Effects of high-pressure treatment on the extraction yield, phenolic content and antioxidant activity of litchi (Litchi chinensis Sonn.) fruit pericarp
Effects of high-pressure treatment on the extraction yield, phenolic content and antioxidant activity of litchi (Litchi chinensis Sonn.) fruit pericarp
复制标题
DOI：
10.1111/j.1365-2621.2008.01768.x
复制
发表时间：
2009-05-01
影响因子：
3.3
通讯作者：
Jiang, Yueming
中科院分区：
文献类型：
--
作者：
Prasad, Nagendra K.;Yang, Bao;Jiang, Yueming
高压萃取法是一种很有发展前途的技术，用于荔枝果肉中生物活性物质的提取。考察了溶剂、乙醇浓度（35-95，v/v）、料液比（1：25-1：100，w/v）、酸性介质、萃取压力（200-500 MPa）、萃取时间（2.5-30 min）和萃取温度（30-90 ℃）等因素对萃取效果的影响。考察了HPE样品的提取率、总酚含量、1，1-二苯基-2-苦肼基自由基清除能力和超氧阴离子清除能力，并与超声提取和常规提取样品进行了比较。与其他提取方法相比，HPE的应用获得了更高的提取率。但不同提取物的总酚含量和抗氧化活性差异不显著（P > 0.05）。与传统的提取方法相比，HPE具有更高的提取效率，提取率更高，提取时间更长。
As a promising technique, high-pressure extraction (HPE) method was used to extract bioactive compounds from litchi fruit pricarp. The study involved in different experimental factors such as solvent, ethanol concentration (35-95, v/v), material to solvent ratio (1:25-1:100, w/v), acidic medium, extraction pressure (200-500 MPa), time (2.5-30 min) and temperature (30-90 degrees C). The extraction yield, total phenolic contents, 1,1-diphenyl-2-picrylhydrazyl radical scavenging activity and superoxide anion scavenging capability of the HPE sample were examined and then compared with those of ultrasonic extraction and conventional extraction samples. The application of HPE obtained higher extraction yield compared to other extraction methods. However, there were no significant differences (P > 0.05) in the total phenolic content and the antioxidant activities among these various extractions. Compared with some conventional extraction method, the HPE exhibited higher extraction efficiency in terms of higher extraction yield and extraction time.