Bicho N.C.,Institute Investigacao Cientfica Tropical |
Leitao A.E.,Institute Investigacao Cientfica Tropical |
Ramalho J.C.,Institute Investigacao Cientfica Tropical |
De Alvarenga N.B.,Polytechnic Institute of Beja
International Journal of Food Sciences and Nutrition | Year: 2011
Arabica and Robusta coffee beans were roasted at 220 ± 10°C for 7, 9 and 11 min to identify chemical descriptors in the beverages. The pH of the beverages showed the lowest value in the medium roasting level. In each degree of browning, the soluble solids content remained slightly higher in Arabica drinks. The contents of caffeine did not vary, but trigonelline decreased with burning up intensity. Chlorogenic acids also decreased with increasing roasting time. The 5-O-caffeoylquinic acid prevailed in Arabica and Robusta beverages, but the isomers of dicaffeoylquinic and feruolilqunic acids remained higher in Robusta. It was concluded that trigonelline and total caffeoylquinic, fatty dicaffeoylquinic and fatty feruolilqunic acids detached the beverages according to roasting intensity. Caffeine and pH allowed drinks separation between both species. Soluble solids take apart Arabica and Robusta drinks in each degree of roasting. All the individual groups of chlorogenic acids also explained 90% of the variance among samples. © 2011 Informa UK, Ltd.
Abreu J.A.,Institute Investigacao Cientfica Tropical |
Figueira R.,Institute Investigacao Cientfica Tropical |
Figueira R.,University of Porto |
Figueira R.,University of Lisbon |
And 5 more authors.
Scripta Botanica Belgica | Year: 2013
Background and aims - Both Capparaceae s.s. and Cleomaceae belong to the order Brassicales. Capparaceae include nineteen genera and 439 species, and Cleomaceae thirteen genera and about 238 species. A total of forty species and infra-specific taxa are quoted for these two families from Angola, fifteen of which are considered to be strictly endemic to the country. The main aim of this study is to update the distribution of thirteen of these taxa and to provide estimates of their potential distribution, while assessing which environmental variables most influence it. Methods - One hundred and fifty herbarium specimens (LISC, LISU, LUAU, COI, K, B) were examined and their location mapped. Using MAXENT models we estimate potential distributions for the seven taxa (through Ecological Niche Model maps) for which, at least five specimens where available. Key results - Occurrence maps of endemic Capparaceae and Cleomaceae are presented. Two of these taxa (Boscia gossweileri and B. urens) have ranges extended compared to previous reports. Namibe is the Angolan region where more endemic Capparaceae and Cleomaceae have been found (57 records from 150). Precipitation appears to be the environmental parameter that most influences the distribution of these species, whether either measured as annual precipitation, precipitation in the coolest quarter, or precipitation in the driest quarter. Conclusions - Most of endemic taxa studied seem to prefer the more arid regions of the country. Comparing potential distribution models with the corresponding known occurrences, Boscia gossweileri seems to be the most under-collected. For six of the species studied, more field information is needed before potential distribution can be estimated. © 2013 National Botanic Garden of Belgium.
Catarino L.,Institute Investigacao Cientfica Tropical |
Catarino L.,University of Porto |
Indjai B.,University of Porto |
Mourao D.,Inep Instituto Nacional Of Estudos E Pesauisa
Scripta Botanica Belgica | Year: 2013
Background and aims - The Orango Island is included in the Bijagós Archipelago, Guinea-Bissau. The sanitary situation on this island is characterised by an almost absence of conventional medicinal care. In most cases traditional medicine is the only available recourse for local people to treat health problems and it plays an important role in basic health care. The purpose of this investigation was to document the medicinal use of local flora by traditional healers in the Orango Island. Methods - A survey was made on the plants used by traditional medicine agents in Orango Island during the third quarter of 2007. Thirteen healers were indicated by the community as the best holders of traditional knowledge on the island. All of them agreed to participate and were inquired through semi-structured open-ended interviews. Key results - Forty-six species of medicinal plants were referred, generally found near the villages. A total of 94 recipes were reported, from which 75 are different. The most common methods used in the preparation of traditional medicines are bark stripping, trituration, decoction, and maceration and the main administration ways are oral, topical, bath, and by inhalation. Conclusions - Most of the medicinal uses of plants reported in Orango have been previously referred for other parts of the country and for West Africa but, at the local level, the knowledge on the medicinal properties of plants seems to be restricted to specific experts and is gender dependent. The collaboration between the traditional healers and other actors in the primary health care and the research on the properties of medicinal plants can be a way to add value to local knowledge and increase the services provided by natural resources to local populations. © 2013 National Botanic Garden of Belgium.