May 2017

Biological and antioxidant activity of Gunnera tinctoria (Nalca)

The endemic Chilean edible plant Gunnera tinctoria (Nalca) is highly appreciated in the south of Chile by the small farmers. Nevertheless, no background exists about his secondary metabolites. In the present study, in the leaf from G. tinctoria was investigated the content of bioactive compounds like coumaric acid, ascorbic acid and total phenols; the antioxidant capacity was evaluated by...

Author(s): Pedro Zamorano, Benjamín Rojano, Marcela Morales, Haroldo Magariños, Patricio Godoy and Ociel Muñoz

May 2017

Optimization of enzyme assisted extraction of polysaccharides from Poria cocos

Water-soluble polysaccharide was isolated from Poria cocus by enzyme-assisted method using orthogonal methodology. By single factor test and orthogonal group, the extraction conditions of water-soluble polysaccharide were investigated, such as liquid-solid ratio, temperature, time and pH. The optimum conditions for single factor were as follows Enzyme concentration (%), Extraction temperature oC, Extraction time/h,...

Author(s): Ashfaque A. Khaskheli, Shahzor G. Khaskheli, Ying Liu, Saghir A. Sheikh, Yan-Feng Wang, Aijaz H. Soomro, Xiaojiu Tian, Mamoun A. Homaida and Wen Huang