4329
Batch and continuous synthesis of lactulose from whey lactose by immobilized beta - galactosidase .
 Chemical: lactulose; Chemical: lactose
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: lactulose; Chemical: lactose