Legume Roasting Fat Binding Volatile Aromas
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Solution Overview
Problem
Conventional roasting processes for legumes result in unpleasant flavors due to the production of disturbing aromas, such as bitter substances, which affect the digestibility and taste of coffee-like drinks made from them.
Innovation Solution
A roasting process for legumes that involves adding at least one fat during heating, which binds volatile aromas, enhances fat-soluble flavors, and masks other aromas, resulting in a more digestible and tasty coffee-like drink.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional roasting processes are used for legumes, then the roasting process is simple and quick, but unpleasant flavors and bitter compounds are formed
Solution Approach 1:
Fat is introduced as an intermediary substance during the roasting process. The fat binds to volatile aromatic compounds and bitter substances formed during heating, preventing them from contributing unpleasant flavors to the final product. This mediator approach allows conventional roasting to continue while eliminating its harmful flavor effects.
Solution Approach 2:
The bitter compounds and volatile aromas that are naturally formed during roasting (harmful effects) are converted into beneficial effects by having them bind to fat. This transforms the harmful flavor compounds into fat-bound substances that do not contribute unpleasant tastes, while the fat itself enhances the overall flavor profile.
2Object-generated harmful factors
If fat is added during roasting to improve flavor, then palatability and aroma spectrum increase, but process complexity and cost increase
Solution Approach 1:
The fat is added to the legumes before or at the beginning of the roasting process, allowing it to be incorporated into the material beforehand. This preliminary action ensures uniform distribution of fat throughout the roasting process, simplifying the overall procedure compared to multiple sequential additions.
Solution Approach 2:
The invention modifies the compositional parameter of the roasting system by introducing fat at controlled quantities (0.1-10% by weight). This parameter change fundamentally alters the flavor development during roasting, enabling beneficial Maillard reactions and aroma formation while suppressing bitter compound perception.
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
The process produces a coffee-like drink with a broader spectrum of flavors, perceived as tastier and more full-bodied by test subjects, with reduced bitter notes and lower acrylamide values, while ensuring product safety through careful selection of heat-resistant, edible fats and controlled roasting conditions.
Implementation Method 1
The added fat could also bind volatile aromas that would be lost during conventional roasting methods, allowing them to remain in the beans.
Implementation Method 2
roasting the legumes produces flavor compounds
Implementation Method 3
The influence of saturated and unsaturated fatty acids on the Maillard reaction is well-established.
Data Source
AI summary
The present invention relates to a method for roasting pulses. In this method, the pulses are heated and at least one fat is added to them. Furthermore, the invention relates to pulses that can be obtained according to the described methods. The invention also relates to the production of a coffee-like beverage that contains at least a portion of an extract from the described pulses, as well as a beverage that contains at least a portion of an extract from the pulses according to the invention.