Roasted Nut Coating Method for Heat-Sensitive Ingredient Protection
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Solution Overview
Problem
Traditional methods for preparing roasted snack products, such as nuts and seeds, are unsuitable for heat-sensitive ingredients like herbs and spices, leading to undesirable taste and appearance due to burning during high-temperature roasting, and result in limited taste and visual diversity, as well as short shelf life.
Innovation Solution
A method where the roasting step is performed before coating with a composition of seasoning and visual agents, allowing the roasted edible core to be coated with a liquid composition containing adhesive and seasoning agents at a lower temperature, followed by cooling and drying, to preserve the integrity of heat-sensitive ingredients and enhance texture and appearance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If traditional high-temperature roasting is used to achieve desired brownish appearance and typical tastiness, then the roasted appearance and typical roast taste are improved, but heat-sensitive ingredients like herbs and spices burn, giving undesirable burnt taste and blackened appearance
Solution Approach 1:
The coating composition is applied to the nuts before roasting, creating a protective layer that shields heat-sensitive ingredients from direct high-temperature exposure. This preliminary coating action prevents burning while allowing the nuts to achieve desired roasting characteristics.
Solution Approach 2:
The coating composition acts as an intermediary substance between the heat source and the heat-sensitive ingredients. This intermediate layer modulates heat transfer, protecting delicate herbs and spices from direct thermal exposure while still allowing sufficient heat penetration for proper roasting.
2Reliability
If traditional coating methods are used before roasting, then the coating provides protective effect, but the roasting process still damages heat-sensitive ingredients and limits taste diversity
Solution Approach 1:
The invention modifies the composition parameters of the coating to include specific adhesives and seasonings that can withstand roasting temperatures while protecting heat-sensitive ingredients. The coating formulation is specifically adjusted to provide both protective and flavor-enhancing properties without limiting taste diversity.
3Shape
If high-temperature roasting is applied to achieve crispy texture and appetizing appearance, then the texture and visual appeal are improved, but the shelf life is reduced due to moisture susceptibility
Solution Approach 1:
The coating composition is formulated with specific properties that provide localized protection to the nut surface. The coating creates a barrier layer with different moisture transmission characteristics, protecting the interior from moisture ingress while maintaining the desired crispy exterior texture and appearance.
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 method produces snack products with enhanced taste diversity, improved texture, increased visual attractiveness, and extended shelf life without moisture susceptibility, ensuring the quality of heat-sensitive ingredients is maintained.
Implementation Method 1
coating composition comprising one or more adhesive agents and one or more seasoning agents
Implementation Method 2
removing excess liquid from the coating composition
Data Source
AI summary
This invention relates to a method for preparing, preferably flavoured, roasted snack products, comprising the steps of roasting an edible core at a first temperature, applying at least one layer of a coating composition comprising one or more seasoning agents and/or visual agents, maintaining the roasted edible core at a second temperature, which is lower than the first temperature, and the then letting the roasted edible core products cool and dry at room temperature. The method of the invention produced snack food products which have enhanced taste, greater appearance, improved texture, increased resistance to moisture and increased shelf life compared to snack food products obtainable by traditional methods.