PerkinElmer
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doughLAB

CGI approved analysis of flour water absorption, dough development and mixing tolerance. The doughLAB determines water absorption of flour, dough development time and other dough mixing parameters.

Part Number PERDL
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Overview

The instrument uses the traditional 20-minute test and the new 10-minute high-speed mixing test (AACC 54-70.01). The 10-minute test increases lab throughput and efficiency. It improves analysis results by making it easier to interpret samples with long development times, indistinct development peaks and multiple peaks. In addition, the high-speed method more closely resembles today’s bread making processes. Results are presented in FU or SI units.

Features and Benefits

  • Approved high speed rapid mixing method
  • Fast 10-minute high-energy mixing AACC Method 54-70.01.
  • Versatile - Choice of traditional 20-minute test, new 10-minute high-speed mixing test and user defined methods. Bake labs can create specific tests to study flour performance using variable temperature and high speed/energy mixing. Programmable temperature to study dough performance during heating, cooling and gelling/cooking. Variable speed mixing to study stiff and crumbly dough, novel formulations, evaluate dough response to changing stress and mimic commercial mixing.
  • Automated - Integrated bowl temperature control system. Integrated, automatic water dispensing with “drip” function for repeatable, operator independent measurement of water absorption.
  • User Friendly - Windows software with flour/dough quality methods included in the software library, plus user can create their own methods. Real time graphs, data analysis and diagnostics. Test configuration, data and analysis programs stored in software and easily transferable. Easy to use "routine user" mode.
  • Traceable - Calibrated in standard and traceable toque units (Nm). Complies with ISO9000 and Quality System requirements.
  • Secure results - Software password protection and single-page report with traceable data comply with Electronic Registration/Electronic Signature requirements.
  • Easy Clean Up - Bowl disassembles quickly for easy cleaning to increase sample throughput.
  • Virtual Blending - Millers can quickly calculate flour blends to meet target water absorption specifications using the software. Perform complex "what if" analyses without having to run lots of tests. These blend models can be used to manage crop changeover issues and design flour blends to maintain specifications for specific purposes and products while reducing costs.

Applications

  • Wheat flour doughs are nonlinear viscoelastic materials, and as such there is a complicated relationship between the strains imparted during mixing (stretching, shearing, compression and relaxation) and dough resistance. A number of factors related to processing conditions and flour type will also have a large effect on how the dough behaves. Variations in water and protein content, changes in the fibrillar structure of the protein, starch, starch damage, pentosans, gluten strength and the actions of enzymes on the dough components all affect dough behavior. Due to the complex nature of dough behavior an empirical instrument test is desirable.
  • The two key pieces of information required by millers and bakers are the absorption (amount of water required for a dough to reach a definite consistency) and the mixing profile of the dough (development time, stability and softening) which are indicative of the suitability of the flour for different applications. Other parameters may also be measured.

doughLAB information will be useful to:

  • Milling, baking (bread, cake, pastry, biscuit), pasta and Asian products (eg steam bread, noodles and flat bread) laboratories who need to test wheat flour quality and processing characteristics.
  • Specific applications include the study of gluten and carbohydrate functionality, enzyme activities in flour, functions and effects of dough ingredients (dried dairy ingredients, organic acids, salt, emulsifiers, antioxidants, yeast , sugar, improvers and enzymes), properties of composite flours, effects of special flour treatments and emulation of commercial processes.
  • There are also applications for the testing of cereal grains other than wheat such as rye, triticale and durum. doughLAB can be used to study the mixing characteristics of vital gluten which is added when the flour has insufficient quantity or quality of gluten and is often used in specialty breads (eg those made with rice flour), bread manufactured at high altitude and for many brown and grain breads.

Specifications

Power Requirements AC 220/240 V ± 10% 50/60 Hz, 1200 VA.
Computer Requirements PC with Windows Vista or later operating system.
Dimensions (HxWxD) 370 x 490 x 970 mm.
Net Weight 91 kg incl. bowl.
Data Interface USB B type.
Temperature Range 10–80°C (variable).
Water supply 1 L/min at maximum, 100 kPa (at instrument), <25 °C. (Chilled water supply required for operation below room temperature.)
Heating Rate 2.5°C/minute max.
Cooling Rate 5°C/minute max. (depending on cooling system).
Temperature Monitoring Sample, bowl and water.
Speed Range 0, 10-200 rpm.
Motor Torque Up to 25 Nm.

Resources, Events & More
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Application Note

doughLAB Application and Method

doughLAB uses standard or custom test configuration to determine water absorption, and dough mixing profile of wheat, durum, rye, and composite flours for milling. This method indicates when dough will reach its optimum viscous and elastic properties for bread making.

PDF 378 KB

Brochure

Flour & Dough Testing with doughLAB

doughLAB determines flour water absorption, dough development time, stability and other dough mixing parameters in 20 minutes under AACCI 54-70.01 approved high speed mixing 10 minute test.

PDF 146 KB