Shi Yaning, Ye Fan, Zhu Yingjie, Miao Ming
College of Food Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu 210095, PR China; State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, PR China.
State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, PR China.
Food Chem. 2022 Aug 15;385:132626. doi: 10.1016/j.foodchem.2022.132626. Epub 2022 Mar 4.
The impact of sugary maize dendrimer-like glucan octenyl succinate (OSA-SMDG) on the storage stability and antioxidant activity of β-carotene (BC)-loaded emulsions as well as bioaccessibility were investigated. The encapsulation efficiency of β-carotene in emulsions containing 3% OSA-SMDG (3OSA-SMDG-BC) or 5% OSA-SMDG (5OSA-SMDG-BC) was 89.6% and 94.9%, respectively. The antioxidant activity of both emulsions was higher than that of pure β-carotene. During simulated digestion, the particle size of emulsions was immediately reduced, whereas zeta-potential was continuously increased in intestinal digestion. After 2 h digestion, the free fatty acids (FFA) release rate of 3OSA-SMDG-BC and 5OSA-SMDG-BC was significantly higher than that of blank emulsion. Bioaccessibility of β-carotene encapsulated in 3OSA-SMDG-BC and 5OSA-SMDG-BC was also significantly higher than that of blank emulsion. FFA release rate and β-carotene bioaccessibility of 5OSA-SMDG-BC were higher than that of 3OSA-SMDG-BC. These results demonstrated that OSA-SMDG could be used to fabricate food-grade O/W Pickering emulsion as a delivery system for bioactive compounds.
研究了含糖玉米树枝状大分子葡聚糖辛烯基琥珀酸酯（OSA-SMDG）对负载β-胡萝卜素（BC）乳液的储存稳定性、抗氧化活性以及生物可及性的影响。在含有3% OSA-SMDG（3OSA-SMDG-BC）或5% OSA-SMDG（5OSA-SMDG-BC）的乳液中，β-胡萝卜素的包封率分别为89.6%和94.9%。两种乳液的抗氧化活性均高于纯β-胡萝卜素。在模拟消化过程中，乳液的粒径立即减小，而在肠道消化过程中zeta电位持续增加。消化2小时后，3OSA-SMDG-BC和5OSA-SMDG-BC的游离脂肪酸（FFA）释放率显著高于空白乳液。包封在3OSA-SMDG-BC和5OSA-SMDG-BC中的β-胡萝卜素的生物可及性也显著高于空白乳液。5OSA-SMDG-BC的FFA释放率和β-胡萝卜素生物可及性高于3OSA-SMDG-BC。这些结果表明，OSA-SMDG可用于制备食品级水包油Pickering乳液，作为生物活性化合物的递送系统。
