Journal
FOOD SCIENCE & NUTRITION
Volume 8, Issue 5, Pages 2234-2241Publisher
WILEY
DOI: 10.1002/fsn3.1462
Keywords
DHA-rich algal oil; ethanolysis; Lipozyme(R) TL IM; molecular distillation
Categories
Funding
- Xiamen Marine Economic Innovation and Development Demonstration Project [16CZP012SF04]
- Scientific Research Foundation of Third Institute of Oceanography, the Ministry of Natural Resources [2018020]
- Science and Technology Plan Program of Fujian Province [2017Y0061]
Ask authors/readers for more resources
Algal oil, rich in docosahexaenoic acid (DHA) and an environmentally sustainable source of omega-3 fatty acids, is receiving increasing attention. In the present study, a novel approach combining ethanolysis with a 1,3-specific immobilized lipase (Lipozyme(R) TL IM) and molecular distillation was investigated to increase the DHA content of algal oil. Algal oil with a 45.94% DHA content was mixed with ethanol, pumped into a column filled with Lipozyme(R) TL IM, and then circulated for 4 hr at room temperature. The ethanol was then recycled by vacuum distillation. At an evaporator temperature of 150 degrees C, the residue was separated by molecular distillation into a heavy component enriched with DHA glycerides (in the form of triglyceride (TG), diglyceride (DG), and monoglyceride (MG)) and a light component enriched with palmitic acid (PA) and DHA ethyl ester (EE). As a result, 76.55% of the DHA from the algal oil was present in the heavy component, whose DHA content was 70.27%. DHA-MG was collected in the heavy component mostly in the form of 1-MG. Lipozyme(R) TL IM appeared to specifically target PA rather than DHA at the sn-1(3) position. The Lipozyme(R) TL IM allowed 90.03% of the initial DHA yield to be retained after seven reaction cycles. Therefore, an eco-friendly and simple method for increasing the DHA content in algal oil has been developed.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available