Reduced Sodium Snack Pellets Expansion Control
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Solution Overview
Problem
Existing snack food pellets have high added sodium content, which is detrimental to health, but reducing or eliminating sodium leads to poor expansion and high bulk density in the final snack food product, resulting in undesirable texture.
Innovation Solution
The method involves manufacturing a dough with less than 300 mg of added sodium per 100 g, extruding it, forming pellets, and controlling manufacturing conditions such as temperature, speed, moisture content, and steam injection to increase the expansion ratio and decrease bulk density.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If added sodium is reduced to less than 300 mg per 100 g of pellets, then healthiness is improved, but expansion ratio deteriorates and bulk density increases
Solution Approach 1:
The patent applies parameter changes by modifying extrusion process parameters (temperature, speed, moisture content) to compensate for reduced sodium content. By increasing extrusion temperature and adjusting moisture levels, the starch matrix achieves adequate expansion without requiring high sodium levels, thus resolving the contradiction between healthiness and expansion quality.
Solution Approach 2:
The patent creates a copy of the starch matrix structure that mimics the expansion behavior of high-sodium pellets. Through controlled extrusion conditions, the low-sodium pellet is engineered to replicate the porous structure and expansion characteristics of traditional high-sodium products, achieving similar texture and volume without the harmful sodium content.
2Object-affected harmful factors
If added sodium is removed completely, then healthiness is improved, but pellet expansion deteriorates leading to high bulk density and unexpanded glassy phases
Solution Approach 1:
The patent introduces water as an intermediary substance that mediates the expansion process in the absence of sodium. By controlling moisture content and using steam injection during extrusion, water acts as the expanding agent that creates the necessary porosity and prevents glassy phase formation, enabling complete sodium removal while maintaining pellet quality.
Solution Approach 2:
The patent utilizes phase transitions of water (liquid to vapor) during extrusion and cooking to drive pellet expansion. The controlled introduction of steam and subsequent phase change provides the pressure and volume increase needed for proper expansion, replacing sodium's role in the expansion mechanism and preventing unexpanded glassy phases.
3Stability of the object's composition
If functional starches like N-Hance 59 are added to compensate for sodium removal, then expansion is maintained, but manufacturing cost increases significantly
Solution Approach 1:
The patent replaces expensive functional starches with common, inexpensive ingredients already present in standard dough formulations. By utilizing basic starches, sugars, and water in optimized proportions, the patent achieves adequate expansion without requiring costly additives like N-Hance 59, thus maintaining manufacturing cost-effectiveness while eliminating sodium.
Solution Approach 2:
The patent enables the standard starch matrix to self-expand adequately through optimized extrusion parameters. Rather than adding specialized functional starches, the system uses its own inherent properties (starch gelatinization, sugar caramelization) enhanced by controlled temperature and moisture to achieve expansion, making the process self-sufficient and cost-neutral.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach allows for the production of reduced or zero added sodium snack food pellets that expand similarly to standard added sodium pellets, achieving a desirable texture and bulk density comparable to traditional products.
Implementation Method 1
increasing the temperature of the extruder relative to the temperature of an extruder used to extrude a dough comprising at least about 950 mg of added sodium per 100 g of dough
Implementation Method 2
extruding the dough through an extruder to produce an extrudate
Implementation Method 3
preconditioning the dough by steam injection before extrusion and increasing the amount of injected steam relative to the amount of injected steam used to precondition a dough comprising at least about 950 mg of added sodium per 100 g of dough
Implementation Method 4
cooking the pellets, wherein the manufacturing conditions are controlled to increase the expansion ratio of the pellet
Implementation Method 5
the pellets expand to produce an expanded snack food
Data Source
AI summary
Methods for manufacturing reduced or zero added sodium expandable snack food pellets by controlling the manufacturing conditions to control the expansion ratio of the pellets. Methods for manufacturing reduced or zero added sodium expanded snack food by controlling the manufacturing conditions to control the bulk density of the resulting expanded snack food. Reduced or zero added sodium expandable snack food pellets having specific expansion ratio and/or glass transition temperature, and reduced or zero added sodium expanded snack food products prepared from the pellets. Reduced or zero added sodium expanded snack food having specific bulk density.