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Registros recuperados: 83
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Encapsulation of Lactobacillus acidophilus La-5 and Bifidobacterium Bb-12 by spray drying and evaluation of its resistance in simulated gastrointestinal conditions, thermal treatments and storage conditions Ciência Rural
Nunes,Graciele Lorenzoni; Motta,Mariana Heldt; Cichoski,Alexandre José; Wagner,Roger; Muller,Édson Irineu; Codevilla,Cristiane Franco; Silva,Cristiane de Bona da; Menezes,Cristiano Ragagnin de.
ABSTRACT: Lactobacillus acidophillus La-5 (ML) and Bifidobacterium Bb-12 (MB) microparticles were produced at different temperatures by spray dryer. The influence of different temperatures on the viability, encapsulation efficiency, water activity and moisture were evaluated. Microparticles that presented more viability were submitted to thermal resistance, gastrointestinal simulation, storage stability, morphology and particle size analyses. Drying temperature of 130°C showed higher encapsulation efficiency, 84.61 and 79.73% for Lactobacillus acidophillus (ML) and Bifidobacterium Bb-12 (MB) microparticles, respectively. In the evaluation of thermal resistance and gastrointestinal simulation, the microparticles of Lactobacillus acidophillus La-5 (ML)...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Spray dryer; Viability; Probiotics.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018000600751
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Suitability of the tetrazolium test methodology for recently harvested and stored coffee seeds Ciência e Agrotecnologia
Clemente,Aline da Consolação Sampaio; Carvalho,Maria Laene Moreira de; Guimarães,Renato Mendes.
Germination of coffee seeds occurs in a slow and non-uniform manner and the tetrazolium test (TZ) may be a quick alternative for assessment of viability, as long as the preparation and imbibition of the seeds is established. This study was performed in two stages: in the first, recently harvested seeds from three coffee cultivars were submitted to four methodologies for removal of the parchment: manual extraction or use of sodium hypochlorite (NaClO at 5%) and two periods of imbibition of the seeds in water (36 and 48 hours) for removal of the embryos. In the second phase, manual removal and the use of NaClO were compared for elimination of the parchment of stored seeds for monthly performance of the tetrazolium test for six months. Sodium hypochlorite is...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Coffea arabica; Viability; Parchment.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542012000400005
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Improved assessment of wheat seeds vigor Ciência e Agrotecnologia
Carvalho,Tereza Cristina de; Krzyzanowski,Francisco Carlos; Ohlson,Osvaldo de Castro; Panobianco,Maristela.
The tetrazolium test is widely used for seed vigor assessment of various plant species. For wheat, however, there is no methodology specifically recommended. This study aimed at determining an efficient procedure to evaluate vigor of wheat seeds by this test; besides allowing the establishment of seed quality classes. Thus, four different wheat seed lots were assessed by determining the moisture content and through tests of germination, accelerated aging, and field seedling emergence. The following methodologies were assessed: 1) longitudinal bisection of seed, with subsequent placement of the two halves on filter paper moistened with a 1.0% tetrazolium solution, at 30º C, for 2 h; 2) longitudinal bisection, with subsequent immersion of one seed half into...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Triticum aestivum; Physiological quality; Viability.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542012000600002
Registros recuperados: 83
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