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- Title
Removal of DBP from evening primrose oil with activated clay modified by chitosan and CTAB.
- Authors
Pan, F. G.; Wang, M. Q.; Xu, J. Y.; Yang, C. X.; Li, S.; Lu, Y. F.; Zhang, Y. D.; Liu, B. Q.
- Abstract
The pollution of phthalic acid esters (PAEs) in edible oils is a serious problem. In the current study, we attempt to remove dibutyl phthalate ester (DBP) from evening primrose oil (EPO) with modified activated clay. The activated clay, commonly used for de-coloration in the oil refining process, was modified by chitosan and hexadecyl trimethyl ammonium bromide (CTAB). The modifications were characterized by SEM, XRD, and FT-IR. We further tested the DBP adsorption capacity of CTAB/chitosan-clay and found that the removal rate was 27.56% which was 3.24 times higher than with pristine activated clay. In addition, the CTAB/chitosan-clay composite treatment had no significant effect on the quality of evening primrose oil. In summary, the CTAB/chitosan-clay composite has a stronger DBP adsorption capacity and can be used as a new adsorbent for removing DBP during the de-coloration process of evening primrose oil.
- Subjects
CHITOSAN; ACTIVATED clay; EVENING primrose oil; PRIMROSES; PHTHALATE esters; CLAY; DIBUTYL phthalate; EDIBLE fats &; oils; ADSORPTION capacity
- Publication
Grasas y Aceites, 2022, Vol 73, Issue 3, p1
- ISSN
0017-3495
- Publication type
Article
- DOI
10.3989/gya.0438211