Encapsulation of phenolic-rich lemon-scented tea tree extract in lemon pomace powder

IF 4.6 Q1 CHEMISTRY, APPLIED
Md Saifullah, Rebecca McCullum, Taiwo Olusesan Akanbi, Quan Van Vuong
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引用次数: 0

Abstract

The Australian native plant, lemon-scented tea tree (LSTT) is rich in polyphenols with strong antioxidant activities. Encapsulation enhances the potential applications of plant extracts and additionally protects them from degradation. The encapsulating agent is one of the key elements in the encapsulation process. In this study, lemon pomace powder (LPP) was investigated as a new carrier agent for LSTT leaf phenolic extract, and its performance was compared with the commonly used polysaccharide (i.e., maltodextrin (MD)) and protein-based (i.e., soy protein isolate (SPI)) coating materials. The encapsulation efficiency, colour, polyphenol and antioxidant property retention, particle morphology, crystallinity, flow properties, and release behaviour in food simulants and gastrointestinal fluid were studied to compare the performance of the carrier agents individually and in combinations. The encapsulation efficiency of lemon pomace powder (LPP) was above 95 % and the order for the retention of polyphenol and antioxidant capacities were MD>LPP>SPI. LPP offers better flow properties and unique particle morphology, which was also amorphous in nature with some degree of crystallinity. The release profile in the food simulants showed a controlled and sustained release rate over the tested period, which was comparable with MD and SPI. In gastrointestinal fluids, the percent release followed the order of SPI>LPP>MD for the carrier agents. The incorporation of LPP with MD and SPI can improve several properties of the individual carrier agents. Thus, LPP can be used as a potential carrier agent for polyphenols in functional food formulation either on its own or in combination with other coating materials.

Abstract Image

富含酚的柠檬香茶树提取物在柠檬渣粉中的包封
澳大利亚本土植物柠檬花茶富含多酚,具有很强的抗氧化活性。封装增强了植物提取物的潜在应用,并额外保护它们免受降解。封装剂是封装过程中的关键元件之一。本研究将柠檬渣粉(LPP)作为LSTT叶酚提取物的新载体,并与常用的多糖(即麦芽糊精(MD))和蛋白质基(即大豆分离蛋白(SPI))涂层材料进行了性能比较。研究了食品模拟物和胃肠液中的包封效率、颜色、多酚和抗氧化性能保留率、颗粒形态、结晶度、流动性能和释放行为,以比较单独和组合载体剂的性能。柠檬渣粉(LPP)的包封率在95%以上,多酚和抗氧化能力的保留顺序为MD>;LPP>;SPI。LPP提供了更好的流动性能和独特的颗粒形态,其本质上也是无定形的,具有一定程度的结晶度。在测试期间,食品模拟物中的释放曲线显示出可控和持续的释放速率,与MD和SPI相当。在胃肠液中,释放百分比遵循SPI>;LPP>;承运人代理的MD。LPP与MD和SPI的结合可以改善单个载体剂的几种性能。因此,LPP可以单独或与其他涂层材料组合用作功能性食品配方中多酚的潜在载体。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
4.50
自引率
0.00%
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0
审稿时长
61 days
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