Extraction and the application of polysaccharide from b.cerosissima mcclure leaves
Orthogonal experimental method has been used to obtain the optimum conditions of polysaccharide extracted from B.cerosissima McClure leaves. The anti-browning and antioxidanthe function of the polysaccharide has also been studied. The results showed that the best conditions for the extraction can be written as: ratio of material to solution (w∶v) 1∶75, extracted time 2 h, temperature 80 ℃. The factors influencing extraction of flavonoids were in order as follows: liquid-solid temperaturethat extracted time. The polysaccharide could prevent browning of fruits and decrease peroxide in vegetable oil.