Milling Journal - Q3 2008 - (Page 34) decrease in moisture content is not instantaneous but is influenced by time and temperature (energy in the system). Figure 2 (above) shows that the sorption isotherm for wheat has a similar configuration for flour, as wheat is 83% of the wheat kernel endosperm. We temper wheat to 15-16% moisture to facilitate the separation of bran germ and endosperm needed to produce flour. The flour you produce and the baker receives is about 14% moisture, because the moisture is driven off in the milling process due to the grinding energy and use of air for product movement. Millers work hard to control the mill environment to about 60% to 65% relative humidity to prevent the bran from drying out during processing, increasing the ash of the flour, darkening its color, and producing a low moisture in consistent product. Millers sometimes adjust the amount of water added during tempering to respond to changing weather conditions. Millers’ challenges are similar to the baker who is challenged to control the bakery fermentation process. Equilibrium Moisture Content Consider the Aw (water activity) to be an expression of the air’s relative humidity (measure of water actually held by air at a given temperature expressed as a percent of its water-holding capability). Draw a vertical line up from a particular relative 34 Third Quarter 2008 Response No. 341 MILLING JOURNAL http://www.cordanopackaging.com http://www.cordanopackaging.com
Table of Contents Feed for the Digital Edition of Milling Journal - Q3 2008 Milling Journal - Q3 2008 Contents Milling News Far West Rice Generates Own Power New IAOM-KSU Resident Courses Theodore "Ted" Korolchuk: Miller of the Year IAOM News New IGP Wheat/Flour Web Site Wheat Tempering and Surfactants New ADM Milling Center 2008-09 IAOM Officers Controlling Condensation International IAOM Meetings Pest Management/Subramanyam 2008 Wheat Crop Quality Report Product Quality/Gwirtz Buhler 2009 Resident Courses Northern U.S. Wheat/Backman Horizon Milling to Close ON Mill 2nd Quarter Milling Production Chilled Rolls Belting Product Reviews Milling News Enrichments Phil Weisenberger Obituary Material Handling Pneumatic Systems Mixers Roller Mills Roll Corrugation Product Reviews Storage Transportation Equipment Product/Service Directory Ad Index Milling Journal - Q3 2008 Milling Journal - Q3 2008 - Milling Journal - Q3 2008 (Page Cover1) Milling Journal - Q3 2008 - Milling Journal - Q3 2008 (Page Cover2) Milling Journal - Q3 2008 - Contents (Page 3) Milling Journal - Q3 2008 - Milling News (Page 4) Milling Journal - Q3 2008 - Milling News (Page 5) Milling Journal - Q3 2008 - Far West Rice Generates Own Power (Page 6) Milling Journal - Q3 2008 - Far West Rice Generates Own Power (Page 7) Milling Journal - Q3 2008 - Far West Rice Generates Own Power (Page 8) Milling Journal - Q3 2008 - Far West Rice Generates Own Power (Page 9) Milling Journal - Q3 2008 - New IAOM-KSU Resident Courses (Page 10) Milling Journal - Q3 2008 - New IAOM-KSU Resident Courses (Page 11) Milling Journal - Q3 2008 - Theodore "Ted" Korolchuk: Miller of the Year (Page 12) Milling Journal - Q3 2008 - Theodore "Ted" Korolchuk: Miller of the Year (Page 13) Milling Journal - Q3 2008 - IAOM News (Page 14) Milling Journal - Q3 2008 - IAOM News (Page 15) Milling Journal - Q3 2008 - New IGP Wheat/Flour Web Site (Page 16) Milling Journal - Q3 2008 - New IGP Wheat/Flour Web Site (Page 17) Milling Journal - Q3 2008 - Wheat Tempering and Surfactants (Page 18) Milling Journal - Q3 2008 - Wheat Tempering and Surfactants (Page 19) Milling Journal - Q3 2008 - New ADM Milling Center (Page 20) Milling Journal - Q3 2008 - New ADM Milling Center (Page 21) Milling Journal - Q3 2008 - 2008-09 IAOM Officers (Page 22) Milling Journal - Q3 2008 - 2008-09 IAOM Officers (Page 23) Milling Journal - Q3 2008 - Controlling Condensation (Page 24) Milling Journal - Q3 2008 - Controlling Condensation (Page 25) Milling Journal - Q3 2008 - International IAOM Meetings (Page 26) Milling Journal - Q3 2008 - International IAOM Meetings (Page 27) Milling Journal - Q3 2008 - Pest Management/Subramanyam (Page 28) Milling Journal - Q3 2008 - Pest Management/Subramanyam (Page 29) Milling Journal - Q3 2008 - Pest Management/Subramanyam (Page 30) Milling Journal - Q3 2008 - 2008 Wheat Crop Quality Report (Page 31) Milling Journal - Q3 2008 - Product Quality/Gwirtz (Page 32) Milling Journal - Q3 2008 - Product Quality/Gwirtz (Page 33) Milling Journal - Q3 2008 - Product Quality/Gwirtz (Page 34) Milling Journal - Q3 2008 - Product Quality/Gwirtz (Page 35) Milling Journal - Q3 2008 - Buhler 2009 Resident Courses (Page 36) Milling Journal - Q3 2008 - Buhler 2009 Resident Courses (Page 37) Milling Journal - Q3 2008 - Northern U.S. Wheat/Backman (Page 38) Milling Journal - Q3 2008 - Northern U.S. Wheat/Backman (Page 39) Milling Journal - Q3 2008 - Northern U.S. Wheat/Backman (Page 40) Milling Journal - Q3 2008 - Horizon Milling to Close ON Mill (Page 41) Milling Journal - Q3 2008 - 2nd Quarter Milling Production (Page 42) Milling Journal - Q3 2008 - 2nd Quarter Milling Production (Page 43) Milling Journal - Q3 2008 - Product Reviews (Page 44) Milling Journal - Q3 2008 - Phil Weisenberger Obituary (Page 45) Milling Journal - Q3 2008 - Material Handling (Page 46) Milling Journal - Q3 2008 - Material Handling (Page 47) Milling Journal - Q3 2008 - Pneumatic Systems (Page 48) Milling Journal - Q3 2008 - Mixers (Page 49) Milling Journal - Q3 2008 - Roller Mills (Page 50) Milling Journal - Q3 2008 - Roll Corrugation (Page 51) Milling Journal - Q3 2008 - Storage (Page 52) Milling Journal - Q3 2008 - Storage (Page 53) Milling Journal - Q3 2008 - Transportation Equipment (Page 54) Milling Journal - Q3 2008 - Transportation Equipment (Page 55) Milling Journal - Q3 2008 - Transportation Equipment (Page 56) Milling Journal - Q3 2008 - Ad Index (Page 74) Milling Journal - Q3 2008 - Ad Index (Page Cover3) Milling Journal - Q3 2008 - Ad Index (Page Cover4)
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