摘要
通过低场核磁技术、扫描电子技术及激光粒度分析等技术对冻融和超高压处理的豆渣进行水分分布变化、微观结构以及粒径进行分析。试验结果表明:冻融和超高压处理可以改变豆渣中不同水分的束缚程度,豆渣中的水分可以通过不同的处理方式发生迁移;豆渣中的结合水、不易流动水和自由水的束缚程度都发生显著变化(P<0.05),分别与豆渣中亲水基团、微观机构和豆渣的粒径有关。冻融和超高压处理的豆渣挤压脱水后,含水量显著降低(P<0.05),由原来的(80.5±0.1)%分别下降为(71.3±0.2)%和(76.5±0.1)%;挤压脱水后豆渣自由水的含量与含水量正相关,结合水、不易流动水含量与含水量负相关。冻融处理的豆渣网络结构收缩,豆渣对水的束缚能力提高。豆渣粒径分析显示冻融后的豆渣对自由水的束缚程度最弱。
Through low-field nuclear magnetic resonance and scanning electron microscope and laser particle size analysis technology, water distribution, microstructure and grain size distribution changes of bean dregs by freezing and thawing and ultra-high pressure processing were analyzed. The results showed that the freezing and thawing and ultra- high pressure processing could change the constraints of different water level in the bean dregs, and the moisture in the bean dregs migrated by different handling ways. The bondage degree of the combined water, not easy flowed water and free water in bean dregs were changed significantly （P〈0.05）, that were concerned with bean dregs of hydrophilic group, micro organization and bean dregs in size, respectively. After freezing and thawing and ultra-high pressure processing, bean dregs were squeeze dewatered, water content in bean dregs decreased significantly（P〈0.05）, decreased from（80.5 ±0.1）% to （71.3±0.2）% and （76.5±0.1）%, respectively. After squeeze d^watering, the free water content and water content were positive correlation, bound water and not easy flowed water were negative correlated with water content in the bean dregs. Freezing and thawing processing tightened bean dregs network structure, enhanced the water bondage of bean dregs in the same time. Bean dregs particle size analysis showed the free water bondage of bean dregs after freezing and thawing was the weakest.
作者
代伟长
胡耀辉
于寒松
王玉华
朴春红
刘俊梅
田秀娟
刘景圣
Dai Weichang;Hu Yaohui;Yu Hansong;Tian Xiujuan;Wang Yuhua;Piao Chunhong;Liu Junmei;Liu Jingsheng(College of Food Science and Engineering,Jilin Agricultural University,Changchun 130118;Soybean Research ＆ Development Center,CARS： Division of Soybean Processing,Changchun 130118;Jilin Province Key Laboratory of Grain and Oil Processing,Jilin Business and Technology College,Changchun 130507;National Engineering Laboratory of the Wheat-Corn Deep Processing,Changchun 130118)
出处
《中国食品学报》
EI
CAS
CSCD
北大核心
2018年第8期260-266,共7页
Journal of Chinese Institute Of Food Science and Technology
关键词
豆渣
低场核磁
微观结构
粒径
水分分布
bean dregs
low-field nuclear magnetic resonance
microstrueture
grain size
water distribution
