Academic Search Premier http://purl.lib.purdue.edu/db/db142
General information from journals, magazines, and newspapers in all subject areas. This is a good place to start a search on nearly any topic, but not a good place to do a comprehensive search.
FSTA (Food Sciences & Technology Abstracts) http://purl.lib.purdue.edu/db/fsta
FSTA contains abstracts of the worldwide literature of food science, food technology, and food-related human nutrition. Topics covered include every aspect of the food chain such as biotechnology, food safety, food science, functional and novel foods, additives, nutrition and packaging.
PubMed http://www.ncbi.nlm.nih.gov/sites/entrez?otool=inpurduelib
PubMed provides access to citations from biomedical literature, including many topics relevant to food science (e.g., microbiology, food packaging, food preservation.)