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《Journal of Anhui Agricultural Sciences》 2008-07
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Study on the De-coloration of Chicory Inulin by Active Carbon Method

WU Hong-xin et al (Grassland Research Institute,Chinese Academy of Agricultural Sciences, Hohhot,Inner Mongolia 010020)  
[Objective]The study aimed to seek for an optimum technology for decoloring chicory inulin.[Method]The decoloration experiment was conducted on chicory inulin solution by active carbon and the optimum decoloration condition was confirmed through single factor and orthogonal experiments.With glucose as standard,the total sugar was determined by anthrone colorimetry and the reducing sugar was determined by 3,5-dinitro-salicylic acid(DNS) method.[Result]The factors influencing decoloration by active carbon in order were decoloration timedecoloration temperatureactive carbon dosage.The maximum absorption wavelength of coloured matters in extracts was 550 nm,under which the optimum technological condition was confirmed through orthogonal experiment,i.e.temperature of 60 ℃,active carbon dosage of 20 g/L and time of 40 min.Under this technological condition,the determined average content and average decoloration rate of inulin were 21.287 8 mg/ml and 60.098% resp.,with relative standard deviation of 0.139 8%.[Conclusion]The effect of decoloring inulin extracts by active carbon method was better.
【Fund】: 优质高效草食畜牧业综合技术研究及产业化(2002K01-G5-1)
【CateGory Index】: S567.239
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