不同品种柑橘皮渣膳食纤维构效关系比较  

Comparative Study on the Structure-Activity Relationship of Dietary Fiber from Different Varieties of Citrus Peel and Pomace

作　　者：陈贵婷 石凯欣 张珮珮 徐阳 潘思轶 CHEN Guiting;SHI Kaixin;ZHANG Peipei;XU Yang;PAN Siyi(Key Laboratory of Environment Correlative Dietology,Ministry of Education,Hubei Key Laboratory of Fruit&Vegetable Processing&Quality Control,College of Food Science and Technology,Huazhong Agricultural University,Wuhan 430070,China)

机构地区：[1]华中农业大学食品科学技术学院,环境食品学教育部重点实验室,果蔬加工与品质调控湖北省重点实验室,湖北武汉430070

出　　处：《食品科学》2023年第17期20-28,共9页Food Science

基　　金：财政部和农业农村部:国家柑橘产业技术体系资助(CARS-26-07B);中央高校基本科研业务费专项资金项目(2662020SPPY011);云南省重大科技专项(202102AE090054);湖北省重大科技专项(2022BBA0030)。

摘　　要：以柑橘(南丰蜜橘、秭归脐橙和沙田柚)果皮和果渣为原料,分别制备可溶性膳食纤维(soluble dietaryfiber,SDF)、不溶性膳食纤维(insoluble dietaryfiber,IDF)和总膳食纤维(total dietaryfiber,TDF),对比分析其含量、结构、理化性质和功能特性。结果表明:不同品种柑橘的果皮和果渣中TDF含量为19.96~44.26 g/100 g,其中橘皮、橘渣和柚渣的IDF/SDF比例与推荐摄入比例(2∶1)最为接近。所有膳食纤维样品均有明显的多糖特征结构,但单糖组成和微观结构不同。此外,柑橘果渣膳食纤维比果皮膳食纤维表现出更优异的理化性质和功能特性,其中柚渣膳食纤维总体表现最佳,尤其是柚渣SDF,其持水力为28.46 g/g,吸水膨胀力为29.07 mL/g,持油力为3.38 g/g,胆固醇吸附能力为22.56 mg/g(pH 7),亚硝酸盐吸附能力为911.59µg/g,葡萄糖吸附能力为2.64 mmol/g,葡萄糖透析延迟指数最高为28.78%(15 min)。综上,柑橘果皮和果渣是优质膳食纤维的来源,可作为功能性食品成分。本研究为进一步精细化利用柑橘膳食纤维、提高柑橘副产物附加值提供了理论依据。The contents,structures,physicochemical properties and functional characteristics of soluble dietaryfiber(SDF),insoluble dietaryfiber(IDF)and total dietaryfiber(TDF)from the peel and pomace of Nanfeng tangerine,Zigui navel orange and Shatian pomelo were compared and analyzed.The results showed that TDF contents in citrus peel and pomace ranged from 19.96 to 44.26 g/100 g,and IDF/SDF ratios in tangerine peel,tangerine pomace and pomelo pomace were the closest to the recommended dietary ratio(2:1).All dietaryfiber samples had obvious characteristic structures of polysaccharides,but their monosaccharide compositions and microstructures were different.Citrus pomace dietaryfiber exhibited superior physicochemical properties and functional characteristics to peel dietaryfiber,with pomelo pomace dietaryfiber showing the best overall performance.Notably,pomelo pomace SDF had a water-holding capacity(WHC)of 28.46 g/g,a water swelling capacity(WSC)of 29.07 mL/g,an oil-holding capacity(OHC)of 3.38 g/g,a cholesterol adsorption capacity(CAC)of 22.56 mg/g,a nitrite ion adsorption capacity(NIAC)of 911.59µg/g,a glucose adsorption capacity(GAC)of 2.64 mmol/g,and a glucose dialysis retardation index(GDRI)of 28.78%(15 minutes).In conclusion,citrus peel and pomace are good sources of high-quality dietaryfiber and can be used as functional food components.This study can provide a theoretical basis for further refining the application of citrus dietaryfiber and improving the added value of citrus by-products.

关 键 词：柑橘皮渣 膳食纤维 结构 理化性质 功能特性 

分 类 号：TS201.2[轻工技术与工程—食品科学]