Physicochemical Properties of Spray-Dried Microcapsules Prepared with Gamma Oryzanol Pre-encapsulated in Zein Nanoparticles and Maltodextrin as a Drying Agent

IF 5.3 2区 农林科学 Q1 FOOD SCIENCE & TECHNOLOGY
Ubonphan Rodsuwan, Savitri Vatanyoopaisarn, Benjawan Thumthanaruk, Krittiya Thisayakorn, Dudsadee Uttapap, Qixin Zhong, Vilai Rungsardthong
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Abstract

Gamma oryzanol (GO) is a bioactive compound found naturally in rice bran oil and is known for its antioxidant properties. However, GO is sensitive to environmental stresses such as light, oxygen, and temperature. Encapsulation is employed to enhance the stability and dispersibility of the GO. The present work was aimed at producing and characterizing spray-dried microcapsules of GO facilitated by pre-encapsulation in zein nanoparticles and maltodextrin (MD) as a drying agent. Pre-encapsulation of GO was conducted by liquid–liquid dispersion at the highest homogenization speed of 15,000 rpm, leading to GO-loaded zein nanoparticles (GOZNs) with a Z-average diameter of 234 nm. The effects of MD concentration (0, 50, 100, and 150% mass of zein) and inlet air temperature (120, 140, and 160 °C) on physicochemical properties of the spray-dried powders were investigated. The highest retention of 84.97 ± 2.39% was observed at a zein to MD to GO mass ratio of 1:0.5:0.3 and an inlet air temperature of 160 °C. Increments in both inlet air temperature and MD concentration reduced the hygroscopicity of spray-dried powders, while the addition of MD significantly improved the solubility of spray-dried powders. The primary spray-dried particles exhibited irregular shapes, varied dimensions, surface shrinkages, dents, and absence of cracks. The retention of GO in spray-dried powders was 87.06 ± 0.42% and 77.89 ± 0.81% after storage at 4 °C for 6 and 12 months, respectively, which was significantly higher than 59.14 ± 1.37% and 37.71 ± 0.72% for pristine GO. The improved storage stability of GO and improved powder solubility may allow future applications in the food and beverage industries.

Graphical Abstract

Abstract Image

麦芽糖糊精作为干燥剂,玉米蛋白纳米颗粒预包封γ -谷米醇制备喷雾干燥微胶囊的理化性质
谷米醇(GO)是一种天然存在于米糠油中的生物活性化合物,以其抗氧化特性而闻名。然而,氧化石墨烯对光、氧和温度等环境胁迫敏感。采用包封的方法增强氧化石墨烯的稳定性和分散性。以玉米蛋白纳米颗粒和麦芽糖糊精(MD)为干燥剂,进行喷雾干燥氧化石墨烯微胶囊的制备和表征。采用液液分散的方法对氧化石墨烯进行预包封,最高均质速度为15,000 rpm,得到平均z直径为234 nm的氧化石墨烯玉米蛋白纳米颗粒。研究了MD浓度(0、50、100和150%玉米蛋白质量)和进风温度(120、140和160℃)对喷雾干粉理化性质的影响。当玉米蛋白与氧化石墨烯的质量比为1:0.5:0.3,入口温度为160℃时,保留率最高,为84.97±2.39%。进气温度和MD浓度的增加都降低了喷雾干粉的吸湿性,而MD的加入则显著提高了喷雾干粉的溶解度。喷雾干燥的初级颗粒形状不规则,尺寸变化,表面收缩,凹痕和无裂纹。4℃贮存6个月和12个月后,氧化石墨烯喷雾干粉的保留率分别为87.06±0.42%和77.89±0.81%,显著高于原始氧化石墨烯的59.14±1.37%和37.71±0.72%。氧化石墨烯的储存稳定性和粉末溶解度的提高可能会使其在食品和饮料行业的未来应用成为可能。图形抽象
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来源期刊
Food and Bioprocess Technology
Food and Bioprocess Technology 农林科学-食品科技
CiteScore
9.50
自引率
19.60%
发文量
200
审稿时长
2.8 months
期刊介绍: Food and Bioprocess Technology provides an effective and timely platform for cutting-edge high quality original papers in the engineering and science of all types of food processing technologies, from the original food supply source to the consumer’s dinner table. It aims to be a leading international journal for the multidisciplinary agri-food research community. The journal focuses especially on experimental or theoretical research findings that have the potential for helping the agri-food industry to improve process efficiency, enhance product quality and, extend shelf-life of fresh and processed agri-food products. The editors present critical reviews on new perspectives to established processes, innovative and emerging technologies, and trends and future research in food and bioproducts processing. The journal also publishes short communications for rapidly disseminating preliminary results, letters to the Editor on recent developments and controversy, and book reviews.
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