10 documents found, page 1 of 1
Labdanum resin from Cistus ladanifer L. as a source of compounds with anti-diab...
Frazão, David F.; Delgado, F.M.G.; Gonçalves, José Carlos; Gomes, Carlos Martins; Sosa Diaz, Teresa; Silva, Amélia M.Labdanum resin or “gum” can be obtained from Cistus ladanifer L. by two different extraction methods: the Zamorean and the Andalusian processes. Although its main use is in the fragrance and perfumery sectors, ethnobotanical reports describe its use for medicinal purposes in managing hyperglycemia and mental illnesses. However, data concerning the bioactivities and pharmacological applications are scarce. In th...
Rockrose land management : contribution of periodic harvesting to increase valu...
Frazão, David F.; Gonçalves, José Carlos; Silva, Amélia M.; Delgado, F.M.G.: Cistus ladanifer L. (Cistaceae) occupies extensive areas as a dominant species (shrublands) or is associated to other major forest typologies in the Iberian Peninsula. Cistus ladanifer shrublands are mostly present in oligotrophic lands with little valorisation and management and as they develop over the years (up to 20-years-old) they promote the ignition and perpetuation of fire. To contribute to the proper...
Labdanum resin from Cistus ladanifer L. : evaluation of residual water vs. extr...
Frazão, David F.; Mesquita, Maria da Conceição; Silva, Helena; Silva, Amélia M.; Gonçalves, José CarlosCistus ladanifer L. (Cistaceae) is an endemic and abundant resource in the Iberian Peninsula and North Africa. This plant exudes an aromatic resin nowadays valued in the perfumery and fragrance industry. Traditional processes for the extraction and isolation of such resin use boiling water or alkaline water followed by acidic precipitation. However, a concern arises about the effluents resulting from these extr...
Cistus ladanifer L. tissue culture from leaf and stem explants.
Frazão, David F.; Delgado, F.M.G.; Gonçalves, José Carlos; Barroca, Celina; Silva, Amélia M.Cistus ladanifer L. exudes a phenolic and terpenoid resin with interesting bioactive and aromatic properties. Despite its high abundance in the wild, this plant can be cultivated to advantage on oligotrophic and trace-elements contaminated soils. Plant tissue culture may be used to produce specific metabolites or for clonal propagation of specific genotypes for plantation. From a biotechnological perspective th...
Labdanum resin from Cistus ladanifer L.: a natural and sustainable ingredient f...
Frazão, David F.; Delgado, F.M.G.; Gonçalves, José Carlos; Gomes, Carlos Martins; Steck, Jan L.; Keller, Judith; Bunzel, MirkoLabdanum resin from Cistus ladanifer L. (Cistaceae) is an abundant natural resource in the Iberian Peninsula worth being explored in a sustainable manner. It is already used in the cosmetic industry; mainly by the fragrances/perfumery sector. However, given the highest market share and traditional uses, labdanum resin also has the potential to be used and valued as a cosmetic ingredient for skincare. Aiming to ...
Cistus ladanifer seeds: from ancient snack to novel and sustainable food ingred...
Frazão, David F.; Paulo, Luísa; Peres, Maria de Fátima; Resende, Mafalda; Espírito Santo, Christophe; Barroca, Celina; Rodrigues, A.M.; Delgado, F.M.G.Cistus ladanifer is a persistent, abundant and widespread underexplored resource in the Iberian Peninsula. The seeds have been used as food for centuries, although their nutritional value and potential as food ingredients have not been exploited until now. In this study seeds from natural shrubland were collected three times during summer for two consecutive years. Analytical evaluation of the macronutrient con...
Cistus ladanifer (Cistaceae) : a natural resource in Mediterranean-type ecosystems
Frazão, David F.; Raimundo, Joana; Domingues, Joana Lopes; Quintela-Sabarís, Celestino; Gonçalves, José Carlos; Delgado, F.M.G.Cistus ladanifer has a well-defined taxonomic identity. 2,2,6-trimethylcyclohexanone may be an authenticity and taxonomic marker. Its traits and applications make it a possible economic resource fitted for Mediterranean areas. Cistus ladanifer is a dominant shrub species endemic to the western Mediterranean region. Due to its dominant nature and its potential ecological, aromatic or pharmacological applications...
Morphological and physiological effects of two different light sources on in vi...
Gonçalves, José Carlos; Skec, A.; Krnjac, A.; Delgado, Teresa; Frazão, David F.; Farinha, Nelson; Domingues, Joana Lopes; Coelho, Maria TeresaThe morphology and physiology of plants grown in vitro are regulated by various environmental factors such as light, temperature, humidity and carbon dioxide. Light, in its various parameters such as spectral quality, photon flux and photoperiod, is an important factor among these and generally influences the overall growth and development of plants in vitro. Light sources commonly used for in vitro plant cultu...
Physicochemical and sensorial characterization of honey spirits
Anjos, O.; Frazão, David F.; Caldeira, IldaDistilled spirits are usually made from fermented sugar-based materials, such as wines or fermented fruits, but other products can be used, namely berries or honey. In this work, an evaluation of honey spirits is done based on its physicochemical and sensory characteristics. Fourteen honey spirit samples of different brands of honey spirit were purchased at the market and from artisan Portuguese producers. Seve...
Filmes ativos com resveratrol para controlo de Campylobacter spp. e Arcobacter ...
Frazão, David F.Campylobacter spp. e Arcobacter spp. têm sido associadas a doenças de origem alimentar através do consumo de, principalmente, carne de frango. O embalamento de carnes com filmes antimicrobianos pode ser uma estratégia eficaz para, ativamente, controlar contaminações microbianas durante o seu transporte e armazenamento. Assim, no presente trabalho, foram preparados filmes de quitosano (Ch) e/ou metilcelulose (MC...