以供能比评价主食产品中马铃薯原料添加程度的指标构建研究

通过初步构建马铃薯供能比评价指标，比较以马铃薯供能比评价不同马铃薯原料添加程度的适用性，分析发现，马铃薯供能比与马铃薯质量占比之间差异最大可超过35%，二者间回归系数为0.958 4~0.999 9。以马铃薯供能比作为评价指标可较好地反映不同马铃薯原料对马铃薯主食产品的能量贡献程度，而不受其原料形态的影响。建议在马铃薯主食产品的生产、加工和市场监管等马铃薯主食产业各环节中，引入马铃薯供能比评价指标，用以对马铃薯主食产品中马铃薯原料添加程度的评价参考。

Research Advances on Non-starch Polysaccharide in the Regulation of Intestinal Microflora in Pigs

As the component of cell wall,fiber is the most widely distributed and abundant renewable resource on the earth. As the most important component of fiber structure besides lignin,non-starch polysaccharide(NSP)plays an important role in the functional regulation of fiber. The mechanism of fiber regulation in intestinal microflora has become a hot topic in the field of microbiology. However,as a complex mixture,the results of studying fiber are not consistent. The difference in fiber source,NSP content,and the incomplete assessment system are the reasons for the diverse results. In this paper,the research of NSP on the regulation of intestinal microflora in pigs in recent years was reviewed,and also the significance and problems of NSP in assessing the balance between dietary fiber and intestinal microflora were discussed,aiming to further expound the dialogue mechanism between nutrients and intestinal microflora and to provide reference for promoting the intestinal health of animals and the rational utilization of fiber.