Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10977934 | Journal of Dairy Science | 2013 | 6 Pages |
Abstract
β-Cyclodextrin (β-CD) was converted into β-CD-undecenyl ether by chemical modification and subsequently covalently attached to a glass surface. The functionalized glass surface was characterized by static water contact angle and x-ray photoelectron spectroscopy. Both techniques confirmed that an excellent monolayer of β-CD was formed on the glass surface. The β-CD solid surface was used to reduce cholesterol levels in milk. In 4 h, 73.6% of the cholesterol was extracted at 25°C with shaking at 170 rpm. This is the highest value ever reported for milk using β-CD immobilized on a solid surface. The same surface was repeatedly used for 10 cycles and maintained its efficiency with 72 ± 2% cholesterol reduction observed in all the cycles. X-ray photoelectron spectroscopy analysis completed after 5 and 10 cycles of cholesterol reduction showed that the β-CD on the glass surface was not degraded. The high efficiency and long-term stability of the functional monolayer was attributed to the specific structure of β-CD, which is composed of a relatively low number of functional groups and long spacer chain lengths that provide great flexibility.
Related Topics
Life Sciences
Agricultural and Biological Sciences
Animal Science and Zoology
Authors
Muhammad Nazir Tahir, Chanho Kwon, Daham Jeong, Eunae Cho, Seung R. Paik, Seunho Jung,