Abstract：
:Batch synthesis of fructosyl-galacto-oligosaccharides from lactulose was performed with commercial β-galactosidase preparations from Aspergillus oryzae, Kluyveromyces lactis and Bacillus circulans. The enzyme from A. oryzae produced the highest yield and specific productivity of synthesis, being selected for further studies. Optimization of fructosyl-galacto-oligosaccharides synthesis was carried out using response surface methodology, considering temperature and initial sugar concentration as variables and yield and specific productivity as response parameters. Maximum yield of 0.41 g g(-1) fructosyl-galacto-oligosaccharides was obtained at 70°C and 60% w/w lactulose concentration, while maximum specific productivity of 1.2 g h(-1)mg(-1) was obtained at 70°C and 40% w/w lactulose concentration.
journal_name
Food Chemjournal_title
Food chemistryauthors
Guerrero C,Vera C,Illanes Adoi
10.1016/j.foodchem.2012.10.128subject
Has Abstractpub_date
2013-06-15 00:00:00pages
2225-32issue
4eissn
0308-8146issn
1873-7072pii
S0308-8146(12)01702-5journal_volume
138pub_type
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