咖啡果皮与不同来源可溶性膳食纤维结构及性质比较研究  

Comparison of the Microstructure and Functional Properties of Soluble Dietary Fiber from Coffee Peel and Other Five Different Sources

作　　者：朱珂 董文江[2,4] 程金焕 胡荣锁[2,4] 何红艳[3] 陈小爱 龙宇宙[2] 黄家雄 ZHU Ke;DONG Wenjiang;CHENG Jinhuan;HU Rongsuo;HE Hongyan;CHEN Xiaoai;LONG Yuzhou;HUANG Jiaxiong(College of Food and Wine,Ningxia University,Yinchuan,Ningxia 750021,China;Spice and Beverage Research Institute,Chinese Academy of Tropical Agricultural Sciences,Wanning,Hainan 571533,China;Institute of Tropical and Subtropical Cash Crops,Yunnan Academy of Agricultural Sciences,Baoshan,Yunnan 678000,China;Key Laboratory of Suitability Processing and Quality Control of Characteristic Tropical Crops,Wanning,Hainan 571533,China)

机构地区：[1]宁夏大学食品与葡萄酒学院,宁夏银川750021 [2]中国热带农业科学院香料饮料研究所,海南万宁571533 [3]云南省农业科学院热带亚热带经济作物研究所,云南保山678000 [4]海南省特色热带作物适宜性加工与品质控制重点实验室,海南万宁571533

出　　处：《热带作物学报》2023年第2期394-404,共11页Chinese Journal of Tropical Crops

基　　金：海南省重点研发计划项目(No.ZDYF2021XDNY147);云南省创新引导与科技型企业培育计划项目(No.202104BI090015);中央级公益性科研院所基本科研业务费专项(No.1630142022010)。

摘　　要：本研究以咖啡果皮可溶性膳食纤维(CPSDF)与大豆、菊粉、大枣、燕麦、芹菜5种市售可溶性膳食纤维为原料,系统分析了6种可溶性膳食纤维的粒径、单糖组成、微观结构、理化性质及功能特性。结果表明:CPSDF的粒径分布较宽,均一性弱于其余5种可溶性膳食纤维,共检测出10种单糖组分;红外光谱和扫描电镜结果表明,不同来源可溶性膳食纤维具有相似的光谱分布,但特征波段的强度略有不同,且微观结构也有差异。X-射线衍射和热重分析表明,6种样品结晶度不同,CPSDF结晶度最小(38.84%),但其热稳定性优于其他5种样品。CPSDF的持油性为(2.18±0.03)mg/g,与其余5种膳食纤维样品无显著差异;CPSDF的溶解性为90.9%,低于其余5种可溶性膳食纤维样品;CPSDF的亚硝酸盐吸附能力显著优于其他5种样品,吸附量为7.93 mg/g。本研究结果可为咖啡果皮的开发利用提供理论基础,为咖啡果皮可溶性膳食纤维的高值化利用提供理论支撑。In this study,the soluble dietary fiber of coffee peel and other five commercially available soluble dietary fibers obtained from soybean,inulin,jujube,oat,and celery were used as experimental materials.The particle size dis-tribution,monosaccharide composition,microstructure,physico-chemical properties,and functional characteristics were compared analyzed.Results indicated that the particle size distribution of soluble dietary fiber in coffee peel was wider,and the homogeneity was relatively poorer than that of the other five soluble dietary fibers,but its monosaccharide composition was relatively rich,and a total of 10 kinds of monosaccharides were detected.Fourier transform infrared spectroscopy showed different samples had similar spectral characteristics,but a slightly different intensity response of characteristic bands.X-ray diffraction and differential scanning calorimetry results demonstrated that the crystalline of soluble dietary fiber from coffee peel was lower(38.84%)than that of other samples,but exhibited excellent thermal stability.The solubility and oil holding capacity of soluble dietary fiber in coffee peel was 90.9%and(2.18±0.03)mg/g,respectively.The nitrite absorption capacity of soluble dietary fiber in coffee peel was 7.93 mg/g,which was significant higher that of the other samples.This study could provide theoretical basis for high value utilization and product devel-opment of coffee peel resource.

关 键 词：咖啡果皮 可溶性膳食纤维 微观结构 功能特性 

分 类 号：TS273[轻工技术与工程—农产品加工及贮藏工程] TS209[轻工技术与工程—食品科学与工程]