Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/2279
Title: Adsorption of olive leaf (Olea europaea L.) antioxidants on silk fibroin
Authors: Bayçın, Deniz
Altıok, Evren
Ülkü, Semra
Bayraktar, Oğuz
Keywords: Antimicrobial
Antioxidant
Olea europaea
Oleuropein
Olive leaves
Silk fibroin
Publisher: American Chemical Society
Source: Bayçın, D., Altıok, E., Ülkü, S., and Bayraktar, O. (2007). Adsorption of olive leaf (Olea europaea L.) antioxidants on silk fibroin. Journal of Agricultural and Food Chemistry, 55(4), 1227-1236. doi:10.1021/jf062829o
Abstract: The adsorption isotherms of oleuropein and rutin were evaluated at different temperatures, pH values, and solid/liquid ratios. The experimental data of adsorption isotherms were well fitted to a Langmuir model. The maximum adsorption capacities were determined as 108 mg of oleuropein/g of silk fibroin and 21 mg of rutin/g of silk fibroin. After adsorption of oleuropein and rutin, the antioxidant capacity of silk fibroin increased from 1.93 to 3.61 mmol of TEAC/g. Silk fibroin also gained antimicrobial activity against Staphylococcus aureus and Klebsiella pneumoniae after adsorption of olive leaf antioxidants. In a desorption process, 81% of rutin and 85% of oleuropein were removed from the adsorbent surface in 70% aqueous ethanol solution. Consequently, silk fibroin was found to be a promising biomaterial for the production of functional food or dietary supplements and for the purification of oleuropein and rutin from olive leaf extracts.
URI: http://doi.org/10.1021/jf062829o
http://hdl.handle.net/11147/2279
ISSN: 0021-8561
0021-8561
Appears in Collections:Chemical Engineering / Kimya Mühendisliği
PubMed İndeksli Yayınlar Koleksiyonu / PubMed Indexed Publications Collection
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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