Oil-Water Emulsion Coating for Low-Fat Snack Crispness
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Solution Overview
Problem
Existing methods for producing low-fat snack foods fail to achieve the desired crispness, flavor, and texture of conventional fried products while minimizing fat content and potentially harmful by-products like acrylamide, and often require complex and costly processes.
Innovation Solution
A process involving the application of an oil-water emulsion to food pieces followed by controlled moisture reduction, without frying, to achieve a predetermined fat and moisture content, using enzymes and cations to enhance texture and flavor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If conventional frying methods are used to reduce moisture content, then crispness and texture are improved, but fat content increases exponentially and potentially harmful by-products are formed
Solution Approach 1:
The patent extracts the harmful element (hot oil) from the cooking process while retaining the desired functional outcome (crispness). By replacing oil frying with alternative moisture removal methods such as air drying, microwave drying, or supercritical carbon dioxide drying, the process achieves low-fat content without sacrificing the crisp texture that consumers expect from fried snacks.
Solution Approach 2:
The patent changes the fundamental parameter of the cooking medium from liquid oil to alternative methods (air, microwave, supercritical CO2). This parameter change allows moisture removal at lower temperatures and without the harmful effects of hot oil, while still achieving the desired moisture content reduction for crispness.
2Shape
If high temperatures are used to reduce moisture content, then crispness is improved, but potentially harmful by-products like acrylamide are formed
Solution Approach 1:
The patent removes the harmful high-temperature frying process that causes acrylamide formation. By extracting the hot oil element and replacing it with lower-temperature alternative drying methods, the process maintains moisture removal effectiveness while eliminating the formation of harmful by-products.
Solution Approach 2:
The patent converts the harmful effect of high-temperature frying into a beneficial low-temperature processing method. By using alternative drying techniques that operate at lower temperatures, the process achieves the same moisture reduction goal without the harmful side effects of acrylamide formation, effectively turning a harmful process into a beneficial one.
3Quantity of substance
If fat content is reduced to meet consumer health demands, then healthiness is improved, but desired taste and texture of conventional fried products are lost
Solution Approach 1:
The patent extracts the harmful hot oil from the process while maintaining the desired sensory properties. By using alternative moisture removal methods, the process achieves low-fat content while preserving the crispness and texture that contribute to the desirable taste and mouthfeel of conventional fried snacks.
Solution Approach 2:
The patent changes the processing parameters to achieve low-fat content without sacrificing quality. By using alternative drying methods with controlled temperature, time, and moisture gradients, the process maintains the textural and flavor characteristics that consumers associate with tasty fried products while significantly reducing fat content.
4Quantity of substance
If complex processing methods are used to remove oil, then fat content is reduced, but process complexity and cost increase
Solution Approach 1:
The patent extracts the complex oil removal steps from the process by using alternative methods that inherently avoid oil absorption in the first place. Methods such as air drying, microwave drying, or supercritical CO2 drying provide straightforward moisture removal without requiring complex multi-step oil removal procedures.
Solution Approach 2:
The patent replaces expensive and complex oil removal equipment with simpler, more cost-effective drying systems. By using conventional drying technologies adapted for low-fat processing, the process achieves fat reduction without the need for expensive specialized equipment or complex process integration.
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 results in snack foods with reduced fat content and minimized acrylamide formation, maintaining the desired texture and flavor of conventional fried products, while eliminating the need for hot oil frying and associated complications.
Implementation Method 1
applying an oil-water emulsion to the food pieces to provide an amount of oil to the food pieces
Implementation Method 2
reducing the initial moisture level to a moisture level of from 0.2 to 80% by weight
Data Source
AI summary
A process for the application of a predetermined amount of oil to food pieces comprises: (a) providing or receiving a plurality of cut or shaped food pieces; (b) applying an oil-water emulsion to the food pieces for a time sufficient to provide a predetermined amount of oil to the food pieces and so that the food pieces have an initial moisture level after applying the oil-water emulsion; and (c) reducing the initial moisture level, in the absence of frying in oil, to a moisture level of from about 0.2 to about 80% by weight to provide a cooked food product, comprising said predetermined amount of oil, wherein step (c) does not comprises frying the food pieces in hot oil