Sistema de produção de bubalinos para leite e carne.

bitstream/item/33537/1/CPATU-CirTec16.pd

Iogurte de leite de búfala com sabores de frutas da Amazônia.

bitstream/item/33778/1/CPATU-CirTec23.pd

Características, peculiaridades e tecnologia do leite de búfala.

Características e peculiaridades do leite de búfala. Industrialização do leite. Características dos produtos derivados do leite de búfala. Tecnologia do leite de búfala e rendimento dos produtos.bitstream/item/58474/1/CPATU-DOC-57-.pd

Fast analysis of low molecular mass compounds present in snake venom: identification of ten new pyroglutamate-containing peptides.

Made available in DSpace on 2018-06-09T01:20:56Z (GMT). No. of bitstreams: 1 ID25295.pdf: 254192 bytes, checksum: 13faf75f59f61e212f0e82fe521da5d8 (MD5) Previous issue date: 2005-07-21bitstream/item/178385/1/ID-25295.pd

Suplementação mineral de bovinos de corte em pastagem nativa.

bitstream/item/33524/1/CPATU-CirTec12.pd

Engorda de machos bubalinos da raça Mediterrâneo em pastagem de quicuio da amazônia (Brachiaria humidicola) na terra firme.

bitstream/item/33780/1/CPATU-CirTec25.pd

Kinetics of b-galactosidase immobilized on polysiloxanepolyvinyl alcohol magnetic composite – POS-PVAM

b-Galactosidase is an enzyme with a wide industrial application, mostly in the hydrolysis of lactose and, more recently, in the synthesis of oligosaccharides. Several advantages are associated with the application of immobilized enzymes. In this work, b-Galactosidase was covalently immobilized onto a POS-PVAM using glutaraldehyde as activating agent and its hydrolytic properties evaluated. For both soluble and immobilized b-Galactosidase, the optimal temperature and pH were found to be 50 ºC and 6.5, respectively. The immobilized enzyme showed to be more resistant than the soluble form when hydrolysis experiments were performed out within the above optimal condition, being the observed difference in activity more pronounced for temperatures higher than 50ºC. An enhancement of the thermal stability of the immobilized enzyme was also observed. The apparent Km and Ea for both soluble (7.377 ± 1.303mM and 25.51 ± 8.72Kj mol-1) and immobilized enzyme (7.841 ± 1.189mM and 32.61 ± 5.82Kj mol-1) showed to be not significantly different. The immobilization also proved to be advantageous as, after twenty reutilizations, the immobilized enzyme retained about 52% of its initial activity. These results clearly demonstrate that POS-PVAM may be used for b- Galactosidase immobilization since, besides improving the enzyme hydrolytic properties, its separation from the obtained reaction products is easier to accomplish

Características de carcaças de búfalos engordados em pastagem nativa de terra inundável.

bitstream/item/31958/1/CPATU-BP81.pd

Immobilization of b-galactosidase from kluyveromyces lactis onto a polysiloxane–polyvinyl alcohol magnetic (mPOS–PVA) composite for lactose hydrolysis

β-Galactosidase from Kluyveromyces lactis was covalently immobilized onto a mPOS–PVA, using glutaraldehyde as activating agent and its properties were evaluated. The enzymatic water insoluble derivative displayed the same optimum pH (6.5) and optimum temperature (50 °C) of the soluble enzyme. The apparent Km app and activation energy for both soluble and immobilized enzyme derivative were found to be not significantly different. The mPOS–PVA β-galactosidase preparation presented a higher operational and thermal stability than the soluble enzyme. This immobilized β-galactosidase also was effective in hydrolyzing lactose from milk. Hence, one can conclude that mPOS–PVA is an attractive and efficient support for β-galactosidase immobilization.Alban, the European Union Programme of High Level Scholarships for Latin America; Brazilian National Research Council (CNPq)