Caracterização química parcial da semente de jatobá-do-cerrado (Hymenaea stigonocarpa Mart.)

Abstract

A quem a correspondência deve ser enviada. CARACTERIZAÇÃO QUÍMICA PARCIAL DA SEMENTE DE JATOBÁ-DO-CERRADO ( Mart.) Hymenaea stigonocarpa 1 Tatiana G. MATUDA ; Flavia MARIA NETTO 2 2 , * RESUMOEste trabalho teve como objetivo a caracterização química parcial da semente de jatobá-do-cerrado ( Mart.), a fim de avaliar o potencial de aproveitamento desta espécie e contribuir para a preservação de espécies nativas do cerrado, através da valorização de seus recursos naturais. A semente apresentou alto teor de fibras (85,31%), 9,05% de proteínas e 5,30% de lipídios (base seca). A análise de aminoácidos mostrou que a proteína, como outras leguminosas, tem os aminoácidos sulfurados e a treonina como aminoácidos limitantes. A fração lipídica apresentou 75% de ácidos graxos insaturados, sendo o ácido linoléico dominante (46,9%). Dentre os fatores antinutricionais estudados, os compostos fenólicos, com 48mg/g de farinha de jatobá desengordurada (base seca), mostraram teor acima do encontrado em outras leguminosas. A semente de jatobá mostrou-se pobre em macronutrinentes quando comparada a leguminosas utilizadas na alimentação, mas o alto teor de fibras, possivelmente constituídas de xiloglucanas e galactomananas, pode levar ao aproveitamento rentável destas sementes. jatobá; Mart.; leguminosas; sementes; composição química. Hymenaea stigonocarpaHymenaea stigonocarpa Palavras-chave: SUMMARY PARTIAL CHEMICAL CHARACTERIZATION OF JATOBÁ-DO-CERRADO SEEDS ( Mart.). The objective of this work was the partial chemical characterization of the jatobá-do-cerrado ( Mart.) seed in order to evaluate the potential value as a food and/or feed source and to contribute to the preservation of Brazilian native species from "cerrado" through valorization of its natural resources. Jatobá-do-cerrado seeds had a high crude fiber content (85.31%), 9.05% of crude protein and 5.30% of total lipids (dry basis). Amino acids analysis showed that protein was deficient in sulfur amino acids and treonin and high in other essential amino acids. Lipid fraction showed 75% of unsaturated fatty acid and linoleic acid was dominant (46.9%). Amongst the studied antinutritional factors, total phenolics (48mg/Êg of defatted flour, dry basis)) was higher than in other leguminous seeds. However, despite the fact that this seed showed lower macronutrients content than other legume seeds used as human food, the high fiber content, possibly composed of xiloglucanns and galactomananns could lead to an interesting use of these seeds. Hymenaea stigonocarpa Hymenaea stigonocarpa

Chemical and nutritional evaluation of kernels of bocaiuva, Acrocomia aculeata (Jacq.) Lodd.

“…In comparison to fruit from the cerrado, the jatobá-do-cerrado (Hymenaea stigonocarpa Mart.) seed showed that protein was deficient in sulphur amino acids and threonine and rich in other essential amino acids [21].…”

“…Table 1 shows the results of the proximate analysis of kernels. The kernels were found to have high protein content (17.6%), as compared to some cerrado fruit kernels and other palmtree species [3,21]. Furthermore, they showed quite high lipid content (51.7%).…”

“…Studies have been conducted with the purpose of supplying information that can promote commercial sales of such species and their larger use by the local population as supplementary sources of essential nutrients [14,21,27].…”

Perfil De Ácidos Graxos De Folhas E Amêndoas Orgânicas De Guariroba

“…11,75 nd -não disponível Os teores de ácido oléico e linoleico presentes nas folhas foram quase três vezes e oito vezes superiores aos presentes em amêndoas, respectivamente (Tabela 1). O ácido oléico é monoinsaturado e considerado majoritário na composição de vários óleos, como: canola (59,88-60,85%), baru (50,4%), oliva (57,10-59,90%), milho (34,44-35,68%), jatobá (31,4%) girassol (18,44-28,10%) (Takemoto et al, 2001;Matuda & Maria Netto, 2005;Aued-Pimentel et al, 2009;Melo & Pinheiro, 2012). Já o ácido linoleico é poliinsaturado e considerado um ácido essencial na dieta devido à participação na biossíntese de Omega-3.…”

Partial purification of trypsin/papain inhibitors from Hymenaea courbaril L. seeds and antibacterial effect of protein fractions

“…Although the seeds contain about 10% protein, research into their chemical constituents has emphasized that carbohydrates, mainly xyloglucans, are abundant in this plant. Furthermore, proteases, peroxidases and trypsin inhibition activities have been identified in protein-rich extracts from its seeds (Caramori et al 2004, Matuda & Netto 2005. However, detailed information on the isolation and characterization of these molecules is still sparse, and to our knowledge, to date only one β-galactosidase has been purified from seeds of this species, which appears to be involved in the mobilization of xyloglucans during seed germination (Alcântara et al 2006).…”