[Uses of microbial beta-galactosidases to reduce lactose content in milk and dairy products]. / Usos de beta-galactosidasas microbianas para reducir el contenido de lactosa en leche y productos lácteos.
Rev Invest Clin
; 48 Suppl: 51-61, 1996 Nov.
Article
em Es
| MEDLINE
| ID: mdl-9122548
The commercial sources of microbial beta-galactosidases (lactases) include the yeasts species Kluyveromyces marxianus, Kluyveromyces lactis and Candida kefyr which are used to hydrolyse lactose in milk due to their optimum pH. On the other hand, lactases obtained from the moulds Aspergillus niger and Aspergillus oryzae have an acid optimum pH and therefore are used to hydrolyse lactose in whey to obtain whey syrups to be used as raw materials in the food industry. The lactose intolerance problem has led to many studies concerning lactose hydrolysis by means of these microbial enzymes to obtain milk suitable for people with lactose maldigestion and special diets for ill persons, elderly population and intolerant babies due to secondary deficiency of lactose. Most industries obtain hydrolyzed lactose milk with free enzyme; however, there are some developments of immobilized lactase catalysts which are being used mainly in whey.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Beta-Galactosidase
/
Laticínios
/
Leite
/
Lactose
Limite:
Animals
Idioma:
Es
Revista:
Rev Invest Clin
Assunto da revista:
MEDICINA
Ano de publicação:
1996
Tipo de documento:
Article
País de afiliação:
México
País de publicação:
México