Obtenção de lactose do soro de queijo
AUTOR(ES)
Inigo Verdalet Guzman
DATA DE PUBLICAÇÃO
1979
RESUMO
A study of lactose recovery from whey resulting from ricotta cheese manufacture was carried auto Experiments aimed at the preservation of whey showed that addition of 0.01% hydrogen peroxide (70 vol.) and storage at 4-6 °C produced good results. It was also found that heating the whey to 93ºC adjusting pH to 4.7 with acetic acide made possible a greater degree of deproteinization than that obtained with other gents. After deproteinization the whey was concentrated to 65% of solids in a rotating film evaporator and the lactose was crystallized in 2 steps: firts, rapidly at 30°C and afterwards gradually till l5°C in 6 h. The crystals were separated in abasket centrifuge and washed with 1.5 kg of water/ kg of lactose. The product was dried at 80°C and denoted as Crude Lactose, its yield being 76.9%. In order to obtain Refined Lactose, The Crude Lactose was dissolved in hot water, bleached with 3% of active carbon, filtered and re-crystallized.The overall yield of lactose the basis of its contents in the whey was 62.3%. Analytical results showed that the lactose thus obtained was comparable in quality with the imported product and of better quality than lactose produced locally.
ASSUNTO(S)
ACESSO AO ARTIGO
http://libdigi.unicamp.br/document/?code=000051697Documentos Relacionados
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