Grasas y Aceites, Vol 70, No 4 (2019)

Purification of degummed crude sunflower oil with selected metal-organic frameworks as adsorbents


https://doi.org/10.3989/gya.0930182

E. Yılmaz
Çanakkale Onsekiz Mart University, Faculty of Engineering, Department of Food Engineering, Turkey
orcid http://orcid.org/0000-0003-1527-5042

A. K. Erden
Çanakkale Onsekiz Mart University, Faculty of Engineering, Department of Food Engineering, Turkey
orcid http://orcid.org/0000-0001-5024-4618

Abstract


The aims of this study were to investigate the effectiveness of seven metal-organic frameworks (MOFs) as adsorbents for the purification of crude degummed sunflower oil, and to compare their effectiveness with three natural clays. The oil was treated with two different addition levels (0.05% and 0.3%, w/w), and two different treatment times (0.5 h and 3.0 h) under constant temperature (25 °C). The results indicated that all adsorbent treatments improved the oil’s physico-chemical properties. Most importantly, the oil’s free fatty acid, peroxide and p-anisidine values were significantly reduced by Ti-MOF and γ-CD-MOF in comparison with the control sample. The oil showed no contamination by the metals during the MOF treatments. There were no significant changes in the fatty acid or sterol composition of the treated oil, while α-tocopherol contents decreased to some extent. This study proved the possibility of MOF as adsorbents for crude oil purification, and showed the great potential of Ti-MOF and γ-CD-MOF as promising adsorbents.

Keywords


Adsorption; Crude oil; Free fatty acid; Metal-organic framework; Peroxide; Purification

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References


Anonymous. 2018. Vegetable oil statistics of Turkey. http://www. bysd.org.tr/tr/istatistikler (Accessed in 27.06.2018)

AOCS. 1998. Official Methods and Recommended Practices of the American Oil Chemists’ Society, 5th Edn, AOCS Press, Champaigne 1998, IL.

Aydeniz B, Yılmaz E. 2016. Performance of different natural antioxidant compounds in frying oils. Food Technol. Biotechnol. 54, 21–30.

Bu F, Lin Q, Zhai Q, Wang L, Wu T, Zheng S-T, Bu X, Feng P. 2012. Two zeolite-type frameworks in one metal-organic framework with Zn24@Zn104 cube-in-sodalite architecture. Angew. Chem. Int. Ed. 51, 8538–8541.

Bulut E, Yilmaz E. 2010. Comparison of the frying stability of sunflower and refined olive pomace oils with/without adsorbent treatment. J. Am. Oil Chem. Soc. 87, 1145–1153.

Codex. 1999. Codex standard for named vegetable oils, CXSTAN 210. Turkish Food Codex, Ankara, Turkey.

Davidson HF, Campbell EJ, Bell RJ, Pritchard RA. 1996. Sunflower oil, in Hui YH. (Ed.) Bailey’s Industrial Oil and Fat Products, Wiley-Interscience, New York, pp. 603–690.

Dhakshinamoorthy A, Li Z, Garcia H. 2018. Catalysis and photocatalysis by metal organic frameworks. Chem. Soc. Rev. 47, 8134–8172.

Furukawa H, Cordova K, Keeffe M, Yaghi O. 2013. The chemistry and applications of metal-organic frameworks. Sci. 341 (6149), 123–444.

Grilo Câmara E, Costa PN, Gurgel CSS, Beserra AFM, Almeida FNS, Dimenstein R. 2014. Alpha-tocopherol and gamma-tocopherol concentration in vegetable oils. Food Sci. Technol. (Campinas) 34, 379–385.

Hodgson AS. 1996. Refining and bleaching, in Hui, YH. (Ed.) Bailey’s Industrial Oil and Fat Products, Wiley-Interscience, New York, pp. 157–212.

Li N, Wang Z, Zhang L, Nian L, Lei L, Ynag X. 2014. Liquid-phase extraction coupled with metal-organic frameworks-based dispersive solid phase extraction of herbicides in peanuts. Talanta 128, 345–353.

Li N, Zhang L, Nian L, Cao B, Wang Z, Lei L, Yang X, Sui J, Zhang H, Yu A. 2015. Dispersive micro-solid-phase extraction of herbicides in vegetable oil with metal-organic framework MIL-101. J. Agric. Food Chem. 63, 2154–2161.

Ma Y, Lin J, Xue Y, Li J, Huang Y, Tang C. 2014. Acid-assisted hydro thermal synthesis and adsorption properties of high-specific-surface metal-organic frameworks. Mater. Lett. 132, 90–93.

Minitab. 2010. Minitab Statistical Software (Version 16.1.1). Minitab Inc. State College, Pennsylvania.

Moussa Z, Hmadeh M, Abiad MG, Dib OH, Patra D. 2016. Encapsulation of curcumin in cycodextrin-metal organic frameworks: Dissociation of loaded CD-MOFs enhances stability of curcumin. Food Chem. 212, 485–494.

Nas S, Gökalp HY. 2017. Bitkisel ya? teknolojisi (Vegetable oil technology). Sidas Medya Co, ?zmir, Turkey, 320 p. ISBN: 978-605-5267-41-4.

ISO. 1999. International Standards Official Methods 12228:1999. Animal and Vegetable Fats and Oils-Determination of Individual and Total Sterols Contents-Gas Chromatographic Method, International Organization for Standardization, Geneve, Switzerland.

Park KS, Ni Z, Cote AP, Choi JY, Huang R, Uribe-Romo FJ, Chae HK, O’Keeffe M, Yaghi O. 2006. Exceptional chemical and thermal stability of zeolitic imidazolate frameworks. Proc. Nat. Acad. Sci. USA. 103, 10186–10191.

Spanopoulos I, Bratsos I, Tampaxis C, Kourtellaris A, Tasiopoulos A, Charalambopoulou G, Steriotis TA, Trikalitis PN. 2015. Enhanced gas-sorption properties of a high surface area, ultra micro porous magnesium formate. Cryst. Eng. Comm. 17, 532–539.

Stock N, Biswas S. 2012. Synthesis of metal-organic frameworks (MOFs): routes to various MOF topologies, morphologies, and composites. Chem. Rev. 112, 933–969.

TSE. 1970. Yemeklik bitkisel ya?lar-muayene metodları. Metot TSE 894. Resmi Gazete, Ankara, Turkey.

Vlasova EA, Yakimov SA, Naidenko EV, Kudrik EV, Makarov SV. 2016. Application of metal-organic frameworks for purification of vegetable oils. Food Chem. 190, 103–109.

Yilmaz E, Erden A, Güner M. 2018. Structure and properties of selected metal organic frameworks as adsorbent materials for edible oil purification. Riv. Ital. Del. Sost. Gras. 96, 25–38. ISSN: 0035-6808. ISSN: 0035-6808.

Yilmaz E, Hüriyet Z, Arifoğlu N, Dündar Emir D. 2017. Functional properties of the capia pepper seed defatted presscakes. Waste Biomass Valor. 8, 783–791.




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