Stability of eicosapentaenoic acid and docosahexaenoic acid in spray-dried powder of emulsified krill oil
Stability of eicosapentaenoic acid and docosahexaenoic acid in spray-dried powder of emulsified krill oil
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DOI：
10.1016/j.fufo.2020.100009
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发表时间：
2021-06
期刊：
影响因子：
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通讯作者：
A. Sultana;Y. Maki;Anthony C. Fermin;S. Adachi;H. Yoshii
中科院分区：
文献类型：
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作者：
A. Sultana;Y. Maki;Anthony C. Fermin;S. Adachi;H. Yoshii
来自太平洋磷虾（Euphausia pacifica）的磷虾油（KO）含有高含量的多不饱和脂肪酸（PUFA）和磷脂。由于 PUFA 的氧化，这种 KO 非常不稳定。封装可防止这些 PUFA 被氧化并延长保质期。将乳化的 KO 用麦芽糖糊精（葡萄糖当量 = 19）和皂树皂甙作为乳化剂进行封装。研究了喷雾干燥粉末中二十碳五烯酸 (EPA) 和二十二碳六烯酸 (DHA) 的保留情况，并在 25、50 和 70°C 的铝袋中测量了它们在乳化磷虾油喷雾干燥粉末中储存期间的稳定性。对于经过高压均质化的样品，喷雾干燥后立即喷雾干燥的粉末中 EPA 和 DHA 的保留率分别为 99% 和 100%。室温（25°C）保存 6 个月后，保留率超过 80%。然而，在 50°C 储存 6 个月后，此类保留率分别约为 5% 和 0%。保留量可以使用 Avrami 方程来估计。
Krill oil (KO) from Pacific krill (Euphausia pacifica) has high contents of polyunsaturated fatty acids (PUFAs) and phospholipids. This KO is very unstable due to the oxidation of PUFAs. Encapsulation prevents those PUFAs to be oxidized and prolongs the shelf-life. Emulsified KO was encapsulated with maltodextrin (dextrose equivalent = 19) andQuillajasaponin as emulsifiers. The retentions of eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) in the spray-dried powders were investigated and their stabilities in the spray-dried powder of emulsified krill oil during storage were measured in aluminum pouches at 25, 50, and 70°C. The retentions of EPA and DHA in spray-dried powders immediately after spray drying were 99% and 100%, respectively, for samples subjected to high-pressure homogenization. Those retentions after 6 months of storage at room temperature (25°C) were over 80%. However, such retentions after 6 months of storage at 50°C were approximately 5% and 0%, respectively. The retentions could be estimated using the Avrami equation.