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›› 2010, Vol. 44 ›› Issue (3): 17-21.

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Study on Solvent Extraction Technique of Limonium sinuatum Pigment Enhanced by Ultrasonic Wave

DING Lai-xin1, SONG Xian-liang2, BAI Yu2   

  1. 1. College of Science, Beijing Forestry University, Beijing 100083, China;2. College of Material Science and Technology, Beijing Forestry University, Beijing 100083, China
  • Received:2009-12-28 Revised:1900-01-01 Online:2010-05-30 Published:2010-05-30

Abstract: Extraction technique of the pigment from violet flowers of Limonium sinuatum were studied, including comparison between ultrasonic extraction and soak extraction, effect of extraction conditions on pigment, and the optium conditions were found by using orthogonal test. Experiments indicated that the efficiency of ultrasonic extraction was higher than soak extraction. The optimum conditions were as follows: ratio of petals to solvent 1:80-1:100(g:mL), solvent 60% ethanol (pH value 2) and ultrasonic extraction for 30 min at 40℃. Then red solid pigment was obtained through filtration, vacuum concentration, extracting by petroleum ether and lyophilization. The average yield of pigment was 15%, and color scale was E1 cm1%(540 nm)=36.55. Two spots, red and yellow were acquired using paper chromatography to separate pigments. Two components were deter mined by UV-Vis absorption spectra and the color reaction separately.The result showed that the pigment were mixture of anthocyanins and flavones.

Key words: flowers of Limonium sinuatum, pigment, extraction

CLC Number: