Microwave Extraction and Properties of Red Pigment from Salicornia europeaea
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Abstract:
The microwave extraction of the natural red pigment in the Salicornia europeaea and the pigment stability were investigated. The optimal conditions of microwave extraction were as follows: microwave power of 700 W, extraction time of 9 min, extraction temperature of 70 ℃, 50%(v/v) of ethanol, the ratio of material to ethanol of 1:50 (g/ml), the extraction temperature of 70 ℃, the extraction time of 1h, the microwave power of 700 W and the time of microwave treatment of 9 min. The achieved pigment showed high light stability and thermal stability within 50~60 ℃. The food additives showed little effects on the stability of the pigment. Besides, the pigment showed poor Na2SO3 tolerance capability but high H2O2 tolerance capability.
