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Evaluation of food grade solvents for lipid extraction and impact of storage temperature on fatty acid composition of edible seaweeds laminaria digitata - Phaeophyceae and Palmaria palmata - Rhodophyta
Citation
Schmid, M and Guiheneuf, F and Stengel, D, Evaluation of food grade solvents for lipid extraction and impact of storage temperature on fatty acid composition of edible seaweeds laminaria digitata - Phaeophyceae and Palmaria palmata - Rhodophyta, Food Chemistry, 208 pp. 161-168. ISSN 0308-8146 (2016) [Refereed Article]
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DOI: doi:10.1016/j.foodchem.2016.03.123
Abstract
This study evaluated the impact of different food- and non-food grade extraction solvents on yield and fatty acid composition of the lipid extracts of two seaweed species (Palmaria palmata and Laminaria digitata). The application of chloroform/methanol and three different food grade solvents (ethanol, hexane, ethanol/hexane) revealed significant differences in both, extraction yield and fatty acid composition. The extraction efficiency, in terms of yields of total fatty acids (TFA), was in the order: chloroform/methanol > ethanol > hexane > ethanol/hexane for both species. Highest levels of polyunsaturated fatty acids (PUFA) were achieved by the extraction with ethanol. Additionally the effect of storage temperature on the stability of PUFA in ground and freeze-dried seaweed biomass was investigated. Seaweed samples were stored for a total duration of 22 months at three different temperatures (−20 °C, 4 °C and 20 °C). Levels of TFA and PUFA were only stable after storage at −20 °C for the two seaweed species.
Item Details
Item Type: | Refereed Article |
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Keywords: | lipid extraction, seaweeds, PUFA, omega-3 fatty acids, storage, lipid oxidation |
Research Division: | Agricultural, Veterinary and Food Sciences |
Research Group: | Food sciences |
Research Field: | Food chemistry and food sensory science |
Objective Division: | Expanding Knowledge |
Objective Group: | Expanding knowledge |
Objective Field: | Expanding knowledge in the chemical sciences |
UTAS Author: | Schmid, M (Dr Matthias Schmid) |
ID Code: | 151837 |
Year Published: | 2016 |
Web of Science® Times Cited: | 25 |
Deposited By: | Ecology and Biodiversity |
Deposited On: | 2022-08-05 |
Last Modified: | 2022-08-05 |
Downloads: | 0 |
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