| Autor: |
Yan Wu, Yan Ling Gao, Sheng Ming An, Jinhong Wu, Li Fang Qian, Guo Ping Yu |
| Rok vydání: |
2013 |
| Předmět: |
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| Zdroj: |
Advanced Materials Research. :1429-1434 |
| ISSN: |
1662-8985 |
| DOI: |
10.4028/www.scientific.net/amr.634-638.1429 |
| Popis: |
The galactooligosaccharide (GOS) was produced by Bulgarian lactic acid bacteria fermentation and further refined by application of an ultrafiltration-nanofiltration continuous membrane combination technology established in this paper. Results revealed that the optimum of membrane operation conditions for ultrafiltration were 0.05 Mpa at the feed concentration of 2.5 g/L, and the optimal conditions for nanofiltration were 45 °C, 0.4 Mpa. After refining by membrane combination technology, 96.70% of proteins were removed and the relative quality ratio of the refined GOS product was increased by 22 times or so, which mainly contained oligomers with DP 3 and DP 2, and mostly distributed between 108 Da and 2415 Da. These findings suggest that the ultrafiltration-nanofiltration continuous membrane combination technology is a new and favorable processes method for enrich or refining of milk-derived GOS obtained by fermentation. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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