R&D & Quality Parameters
3. Technical Specifications & Moisture Control Engineering
For industrial food developers, integrating croutons into high-speed filling lines requires consistent physical parameters. Chaucer Foods operates strict quality assurance controls to prevent particle shattering, dusting, and density variations during automated dispensing.
| Parameter / Quality Metric |
Standard Specification Range |
Quality Control Method / ISO Standard |
| Water Activity ($a_w$) |
0.15 – 0.25 max |
Chilled Mirror Dew Point (ISO 18787) |
| Moisture Content (%) |
1.8% – 3.0% max |
Vacuum Oven Drying ($105^\circ\text{C}$) |
| Bulk Density |
170 – 230 g/L (variant dependent) |
Gravimetric Tapped Density Test |
| Free Fat Content |
5.0% – 12.0% (Baked), < 2.0% (No Oil Added) |
Soxhlet Extraction Method |
| Mechanical Crush Strength |
15 – 35 N force threshold |
Texture Analyzer Compression Test |
| Fines / Dust Percentage |
< 1.5% below 2mm sieve mesh |
Rotap Mechanical Sieve Shaker |
| Microbiological Profile |
TPC < 5,000 cfu/g | Yeast/Mold < 100 cfu/g |
Negative Salmonella & Listeria in 25g |
| Packaging Barrier Integrity |
Nitrogen flushed bulk bag-in-box / Foil sachets |
Residual $O_2 < 1.0\%$ |
The Science of Crunch: Starch Gelatinization & Pore Geometry
During the baking phase, starch granules within the wheat dough undergo thermal gelatinization. Chaucer's specialized slow-stage convection drying evaporatively strips water without rupturing the interior gluten matrix. This preserves micro-porous internal walls, creating structural pillars within each cube. When floating on soup, the outer lipid coating delays water ingress, while the internal micropores absorb steam without dissolving the outer structural skeleton.