Current status of genus Impatiens: Bioactive compounds and natural pigments with health benefits

The market for edible flowers has grown exponentially due to consumers demand. This has been motivated by the concern to include healthier foods in the daily diet, leading to a great interest in these natural matrices. However, and although the consumption of this type of matrices are popularly associated with health benefits, scientific studies are still scarce. The industry seeks to satisfy the consumers demands and, at the same time, seeks to launch new challenges in the sector, in order to outline new conservation and production strategies. Although there are several flowers with edible potential in nature, many are still little explored or unnoticed, so this type of study is increasingly sought after. Scope and approach: The present review intendeds to explore the context of edible flowers as well as their conditions of production and consumption. Then, focusing on the characterization of the genus Impatiens, which, although is still little explored, gathers data on its chemical and nutritional characterization, bioactivities, and the possible exploration of natural pigments and industrial application. Key findings and conclusions: Several studies have been focused on the chemical characterization of flowers, evaluation their edibility, as well as validating their bioactive potential. In particular, the genus Impatiens is characterized by presenting perennial and succulent herbs with attractive colors, normally found in tropical forests. There are countless studies on the bioactive activities present in these edible flowers. In addition, its pigmentation has a direct relationship with the presence of several compounds, especially anthocyanins and their derivatives. These bioactive compounds have a great interest to the food industry and consumers, due to their diverse health benefits that are provided by their regular consumption.The authors are grateful to the Foundation for Science and Technology (FCT, Portugal) for financial support by national funds FCT/ MCTES to CIMO (UIDB/00690/2020). L. Barros would like to thank the national funding by FCT, P.I., through the institutional scientific employment program-contract. To the project AllNat for the contract of C. Caleja (Project AllNat POCI-01-0145-FEDER-030463). The authors are also grateful to the project TRANSCoLAB 0612_TRANS_CO_LAB_2_P. This work is funded by the European Regional Development Fund (ERDF) through the Regional Operational Program North 2020, within the scope of Project Mobilizador Norte-01-0247-FEDER-024479: ValorNatural ®, Norte-01-0145-FEDER-000042: Project GreenHealth. This work was also financed by ERDF, through the Incentive System to Research and Technological Development, within the Portugal2020 Competitiveness and Internationalization Operational Program, for the project POCI-01-0247-FEDER-046112: BIOMA.info:eu-repo/semantics/publishedVersio

Consumo de matéria seca e ganho de peso de novilhas leiteiras alimentadas com cana-de-açúcar e alfafa em pastejo.

O objetivo foi avaliar o efeito da substituição parcial da cana-de-açúcar por alfafa em pastejo, sobre o consumo de matéria seca e o ganho de peso de novilhas da raça Holandesa e mestiças das raças Holandesa e Jersey. Vinte e quatro novilhas com média de idade de 11,6 meses e de peso vivo de 225 kg foram distribuídas em delineamento em blocos casualizados em dois tratamentos: tratamento A - 6,6 kg de cana-de-açúcar + uréia e 1,8 kg de concentrado (base matéria seca - MS); tratamento B - 2,8 kg de cana-de-açúcar + uréia, 1,8 kg de concentrado e três horas de pastejo em alfafa. No tratamento A, a média do consumo diário de cana-de-açúcar foi de 6,2 kg de MS por novilha; e no tratamento B, de 2,8 kg de MS de cana-de-açúcar e 2,4 kg de MS de alfafa. A cana-de-açúcar e a alfafa possuíam, em média, 2,2% e 29,0% de proteína bruta, 43,3% e 36,0% de fibra insolúvel em detergente neutro e 62,8% e 70,0% de digestibilidade "in vitro" da matéria seca, respectivamente. Os ganhos diários de peso vivo foram de 0,69 e de 0,92 kg/novilha nos tratamentos A e B, respectivamente, o que indica a superioridade da associação da cana-de-açúcar com a alfafa em pastejo, quando comparada com a cana-de-açúcar como volumoso único na dieta de novilhas leiteiras

Alfafa em pastejo como parte da dieta de vacas leiteiras de alta produção.

O objetivo foi avaliar o efeito da alfafa sob pastejo como parte da dieta de vacas leiteiras, associada à silagem de milho e concentrado, sobre a produção de leite por animal e por hectare. Foram utilizadas 24 vacas da raça Holandesa distribuídas em delineamento em blocos ao acaso em três tratamentos (A, B e C). No tratamento A (testemunha) os animais foram alimentados com silagem de milho e concentrado. Nos tratamentos B e C, além da silagem de milho e concentrado, os animais pastejaram a alfafa. O pastejo foi rotacionado e a quantidade de concentrado foi de 9,8; 9,8 e 7,0 kg de matéria seca/vaca/dia para os tratamentos A, B e C, respectivamente. A disponibilidade de forragem foi de 1537,2 e 1437,0 kg de MS/ha e a oferta, de 6,3 e 10,7 kg MS/vaca/dia, nos tratamentos B e C, respectivamente. A alfafa tinha em média 27,3% de PB, 32,6% de FDN e 67,2% de DIVMS. As médias de produção foram de 29,7 ± 0,61; 31,1 ± 0,55 e 29,9 ± 0,64 l/vaca/dia nos tratamentos A, B e C, respectivamente, e não houve diferença entre os tratamentos ( P>0,05). Os tratamentos com pastejo em alfafa mais silagem de milho apresentaram maior potencial de produção de leite por hectare (92,3 e 70,8 Ilha/dia), quando comparado com o tratamento com silagem de milho como único volumoso (59,4 Ilha/dia)

Genomic analysis in the study of drought tolerance using recombinant inbred lines and recurrent selection.

Plant breeding for drought tolerance is one of the approaches that can be applied in order to improve water use efficiency in agriculture

As razões econômicas da destruição de um recurso natural: o caso de castanhais no Sudeste paraense.

Publicado como resumo em inglês: The economic reasons of natural resources destruction: the case of Brazil nut trees in the southeast of the Para State. in: WORLD CONGRESS OF RURAL SOCIOLOGY, 10.; BRAZILIAN CONGRESS OF RURAL ECONOMY AND SOCIOLOGY, 38., 2000, Rio de Janeiro. Abstracts. Rio de Janeiro: [s.n.], 2000. p. 101

Genetic components of combining ability in a complete diallel.

Obtained g and Sii values were associated to theoretical concepts of the respective parameters in a complete diallel with 28 parents and the simulation of five hypothetic variables with five different d/a relations (0, 0.5, 1.0, 1.5, and 2.0). These were controlled by a single gene with two alleles whose parents were represented by different frequencies of the favorable allele (1/28, 2/28,....,28/28). The conclusion was drawn that the existence of dominance deviations in the loci regulating the trait influences the GCA estimates considerably and that there is a high correlation (0.96) between the absolute Sii and the respective values. The joint evaluation of g1 and Sii estimates provides information on the genetic quality of the populations of the diallel

A destruição de recursos naturais: o caso da castanha-do-pará no sudeste paraense.

A dimensão história do processo de destruição dos estoques de castanheiras. A dimensão do sistema extrativo. O desmatamento das áreas de castanhais no sudeste paraense e a queda na extração. As exportações de castanha-do-pará. Rentabilidade do extrativismo da castanha-do-pará versus atividades agrícolas.bitstream/item/61980/1/Oriental-Doc32.pd

Production components, grain yield and water use efficiency of irrigated cowpea.

Cowpea cultivars, which are indicated for irrigated cropping, are recommended without proper assessment of their productive potential and water use efficiency in response to water regimes in the soil from different production environments. The aim of this study was to evaluate the production components, the yield performance and the efficiency of water use of cowpea cultivars in response to the application of irrigation depths under the soil and climate conditions of Bom Jesus, PI. The experiment was performed from June to August 2011 in a soil classified as sandy-textured Fluvic Neosol..