中文摘要：

以水／乙醇为溶剂，采用超声波技术从废弃的香蕉皮中提取天然色素。超声波提取香蕉皮色素的较佳工艺条件为：超声功率360W，提取时间11min，乙醇体积分数40％，液固比20mL／g，超声一次（11min），初始温度50℃。在优化工艺条件下提取的香蕉皮色素具有较好的耐热水稳定性及耐酸碱稳定性，采用直接染色和媒染染色可得到不同颜色的毛织物。

英文摘要：

Colorants in banana peel is extracted by ultrasonic wave and the optimum extraction condi- tions are ultrasonic wave power of 360 W, extraction time of 11 min, volume fraction of ethanol 40%, ratio of solution to solid of 20 mL/g, extraction for one time and initial temperature of 50 ℃. The pigment extracted from banana peel at the optimized condition is stable to hot water, acid or alkali solution. The extracted colorants from banana peel can be used in wool dyeing with direct, aluminum or iron pre-mor- dant methods.