Balunkeshwar Nayak
University of Maine
USA
Title: Techniques for the extraction of bioactive compounds from plants
Biography
Biography: Balunkeshwar Nayak
Abstract
The “ideal” extraction method must provide high extraction rates and should be non-destructive and time saving. In addition, as per the environmental requirements and economic impact, the food and nutraceutical industry prefer green extraction and processing to ensure a safe and high quality extract/product. Recently, more rapid and automated methods including supercritical fluid extraction (SFE), pressurized liquid extraction (PLE) or microwave-assisted extraction (MAE), ultrasound extraction (UAE) and accelerated solvent extractor (ASE) have been used. The above extraction methods are advantageous compared to conventional methods because they can be carried out in the absence of light and oxygen, cope with the demand for a reduction in organic solvent consumption and improve the extraction time due to the possibility of working at elevated temperatures or pressures in inert atmospheres. The use of bioactive compounds in different commercial sectors such as pharmaceutical, food and chemical industries signifies the need of the most appropriate and standard method to extract these active components from plant materials. Along with conventional methods, numerous new methods have been established but till now no single method is regarded as standard for extracting bioactive compounds from plants. The efficiencies of conventional and non-conventional extraction methods mostly depend on the critical input parameters; understanding the nature of plant matrix; chemistry of bioactive compounds and scientific expertise. This talk is aimed to discuss different extraction techniques along with their basic mechanism for extracting bioactive compounds from medicinal plants.