to CTs and highlighting the need to continue seeking the optimal conditions for using CTs to improve the fatty acid profile of ruminant fat.

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