葵花籽油微乳提取玉米黄粉中天然色素的研究

Study on the Extraction of Natural Pigment from Maize Yellow Powder with Sunflower Oil Microemulsions

摘要:

研究食品级的葵花籽油微乳提取玉米黄粉中天然色素的应用。以葵花籽油微乳为提取剂，在单因素试验基础上，以固液比、温度和时间为评价指标，利用三因素三水平的响应面分析法优化出葵花籽油微乳提取玉米黄色素的最佳工艺条件，建立了回归模型，并对提取后的葵花籽油微乳进行性能的表征。结果表明，影响色素提取效果的因素主次顺序是固液比>温度>时间；根据响应面和SAS软件优化出的结果，最佳提取条件取为：固液比1:42、温度71 ℃、时间1.5 h，在此条件下的实际提取得率为0.34 mg/g，与预测的理论值相近，表明该模型能够真实的反应筛选条件对色素提取得率的影响。提取后葵花籽油微乳的性状良好，粒径变化不大，稳定性较好。

Abstract:

The food-grade microemulsions and its application in the extraction of natural edible pigment were investigated in this study. Based on the single factor experiment, solid/liquid ratio, temperature and extraction time were chosen as the factors to optimize technological conditions by design three-level response surface experiment. The optimum process conditions for extracting natural edible pigment from sunflower oil microemulsion were determined, and then the properties of the sunflower oil microemulsion were characterized after extracting. The results showed that the order of factors influencing the extraction rate of pigment was solid/liquid ratio > temperature > time. Using the response surface and SAS software to analyze the data, and the optimal extraction conditions were as follows: the ratio of solid to liquid 1:42, temperature 71 ℃, and time 1.5 h. The actual value of extraction rate of pigment was 0.34 mg/g under the optimal extraction conditions, which had no significant difference with the theoretical value. The sunflower oil microemulsion had good performance after extracting, and its particle size had no significant change and remained good stability.