3.The purification effect of five macroporous adsorptive resins on redcabbage pigment is studied in this paper,and the optimum resin type,adsorption temperature and adsorption time as well as the optimum eluting solvent and eluting temperature are hence determined.
5.The total DNA of red chinese cabbage was isolated from leaves,flow- ers,pods and seedlings by the method of trichloromethane-isopentyl alcohol -agarose moleculer sieve(Sepharose-4B)with the equipment supplied by a common laboratory.