Extraction conditions and antioxidant activities of the extract of pineapple peel by ultrasonic

2018 International Conference of Green Buildings and Environmental Management

土木建筑工程;生态环境科学

Liu, Sheng-Hui^1 ; Liu, Yu-Ge^1 ; Zhang, Xiu-Mei^1

Key Laboratory of Tropical Fruit Biology, Ministry of Agriculture, South Subtropical Crop Research Institute, Chinese Academy of Tropical Agricultural Science (CATAS), Zhanjiang, Guangdong

524091, China^1

关键词: Anti-oxidant activities;    Ethanol solutions;    Experimental parameters;    Extraction conditions;    Extraction time;    Natural antioxidants;    Orthogonal design;    Ultrasonic assistants;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/186/4/012038/pdf
DOI  :  10.1088/1755-1315/186/4/012038

来源: IOP

【 摘 要 】

In the present work, a ultrasonic-assistant method was used for the extraction of antioxidants (total phenol and total flavonid) in pineapple peel. The experimental parameters, including extraction time, the ratio of solution to peel and the concentration of solvent on the contents of total phenol and total flavonid were investigated. Orthogonal designs were also used to test the results of single experiments. Based on the contents of total phenol and total flavonid, the optimal ultrasonic conditions for extraction were taken as follows: extracting 65 min with 75% ethanol solution by ultrasonic, and the solution to peel ratio was 10:1. The antioxidant activities of the extract were also investigated. The research here indicated that pineapple was rich in natural antioxidants and possessed excellent antioxidant activities. It also provided application for the waste produced in pineapple processing.