Biscuit Fat Blend Preventing Stickiness and Oxidation
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Solution Overview
Problem
Biscuits and crackers with high saturated fatty acid (SAFA) content are not healthy, but replacing them with low SAFA oils like sunflower or canola oil results in sticky dough and oxidation issues during baking and storage, leading to undesirable flavors.
Innovation Solution
A fat blend with at least 30 wt.% polyunsaturated fatty acids, comprising 50-85 wt.% highly unsaturated oil and 15-50 wt.% palm oil fraction with a melting point of 27-38 °C, characterized by a low solid fat content at 25 °C, which prevents dough stickiness and oxidative instability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If low SAFA oils like sunflower oil or canola oil are used to replace high SAFA fats, then the saturated fatty acid content is reduced and healthiness is improved, but the dough becomes very sticky during preparation
Solution Approach 1:
The patent combines multiple fat components with different properties: a low-SAFA oil (sunflower, canola, or soybean oil) providing health benefits and PUFA content, a palm oil fraction (melting point 24-40°C) providing structure and preventing stickiness, and optionally a trans-fat-free shortening for additional functional properties. This blending merges the advantages of each component while compensating for their individual drawbacks.
Solution Approach 2:
The invention creates a composite fat system consisting of multiple oil and fat components in specific proportions. The composite blend achieves a balance between healthiness (low SAFA, high PUFA), workability (reduced stickiness through palm fraction), and oxidative stability (protected by controlled solid fat content), which no single fat component could achieve alone.
2Quantity of substance
If low SAFA oils containing appreciable levels of PUFA are used, then the PUFA content is increased and healthiness is improved, but the oils are easily oxidized during baking and storage leading to off-flavours
Solution Approach 1:
The patent incorporates palm oil fraction with a controlled melting point (24-40°C) that provides a protective matrix around the PUFA-rich oils during storage. This pre-established protective structure cushioning the vulnerable PUFA from oxidation triggers, reducing the formation of off-flavours before they can develop significantly during storage.
3Ease of operation
If hydrogenated vegetable oils are used to reduce dough stickiness, then the solid fat content is increased and dough handling is improved, but trans-unsaturated fatty acids are formed which are unhealthy
Solution Approach 1:
The patent uses a palm oil fraction with a relatively low melting point (24-40°C) that provides the necessary solid fat content for dough handling without requiring hydrogenation. This shorter-chain saturated fat source achieves the structural benefits of hydrogenated fats while avoiding trans-fat formation, effectively replacing the harmful substance with a healthier alternative that serves the same functional purpose.
Data Source
AI summary
One aspect of the present invention relates to a method ofpreparingbiscuits or crackers, said method comprising (i) preparing a dough by combining flour, water, leavening agent, a fat blend and optionally further bakery ingredients; and (ii) baking the dough; wherein the fat blend contains at least 30 wt.% of polyunsaturated fatty acids and comprises: 50-85 wt.% of a highly unsaturated oil selected from the group consisting of sunflower oil, soybean oil, rapeseed oil, cottonseed oil, safflower oil, marine oil, corn oil, olive oil, linseed oil and combinations thereof; and 15-50 wt.% of a palm oil fraction having a melting point within the range of 27-38 ºC; and wherein said fat blend is further characterised by a solid fat content at 25 ºC of less than 10 wt.%. The fatblend of the present invention can suitably be used to prepare a biscuit dough or a cracker dough that does not suffer from stickiness. Furthermore, despite the high level of unsaturated fatty acids in the fat blend the biscuits and crackers made with this fat blend exhibit a surprisingly high oxidative stability. Other aspects of the invention relates to a biscuit dough or cracker dough as well as to a baked biscuit or a baked cracker containing the aforementioned fat blend.