World Grain - August 2014 - (Page 86)

FEATURE: DEBUGGING YOUR FACILITY Species spotted While the kinds of pests that attack stored foods have not differed over the years, some are becoming more prevalent. "These pests have been around a long time and haven't changed much," said Mel Whitson, regional manager and degreed entomologist, Central Life Sciences; however, some invasive ant species are now showing up in California and Florida. "While these are aggressive species, they are usually considered secondary pests," he said. Far more destructive are the insects that break through the tough hulls of cereal grains and expose the interior to moisture, mold and fungus. In some parts of the world, grain and rice weevils damage up to 40% of the crop. The insects found in bakeries are usually beetles - the red and confused flour beetles - and the Indianmeal moth, which is very common in grain stores and retail environments, noted Raj Hulasare, PhD, PEng (Canada), senior scientist and product manager, Temp Air, Inc. "In snack food facilities, the species varies according to the type of food stored and processed, with flour, cigarette and warehouse beetles the most common." Stored-product pests are not like rodents and flies because they are not heavily affected by the weather, said Zia Siddiqi, PhD, director of quality systems, Orkin, a subsidiary of Rollins, Inc. "Stored-product pests also don't usually pressure facilities from the outside. Instead, they often hitch a ride into a facility on shipments from suppliers," he said. nating sources of moisture and keeping storage areas cool and well-ventilated will reduce chances of the product becoming vulnerable to pests. Siddiqi recommended keeping storage areas below 65 degrees F because most stored-product pests can't thrive in cooler temperatures. But efforts really count when managing received supplies. Signs of infestation on incoming supplies include webbing, damaged ingre- dients or packaging, visible insect larvae or insects themselves. "If you see signs of stored-product pests, refuse to accept the shipment and notify your supplier immediately," Siddiqi said. "Request a supplier inspection, including the mode of transportation." And don't forget to report such episodes to the pest management service, he added. He recommended storage techniques that keep foods away from walls and at least 6 inches off the floor. When receiving pallet loads, it can be possible for a bag in the interior of the stack to rupture. "This exposes the product to pests," Whitson said. "It also drops flour or crumbs at the foot of the storage rack in areas that may not be readily accessible for cleaning." Whitson offered another tip. "You should be selecting the right-sized package so that you go through it quickly," he said. "The bigger the package, the easier it is to inspect and maintain in pest-free condition." Nothing raises the alarm faster than a contaminated foodstuff. "I've seen situations where the pest appears in the packaged food," Whitson related. A fly that a shopper reports finding inside a bread bag has to get through four air curtains and more than a dozen light traps to reach the packaging area. "You have to go back and look at every possibility that might have allowed that pest in," he advised. "You have to look at the whole program." Laurie Gorton is executive editor of Baking & Snack, sister publication of World Grain. She can be reached at We want to hear from you - Send comments and inquiries to For reprints of WG articles, e-mail For more information, see Page 106. 86 August 2014 / World Grain /

Table of Contents for the Digital Edition of World Grain - August 2014

World Grain - August 2014
Table of Contents
From the Editor-in-chief - Fundamentals drive wheat prices
Calendar of Events
Latin American milling conferences
News Review - Interflour to build flour mill in Philippine free-trade zone
San Miguel to double flour milling capacity
ADM Milling completes expansion in Indiana
Bartlett building grain facility in Kansas
Cargill to build grain facility in Arkansas
Grupo Bimbo acquires Ecuadorean baker
Didion Milling names vice-president, business development
GrainCorp buys stake in Egyptian flour miller
Egypt purchases 5.1 million tonnes of wheat in 2013-14
United Grain plans bigger expansion at port
E.U. feed groups want decision on GMs
Toepfer renamed ADM Germany
E.U., EIB to work together on agriculture
Uzbekistan harvests record 8 million tonnes of grain
Ungashick joins World Grain sales team
E.U. sets import duty for first time in nearly four years
CHS earnings up 51% in third quarter
CHS makes management changes
Ardent Mills selects office location
Grain Market Review - Coarse grains
Country Focus - South Africa
Feature - Dawn of a New Era
Ardent Mills partners, executives, bring deep roots in flour milling
Regional Review - A Vital Grain Producer
Regional Review - Overflowing with Oilseeds
Regional Review - Export Challenges
Feature - Using Corn as a 'Lifeline'
LifeLine products
Technical Profile - Demanding the best
Feature - A Growing Issue
Feed Operations - Pellet Mills
Feature - Debugging your facility
Species spotted
Guest Commentary - Unforgettable: How flour saved Berlin
Feature - Olam's rice nucleus program
Rice Quarterly - UN sets acceptable levels of arsenic in rice
New rice mill planned for Arkansas
Italy wants ‘fairer’ rice deal
Thailand province developing jasmine rice
Thailand’s rice price shoots up on drought
Supplier News
Product Showcase
World Grain Archive
Ad Index/Fax Back Program

World Grain - August 2014