The secondary research process involved comprehensive analysis of regulatory databases, peer-reviewed scientific journals, food technology publications, and authoritative agricultural and health organizations. Key sources included the US Food & Drug Administration (FDA), European Food Safety Authority (EFSA), Food and Agriculture Organization (FAO), National Institutes of Health (NIH), National Center for Biotechnology Information (NCBI/PubMed), United States Department of Agriculture (USDA), European Commission Directorate-General for Health and Food Safety, World Health Organization (WHO) Global Health Observatory, Algae Biomass Organization (ABO), International Society for Applied Phycology (ISAP), National Oceanic and Atmospheric Administration (NOAA), European Algae Biomass Association (EABA), China National Center for Food Safety Risk Assessment (CFSA), and national agricultural ministry reports from key markets.
For spirulina, chlorella, dunaliella salina, haematococcus pluvialis, and other algal protein technologies, production statistics, regulatory approval data, clinical nutrition research, culture technology trends, and market landscape analysis were gathered from these sources.