Natural preservatives on the rise
(PHYSorg.com Chemistry)

Beginning this year, Oscar Mayer stopped adding artificial preservatives to their hot dogs. Taking their place is celery juice, a natural source of the preservative sodium nitrite. This week Chemical & Engineering News (C&EN), the newsmagazine of the American Chemical Society, examines the trend toward `clean labels` and natural preservatives, and the efforts to incorporate them without sacrificing the quality or shelf-life consumers have come to expect.