Digital Re-print - November | December 2011
Food safety in the grain milling industry
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FEATURE
FOOD SAFETY
in the grain milling industry
by Urs Dübendorfer, Bühler AG, Switzerland
T
he aim of the millers is to Food safety issues have not be con- low in microbiological charge. Depending on the
provide a healthy and pure sidered as a cost driver or an option, but sourcing of the wheat, it is not always possible
staple food to the consumers. as a must for the food producing industry to procure a pure raw material. So Bühler is
The focus lies on the purchasing and throughout the entire value chain from the providing solutions to treat the finished product
treatment of the raw materials, its farm to the fork. In regard of the “Don’t do thermically. The well-known process FHT (Flour
processing, the training of the people harm”–approach in machine design, several Heat Treatment) is used for example to lower
and precautions in order to prevent a guidelines are elaborated in order to set up the charge of pathogen germs within the flour.
possible recontamination. checklists for equipment design. It is an For other usages of flour, to assure baking
established procedure in Bühler that all the functionality is required a low contamination in
Food becomes hazardous by contami- equipment and technology developments microorganisms and an entirely functional gluten.
nation. Contamination is the unintended are counterchecked to these standards. Bühler strives for this reason to mature a new
presence of harmful substances or microor- In the Buhler R&D process any newly technology of flour pasteurisation.
ganisms in food. Food can become contami- designed equipment and processes are With the upcoming trend of enriching the
nated from chemical, physical or biological cross-checked carefully with regard to: diet with fibres and other precious constitu-
sources. In an increasingly complex world, • Clean-ability in- and outside of the ents out of the wheat kernel, there are new
there is a higher risk of food borne diseases. equipment chances for cereal processors to enlarge the
Providing safe flour requires the effort of • Avoiding of any dead pockets or hidden portfolio of noble products. The demand
many partners and various skills within the angles in the process for germ and hygienised bran is increasing
company. With Bühler as a partner, in under- • Undertake all necessary actions to make worldwide, representing a possible niche
standing the demands and verifying the most a re-contamination within the process market for millers.
adequate solutions and technologies, the impossible So in conclusion, one can resume to the GFM04 Mog65th#3 Spread 132x90:GFMT 132x90 01/02/2011 13:35 Page 1
changing markets are not a thread but a huge • All eventual coatings need to be following basic rules:
opportunity to fulfil consumer expectations approved for food safety • It starts with the purchase of the cereals
and add value to flour or other products out It is the common understanding through- only from crop assured sources. MAKE SURE IT’S A…
of the mill. out the industry that the efforts for food safety • Check every delivery of wheat for any
Traditionally, the miller is used and expe- are not limited to machines and
rienced to operate processes, which are equipment. Modern mill build- For all your SPREADING and
ings for example do not other vibratory equipment needs – SIZERS
have windows or at least whether you’re specifying,
a quite reduced, screened purchasing or installing –
surface; this is mainly make sure it’s a MOGENSEN…
explained by banning the
possibility of emissions
ATEX LEvEL swiTch
FEEDERS
such as dust or insects. The capacitive proximity switches in the DOL 40R series are now
Another building related available with ATEX approval for use in areas with constant danger
issue is the clean-ability of of dust explosion.
the production environ-
ment. It should be consid- SEPARATORS
ered as a standard execu- SPREADERS
tion to cover floors with
designed to detect and remove foreign a smooth epoxy layer, likewise
matters out of the raw material. Several corners should be rounded and windowsills food safety hazards and reject wheat, CONVEYORS
techniques based on the physical differences must not be horizontal. which does not fit for purpose. The first name in
in between the particles have been matured Having the engineering related topics • Apply HACCP (Hazard Analysis, Critical processing & recycling
during the passed decades and centuries. A done nicely, the control of the climate is Control Points) systems through the Mogensen
contemporary topic in the cereal processing another very important topic. At the same milling process. A Division of
industry is natural toxins metabolised by time it is possible to lift the pressure within • Define different risk zones and assign Grantham Engineering Ltd
fungi. These so called mycotoxins are strictly the buildings above the atmospheric pres- the people who may access. Harlaxton Road, Grantham, SCREENS • Designed for detection on grain, feed and granules
monitored and their removal is a huge chal- sure, this results in higher efficiency of the • Apply proven and certified equipment Lincolnshire NG31 7SF, UK • Zone 20 approved - for use inside bins and hoppers
Tel +44 (0)1476 566301 • With integrated amplifier and change-over relay
lenge for the miller. Since millers are process- entire aspiration system and hinders flying and technologies only.
Fax +44 (0)1476 590145 • Reliable and resistant
ing a biological raw material, there is always insects to get into the mill. • Demarcate clearly “High Sanitation”
E-mail sales@mogensen.co.uk • Easy to mount
the presence of natural contaminants such as Since consumer habits are changing quickly, zones like bagging and prevent access.
microorganisms. By knowing about the risk there is a noticeable impact on flour produc- www.mogensen.co.uk COMPACTORS
and by conducting the processes carefully, tion. Flours that are downstream processed to Conclusion
the miller is able to minimize the risk of hav- convenient foodstuff like frozen dough or semi- Points to take influence for food safety in dol-sensors Tel. +45 72 17 55 55 www.dol-sensors.com
ing pathogen germs in the finished products. finished baking goods are supposed to be very grain milling
26 | november - december 2011 Grain &feed millinG technoloGy Grain &feed millinG technoloGy november - december 2011 | 27
Perfection in grain milling – a highly demanding task. Antares sets new standards
for round-the-clock milling. The self-contained roll pack and reliable product
feed ensure precise and consistent flour. Maximum hygiene is guaranteed thanks
to clever insulation, integrated product inlet aspiration and stainless steel lining.
Experience a new level of ease of use and quality from ergonomic controls
and operating reliability to the highly impressive design. Antares – The New Art
of Milling.
Bühler AG, Grain Milling, CH-9240 Uzwil, Switzerland, T +41 71 955 11 11, F +41 71 955 66 11
milling@buhlergroup.com, www.buhlergroup.com
Antares MDDR-600.
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settings, consistent flour.
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highly consistent grinding.
Ultimate design. The perfect combina-
tion of ergonomics and performance.
Innovations for a better world.
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Mycotoxins
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