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Changes in 3-MCPD esters, glycidyl esters, bioactive compounds and oxidation indexes during kenaf seed oil refining

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Abstract

An optimized refining process for kenaf seed oil was conducted. The 3-monochloro-1,2-propanediol (3-MCPD) contents, triacylglycerol composition, fatty acids composition, bioactive compounds, phosphorus contents, and oxidation indexes of the kenaf seed oil during each stage of the refining process were determined. The results showed that there was no detected 3-MCPD ester in kenaf seed oil throughout the refining process. Deodorization had slightly increased the 2-MCPD ester (9.0 μg/kg) and glycidyl ester (54.8 μg/kg). Oleic (36.53%) and linoleic acids (36.52%) were presented in the largest amount in the refined kenaf seed oil, and triacylglycerols contributed to 99.96% in the oil. There was a removal of 31.6% of phytosterol content and 17.1% of tocopherol and tocotrienol contents in kenaf seed oil after refining. The refining process was totally removed the hydroperoxides, 93% of free fatty acids and 98.8% of phosphorus content in kenaf seed oil.

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Acknowledgements

Financial support of this work by internal funding from CERVIE UCSI University (Proj-In-FAS-024) is gratefully acknowledged.

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Authors and Affiliations

  1. Department of Food Science and Nutrition, Faculty of Applied Sciences, UCSI University, 56000, Kuala Lumpur, Malaysia

    Sook-Chin Chew & Kar-Lin Nyam

  2. Department of Food Technology, Faculty of Food Science and Technology, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia

    Chin-Ping Tan

  3. Department of Bioprocess Technology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia

    Oi-Ming Lai

Authors
  1. Sook-Chin Chew
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  2. Chin-Ping Tan
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Correspondence to Kar-Lin Nyam.

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Chew, SC., Tan, CP., Lai, OM. et al. Changes in 3-MCPD esters, glycidyl esters, bioactive compounds and oxidation indexes during kenaf seed oil refining. Food Sci Biotechnol 27, 905–914 (2018). https://doi.org/10.1007/s10068-017-0295-8

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  • DOI: https://doi.org/10.1007/s10068-017-0295-8

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