菊芋花色素提取条件的研究

Study on Conditions for Extracting Pigment from Helianthus tuberosus

[目的]探索提取菊芋花色素的最佳条件。[方法]针对不同条件下菊芋花色素的提取进行了单因素和正交试验,对单因素试验数据进行灰色关联度分析,并利用神经网络预测正交试验并和试验值比较。[结果]菊芋花色素的最佳提取条件为温度60℃,料液比1∶18 g/m L,浸提时间5.0 h,其中浸提温度对提取花色素的影响最大,料液比次之,浸提时间对浸提效果的影响最小;同时提出了减少试验工作量的方法。[结论]该研究可为菊芋花色素的提取提供科学依据。

[Objective] The aim was to explore the optimal conditions for extracting pigment from Helianthus tuberosus flower. [Method]Single factor and orthogonal test was conducted on extraction of Helianthus tuberosus flower pigment under different conditions. Grey relational degree analysis was conducted on data of single factor test. Orthogonal test was predicted by neural network and was compared with trial value.[Result]The optimal conditions were obtained as follows： temperature 60 ℃,solid-liquid ratio 1∶ 18 g/m L,extraction time 5. 0 h. As for influence degree,temperature was the most influential on pigment extraction,solid-liquid ratio took the second place,followed by extraction time. Method for reducing the amount of work was proposed. [Conclusion] The study can provide scientific basis for extraction of Helianthus tuberosus flower pigment.