关键词: 生育时期, 生育时期

Abstract: Studies on microwave extraction of pectin in Pyracantha fortuneana residue which red and yellow pigments had been extracted completely were made with hydrochloric acid, and the qualities of extracted pectin were tested. The single factor test included the pH of extraction solvent, solid-liquid ratio, extraction temperature, microwave watt, extraction time and extraction times. The optimal conditions of extraction technology were discovered by orthogonal test L9(34). Results showed that the optimal conditions of microwave extraction were as follows: the pH of extraction solvent was 2, the solid-liquid ratio 1:9, the microwave watt 300 W, extraction time 2.5 min, and extraction 2 times. The extraction ratio was 86.7% , and the yield was 7.55%. Compared with the conventional acid hydrolysis method, this microwave method had advantages of less extraction times and higher extraction ratio. The microwave method was better than the conventional acid hydrolysis method. The qualities of extracted pectin accorded with Chinese standard QB 2484—2000, and its nutritious elements were abundant.