Department of Food and Nutrition, Hanyang University, Sungdong-gu, Seoul 133-791, Republic of Korea.
Int J Biol Macromol. 2011 Oct 1;49(3):268-73. doi: 10.1016/j.ijbiomac.2011.04.021. Epub 2011 May 7.
Calcium alginate gel (CAG) beads were used to entrap the antioxidant astaxanthin-rich Xanthophyllomyces dendrorhous (ASX) by ionic gelation. ASX-CAG bead entrapment efficiency and release behavior, as influenced by alginate and CaCl(2) concentration and hardening time, were investigated. The optimized bead preparation conditions that gave rise to an efficient ASX release pattern were 1.5% alginate, 50mM CaCl(2), and a 5min hardening time. The antioxidant activity of non-encapsulated ASX was maintained for 4 days and then sharply decreased, whereas encapsulated ASX was maintained for 6 days. These results revealed that physical entrapment of ASX within CAG beads could be an effective technique for protecting the antioxidant activity of ASX from lipid peroxidation.
海藻酸钙凝胶 (CAG) 珠粒被用于离子凝胶化来捕获富含抗氧化剂虾青素的雨生红球藻 (ASX)。考察了海藻酸钠和 CaCl2 浓度及硬化时间对 ASX-CAG 珠粒包埋效率和释放行为的影响。得出的最佳珠粒制备条件为 1.5%海藻酸钠、50mM CaCl2 和 5min 硬化时间，在此条件下可以实现高效的 ASX 释放模式。未包封 ASX 的抗氧化活性可维持 4 天，随后急剧下降，而包封的 ASX 可维持 6 天。这些结果表明，ASX 物理包埋在 CAG 珠粒内可能是一种有效技术，可保护 ASX 的抗氧化活性免受脂质过氧化的影响。
