Epiderme dos segmentos foliares de Mauritia flexuosa L. f. (Arecaceae) em três fases de desenvolvimento

Passos, Mahedy Araujo Bastos; Mendonça, Maria Sílvia de

doi:10.1590/s0044-59672006000400005

Cited by 27 publications

(21 citation statements)

References 4 publications

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“…Uzzo (2008) analyzing the leaves of king palm noticed that they are hypostomatic, so present only in the lower epidermis, arranged in discrete rows with irregular distribution. According to Passos and Mendonça (2006) tetracytic stomata, formed by a pair of guard cells, a pair of subsidiary cells parallel, and with ends containing two further subsidiary cells, polar, smaller and rounded, is commonly found in palms. Around the stomata it was observed the presence of wax crystals ( Figure 2G).…”

Section: Resultsmentioning

confidence: 99%

Peach Palm (Bactris gasipaes kunth) Characterization and the Potential of by-Products Flour Processing

Barros

Danesi

Beléia

2013

FSTR

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The peach palm cultivated for the industrial canning of heart-of-palm has different portions whose utilization can be maximized. The aim of this work was to evaluate the composition and structure of all portions of peach palm rod and to investigate the possible utilization of the by-products for flours processing. The central edible portion had the highest content of protein, fat, starch and the lowest level of dietary fiber. The highest content of oxalic acid was found in the shell. The tissue is formed by fibrous elements, xylem and phloem vessels, amiloplasts and calcium oxalates in druses and raphides. Although the oxidative enzymes of by-products were inactivated during drying at 90℃ for 36 h, the color parameter indicated that the flours should be dried at 60℃. The median sheath flour had a lower content of oxalic acid and tannins than the stem flour, but similar content of phytic acid.

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Section: Resultsmentioning

confidence: 99%

Peach Palm (Bactris gasipaes kunth) Characterization and the Potential of by-Products Flour Processing

Barros

Danesi

Beléia

2013

FSTR

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“…The chemical composition of the Arecaceae plants includes: diterpenes, triterpenes and their methyl esters, steroids (including brassinosteroids), proantocianidines, fl avonoids (derived from kaempferol, quercetin, tricin and luteolin), saponins and rarely alkaloids (pirimidinics) (Piozzi et al, 1981;Harborne et al, 1994;Holdsworth et al, 1997;El Dib et al, 2004). The species Mauritia fl exuosa L. f., popularly named buriti or miriti, is a large palm tree distributed throughout the Amazon region (Passos & Mendonça, 2006). While this palm is found in several vegetal formations, it is achieved more commonly growing up in fl ooded areas forming typical homogeneous groups (Ruiz & Alencar, 2004).…”

Section: Introductionmentioning

confidence: 99%

“…This species has high economic potential, due mainly to its fruits that have valuable oil for the cosmetic industries (França et al, 1999). The oil extracted from the buriti fruits is popularly used against burns and as a potent vermifuge (Passos & Mendonça, 2006), and those activities are attributed principally to the carotenoids and the ascorbic acid, principal compounds in the oil (França et al, 1999). The buriti fruit showed also previously moderate antimicrobial activity against several bacteria (Silveira et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

Triterpenes and flavonoids from the roots of Mauritia flexuosa

Koolen¹,

Soares²,

Silva³

et al. 2012

Rev. bras. farmacogn.

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Mauritia flexuosa L. f., Arecaceae, is an endemic species of South America. This species was studied with the intent to isolate the constituents of its roots. After the fractionation of the n-hexane and methanolic extracts from the roots of M. flexuosa, six triterpenes were obtained: friedelin, taraxerone, lupenyl acetate, lupenone, betulin and betulinic acid, along with three flavonoids: rutin, quercitrin and quercetin. All the compounds were identified by analysis of NMR and MS data and comparison with the literature. All those compounds are been reported for the first time in Mauritia, and the chemosystematic significance of the flavonoids isolated in this genus is discussed.

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“…Especifi camente em anatomia, Passos & Mendonça (2006) caracterizaram a epiderme foliar de Mauritia fl exuosa L. f. e Mendonça et al (2008) …”

Section: Introductionunclassified

Aspectos anatômicos do embrião e desenvolvimento inicial de Oenocarpus minor Mart: uma palmeira da Amazônia

2010

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RESUMO -(Aspectos anatômicos do embrião e desenvolvimento inicial de Oenocarpus minor Mart.: Uma palmeira da Amazônia). Neste trabalho foi feita a anatomia do embrião e a fase inicial da germinação da semente de O. minor. Frutos maduros de cinco indivíduos foram despolpados e as sementes obtidas foram semeadas em canteiros contendo substrato areia em casa de vegetação com sombreamento a 50%. O acompanhamento da germinação foi feito através de coletas das diferentes fases do desenvolvimento. O estudo anatômico foi realizado conforme técnicas usuais de microscopia de luz. O embrião é capitado. O eixo embrionário localiza-se na região proximal em posição oblíqua ao eixo cotiledonar. O cotilédone é formado por tecido parenquimático, procambial e protodérmico. Os feixes vasculares ocorrem ao longo da zona periférica da região distal até ao eixo embrionário. Aos 14 dias é emitida a raiz primária. Aos 21 dias forma-se a primeira bainha cotiledonar e aos 35 dias a segunda bainha cotiledonar ocorrendo à emergência da plântula acima do substrato. A germinação é do tipo adjacente ligular. Palavras-chave: anatomia, Arecaceae, bacabinha, germinação ABSTRACT -(Anatomical aspects of the embryo and initial development of Oenocarpus minor Mart.: a palm tree from the Amazon). The anatomy of the embryo and the initial germination phase of O. minor seeds are examined here. Ripe fruits were collected from fi ve individuals, the pulp removed, and the seeds sown in beds with sandy substrate in a greenhouse with 50% shade. Germination follow-up was made by collecting different stages of development. The anatomical study done according to usual techniques of light microscopy. The embryo is capitate and occupies a central position in the basal region of the seed. The embryogenic axis is located in the proximal region in a position that is oblique to the cotyledon axis. The cotyledon is formed by parenchymatous, procambial and protodermic tissue. The vascular bundles lie along the peripheral zone of the distal region to the embryogenicaxis. After 14 days, the primary rootemerges; after 21 days, the fi rst cotyledon sheath and after 35 days, the second cotyledon sheath, and the seedling emerges above the substrate. Germination is of the ligule adjacent type.

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Epiderme dos segmentos foliares de Mauritia flexuosa L. f. (Arecaceae) em três fases de desenvolvimento

Cited by 27 publications

References 4 publications

Peach Palm (Bactris gasipaes kunth) Characterization and the Potential of by-Products Flour Processing

Peach Palm (Bactris gasipaes kunth) Characterization and the Potential of by-Products Flour Processing

Triterpenes and flavonoids from the roots of Mauritia flexuosa

Aspectos anatômicos do embrião e desenvolvimento inicial de Oenocarpus minor Mart: uma palmeira da Amazônia

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