Size-dependent enhancement in salt perception: Spraying approaches to reduce sodium content in foods

Enhancing the perception of saltiness and reducing NaCl levels in snacks through sensory interaction: Immobilizing NaCl nanocrystals in Litsea oleoresin-sunflower seed oleogels

Excessive dietary salt intake leads to health issues, while reducing NaCl content compromises flavor. Therefore, identifying methods to decrease salt levels without sacrificing flavor is crucial. This study investigated the sensory interaction between the saltiness of NaCl and the pungency of Litsea oleoresin. Glyceryl monostearate (6.6%) and soy lecithin (4.4%) were used as gelling agents to create oleogels, which were then employed to immobilize NaCl nanocrystals, optimizing sensory interactions. NaCl nanocrystals (427.73 ± 61.98 nm) were encapsulated in a Litsea oleoresin-sunflower seed oleogel system with uniform distribution. Sensory evaluation indicated that the NaCl nanocrystal/Litsea oleoresin@oleogel system, with moderate pungency, significantly enhanced perceived saltiness intensity (29.00 ± 1.14, compared to the control, 18.48 ± 1.12) (P < 0.05). When applied to potato chips, this system noticeably increased saltiness perception. This research provides a promising approach for developing low-sodium yet flavorful foods.

A review of the world's salt reduction policies and strategies - preparing for the upcoming year 2025

Excessive consumption of dietary sodium is a significant contributor to non-communicable diseases, including hypertension and cardiovascular disease. There is now a global consensus that regulating salt intake is among the most cost-effective measures for enhancing public health. More than half of the countries worldwide have implemented multiple strategies to decrease salt consumption. Nevertheless, a report on sodium intake reduction published by the World Health Organization revealed that the world is off-track to meet its targeted reduction of 30% by 2025. The global situation regarding salt reduction remains concerning. This review will center on domestic and international salt reduction policies, as well as diverse strategies, given the detrimental effects of excessive dietary salt intake and the existing global salt intake scenario. Besides, we used visualization software to analyze the literature related to salt reduction research in the last five years to explore the research hotspots in this field. Our objective is to enhance public awareness regarding the imperative of reducing salt intake and promoting the active implementation of diverse salt reduction policies.

Application of Encapsulation Strategies for Probiotics: From Individual Loading to Co-Encapsulation

Consumers are increasingly showing a preference for foods whose nutritional and therapeutic value has been enhanced. Probiotics are live microorganisms, and their existence is associated with a number of positive effects in humans, as there are many and well-documented studies related to gut microbiota balance, the regulation of the immune system, and the maintenance of the intestinal mucosal barrier. Hence, probiotics are widely preferred by consumers, causing an increase in the corresponding food sector. As a consequence of this preference, food industries and those involved in food production are strongly interested in the occurrence of probiotics in food, as they have proven beneficial effects on human health when they exist in appropriate quantities. Encapsulation technology is a promising technique that aims to preserve probiotics by integrating them with other materials in order to ensure and improve their effectiveness. Encapsulated probiotics also show increased stability and survival in various stages related to their processing, storage, and gastrointestinal transit. This review focuses on the applications of encapsulation technology in probiotics in sustainable food production, including controlled release mechanisms and encapsulation techniques.

Evaluation of Chemical and Sensory Characteristics of Sauerkraut Juice Powder and its Application in Food

Sauerkraut juice is rich in bioactive compounds; however, it is considered a byproduct of the production process. An innovative solution was found through the process of spray-drying to obtain sauerkraut juice powder. The aim of this study was to evaluate chemical and sensory characteristics of sauerkraut juice powder (SJP) and its application in foodstuffs. For SJP, total phenol content, antiradical activity, and nutritional value were determined, and the results showed that SJP is rich in minerals, especially calcium and potassium, as well as organic acids and vitamin C. SJP contains 12% NaCl and a total phenol content of 359.54 mg GAE 100 g^-1 dw. SJP has umami attributes, such as sweet, sour, and salty. Sensory tests-descriptive, rate-all-that-apply, overall liking, and volatile profile determination-were carried out separately in SJP experimental samples with olive oil and sour cream. Among the sweet, sour, and salty flavours, garlic, yogurt, and mayonnaise were also mentioned. In the detection of volatile compounds, leafy and grassy green aromas with light almond were identified in the samples with olive oil and butter and rancid cheese and fishy/amine odours were identified in samples with sour cream. There were significant differences in the overall likability of samples, but the experimental samples with SJP were more popular than control samples; therefore, SJP may be used as a salt alternative in food applications.

Carnauba wax utilization in salt encapsulation: application in bread

The present work aims to develop encapsulated NaCl in carnauba wax for bread application, to reduce the salt utilization and assess its impacts on the rheological dough parameters and saltiness perception. Encapsulated salt was obtained blending salt crystals and molten Carnauba wax. Four different bread formulations were produced: 2.0% non-encapsulated salt; 2.0% Encapsulated Salt; 1.5% Encapsulated Salt; 1.0% Encapsulated Salt. Farinograph and alveograph analyses were performed to assess the dough rheology parameters and sensory analysis was conducted to evaluate saltiness. Encapsulation was effective to control Na⁺ ions release. They vary from 17 to 32 ppm the dissolution of sodium ions in the non-encapsulated and encapsulated samples, respectively. The alveograph and farinograph analyses showed that the 1.5E bread formulation was the closest to the control sample in rheological properties. Finally, a sensory analysis showed no difference in the saltiness perception between control and 1.5% encapsulated salt (4.65 and 4.69 respectively), indicating that carnauba wax encapsulated salt effectively reduced until 35% of salt the bread without changing the saltiness.

Effect of Salt Content Reduction on Food Processing Technology

Higher salt intake is associated with the risk of cardiovascular and kidney diseases, hypertension and gastric cancer. Salt intake reduction represents an effective way to improve people’s health, either by the right choice of food or by a reduction of added salt. Salt substitutes are often used and also herb homogenates are treated by high pressure technology. Salt reduction significantly influences the shelf life, texture, pH, taste, and aroma of cheese. The composition of emulsifying salts or starter cultures must be modified to enact changes in microbial diversity, protease activity and the ripening process. The texture becomes softer and aroma atypical. In bakery products, a salt reduction of only 20–30% is acceptable. Water absorption, dough development, length and intensity of kneading and stability of dough are changed. Gluten development and its viscoelastic properties are affected. The salt reduction promotes yeast growth and CO₂ production. Specific volume and crust colour intensity decreased, and the crumb porosity changed. In meat products, salt provides flavour, texture, and shelf life, and water activity increases. In this case, myofibrillar proteins’ solubility, water binding activity and colour intensity changes were found. The composition of curing nitrite salt mixtures and starter cultures must be modified.

Physicochemical design rules for the formulation of novel salt particles with optimised saltiness

Novel sodium reduction strategies are urgently required by the food industry. We hypothesised that redesigning salt crystals (size, density, hydrophobicity and flow properties) will offer a new route to increase saltiness and therefore reduce sodium. Eight salts were compared with different physicochemical properties, the resultant particles were characterised and adhesion to product, loss in-pack, rate of dissolution and ultimately saltiness perception were evaluated. Principle findings included that particle adhesion was driven by particle size (r = -0.85, p = 0.008), bulk density (r = -0.80, p = 0.017) and flow properties (r = 0.77, p = 0.015); loss in-pack was associated with particle size and hydrophobicity of the salt particle while dissolution and/or saltiness perception was also driven by particle size and hydrophobicity of the salt particle. The findings offer a new set of design rules for future ingredient design for the food and flavour industries.