辐照对大豆膳食纤维粉品质变化影响  

Effects of Irradiation on Quality Change of Soybean Dietary Fiber Powder

作　　者：李华林 赵延军 崔龙[4] 陈云堂[4] 倪娜[5] 李庆鹏[1] Li Hualin;Zhao Yanjun;Cui Long;Chen Yuntang;Ni Na;Li Qingpeng(Key Laboratory of Agricultural Product Quality and Safety Collection,Storage and Transportation Management and Control of Ministry of Agriculture and Rural Affairs of the People s Republic of China,Institute of Food Science and Technology CAAS,Beijing100193;College of Food Science and Engineering of Tianjin University of Science and Technology,Tianjin300450;Shandong Vanform High Energy Physics Technology Co.,Ltd.,Jinan250101;Institute of Isotope Research,Henan Academy of Sciences,Zhengzhou450015;College of Life Sciences and Food Engineering,Tongliao028000)

机构地区：[1]农业农村部农产品质量安全收贮运管控重点实验室,中国农业科学院农产品加工研究所,北京100193 [2]天津科技大学食品科学与工程学院,天津300450 [3]山东蓝孚高能物理技术股份有限公司,济南250101 [4]河南省科学院同位素研究所有限责任公司,郑州450015 [5]内蒙古民族大学生命科学与食品学院,通辽028000

出　　处：《中国粮油学报》2023年第5期42-48,共7页Journal of the Chinese Cereals and Oils Association

基　　金：河南省科学院重大科研项目聚焦项目(210104005);国家自然科学基金项目(31660467)。

摘　　要：为探索辐照处理对大豆膳食纤维粉品质变化的影响,本研究采用0、2、4、6、8、10 kGy辐照处理大豆膳食纤维粉,通过扫描电镜分析、傅里叶红外光谱扫描表征不同辐照剂量对其微观结构和基本结构的影响;并对比辐照前后膳食纤维组成成分、持水力、结合水力、黏度、色泽的变化,以及辐照对微生物数量的影响。研究结果表明,与未经辐照处理的大豆膳食纤维粉相比,辐照后的大豆膳食纤维微观结构更为蓬松,理化性质明显改善。在4~8 kGy辐照剂量范围内,SDF含量增加了16.88%,IDF含量减少了13.74%,持水力最大为18.37 g/g,结合水力最大为32.84 g/g,黏度提高,色泽白度降低。经辐照的大豆膳食纤维粉,菌落总数减少,霉菌、酵母菌、大肠杆菌、沙门氏菌、志贺氏菌、金黄色葡萄球菌含量符合国家限量标准。To explore the effects of irradiation treatment on quality change of soybean dietary fiber powder,soybean dietary fiber powder was irradiated at 0,2,4,6,8 kGy and 10 kGy in this study.The effects of different irradiation doses on the microstructure and basic structure were characterized by scanning electron microscope analysis and Fourier infrared spectrum scanning.The changes of dietary fiber composition,water holding capacity,binding capacity,viscosity and color before and after irradiation were compared,as well as the influence of irradiation on the number of microorganisms.The results indicated that,compared with the soybean dietary fiber powder which has not been treated,the microstructure of the soybean dietary fiber powder after irradiation was irradiation,and the physicochemical properties were obviously improved.Within the irradiation dose range of 4~8 kGy,the content of SDF increased by 16.88%,the content of IDF decreased by 13.74%,the maximum water holding capacity was 18.37 g/g,and the maximum water binding capacity was 32.84 g/g.The viscosity increased and the whiteness of color decreased.The total number of colonies of irradiated soybean dietary filber powder decreased,and the contents of mold,yeast,Escherichia coli,Salmonella,Shigella and Staphylococcus aureus met the national limit standard.

关 键 词：大豆膳食纤维 辐照 微观结构 理化性质 

分 类 号：S529[农业科学—作物学]