How can you find out if a journal is peer-reviewed? Use Ulrich's Periodicals Directory, which you can find in the A-Z database list from the library's home page. Use the Quick Search box in the upper right-hand corner to search by keyword, subject, or title; or you can browse by various subjects or indexes.
When your search results screen appears, you'll see a legend in the upper right-hand corner:

For example, if you do an exact-title search for Journal of Food Science, you will get the following results:

Note that Journal of Food Science IS a peer-reviewed journal, because it has this image of a referee's shirt to the left of the title:
