NAGATA Ryuji Assistant Professor

ThemeThe search for food materials that improve the intestinal environment, carbohydrate and lipid metabolism, and systemic health through the intestinal microbiota

My DreamMake any meal healthy
  • Laboratory of Nutritional Biochemistry


Research Department/Department of Life and Food Sciences/Division of Food Science/Section of Food Technology and Biotechnology
Faculty (Unit)Food Science Program
Field Food Nutrition, Nutritional Biochemistry
Keyword Intestinal microbiota, Intestinal fermentation, Prebiotics, Probiotics, Resistant starch, Dietary fiber, Oligosaccharide, Polyphenol, Resistant protein, Intestinal immunity, Glycometabolism, Lipid metabolism, Next-Generation Sequencing


The human large intestine is inhabited by as many as 100 trillion intestinal bacteria of 1,000 types. Each of these bacteria has a variety of functions, and the activation of beneficial bacteria may improve the intestinal environment and affect systemic health. In our laboratory, we are studying the effects of food intake on the intestinal environment and systemic health through the activation of intestinal microbiota. We are conducting evaluation through comprehensive microbial analysis and quantification of microbial fermentation metabolites.
Intestinal microbiota influence the intestinal environment by fermenting various nutrients. On the other hand, in order to supply nutrients to the intestinal microbiota in the colon through the food intake, it is preferable that the food is not easily digested and absorbed in the small intestine. Therefore, our laboratory mainly focuses on food components such as dietary fiber, resistant starch, resistant protein, and polyphenols, and we deal with food materials containing these components. The properties of these ingredients vary depending on the food material they contain, and they have different effects on intestinal microbiota. By clarifying the characteristics of the effects and mechanisms of action of each food material and ingredient, we will promote the search for beneficial food materials.

List of current research topics

Exploration of food materials and their combinations that are beneficial for intestinal microbiota, intestinal environment, and carbohydrate and lipid metabolism

Affiliated academic society Japan Society of Nutrition and Food Science, Japanese Association for Dietary Fiber Research, Japan Society for Bioscience, Biotechnology, and Agrochemistry
Academic degree Ph.D.(Agriculture)
Self introduction

I am from Tokachi, Hokkaido. After graduating from a high school in Obihiro City, I spent my university life at this university until the doctoral course. My hobbies are drinking, BBQ, watching baseball games, and reading.

Room addressGeneral Research Building Ⅲ
Room number413
Mail address rnagata atmark