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| Registros recuperados: 150 | |
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| Morais, Selene Maia de; Alves, Daniela Ribeiro; Nascimento, José Eranildo Teles do; Cavalcante, Géssica Soares; Vieira-Araújo, Franscisco Marcelo. |
| Current study analyzes the chemical composition of lipids in fish commonly found in the dams of the state of Ceará, Brazil, namely Pterygoplichthys pardalis (bodó), Hoplias malabaricus (traira), Cichla ocellaris (tucunaré), Prochilodus brevis (curimatã) and Oreochomis niloticus (tilapia). The animals were collected during the summer and Folch extraction procedure was used for the extraction of lipids, whilst Iupac methodology (International Union of Pure and Applied Chemistry [Iupac], 1987) was used to methylate the fatty acids. Methyl esters were analyzed by GC/MS and the different components in fish oil were identified. Palmitic acid, C16:0 (35.71-45.02%), was the saturated fatty acid with the highest percentage, while oleic acid, C18:1Δ9 (10.62-25.29%)... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ciências Agrárias freshwater fish; Chemical composition; Fatty acids.. |
| Ano: 2016 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/31014 |
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| Garcia,Jaime; Cozzolino,Daniel. |
| The objective of the study was to evaluate the potential of near infrared reflectance (NIR) spectroscopy as a rapid method to predict the chemical composition of forage in broad-based calibration models. In total, 650 samples representing a wide range of chemical characteristics, phenological states and origins were scanned in an NIR instrument. The coefficient of determination in calibration (R²) and standard error in cross validation (SECV) for the NIR calibration models were as follows: dry matter 0.95 (SECV: 0.7%), crude protein 0.98 (SECV: 0.98%), ash 0.90 (SECV: 0.99%), in vitro organic matter digestibility 0.90 (SECV: 3.6%), acid detergent fiber 0.95 (SECV: 2.0%) and neutral detergent fiber 0.86 (SECV: 5.4%) on a dry matter basis. The results... |
| Tipo: Journal article |
Palavras-chave: Forage quality; NIR; Chemical composition; Near infrared analysis. |
| Ano: 2006 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0365-28072006000100005 |
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| Maciel, Gisele; Wagner, Jorge Ricardo; Juan, Nestor Antonio; San Martino, Silvina; Bartosik, Ricardo. |
| Pairs of soybean seeds and their correspondent expeller samples were collected from ten extrusion-expelling processing plants in Argentina. Seeds were analyzed for proximal composition, bulk moisture content (MC) and individual seed MC. Expeller were analyzed for proximal composition, bulk MC, protein solubility in KOH, expeller urease activity and free fatty acid content. Results indicated that average soybean composition was 136 g/kg MC, 207 g/kg oil and 391g/kg crude protein (CP), while the oil extraction efficiency (OEE) of the process was of 60.7%. The expeller composition was 922 g/kg dry matter (DM), 81g/kg oil and 442 g/kg CP. In soybean seeds, coefficient of variation (CV) of MC was 17.2%, 3.0% for CP and 5.1% for oil, while in SBE CV for DM was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Soybean processing; Extrusion-expelling; Oil extraction efficiency; Chemical composition; Individual seed moisture. |
| Ano: 2020 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/5991 |
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| Ramos-Trejo,O. Santiago; Victoria-Graniel,C. Arturo; Sandoval-Gío,J. José. |
| Pennisetum purpureum has an extended use as forage and further knowledge related to the seasonal influence and fertilization could improve its cultivation. The effects of dry and rainy season and application of fertilizers (200-60-00), on the yield of four varieties of P. purpureum (Taiwan, OM-22, Maralfalfa, CT-115), and a homogeneous mixture of them were evaluated. The study, with four replicates, was conducted at Instituto Nacional de Investigaciones Forestales Agrícolas y Pecuarias, Tizimín, México, and lasted 10 months. Dry matter (DM), crude protein, leaf/stem ratio, stalks per cluster, and plant height, were assessed. Mean values of DM of all treatments in rainy season were significantly different with respect of dry season (36 and 28 t ha-1). Dry... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chemical composition; Dry matter; Tropical forages; King Napier grass; Yield. |
| Ano: 2015 |
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952015000800002 |
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| MONTERO,DANIEL A.V.; MARQUES,MARCIA ORTIZ M.; MELETTI,LAURA M.M.; KAMPEN,MARIA H. VAN; POLOZZI,SANDRA C.. |
| ABSTRACT This study describes for the first time the chemical composition and olfactive description of floral scent from Brazilian Passiflora (Passiflora edulis Sim, Passiflora alata Curtis, Passiflora cincinnata Mast., Passiflora coccinea Aubl. and Passiflora quadrangularis L.). Five species were grown in greenhouse at the Agronomic Institute (IAC), São Paulo, Brazil. Volatile compounds were collected using dynamic headspace. Analyses of scent composition were performed by gas chromatograph coupled to mass spectrometer. Identification of chemical constituents was conducted through of retention index followed by comparative analysis of mass spectra with specialized databases. The olfactive descriptions of floral scent from each species was evaluated for a... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chemical composition; Fragrances; Olfactive description; Passiflora. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652016000401191 |
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| Rodrigues,Jéssica Ferreira; Resende,Lívia Maria Braga; Silva,Luiz Fernando de Oliveira da; Pedroso,Márcio Pozzobon; Pinheiro,Ana Carla Marques; Nunes,Cleiton Antônio. |
| ABSTRACT This study aimed to characterize the volatile composition and sensory characteristics of virgin olive oils (VOOs) from eight olive cultivars grown in the southeast region of Brazil. The volatiles were extracted by Solid Phase Micro Extraction (SPME) and analyzed by Gas Chromatography coupled to MassSpectrometry (GC-MS). The dominant sensory attributes were determined by Temporal Dominance of Sensations (TDS). C5 and C6 alcohols and C6 aldehydes were the most abundant volatiles in the investigated VOOs. E-2-hexenal was among the majorityof volatiles in all investigated olive oils, mainly in VOOs fromcultivars Arbequina, Arbosana and Grappolo 541, in which it had the most of their chromatographic area (about 60-80%). VOOs from cultivars Maria da Fé,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chemical composition; Sensory profile; Solid phase micro extraction; Edible oils. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052019000400479 |
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| Moura Junior,Alfredo Matos; Bezerra Neto,Egídio; Koening,Maria Luise; Leça,Enide Eskinazi. |
| The purpose of this study was to determine the chemical composition of Chaetoceros gracilis, Cylindrotheca closterium and Tetraselmis gracilis, species frequently used as food for aquaculture in the northeast of Brazil. The species were grown in f/2 medium, in carboys, aerated from one liter, with constant illumination and analyses were made in late exponential growth phase. Cellular density (8,447 x 10 6 cell.L-1), soluble carbohydrates (0.10±0.01 mg.L-1) and magnesium (14.78±0.08 mg.L-1) were the highest in C. gracilis. C . closterium had the highest amount of chlorophyll a (13.76±1.11 mg.L-1), soluble proteins (0.62±0.04 mg.L-1), total amino acids (23.82±0.84 mg .L-1), nitrate (0.36±0.02 mg.L-1), sodium (0.46±0.05 mg.L-1) and phosphorus (2.80±0.38... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chaetoceros gracilis; Cylindrotheca closterium; Tetraselmis gracilis; Chemical composition. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132007000300012 |
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| Pinto,Alessandra Teixeira Barbosa; Pereira,Joyce; Oliveira,Tatiana Roselena de; Prestes,Rosilene Aparecida; Mattielo,Rodrigo Rodrigues; Demiate,Ivo Mottin. |
| This work has the objective of characterizing twenty corn landraces grown in the Campos Gerais region (Paraná State) in relation to its chemical composition (moisture, ash, protein, ether extract, dietary fiber and starch) and physical properties (weight of 1000 grains, real density, flotation index, granulometry and color). In addition, also the lab scale processing of the kernels from the varieties was carried out for producing starch; starch purity was evaluated by measuring its protein contamination. Amylose contents and viscoamylograph profile were also evaluated. The results showed that the evaluated landraces have differences in chemical composition as well as in pericarp/endosperm/germ proportions and consequently it should have different... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Maize landraces; Chemical composition; Starch; Physical properties; Rapid viscoanalyzer. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000700003 |
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| Pádua,Márcia de; Fontoura,Paulo Sérgio Growoski; Mathias,Alvaro Luiz. |
| Chemical composition of three species of Chlorophyta, Ulva lactuca, Ulva fasciata and Ulvaria oxysperma, was determined. Ulvaria oxysperma showed humidity (16-20%), ash (17-31% dry-base), proteins (6-10%db), lipids (0.5-3.2%db), fibers (3-12%db) and carbohydrates (46-72%db) which corresponded to 192-270 kcal.100g-1 (wet-base). U lactuca (15-18%db) and U fasciata (13-16%db) revealed grades slightly higher for proteins, but with similar energetic contents (250-272 and 225-239 kcal.100g-1), respectively. Natural blades of U lactuca and of U fasciata were more rigid than blades of U oxysperma. Other native algae showed higher protein levels. Ulvaria sp could be cultivated on the cotton-nylon net without having significance competition from other algae or... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chemical composition; Algae; Ulvaria; Ulva; Guaraqueçaba; Ilha do Mel. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132004000100007 |
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| Shimizu,Mario Tsunezi; Bueno,Leandro de Jesus Franco; Rodrigues,Rosa Fátima Oliveira; Sallowicz,Fabiano Augusto; Sawaya,Alexandra Christine Helena Frankland; Marques,Márcia Ortiz Maio. |
| Lithraea molleoides (Vell.) (Anacardiaceae) is a tree found in Brazil, Paraguay, Bolivia, Uruguay, Argentina and Chile. It is popularly used in the form of alcoholic extracts, decoctions and infusions for the treatment of cough, bronchitis, arthritis, diseases of the digestive system and as diuretic, tranquilizer, haemostatic and tonic agent. The objectives of this study were the extraction of the essential oil of the mature fruit, leaves and aerial parts of the plant and quantification of the yield thereof; the identification and quantification of the principal components of the essential oil and the determination of its antimicrobial activity against bacteria and yeast. The essential oil yield of the mature fruits was 1.0% but essential oil was not... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lithraea molleoides; Essential oil; Chemical composition; Antimicrobial activity. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822006000400028 |
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| Valderrama L.,Ximena; Anrique G.,René. |
| The present study was conducted to evaluate the nutritional value and in situ degradation kinetics of eight high protein forage crops: alfalfa (Medicago sativa L.), forage oat (Avena sativa L.), mixed pasture, and ryegrass (Lolium multiflorum Lam.) pasture in early vegetative stages, two forage lupins (Lupinus albus L.) in early bloom stages, sugar beet (Beta vulgaris L.) and kale (Brassica napus var. pabularia (DC.) Rchb.) leaves at root maturity. Dry matter (DM) and crude protein (CP) degradation kinetics were evaluated by the nylon bag technique through the in situ procedure described by 0rskov and MacDonald (1979) using three ruminally cannulated sheep. Chemical composition of the forage crops showed on average 13.7% DM; 21.4% CP; 31.5% neutral... |
| Tipo: Journal article |
Palavras-chave: Rumen; Forage; Rate of passage; Chemical composition; Degradability. |
| Ano: 2011 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392011000400012 |
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| Ulger,Ismail; Kamalak,Adem; Kurt,Ozer; Kaya,Emrah; Guven,Inan. |
| The aim of the present study was to compare the leaves of Liquidambar orientalis with the leaves of Laurus nobilis and Eucalyptus globulus in terms of their chemical composition and anti-methanogenic potential using an in vitro gas production technique. Species had a significant effect on the chemical composition, gas production, methane production, metabolizable energy and organic matter digestibility of the tree leaves. The crude protein (CP), neutral detergent fiber (NDF), acid detergent fiber (ADF) and condensed tannin (CT) contents of the tree leaves ranged from 9.11 to 12.8, 22.49 to 35.85, 32.76 to 49.31, and 1.55 to 9.29%, respectively. The gas production, methane production, metabolizable energy (ME) and organic matter digestibility (OMD) ranged... |
| Tipo: Journal article |
Palavras-chave: Anti-methanogenic potential; Chemical composition; Digestibility; L. orientalis leaves; Metabolizable energy. |
| Ano: 2017 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202017000100008 |
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| Fernandes,Vitória Regina Takeuchi; Souza,Maria Luiza Rodrigues de; Gasparino,Eliane; Coutinho,Marcos Eduardo; Visentainer,Jesuí Vergílio; Bérgamo,Alessandro Spinola; Goes,Elenice Souza dos Reis. |
| ABSTRACT: This study evaluated the yield, color, and chemical composition of commercial cuts (tail, sirloin cut, back fillet, and thigh) of Pantanal caiman meat in both sexes. The yield of tail was higher than other cuts, and the yield of females (17.0%) was higher than males (15.9%). The thigh of males had lower protein content (20.8%) compared with other cuts. Females showed a higher lipid content in the tail (2.4%) and thigh (0.8%) compared with males (1.7% and 0.4%, respectively). The tail presented the greatest content of monounsaturated fatty acids (45.2%) and higher n6/n3 ratio (4.6). Although lightness was not different among cuts or between sexes, there were differences in color. Males have more yellowish meat compared with females. Thigh and back... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Caiman crocodilus yacare; Yield; Chemical composition; Colorimetry. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000200931 |
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| Registros recuperados: 150 | |
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