Food flavorings can impart special flavors and textures to food. As an additive, they not only compensate for and enhance the flavor loss of food during processing and transportation, but also increase the added value of the product. However, there are still many problems in the practical application of flavorings. For example, during processing and storage, flavorings are prone to react with other components, affecting the flavor of the food and reducing the stability of the product. Reasonable microencapsulation of flavorings, by encapsulating them with gel-like substances, can expand their application range. Currently, microencapsulated flavorings have gradually become the mainstream direction of flavoring development.
Generally speaking, a complete fragrance usually consists of four types of ingredients: the main fragrance agent, auxiliary agent, top fragrance agent, and fixative agent. Or it can be composed of three types of fragrances: top fragrance, body fragrance, and base fragrance. The fragrances used for flavoring baked foods are usually a mixture of various fragrances that are blended in a certain proportion and through a specific process to obtain a fragrance with a certain aroma. They can be the products of the Maillard reaction or biotechnology, or they can be essential oils, resins, and other products obtained from natural substances through processing.
Top notes, also known as head notes, are fragrances with high volatility and strong diffusion power. They have a short retention time and the fragrance disappears after evaporation. Top notes can give food its initial delightful sensation, making the essence aroma have appeal and imagination.
The aroma that follows the top note is the main fragrance of the essence, with a medium level of volatility. The main fragrance ingredients constitute the characteristics of the essence’ aroma and are the most important component of the essence’ fragrance.
Kishan, also known as tail note, refers to the final aroma of the fragrance. The volatile degree of base notes is low and they have retention properties. Base notes not only enable the fragrance to last longer, but also constitute the basic part of the fragrance’s aroma characteristics.
Food flavorings can be classified according to their fragrance types, mainly including fruit type, meat type, vegetable type, and floral type, etc.; they can also be classified by their properties, such as water-soluble, water-oil dual-purpose, oil-soluble flavorings, emulsified flavorings and powder flavorings; and they can be classified by their raw materials, mainly including natural flavorings, natural equivalent flavorings and artificial synthetic flavorings.
Food flavorings can first impart various fragrances to baked foods. Some food bases do not have their own aroma; when flavoring agents are added, they can acquire various pleasant scents, such as fruit flavors, vegetable flavors, etc.
Secondly, ensure the stability of the product’s aroma quality. Since the fragrance is prepared according to the same formula, it can guarantee that the aroma of each batch of products remains consistent.
Thirdly, enhance and supplement the flavor of food. Some baked goods, due to limitations in processing techniques and time, often lack sufficient flavor or have unpleasant odors. By adding food flavoring agents, their flavor can be improved and supplemented, and the undesirable flavors can be masked.
It is worth noting that since the components of food flavoring are mostly volatile substances, they will volatilize and undergo changes in aroma during processing and storage. Therefore, the selection of the processing route in the baking food industry is particularly important. At the same time, the loss rate of the flavoring should be calculated to control the amount of addition, so as to avoid the loss of aroma.
The sensitive components of the flavoring agent undergo reactions under the influence of light, heat, oxygen and moisture, resulting in changes in the flavor components. Therefore, when baking foods are undergoing fermentation or baking, appropriate measures should be taken to protect the sensitive components of the flavoring agent.
The microencapsulation of fragrance can not only preserve the original physical and chemical properties of the fragrance, but also endows the fragrance with special practicality.
In baked foods, microcapsule essences can prevent the loss of fragrance. The composition of essences is complex, with many components having extremely high volatility, and the volatility of various components varies greatly, which leads to distortion of the fragrance type. By microencapsulating, the loss of volatility is inhibited, and the aroma is retained intact, thereby improving the stability of the storage and use of essences.
Meanwhile, microencapsulation can protect the fragrance from adverse external factors such as light, oxygen, temperature, humidity, and pH. This significantly enhances the resistance to oxygen, light, and heat, and improves stability, which is of great significance for baked foods.
Furthermore, the controlled release of microcapsule essences can be defined as a method by which the core material substance is released from the microcapsules at a specific occasion, at a specific time, and at a specific rate. In baked goods, this property of microcapsule essences can ensure the stability of the fragrance throughout the product’s shelf life.
Microencapsulation can also isolate and protect the active ingredients in the fragrance, preventing some unsaturated aldehyde components in the fragrance from reacting with proteins in food, thereby ensuring the flavor and texture of the food.
In conclusion, due to the sustained-release property of microcapsules, the loss of aroma components during the shelf life of products is avoided, ensuring the quality of the food. Therefore, in baked goods, if different production processes are combined and appropriate methods, techniques, and the amount of flavoring are selected, products with better aroma can be obtained.
The application of food flavorings in baked goods
