This study maps the knowledge structure of walnut protein peptide research (2012-2025) through a bibliometric analysis of 229 publications retrieved from the Web of Science Core Collection, using tools such as Bibliometrix, VOSviewer, and CiteSpace. The results show that there is a clear publication output increase trend. China is the major contributor, South China University of Technology ranks as the top research institution, Journal of Agricultural and Food Chemistry is the core journal, and Min, WH and Wang, SG are the most cited authors. Furthermore, based on the most cited articles, the study finds research hotspots in the extraction of antioxidant and neuroprotective peptides, bioavailability and absorption mechanisms, and structure-activity relationships, which can be used to promote the research of walnut protein peptide and the development of walnut meal industry.
Gao et al. (Fri,) studied this question.