期刊
FOOD CHEMISTRY
卷 391, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.foodchem.2022.133201
关键词
Alpha-linolenic acid; Diacylglycerol; Diacylglycerol stearin; Emulsion stability; In vitro digestion
资金
- National Key R&D Program of China [2019YFD1002403]
- National Science Fund for Key Program of National Natural Science Foundation of China [31930084]
- Distinguished Young Scholars of China [31725022]
- China Agriculture Research System [CARS-18-ZJ0503]
- Science and Technology Planning Project of Guangdong Province [2019A050503002]
- Innovation and Entrepreneurship Team of Nanhai Talent Plan of Nanhai District, Foshan [201811070001]
This study developed a stable emulsion form of alpha-linolenic acid (ALA) supplement using ALA-rich diacylglycerol (ALA-DAG) and ALA-DAG stearin (DAG-SF) as a new source of ALA and emulsifier. The emulsions showed high emulsion stability and good potential in improving ALA nutritional status. The emulsion system had tunable texture and high oxidation stability, making it useful for a wide range of food products.
This study developed an alpha-linolenic acid (ALA) supplement with emulsion form using ALA-rich diac-ylglycerol (ALA-DAG) and ALA-DAG stearin (DAG-SF) as a new source of ALA and emulsifier. Stable, commercial surfactant-free W/O emulsions with 90 wt% oil phase (including DAG-SF and ALA-DAG with 10:90 - 20:80 wt ratio) was fabricated. Microstructure and Raman spectra revealed that the compact crystal networks and high amounts of solid acyl chains were responsible for high emulsion stability. These emulsions exhibited good po-tential in improving the ALA nutritional status (with ALA release level of 60.49% - 62.98%). Furthermore, the emulsifier-to-oil ratio greatly impacted the emulsion texture (solid-like or liquid-like) and emulsions showed great oxidation stability (2.80 - 3.09 meq/kg lipid of peroxide value at 6th week). The tunable texture and high oxidation stability make this emulsion system useful for a wide range of food products. This developed emulsion system could provide valuable information for other important fatty acids supplement.
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