The upper layer (2.5 ml) was mixed with deionised water (2.5 ml) and ferric chloride (0.5 ml, 0.1%), and the absorbance was measured at 700 nm against a blank. BHT, ascorbic acid and a-tocopherol were used as control agents.
The upper layer (2.5 ml)was mixed with deionised water (2.5 ml) and ferric chloride(0.5 ml, 0.1%), and the absorbance was measured at 700 nm againsta blank. BHT, ascorbic acid and a-tocopherol were used as controlagents.