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Preparation of beta-carotene nanoemulsion and evaluation of stability at a long storage period 116
MOREIRA,Juliana Botelho; GOULARTE,Pâmela Guder; MORAIS,Michele Greque de; COSTA,Jorge Alberto Vieira.
Abstract Carotenoids have a low solubility in water, and therefore their incorporation in foods is impaired. The nanoemulsions are able to protect these compounds and enhance bioavailability. The objective of this study was to develop nanoemulsions with added beta-carotene, evaluating the influence of process variables and the stability at a long storage period. To assess the effects of these variables a Box-Behnken design was performed. The best condition to form a stable emulsion was 7% (w.w-1) of surfactant and 40 °C. All formulations subjected to a thermal stress test remained stable after the test. The use of a higher concentration of soy lecithin (7%, w.w-1) in the development of emulsions conferred greater stability after a freeze-defrost cycle....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Carotenoids; Macroscopic evaluation; Mean diameter; Nanotechnology.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612019000300599
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Effect of Spirulina addition on the physicochemical and structural properties of extruded snacks 116
LUCAS,Bárbara Franco; MORAIS,Michele Greque de; SANTOS,Thaisa Duarte; COSTA,Jorge Alberto Vieira.
Abstract Nowadays the demand for practical food like snacks increases worldwide, however the nutritional value in most these formulations is reduced. Due to its chemical composition with high protein concentration, the microalga Spirulina has been used on the production of enriched foods. The present study aimed to evaluate the effects of Spirulina sp. LEB 18 addition on snacks formulations and extrusion conditions on the physicochemical and structural properties of snacks. Protein concentration and physical properties such as expansion index, bulk density, hardness, water absorption index, water solubility index and color were determined. The results showed that the addition of Spirulina sp. LEB 18, temperature in the last zone of the extruder and feed...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Extrusion; Microalga; Microstructure; Nutrition; Snack.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612017000700016
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Snack bars enriched with Spirulina for schoolchildren nutrition 116
LUCAS,Bárbara Franco; ROSA,Ana Priscila Centeno da; CARVALHO,Lisiane Fernandes de; MORAIS,Michele Greque de; SANTOS,Thaisa Duarte; COSTA,Jorge Alberto Vieira.
Abstract The aim of this study was to develop snack bars nutritionally enriched with Spirulina and evaluate if there was acceptance of the sensorial attributes by schoolchildren. Snack bars enriched with Spirulina (2% and 6%) and a control formulation (0% Spirulina) were prepared. The samples were evaluated regarding nutritional content, microstructure, and sensorial characteristics. Furthermore, the study of stability during storage (30 days) was carried out. The addition of 2% and 6% of Spirulina provided a protein increase of 11.7% and 29.9%, respectively. The physicochemical and microbiological parameters remained stable during the storage of 30 days. Sensory evaluation showed that snack bars enriched with 6% Spirulina presented no significant...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cereal bars; Microalga; Ready-to-eat food; Sensory evaluation; Stability during storage.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612019005031104
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