Journal
COMPREHENSIVE REVIEWS IN FOOD SCIENCE AND FOOD SAFETY
Volume 16, Issue 5, Pages 881-894Publisher
WILEY
DOI: 10.1111/1541-4337.12291
Keywords
patent literature; potassium chloride; salt substitute; taste improver; umami
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Funding
- food processing and pharmaceutical company Podravka d.d.
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High dietary sodium intake (DSI) represents a major health-related public issue in most countries all over the world. Such a diet can lead to increased risk of hypertension and related cardiovascular diseases. This situation has resulted in important public policies for various salt reduction strategies. One of these is based on the use of salt substitutes or salts with reduced sodium content. Among several options, potassium chloride (KCl) has proved to be a key nutritional ingredient for this purpose. It provides similar properties like common salt (NaCl), but with several unwanted side effects, of which the most important have relatively offensive side tastes: bitter, acrid, and metallic. To successfully formulate KCl-based salt substitutes, numerous taste-improving agents and formulation concepts have been used. The field of salt substitutes is mainly described in the patent literature. Since patents are both scientific and legal documents, careful and critical consideration is required when using them as a source of scientific information. This review brings a deep insight into the area of KCl-based salt substitutes with a focus on the patent literature through the eyes of food science and technology. The most important classes of taste-improving agents that have been employed in numerous formulation concepts of KCl-based salt substitutes are nutritionally acceptable mineral salts; food acids, amino acids, and their nutritionally acceptable salts; simple carbohydrates and sugar substitutes; food polymers; umami ingredients; spices, vegetables, and flavors; miscellaneous taste improvers; as well as a plethora of their specific combinations. A critical review of the respective patent literature is given.
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