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Analysis of volatile compounds of Ilex paraguariensis A. St. - Hil. and its main adulterating species Ilex theizans Mart. ex Reissek and Ilex dumosa Reissek Ciência e Agrotecnologia
Dallago,Rogério Marcos; Valduga,Alice Teresa; Luccio,Marco Di; Benin,Silvane; Tres,Marcus Vinícius.
The adulteration of the product Ilex paraguariensis with other Ilex species is a mAjor problem for maté tea producers. In this work, three species of Ilex were evaluated for their volatile composition by headspace solid phase microextraction coupled to gas chromatography and mass spectrum detector (HS-SPME/GC-MS). The adulterating species I. dumnosa and I. theizans Mart. ex Reissek presented a different profile of volatile organic compounds when compared to I. paraguariensis. Aldehydes methyl-butanal, pentanal, hexanal, heptanal and nonanal were detected only in the adulterating species. This result suggests that such compounds are potential chemical markers for identification of adulteration and quality analysis of products based on Ilex paraguariensis.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Food analysis; Food composition.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542011000600017
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Breeding Quality Protein Maize (QPM): Protocols for Developing QPM Cultivars AgEcon
Vivek, B.S.; Krivanek, A.F.; Palacios-Rojas, N.; Twumasi-Afriyie, S.; Diallo, Alpha O..
This manual is intended for maize breeders who would like to start developing quality protein maize (QPM) cultivars. It is a compilation and consolidation of several breeding protocols successfully used at CIMMYT over two decades of QPM development and breeding. A brief background and the basic theory of QPM genetics are explained, leading up to detailed methods and procedures of QPM development.
Tipo: Report Palavras-chave: Zea mays; Plant breeding; Breeding methods; Genetic resources; Protein quality; Protein content; Application methods; Lysine; Tryptophan; Food composition; Crop Production/Industries; F30; Q04.
Ano: 2008 URL: http://purl.umn.edu/56179
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Etude de la croissance du naissain d'huitres (Crassostrea gigas, Ostrea edulis) de la métamorphose à la taille de 1 mm. en fonction de différentes nourritures phytoplanctoniques. ArchiMer
Le Borgne, Y; Diss-mengus, B; Marin, J.
Introduction: Among the problems found in mollusc hatcheries, the feeding of growing post larvae is of primary concern. It is therefore essential to reach algal production rationalisation through precise knowledge of the nutritional requirements of the different species of spat produced, and this for a diversity of size classes. Many authors, such as HARTMAN and EPIFANIO (1973), PRUDER and al. (1976), have attempted to establish appropriate food rations in laboratory for various post larvae mollusks according to their average weight. However, it is difficult to adapt those results to hatchery experiments, since raising conditions and yield issues are totally different. The purpose of this work is to determine nutritional rations required for different post...
Tipo: Text Palavras-chave: Crassostrea gigas; Ostrea edulis; Artificial feeding; Oyster culture; Food composition.
Ano: 1978 URL: http://archimer.ifremer.fr/doc/1978/rapport-1758.pdf
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Flaxseed flour addition on fatty acid profile and sensory properties of brazilian cheese roll Ciência e Agrotecnologia
Costa,Alessandra; Baraúna,Ana Carolina; Bertin,Renata Labronici; Tavares,Lorena Benathar Ballod.
In recent decades, studies on human nutrition have emphasized the importance of omega-3 and 6 intake. Since flaxseed is a good source for such fatty acids, the aim of this study was to develop a Brazilian cheese roll enriched with flaxseed flour. Three formulations were produced to determine the intensity of some sensory attributes and to set the best composition for conducting a consumer acceptance test. In the selected formulation, it was determined the Brazilian cheese roll's expansion rate, its physico-chemical characteristics, fatty acid composition and acceptance rate. Regarding its flavor and general characteristics, the results showed a good acceptance of the cheese roll enriched with flaxseed flour. The product also presented an omega-6/omega-3...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Sensory evaluation; Food analysis; Food composition; Omega-3; Functional food.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542012000400007
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L-ascorbic acid, β-carotene and lycopene content in papaya fruits (Carica papaya) with or without physiological skin freckles Scientia Agricola
Souza,Leandro Marelli de; Ferreira,Karla Silva; Chaves,José Benício Paes; Teixeira,Sílvio Lopes.
The Skin Freckles is a papaya skin disorder that depreciates de fruit appearance and hampers its commercialization, although not lowering its nutritive value. Being the papaya a good source of ascorbic acid, β-carotene and licopene this research aimed at determining L-ascorbic acid, β-carotene and licopene content in papaya fruits, from 'Formosa' and 'Solo' group varieties, with and without apparent physiological skin disease (skin freckles). Fruits were harvested in the Southeast Region of Brazil. L-ascorbic acid content was determined by titration technique. β-carotene and licopene contents were determined by high performance liquid chromatography technique (HPLC). L-ascorbic acid content in papaya fruits ranged from (59.9 ± 3.4) mg 100 g-1 to (112.4 ±...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Brazil; Fruits composition; Carotenoids; Vitamin C; Food composition.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162008000300004
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Mineral composition, nutritional properties, total phenolics and flavonoids compounds of the atemoya fruit (Annona squamosa L. x Annona cherimola Mill.) and evaluation using multivariate analysis techniques Anais da ABC (AABC)
SANTOS,WALTER N.L. DOS; SAUTHIER,MARIA CELESTE S.; CAVALCANTE,DANNUZA D.; BENEVIDES,CLÍCIA M.J.; DIAS,FÁBIO S.; SANTOS,DANIELE C.M.B..
ABSTRACT The atemoya is a hybrid fruit obtained by crossing of cherimoya (Annona cherimola Mill.) with sweet sop (Annona squamosa L.). The information about chemical composition of atemoya is scarce. The mineral composition was evaluated employing Inductively Coupled Plasma Optical Emission Spectrometry (ICP OES) and the centesimal composition and the physico-chemical parameters were assessed employing procedures described in the AOAC methods. The total phenolic compounds (TPC) and total flavonoids (TF) were determined using spectroanalytical methods. Considering the Reference Daily Intake (RDI), the concentrations of K, Cu and Vitamin C found in atemoya were the highest, representing about 32, 23 and 37% of the RDI, respectively. The total carbohydrates...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Atemoya; Food composition; ICP OES; Flavonoids; Phenolics.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652016000401243
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VIS/NIR spectral signature for the Identification of Peanut Contamination of Powder Foods CIGR Journal
Ghosh, Satyabrata; Domínguez, Teresa R. Cuadrado; Diezma, Belén; Lleó, Lourdes; Barreiro, Pilar; Lacarra, Teresa García; Roger, Jean-Michel.
Visible-Near Infrared reflectance spectra are proposed for the characterization IRMM 481 peanuts in comparison to powder food materials: wheat flour, milk and cocoa. Multidimensional analysis of spectra of powder samples shows a specific NIR band centred at 1200 nm that identifies peanut compared to the rest of food ingredients, regardless compaction level and temperature. Spectral range 400-1000 nm is not robust for identification of blanched peanut. The visible range has shown to be reliable for the identification of pre-treatment and processing of unknown commercial peanut samples. A spectral index is proposed based on the combination of three wavelengths around 1200 nm that is 100% robust against pre-treatment (raw or blanched) and roasting (various...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Adulterant; Food analysis; Food composition; Food quality; Allergen; PCA; Spectroscopy.
Ano: 2015 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3216
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Vitamin K: content in food consumed in São Paulo, Brazil BJPS
Faria,Simone Aparecida dos Santos Conceição; Arruda,Vanilda Aparecida Soares de; Araújo,Elias da Silva; Penteado,Marilene De Vuono Camargo.
ABSTRACT Recent research on Vitamin K has shown its importance in maintaining vascular and bone health. Brazilian food composition tables do not show phylloquinone content in national foods. These data are needed to obtain more reliable results in nutritional status assessment studies of individuals in relation to this vitamin as studies have shown a geographical influence in food phylloquinone content. This study aims to determine phylloquinone (Vitamin K1) levels in its most important source: dark green leaved vegetables. Several varieties of vegetables were purchased directly from CEAGESP (General Warehouse Company of São Paulo) at different times. Phylloquinone was extracted using organic solvents and quantified by High Performance Liquid...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Phylloquinone/determination/leaf vegetables; Food composition; High Performance Liquid Chromatography; Vitamin K/study/Brazil; Cooking/Loss.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502017000200603
Registros recuperados: 8
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