Pak J Biol Sci. 2021 Jan;24(1):99-111. doi: 10.3923/pjbs.2021.99.111.
Red onions are one of the most consumed vegetable crops in Egypt, their peel is rich in antioxidants that reduce the risk of diabetes and weight is lost. The study aimed to extract bioactive compounds present in Egyptian Red Onion Peels Waste (ROPE), increasing their efficiency and protecting them using nano-encapsulation as new emerging technology.
Extraction of the bioactive compounds in the Egyptian red onion peels was carried out to study their antioxidant activity before and after nano-emulsions and micro-capsules, their physical and morphological characteristics with their different nano-forms and their application in sponge cake products. The biological evaluation was also studied using rats and statistical analysis.
The results showed that the ethanol extracts high content of bioactive compounds compared to water extract and that the use of nano-technique as a new emerging technology in form of nano-emulsion using sodium alginate with diameter size between 8.3-13.6 nm. Results also indicated that there was an improvement in the efficiency of antioxidant activity at high-temperature degrees during baking, with a melting point of up to 223.64°C, with an improvement in the blood sugar levels of diabetic rats and a significant decrease in body weight.
Nano treatments had a protective effect on liver, safety towards kidneys, lowering blood sugar, improving the efficiency comparing to the other samples and were more acceptable to the consumer.
红洋葱是埃及最常食用的蔬菜作物之一，其外皮富含抗氧化剂，可降低糖尿病和体重减轻的风险。本研究旨在提取埃及红洋葱皮废物（ROPE）中存在的生物活性化合物，通过纳米封装技术提高其效率并对其进行保护，纳米封装技术是一种新兴的新技术。
对埃及红洋葱皮中的生物活性化合物进行提取，以研究其在纳米乳液和微胶囊前后的抗氧化活性，以及其不同纳米形式的物理和形态特征及其在海绵蛋糕产品中的应用。还使用大鼠进行了生物评价和统计分析。
结果表明，与水提取物相比，乙醇提取物中含有更高含量的生物活性化合物，并且纳米技术作为一种新的新兴技术，以纳米乳液的形式使用海藻酸钠，其直径尺寸在 8.3-13.6nm 之间。结果还表明，在烘焙过程中高温下抗氧化活性效率有所提高，熔点高达 223.64°C，糖尿病大鼠的血糖水平有所改善，体重明显减轻。
纳米处理对肝脏具有保护作用，对肾脏安全，降低血糖，与其他样品相比效率更高，更受消费者欢迎。
