Cholesterol removal by selected metal-organic frameworks as adsorbents

YILMAZ E., Senel E., OK S.

JOURNAL OF FOOD SCIENCE AND TECHNOLOGY-MYSORE, vol.57, no.1, pp.173-181, 2020 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 57 Issue: 1
  • Publication Date: 2020
  • Doi Number: 10.1007/s13197-019-04045-5
  • Journal Name: JOURNAL OF FOOD SCIENCE AND TECHNOLOGY-MYSORE
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, ABI/INFORM, Agricultural & Environmental Science Database, Analytical Abstracts, Aquatic Science & Fisheries Abstracts (ASFA), BIOSIS, Biotechnology Research Abstracts, CAB Abstracts, Compendex, Food Science & Technology Abstracts, INSPEC, Veterinary Science Database
  • Page Numbers: pp.173-181
  • Keywords: Cholesterol, Removal, Metal-organic framework, Peroxide value, SOLID-PHASE EXTRACTION, BETA-CYCLODEXTRIN, ADSORPTION, HERBICIDES, STABILITY, OIL
  • Çanakkale Onsekiz Mart University Affiliated: Yes

Abstract

The aim of this study was to investigate the cholesterol removal capacity of seven metal-organic frameworks (MOF) and to compare with active carbon as adsorbents, and with aqueous beta-cyclodextrine complexation removal technique. There were slight color differences in the oil samples after the treatments. The lowest free fatty acidities (0.13% and 0.13% linoleic acid) and peroxide values (21.07 and 23.50 meqO(2)/kg) were measured in aluminum-MOF (Al-MOF) and titanium-MOF (Ti-MOF) treated samples when compared to control sample (0.15%, and 27.62 meqO(2)/kg). Cholesterol reduction ratios of the Al-MOF treated sample (27.45%) and Ti-MOF treated sample (26.27%) were higher among all adsorbent treatments, but lower than that of the beta-cyclodextrine aqueous complexation technique (33.07%). Further experiments with Al-MOF and Ti-MOF showed that when adsorbent addition level increased to 3.0%, removed cholesterol content increased. Likewise, when treatment times extended to 180 min, more cholesterol was removed. But, the removed cholesterol contents at 100 degrees C and 30 degrees C treatment temperatures were lower than that of at 50 degrees C treatment temperature. Further experiments with butter and sheep tail tallow showed that Al-MOF was quite effective as an adsorbent to remove cholesterol. This study proves the great potential of MOF to remove cholesterol selectively from oil/fat by adsorption principle.