Document Type


Publication Date


Journal / Book Title

International Journal of Food Science & Technology


Further investigations of almond degradation under typical industrial storage conditions from a quantitative perspective are warranted. This study modeled effects of packaging, temperature (TEMP), relative humidity (RH) and roasting on chemical attributes of almonds stored according to common industry practices throughout 16 months. Roasted samples were stored in high-barrier bags (HBB) or polypropylene bags (PPB) at multiple combinations of TEMP and RH. Raw samples were held in unlined cardboard cartons (UC) or PPB under the same conditions. Almonds were assessed bimonthly for oxidation products, free fatty acids, moisture content and water activity. Results indicated roasting almonds improved quality preservation. Models showed HBB (rather than PPB) to provide benefits to stability comparable to reductions in storage TEMP of ~15 to 30 °C. PPB (rather than UC) showed benefits to peroxide formation of similar magnitude. Our data shows HBB to be a superior packaging choice, and UC to associate with the greatest rates of degradation.


10.1111/ijfs.14127Final published version Open

Published Citation

Parrish, D. R., Pegg, R. B., Kerr, W. L., Swanson, R. B., Huang, G., & Kerrihard, A. L. (2019). Chemical changes in almonds throughout storage: modeling the effects of common industry practices. International Journal of Food Science & Technology, 54(6), 2190-2198.