芦笋膳食纤维品质分析及抗氧化性研究  

Quality Analysis and Antioxidant Research of Dietary Fiber from Asparagus

作　　者：杨晓宽[1] 李汉臣[1] 张建才[1] 吴孟爽[1] 常学东[1] 

机构地区：[1]河北科技师范学院食品科技学院,河北秦皇岛066004

出　　处：《中国食品学报》2013年第10期205-212,共8页Journal of Chinese Institute Of Food Science and Technology

基　　金：国家星火计划项目(No.2010GA620001);河北省科技支撑项目(No.12227168);秦皇岛市科技支撑项目(No.2012022A006)

摘　　要：通过对酶碱法工艺提取的芦笋老茎膳食纤维[包括可溶性膳食纤维(SDF)、不溶性膳食纤维(IDF)和总膳食纤维(SDF∶IDF=1∶2)]常规化学成分、持水力、膨胀力、持油力、阳离子交换能力、胆固醇吸附能力、吸收亚硝酸根离子能力及抗氧化性的测定以及3组膳食纤维各指标的分析,不同膳食纤维特性的比较,结果表明:3组膳食纤维的理化特性及抗氧化性都存在显著性差异。持油力和持水力由高到低的顺序为IDF、TDF、SDF。IDF和SDF持油力分别达5.59 g/g和2.05 g/g,IDF和SDF持水力分别达8.80 g/g和3.47 g/g。溶胀力、阳离子交换能力、胆固醇吸附量和亚硝酸根离子吸附量由高到低的顺序为SDF、TDF、IDF。SDF和IDF溶胀力分别达4.56 mL/g和3.40 mL/g,SDF和IDF阳离子交换能力分别达0.77 mmol/g和0.27 mmol/g,SDF和IDF胆固醇吸附量分别达20.71 mg/g和15.69 mg/g,SDF和IDF亚硝酸根离子吸附量分别达7.14 mg/g和3.80 mg/g。抗氧化能力由高到低的顺序为SDF、TDF、IDF。SDF羟基自由基(-OH)清除能力、DPPH·自由基清除能力、H2O2清除能力、对金属的螯合力、还原能力、总抗氧化能力分别为93.33%,14.23%,68.34%,90.11%,91.56%,93.33%。酶碱法提取的芦笋老茎膳食纤维特性优良,适合作为保健休闲食品的添加剂。Through the enzyme alkaline extraction of dietary fiber from old stalk of asparagus, including soluble dietary fibre（SDF）, insoluble dietary fibers（IDF） and total dietary fiber（SDF：IDF=1：2） General chemical composition, water holding capacity, expansion of power, holding oil power, cation exchange capacity, cholesterol absorption capacity, the capacity of nitrite ions absorption and determination of antioxidant research, and three groups of data analysis of the resuits of the determination of dietary fiber each index, compares three different characteristics of dietary fiber, found three groups of physical and chemical properties of dietary fiber, as well as there are significant differences in oxidation resistance, oil holding capacity and water holding capacity of the order from high to low is IDF, TDF, SDF. IDF and SDF oil holding capacity of up to 5.59 g/g and 2.05 g/g respectively, IDF and SDF water holding capacity of up to 8.80 g/g and 3.47 g/g respectively. The swelling capacity,cation exchange capacity, adsorptive cholesterol adsorption capacity and the nitrite ioncontent from high to low order SDF, TDF, IDF. SDF and IDF swelling power of 4.56 mL/g and 3.40 mL/g respectively, SDF and IDF cation exchange capacity of 0.77 mmol/g and 0.27 mmol/g respectively, SDF and IDF cholesterol adsorption capacity of 20.71 mg/g and 15.69 mg/g respectively, the adsorption of SDF and IDF nitrite amounted to 7.14 mg/g and 3.80 mg/g respectively. The antioxidant capacity of the order from high to low order of SDF, TDF, IDF. SDF hydroxyl radical （-OH ） scavenging capacity, DPPH radical scavenging capacity, H202 radical scavenging ahility, the metal chelating capacity, reducing power, total antioxidant capacity were 93.33%, 14.23%, 68.34%, 90.11%, 91.56%, 93.33%, and through the analysis of the quality index found that enzyme alkaline extraction of dietary fiber from old stalk of asparagus with excellent characteristics of dietary fiber in producing high quality products, but also suitable as a health sna

关 键 词：酶碱法 芦笋 膳食纤维 品质分析 抗氧化性 

分 类 号：R151[医药卫生—营养与食品卫生学]