21751
Maximum yield of 0 . 41 g g ( - 1 ) fructosyl - galacto - oligosaccharides was obtained at 70 degrees C and 60 % w / w lactulose concentration , while maximum specific productivity of 1 . 2 g h ( - 1 ) mg ( - 1 ) was obtained at 70 degrees C and 40 % w / w lactulose concentration .
 Chemical: fructosyl - galacto - oligosaccharides; Chemical: lactulose; Chemical: lactulose
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: fructosyl - galacto - oligosaccharides; Chemical: lactulose; Chemical: lactulose