搅拌型酸奶作为合生元特级初榨橄榄油纳米乳液和纳米复合材料冻干微胶囊的递送基质。

Stirred Yogurt as a Delivery Matrix for Freeze-Dried Microcapsules of Synbiotic EVOO Nanoemulsion and Nanocomposite.

作者信息

El-Sayed Hoda S, Youssef Khamis, Hashim Ayat F

机构信息

Dairy Science Department, Food Industries and Nutrition Research Institute, National Research Centre, Giza, Egypt.

Agricultural Research Center, Plant Pathology Research Institute, Giza, Egypt.

出版信息

Front Microbiol. 2022 May 19;13:893053. doi: 10.3389/fmicb.2022.893053. eCollection 2022.

Abstract

Nowadays, dairy products are considered a good matrix to deliver many functional substances either vital oils or probiotic cells. Two models of microcapsules were produced from co-encapsulation of extra virgin olive oil (EVOO) nanoemulsion or nanocomposite and synbiotic bacteria (maltodextrin with and ) using the freeze-drying technique. These models of microcapsules were added to stirred yogurt, and then its storage effect on microbiology, chemically, and sensory properties were evaluated for 21 days. The average droplet size and zeta potential distribution of EVOO nanoemulsion and nanocomposite were investigated. Also, oxidative stability, microencapsulation efficiency, release profile, and antioxidant activity were studied. The results showed that the average particle size of EVOO nanoemulsion and nanocomposite ranged between 416 and 475 nm, while zeta potential was -39.6 and -33.6 mV, respectively. The induction period of EVOO extracted from nanoemulsion and nanocomposite microcapsules models was 11.30 and 8 h. The microencapsulation efficiency of probiotic and EVOO was determined at 88.84 and 65.61% for the nanoemulsion microcapsules model, while the nanocomposite microcapsules model showed 98.49 and 72%. The two models of microcapsules have boosted the viability of probiotic bacteria inside stirred yogurt than free cells. Also, the presence of microcapsules did not affect the viability of stirred yogurt starter cultures, and high values for the total solid and protein were detected. Therefore, the results recommended that stirred yogurt is a good delivery carrier for highly antioxidant and healthy microcapsules of synbiotic EVOO nanoemulsion and nanocomposite.

摘要

如今,乳制品被认为是传递许多功能性物质(无论是香精油还是益生菌细胞)的良好基质。使用冷冻干燥技术,通过将特级初榨橄榄油(EVOO)纳米乳液或纳米复合材料与合生元细菌(含有和的麦芽糊精)共包封,制备了两种微胶囊模型。将这些微胶囊模型添加到搅拌型酸奶中,然后对其在微生物学、化学和感官特性方面的储存效果进行了21天的评估。研究了EVOO纳米乳液和纳米复合材料的平均液滴尺寸和zeta电位分布。此外,还研究了氧化稳定性、微胶囊化效率、释放曲线和抗氧化活性。结果表明,EVOO纳米乳液和纳米复合材料的平均粒径在416至475nm之间,而zeta电位分别为-39.6和-33.6mV。从纳米乳液和纳米复合材料微胶囊模型中提取的EVOO的诱导期分别为11.30小时和8小时。对于纳米乳液微胶囊模型,益生菌和EVOO的微胶囊化效率分别为88.84%和65.61%,而纳米复合材料微胶囊模型的微胶囊化效率分别为98.49%和72%。与游离细胞相比,这两种微胶囊模型提高了搅拌型酸奶中益生菌的活力。此外,微胶囊的存在不影响搅拌型酸奶发酵剂培养物的活力,并且检测到总固体和蛋白质的含量较高。因此,结果表明搅拌型酸奶是合生元EVOO纳米乳液和纳米复合材料的高抗氧化和健康微胶囊的良好递送载体。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d659/9161547/d5bb43bedc8f/fmicb-13-893053-g0001.jpg

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