Embrapa Agroindustria Tropical CNPAT

Fortaleza, Brazil

Embrapa Agroindustria Tropical CNPAT

Fortaleza, Brazil

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Loges V.,Federal Rural University of Pernambuco | de Castro C.E.F.,Instituto Agronomico IAC | de Castro A.C.R.,Federal Rural University of Pernambuco | Goncalves C.,Embrapa Agroindustria Tropical CNPAT
Ornamental Horticulture | Year: 2016

The Heliconia species with pendent inflorescences and colorful bracts is a good option for landscaping in tropical gardens and cut flowers market. In Brazil only a few species of Heliconia are commercially produced eg. H. rostrata, H. rauliniana and H. chartacea. Aiming to increase the use of outstanding native plants and the knowledge of these products for enthusiasts of tropical flowers, this work was carried out to characterize H. chartacea, H. collinsiana, H. magnifica, H. pendula, H. platystachys, H. pogonantha, H. rostrata, H. rauliniana and H. vellerigera for use in landscaping and as cut flower. The evaluations were performed on plants belonging to the Germplasm Collection of the Instituto Agronomico (IAC), in Ubatuba Unit of Research and Development, located in Ubatuba, Sao Paulo State, growing in partial shade conditions. Qualitative and quantitative characteristics related to clump and flower stem aspects were analyzed. A point scoring system was used to determine the species most suitable as landscape plant or as cut flower. The plant height range from 2.3 (H. rostrata) to 7.0 m (H. pogonantha), having inflorescence with vibrant and different colors, varying between yellow, orange, red, pink, green and two color combinations. The inflorescences from most of the species were visible in the clump and remain in good conditions for two (H. platystachys) to five months (H. magnifica, H. rostrata and H. pogonantha) and present six (H. platystachys and H. pendula) to 40 (H. pogonantha) open bracts. White wax in leaves or inflorescences were observed in H. collinsiana, H. chartacea, H. pendula and H. platystachys. On the other hand, H. magnifica, H. rostrata, H. pogonantha and H. vellerigera exhibit a hairy surface, pubescent to lanuginose. The postharvest durability longer than 10 days was observed only in H. platystachys, H. rostrata, H. chartacea, and H. rauliniana. This characterization and scoring system were important to indicate and diversify heliconia use for landscaping and cut flower.


Nunes E.W.L.P.,Rural University | Preston H.A.P.,Rural University | Dovale J.C.,Federal University of Ceará | Aragao F.A.S.D.,Embrapa Agroindustria Tropical CNPAT | And 2 more authors.
Crop Breeding and Applied Biotechnology | Year: 2015

The aim of this study was to identify sources of resistance to Myrothecium roridum and Podosphaeria xanthii. Initially, 86 inbred lines of the crossing AM-04 x Goldex, 91 inbred lines of the crossing AM-12 x Rochedo, and 75 inbred lines of the crossing ACP x AF-646 were evaluated. The trials were carried out in a greenhouse in a randomized block design with five replications. Seventeen inbred lines were identified as resistant to M. roridum. These inbred lines, as well as the parents and seven differential cultivars (checks) were evaluated for the reaction to P. xanthii. Ten inbred lines were selected as moderately resistant to M. roridum and resistant to P. xanthii. © 2015, Brazilian Society of Plant Breeding. All right reserved.


Nascimento D.M.,Federal University of Ceará | Almeida J.S.,State University of Ceará | Dias A.F.,Instituto Federal Of Educacao | Figueiredo M.C.B.,Embrapa Agroindustria Tropical CNPAT | And 3 more authors.
Carbohydrate Polymers | Year: 2014

The aim of this work was to optimize the extraction of cellulose nanowhiskers (CNW) from unripe coconut husk fibers (CHF). The CHF was delignified using organosolv process, followed by alkaline bleaching (5% (w/w) H2O2 + 4% (w/w) NaOH; 50 °C, 90 min). The CHF was subsequently hydrolyzed with 30% (v/v) sulfuric acid (60°C, 360 min). The process yielded a partially delignified acetosolv cellulose pulp and acetic black liquor, from which the lignin was recovered. The CNW from the acetosolv pulp exhibited an average length of 172 ± 88 nm and a diameter of 8 ± 3 nm, (aspect ratio of 22 ± 8). The surface charge of the CNW was -33 mV, indicating a stable aqueous colloidal suspension. The nanocrystals presented physical characteristics close to those extracted from cellulose pulp made by CHF chlorine-pulping. This approach offers the additional advantage of extracting the lignin as an alternative to eradication. © 2014 Elsevier Ltd.


De Souza G.R.B.,São Paulo State University | Merida D.,São Paulo State University | De Castro C.E.F.,Instituto Agronomico IAC | De Castro A.C.R.,Embrapa Agroindustria Tropical CNPAT | And 2 more authors.
Acta Horticulturae | Year: 2013

Costus stenophyllus or bamboo costus, despite its high ornamental potential, is still little known in the cut flower and ornamental plant market. The bamboo costus is a spiral ginger admired for its beautiful stems that are lined with brown colored alternating bands. This costus has rather straight and upright stems. Conical red inflorescences, which resemble the head of a snake, emerge from the base of the plants. The flowers are light yellow and emerge between the red scales on the rather long-lasting, attractive inflorescences. This study was carried out to evaluate the possibility of using these species as a garden plant, cut flower and cut stem. Thus, the characterization was made based on 28 characters of the plant, the leaves, the flower stem, the flowers, as well as season blooming characteristics and flower postharvest longevity.


Barguil B.M.,Fundacao Cearense de Apoio ao Desenvolvimento Cientifico e Tecnologico FUNCAP | Viana F.M.P.,Embrapa Agroindustria Tropical CNPAT | Mosca J.L.,Embrapa Agroindustria Tropical CNPAT
Ciencia Rural | Year: 2010

The quality of the rose's floral stem can be affected by numerous faults as small button or diseases and injuries. This study aimed to evaluate the morphological (length and rightness of stem and rose bud) and fitossanitary (downy mildew, powdery mildew, gray mold and caterpillar damage) characteristics in seven varieties of rose grown in a greenhouse. The characteristics were analyzed three times. The average length of floral stems ranged from 56.1 to 83.3cm, while the average length of buttons ranged from 4.7 to 5.2cm in the varieties evaluated. Symptoms of downy mildew, powdery mildew, gray mold and damage caused by caterpillar were observed, although powdery mildew were the main problem witch affect from 2,9 to 41,3% of floral stems. About 70% of the stems of all varieties showed characteristics of type C or D during the classification stage. These results reinforce the necessity of evaluating new varieties before the implementation of commercial cultivation.


Pereira A.L.S.,Federal University of Ceará | Nascimento D.M.D.,Federal University of Ceará | Souza Filho M.D.S.M.,Embrapa Agroindustria Tropical CNPAT | Morais J.P.S.,Embrapa Algodao CNPA | And 4 more authors.
Carbohydrate Polymers | Year: 2014

Cellulose nanocrystals (CNCs) isolated from banana pseudostems fibers (BPF) of the Pacovan variety were used as fillers in a polyvinyl alcohol (PVOH) matrix to yield a nanocomposite. The fibers from the external fractions of the BPF were alkaline bleached and hydrolyzed under acidic conditions (H 2SO4 62% w/w, 70 min, 45 °C) to obtain CNCs with a length (L) of 135.0 ± 12.0 nm and a diameter (D) of 7.2 ± 1.9 nm to yield an aspect ratio (L/D) of 21.2. The CNCs were applied to PVOH films at different concentrations (0%, 1%, 3%, and 5% w/w, dry basis). With higher concentrations of CNCs, the water-vapor barrier of the films increased, while the optical properties changed very little. Increasing the concentration of the CNCs up to 3% significantly improved the mechanical properties of the nanocomposite. © 2014 Elsevier Ltd.


Braun U.,Martin Luther University of Halle Wittenberg | Oliveira Freire F.D.C.,Embrapa Agroindustria Tropical CNPAT | Urtiaga R.,Apartado 546
Polish Botanical Journal | Year: 2010

Four new species of cercosporoid hyphomycetes are described: Passalora majewskii U. Braun & F. O. Freire on Sparattanthelium botocudorum Mart, and Pseudocercospora avicenniicola U. Braun & F. O. Freire on Avicennia geminans (L.) Stern, (both from Brazil), P. hilliana U. Braun on Helmholtzia glaberrima (Hook, f.) Caruel from New Zealand, and P. ureraeU. Braun & R. Urtiaga on Urera baccifera (L.) Gaudich. ex Wedd. from Venezuela. New records are given for Cercospora apii Fresen. s.l. on the new host Helmholtzia glaberrima in New Zealand, C. caleifolii Bat., J. Upadhyay & Netto on Calea sp. new to Venezuela, Pseudocercospora namae (Deam. & House) U. Braun & Crous new to Brazil on the new host Hydroleaspinosa L., and P. struthanthi Braun, F. O. Freire & N. Pons in Brazil on the new host Tripodanthus sp. The nomenclature of several species from Brazil, New Zealand and Venezuelapreviously assigned to Stenella Syd. is reassessed, and those species are reallocated to Zasmidium Fr.


Pereira A.L.S.,Federal University of Ceará | do Nascimento D.M.,Federal University of Ceará | Souza M.S.M.,Embrapa Agroindustria Tropical CNPAT | Cassales A.R.,Embrapa Agroindustria Tropical CNPAT | And 4 more authors.
BioResources | Year: 2014

Agricultural residues represent a disposal problem and a biomass source for chemical production. Lignocellulosic composition varies in plants as a function of several factors such as physiological age and tissue function. Banana pseudostem is a large biomass resource that is usually wasted, in spite of the possibility that it can be used as a source of organic compounds such as cellulose and hemicelluloses. The aim of this paper is compare the lignocellulosic content and physicochemical properties of different sheaths of Pacovan banana pseudostems. The trunk was divided into four different fractions, from the outermost sheaths to the core of the structure. There was a significant difference between the lignocellulosic compositions of the fractions. The X-ray diffraction, Fourier transform infrared spectroscopy, thermogravimetric analysis, and differential scanning calorimetry measurements reflected this difference in the sheaths. These results indicate that the Pacovan banana pseudostem cannot be considered to be a uniform biomass, and future approaches to its use as a biorefinery feedstock must consider a preliminary separation of the sheaths prior to chemical extraction of organic components.


PubMed | Embrapa Agroindustria Tropical CNPAT, Federal University of Ceará, Embrapa Algodao CNPA and Embrapa Agroindustria de Alimentos
Type: | Journal: Carbohydrate polymers | Year: 2014

Cellulose nanocrystals (CNCs) isolated from banana pseudostems fibers (BPF) of the Pacovan variety were used as fillers in a polyvinyl alcohol (PVOH) matrix to yield a nanocomposite. The fibers from the external fractions of the BPF were alkaline bleached and hydrolyzed under acidic conditions (H2SO4 62% w/w, 70 min, 45 C) to obtain CNCs with a length (L) of 135.0 12.0 nm and a diameter (D) of 7.2 1.9 nm to yield an aspect ratio (L/D) of 21.2. The CNCs were applied to PVOH films at different concentrations (0%, 1%, 3%, and 5% w/w, dry basis). With higher concentrations of CNCs, the water-vapor barrier of the films increased, while the optical properties changed very little. Increasing the concentration of the CNCs up to 3% significantly improved the mechanical properties of the nanocomposite.

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