食品与发酵工业2026，Vol.52Issue(8)：122-131,10.DOI:10.13995/j.cnki.11-1802/ts.043442
玫瑰茄花色苷微胶囊的制备及其特性表征
Encapsulation effect and properties of spray-dried microencapsulated Hibiscus sabdariffa L.anthocyanins
摘要
Abstract
The calyx of roselle(Hibiscus sabdariffa L.)contains high levels of anthocyanins(HSA),but their utilization is limited due to instability.In this study,gum arabic,whey protein,and chitosan hydrochloride were used as composite wall materials to prepare roselle(Hibiscus sabdariffa L.)anthocyanin microcapsules(HSAM)through single-factor and response surface optimization experiments.The physicochemical properties and stability of HSAM were characterized by scanning electron microscopy(SEM),laser particle size a-nalysis,Fourier transform infrared spectroscopy,X-ray diffraction(XRD),and thermogravimetric analysis(TGA).Results showed that the optimal spray-drying conditions for HSAM were as follows:core-to-wall ratio of 1∶4,wall material concentration of 1.2％,and inlet air temperature of 171 ℃.Under these conditions,the encapsulation efficiency of HSAM reached(98.17±1.03)％,with a moisture content of(3.24±0.18)％.SEM analysis revealed that HSAM particles were uniform in size and significantly smaller than HSA,with 47.98％of particles having a diameter below 10 μm.The bulk density of HSAM powder was 0.259 g/cm3,the angle of repose was(44±0.5)°,and the viscosity was low,indicating good flowability.The composite encapsulant formed a new stable powder crystal structure with HSA and led to a reduction in the infrared spectral peaks of HSA,causing a shift in the XRD diffraction peaks of HSAM and a new diffraction peak appearing at 31.96°.TGA and photothermal stability studies demonstrated that HSAM exhibited improved heat resistance and UV-light stability,making it suitable for processing at temperatures below 150 ℃.This study provides new insights into encapsulation methods and processing parameters for the spray-drying of roselle anthocyanin microcapsules,facilitating the value-added utilization of roselle as an economically important crop.关键词
玫瑰茄/花色苷/喷雾干燥/微胶囊/粉体特性Key words
Hibiscus sabdariffa/anthocyanins/spray-dried/microcapsule/powder characteristics引用本文复制引用
刘永吉,叶江美,柯国良,陈冰英,王思菊,郭红辉,刘根梅..玫瑰茄花色苷微胶囊的制备及其特性表征[J].食品与发酵工业,2026,52(8):122-131,10.基金项目
广东省普通高校重点领域专项项目(2024ZDZX2071) （2024ZDZX2071）
广东省基础与应用基础研究基金项目(2021B1515140057) （2021B1515140057）
广东省驻镇帮镇扶村农村科技特派员项目(KTP20210145) （KTP20210145）
国家级大学生创新创业训练计划项目(202410576003) （202410576003）
