Properties of Brazil nuts: A review

Kluczkovski, AM; Martins, Marta; Mundim, SM; Simoes, RH; Nascimento, KS; Marinho, HA; Kluczkovski, Ariane Mendonça

doi:10.5897/ajb2014.14184

Cited by 26 publications

(10 citation statements)

References 25 publications

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“…Os difratogramas foram confeccionados usando o programa Microcal Origin 6.0 e foram apresentados na seguinte ordem: amostra não tratada (Am.total); amostra desferrificada e saturada com magnésio (Mg) e posteriormente solvatada com etileno glicol (MgEG); amostra desferrificada e saturada com potássio, com leituras executadas à temperatura ambiente (K25) e, após aquecimento, nas temperaturas assinaladas (K110, K350 e K550). A interpretação dos difratogramas foi feita com base nas tabelas da base de dados do JCPDS-ICDD (ICDD, 2016). A grafia dos nomes dos minerais está de acordo com Branco (1987).…”

Section: Caracterização Mineralógica Do Solounclassified

“…E reportaram que que árvores mais produtivas de castanheira contribuem na remoção de bases trocáveis, favorecendo a acidificação do solo. Entretanto, a castanheira-do-brasil mostrou-se extratora de cálcio, os autores evidenciaram a importância do manejo visando a reposição do nutriente, como, por exemplo, a restituição ao solo dos resíduos de poda e das cascas das amêndoas e dos ouriços da castanheira (KLUCZKOVSKI et al, 2015).…”

Section: Introductionunclassified

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Caracterização Pedológica De Locais De Estudo De Populações Naturais De Castanheira-Do-Brasil No Estado De Mato Grosso

Spera

Magalhaes

Baldoni

et al. 2019

NAT

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A castanheira-do-brasil (Bertholletia excelsa Bonpl.) é nativa da Amazônia e importante espécie de exploração extrativista. O ambiente edáfico característico de áreas de ocorrência de concentração de populações naturais de castanheira-do-brasil, no norte de Mato Grosso foi avaliado. O estudo foi conduzido em quatro áreas de ocorrência de castanhais no norte de Mato Grosso, nos municípios de Itaúba, Alta Floresta, Juína e Cotriguaçu, nos quais se descreveu os perfis de solos, e dos quais foram feitas análises químicas, granulométricas e mineralógicas. Os resultados indicaram que a castanheira-do-brasil é espécie típica de clima predominante na Amazônia, que ocorre em solos ácidos, de textura variando de arenosa a média, de baixa fertilidade natural e, às vezes, com elevado teor de alumínio, entretanto, são solos cauliníticos ou cauliníticos-gibbsíticos, o que os difere da maioria dos solos de cerrados. Foram identificados solos dos grandes grupos Argissolo Vermelho Amarelo distróficos e Latossolo Vermelho Amarelo distróficos de relevo plano a ondulado.Palavras-chave: solos florestais, perfil de solo, atributos químicos, pedomorfologia, mineralogia. PEDOLOGICAL CHARACTERIZATION AT PLACES OF OCCURRENCE OF NATURAL POPULATIONS OF BRAZIL NUTS IN THE STATE OF MATO GROSSO ABSTRACT:The Brazil nuts trees (Bertholletia excels Bonpl.) are native to the Amazon and important specie of extractive exploitation. The edaphic environment characteristic of concentration areas of Brazil nuts tree specimens, in the North of Mato Grosso was evaluated in research project that studied the edaphic attributes at places of occurrence of natural populations of Brazil nuts in the State of Mato Grosso. The study was carried out in four areas of Brazil nuts occurrence in the North of Mato Grosso, in the municipalities of Itaúba, Alta Floresta, Juína and Cotriguaçu, which described the soil profiles, and which were made chemical, physical and mineralogical analysis. The results indicated that the Brazil nuts tree is a typical specie of the Amazon, which grows in the State of Mato Grosso, in soils acids, ranging from sandy to loamy texture, low natural fertility and, sometimes, with high content of aluminum, however, is a caullinitic or caullinitic-gibbsitic soils, which differs from the majority of soils of the Brazilian savanna. Soils were identified as dystrophic Red Yellow Argisols (Haplustult) and Red Yellow Latosols (Haplustox) and relief vary from plain to undulate.Keywords: forest soils, soil profile, chemical attributes, morphological attributes, mineralogy.

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Section: Caracterização Mineralógica Do Solounclassified

Section: Introductionunclassified

Caracterização Pedológica De Locais De Estudo De Populações Naturais De Castanheira-Do-Brasil No Estado De Mato Grosso

Spera

Magalhaes

Baldoni

et al. 2019

NAT

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“…High concentrations of Se have, exceptionally, also been found in Brassica genus (broccoli, cabbage, cauliflower) and onions [23]. Brazil nuts and mushrooms have extremely high concentrations of this element [6,50].…”

Section: Selenium In Food and Dietary Intakementioning

confidence: 99%

Selenium Deficiency—From Soil to Thyroid Cancer

et al. 2020

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Selenium (Se) is an essential micronutrient present in human diet, entering in the composition of selenoproteins as selenocysteine (Se-Cys) amino acid. At the thyroid level, these proteins play an important role as antioxidant and in hormone metabolism. Selenoproteins are essential for the balance of redox homeostasis and antioxidant defense of mammalian organisms, while the corresponding imbalance is now recognized as the cause of many diseases including cancer. The food chain is the main source of Se in human body. Dietary intake is strongly correlated with Se content in soil and varies according to several factors such as geology and atmospheric input. Both Se deficiency and toxicity have been associated with adverse health effects. This review synthesizes recent data on the transfer of Se from soil to humans, Se U-shaped deficiency and toxicity uptake effects and particularly the impact of Se deficiency on thyroid cancer.

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“…Evidence has shown that the Brazil nut (a native food) is a good source of FA (mono and polyunsaturated) and selenium [20,21]. Therefore, this study presents a protocol to evaluate the hypothesis that ingesting Brazil nut during lactation can modify the nutritional profile of HM, increase its energy density and selenium content, and improve its lipid composition.…”

Section: Introduction / Backgroundmentioning

confidence: 99%

Effect of maternal dietary supplementation with Brazil nut (Bertholletia excelsa) on the nutritional profile of human milk: randomized controlled trial - rationale, design, and methods

Rodrigues¹,

Reis²,

Correa³

et al. 2020

Preprint

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Background The human milk (HM) composition reflects the nutritional status and dietary intake of the nursing mother, especially regarding the fatty acids (FA) intakes. Evidence has shown that Brazil nut is a good source of FA (mono and polyunsaturated) and selenium. Thus, this study tests the hypothesis that the consumption of this nut during lactation can modify the nutritional profile of HM, increase its energy density and selenium content, and improve the lipid profile. Therefore, this study aimed to describe the design and methods of the Randomized Clinical Trial (RCT): Effect of maternal dietary supplementation with Brazil nut (Bertholletia excelsa) on the nutritional profile of HM. Method/Design It is a crossover study, conducted with mother-infant dyads (with infants born at full-term) recruited from a maternity hospital and followed up to the third month postpartum in a pediatric office. Sociodemographic, lifestyle, obstetric, and birth data were collected at 7 days postpartum. Maternal nutrition assessment data (anthropometry, body composition, food intake, biochemical tests), HM samples, and infant anthropometric and health assessment data were collected on average at 37, 52, 75, and 90 days postpartum. The nursing mothers were randomly allocated into two groups: group (1) started with supplementation of 1.5 g/day Brazil nut (case) for 15 days, followed by 15-day washout period; after the washout, the group was then considered as control and received follow-up monitoring for another 15 days; group (2) started as control for 15 days, which was followed by a washout period of 15 days, then they initiated supplementation with Brazil nut for 15 days (case).Discussion To the best of our knowledge, this is the first RCT to evaluate the effect of maternal Brazil nut supplementation on HM nutritional profile. This is a promising research area that can provide findings which will contribute to improving health and nutrition of infants, especially premature infants, admitted to Neonatal Intensive Care Units.

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Properties of Brazil nuts: A review

Cited by 26 publications

References 25 publications

Caracterização Pedológica De Locais De Estudo De Populações Naturais De Castanheira-Do-Brasil No Estado De Mato Grosso

Caracterização Pedológica De Locais De Estudo De Populações Naturais De Castanheira-Do-Brasil No Estado De Mato Grosso

Selenium Deficiency—From Soil to Thyroid Cancer

Effect of maternal dietary supplementation with Brazil nut (Bertholletia excelsa) on the nutritional profile of human milk: randomized controlled trial - rationale, design, and methods

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