lin91957
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Posted: Mon 2:38, 14 Feb 2011 Post subject: UGG Boots Outlet Chestnut shell pigment ultrasonic |
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Chestnut shell pigment extraction method of ultrasonic
Large. Since the NC used in the experiment the use of ultrasonic cleaning the temperature range 20-80Cc, also have energy-saving considerations, therefore difficult to select the higher temperature test point test. With the increase of extraction agent, pigment extraction increased first then decreased. According to Table 4 in the results, the extraction temperature and extraction time on extraction yield of pigment was significantly, ultrasonic power and solid to liquid ratio on the extraction rate was not significant. According to the optimal level orthogonal test launch of the verification tests, pigment extraction rate can reach 8.95%. And Table 4,[link widoczny dla zalogowanych], compared with 16 groups of test results is indeed the best. 2.3 Extraction Weigh 4g determine the number of chestnut shell powder, according to the best ratio of solid to liquid ratio of 1:15 for a one l98 Agricultural Sciences 2007 four cases into 40% ethanol solution, the extraction of ultrasonic power 500W , temperature 70 ��,[link widoczny dla zalogowanych], after extracting 4 times, each time for 90min, the extract J�� L = 277nm absorbance was measured at A, the results in Table 5. Table 3 Extraction of chestnut shell pigment L6 (4l range analysis of orthogonal design and the results of K121.11414.91117.17420.89421.867 / (221.29618.42320.34521.74821.43421.68623.47323.24421.69221 .396 / (421.80729.09625.14021.56921.206k15.2793.7284.2935.2235.467k25.3244.6065.0865.4375.358k5.4215.8685.8115.4235.3495.4527.2746. 2855.3925.301 range R0.1733.5461.9920.2140.165 factors (the main one): temperature> extraction time> liquid ratio> optimal level of ultrasonic power: 7O �� 90min1: 15500W Table 4 chestnut shell pigment extraction conditions orthogonal analysis of variance Note: D5 (3,3): 9.23,01 (3,3) = 29.46. Table 5 chestnut shell pigment extraction times of ultrasonic extraction on the extraction rate of the table 5, numerical display, when the extracted 2 times, the extraction of pigment extraction yield of 89.9% of the total, and the pigment extraction was 11.64%. the extraction of the third volume of only 8.27% of total extraction, If the extract 3 times, from the energy, time and extraction solvent consumption economic point of view, there is not much practical significance. Therefore, the extraction of 2 has been completely satisfactory. 3 Conclusion of 40% ethanol solution as extraction solvent, with ultrasound chestnut shell pigment extraction method, test results showed that the ultrasonic extraction of chestnut shell pigment for the primary and secondary factors: temperature> extraction time> liquid ratio> ultrasonic power. The best extraction conditions were: l5 times of use 40% ethanol, ultrasonic power 500W,[link widoczny dla zalogowanych], reaction temperature 70 ��, extraction 2 times 90min,[link widoczny dla zalogowanych], pigment extraction rate of 11.64%. wears comparison with the traditional extraction,[link widoczny dla zalogowanych], ultrasonic extraction rate of 5.34% pigment, and the traditional extraction time for ultrasound-assisted extraction was extracted 2 times, saving energy and technology from the perspective of economy, ultrasonic extraction method is superior to the traditional extraction method. Therefore, the ultrasonic extraction of chestnut shell pigment extraction speed, saving energy and other advantages, is an ideal approach.
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