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Updated: Jul 4, 2026

A Customizable Approach for the Enzymatic Production and Purification of Diterpenoid Natural Products
Published on: October 4, 2019
Natural compounds obtained through centrifugal molecular distillation
Vanessa Mayumi Ito1, Patricia Fazzio Martins, César Benedito Batistella
1Separtaion Process Development Laboratory, School of Chemical Engineering, State University of Campinas, PO Box 6066, 13081-970 Campinas, Brazil. vanessa@lopca.feq.unicamp.br
This study demonstrates a solvent-free method using molecular distillation to concentrate valuable tocopherols from soybean oil deodorized distillate (SODD). The process effectively removes free fatty acids (FFA), enhancing tocopherol yield without chemical pre-treatments.
Area of Science:
- Food Chemistry
- Chemical Engineering
- Separation Science
Background:
- Soybean oil deodorized distillate (SODD) contains valuable unsaponifiable materials like tocopherols.
- Current methods for tocopherol recovery often involve chemical reactions, which are unsuitable for natural products.
- Molecular distillation offers a solvent-free, low-temperature separation technique with high potential for tocopherol concentration.
Purpose of the Study:
- To investigate the sole use of molecular distillation for recovering tocopherols from SODD.
- To maximize free fatty acid (FFA) removal and subsequently increase tocopherol concentration.
- To avoid chemical pre-treatments, making the process more suitable for natural products.
Main Methods:
- Utilized molecular distillation for tocopherol recovery from SODD.
- Conducted experiments within a temperature range of 140-220°C.
- Varied feed flow rates between 5 and 15 g/min.
Main Results:
- Achieved high concentrations of tocopherols by effectively removing free fatty acids (FFA).
- Observed a significant percentage of FFA in the distillate at low feed flow rates and low evaporator temperatures.
- Demonstrated that low temperatures and flow rates minimize thermal decomposition effects.
Conclusions:
- Molecular distillation is a viable and efficient method for recovering high-value tocopherols from SODD without chemical additives.
- Optimized conditions (low temperature and flow rate) favor FFA removal, leading to concentrated tocopherols.
- This solvent-free approach enhances the sustainability and suitability of tocopherol recovery from natural sources.
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