摘要
探讨了应用粉末活性炭的吸附能力纯化麦麸中阿魏酸粗提液。结果表明,粉末活性炭对阿魏酸具有一定的吸附能力,在浓度小于1.6mg/mL时具有较高的吸附率;pH在2.0～8.0范围内,粉末活性炭对阿魏酸的吸附不受pH的影响;随着温度的升高,粉末活性炭的吸附率逐渐增大;而吸附时间对粉末活性炭的吸附影响较小。乙醇、乙酸乙酯、盐酸只能将活性炭所吸附的少部分阿魏酸洗脱出来,而60℃、2.0%的NaOH溶液能洗脱出大部分被吸附的阿魏酸。TLC结果表明,粉末活性炭对麦麸中阿魏酸粗提液有一定的纯化作用。
Powdered activated carbon was used to purify ferulic acid reagent in the solution. The results showed that powdered activated carbon had certain capacity for adsorbing ferulic acid. When the concentration was less than 1. 6mg/mL,it had a high adsorption rate at pH 2. 0～8. 0. As the temperature increased,powdered activated carbon adsorption rate increased. The adsorption time had little impact on adsorption rate. 60℃ and 2. 0% of NaOH could desorb almost 85% of the adsorbed ferulic acid,whereas alcohol,ethyl acetate and hydrochloric acid could desorbe less than 25% of the adsorbed ferulic acid. The results of TLC showed that powdered activated carbon had certain effect on purification of ferulic acid from wheat bran.
出处
《食品工业科技》
CAS
CSCD
北大核心
2011年第12期310-314,共5页
Science and Technology of Food Industry
基金
教育部大学生创新性实验项目(091062627)
四川省教育厅重点项目(09ZA081)
四川省人事厅留学人员择优项目专项(川人函[2008]488号)
关键词
粉末活性炭
麦麸
阿魏酸
纯化
powdered activated carbon
wheat bran
ferulic acid
purification
