热带农业科学2025，Vol.45Issue(11)：47-51,5.DOI:10.12008/j.issn.1009-2196.2025.11.007
不同乙醇浓度中火龙果皮红色素的降解动力学
Degradation Kinetics of Red Pigment from Pitaya Peel in Different Ethanol Concentrations
摘要
Abstract
To determine the degradation pattern of the red pigment from pitaya peel at different ethanol concentrations and predict the stability of alcoholic and nonalcoholic beverage products containing this pigment,the red pigment(from Jindu No.1 pitaya variety)was extracted with a 70%ethanol aqueous solution,concentrated,and separated with AB-8 macroporous resin.The absorbance values of the red pigments in ethanol concentrations of 0%,10%,20%,30%,40%,50%,and 60%were meas-ured.The results showed that the AB-8 macroporous resin effectively enhanced the concentration of the red pigment from pitaya fruit peel.The color value of the purified sample(AB-8)was 38 times greater than that of the control sample(CTR).Under the conditions of 25℃and pH 4.0,the degradation of the red pigment from pitaya peels in different ethanol concentra-tions followed a first-order degradation reaction.As the ethanol concentration increased,the degradation reaction rate K in-creased,and the half-life decreased.These results can be used to predict the shelf-life of pitaya beverage products.关键词
火龙果/果皮/火龙果皮红色素/乙醇浓度/火龙果色素分离/动力学参数Key words
pitaya/pitaya peel/red pigment of pitaya peel/ethanol concentrations/pitaya pigment separation/kinetics分类
农业科技引用本文复制引用
刘洋洋,李如一,彭芍丹,陆旭丽,曹玉坡,李积华..不同乙醇浓度中火龙果皮红色素的降解动力学[J].热带农业科学,2025,45(11):47-51,5.基金项目
海南省自然科学基金项目(No.321MS0797) （No.321MS0797）
中央级公益性科研院所基本科研业务费专项(No.1630012025202). （No.1630012025202）
