
Research Leads to Better, Insect-Resistant PackagingBy Linda McGraw March
18, 1998Anyone who has opened a box of crackers, cereal or even dry pet food has
struggled with several layers of wrapping and tight seals. But that's a good
thing, according to Agricultural Research
Service entomologist Michael A. Mullen. Mullen should know. His lab work to test packaging materials against insects
has led to insect-resistant, pesticide-free containers for dry pet foods,
raisins, baby cereals, pancake mixes and breakfast cereals for domestic
consumption and export. Since 1989, manufacturers have relied on Mullen's findings to improve
packaging. One company has reported a 75 percent reduction in customer
complaints about insect- related problems. Mullen's research comes at an
opportune time for the food industry, which faces increasing restrictions on
pesticide use. Mullen, based at ARS' Grain Marketing
and Production Research Center in Manhattan, Kan., developed an odor
neutralizer that can be incorporated into packaging and keeps the smell of the
contents from attracting insects. He also discovered that closures on bag
bottoms are prone to insect entry and need reinforcement as much as top
closures. Most insects enter food and feed packages through seams and closures. Like people who fall into two personality types--uptight A or laid-back
B--stored product insects are one of two types: invaders or penetrators. The
invaders are opportunists that get inside food containers by searching for
cracks, crevices, and holes. Penetrators simply chew holes in the packages. While there's no one thing that makes a package insect-proof, each additional
design improvement provides protection against invasion. An article in the March issue of Agricultural Research, ARS' monthly
magazine, tells more about the research to pest-proof food and feed packages. It's available on the World Wide Web at: http://www.ars.usda.gov/is/AR/archive/mar98/pest0398.htm Scientific contact: Michael A. Mullen,
Grain Marketing and Production Research
Center, 1515 College Ave., Manhattan, KS 66502; (785) 776-2782, fax (785)
537-5584, [email protected]. U.S. Department of Agriculture | |