Explanation of the Performance Characteristics and Applications of Commonly Used Food Additives.

Food additives are an essential component of the modern food industry. They play a crucial role in improving the color, aroma, taste, nutritional content, and overall quality of food products. Additionally, they help optimize processing conditions, prevent food spoilage, and extend the shelf life of food items. As a result, the food additive industry holds a significant position in the modern food manufacturing sector.

Definition and Functions of Food Additives:

1. Definition: Food additives refer to artificial or natural substances added to food products to enhance their quality, color, aroma, taste, as well as to fulfill preservation and processing requirements.

2. Functions and Development Trends of Food Additives:

   a) Improving food quality: Enhancing the overall quality of food products to meet consumer expectations regarding flavor, color, and texture.

   b) Facilitating rational, hygienic, and convenient food processing, promoting the mechanization, automation, and scaling of the food industry.

   c) Ensuring resource conservation and cost reduction in the food industry, while significantly elevating food quality, value, and generating noticeable economic and social benefits.

   Development Trends of Food Additives:

   a) Exploration of natural, nutritious, and multifunctional food additives.

   b) Focus on diversification and specialization of additives.

Types of Food Additives:

Food additives can be categorized based on their source into natural and artificial additives. According to their functions, they can be grouped as follows: fortifying agents, preservatives, antioxidants, thickeners, emulsifiers, chelating agents (including stabilizers and coagulants), quality improvers, flavor enhancers, colorants, edible flavorings, and spices.

Glucose Delta-Lactone, abbreviated as GDL or lactone, is a non-toxic, edible substance with the molecular formula C6H10O6. It appears as white crystalline or powdery form, nearly odorless, and tastes initially sweet and then sour. GDL is commonly used as a coagulant, primarily in the production of tofu, and can also serve as a coagulant for protein in dairy products.Shandong Zhongxing Food Technology Co., Ltd. has our own brand - FuXing

.Our Products Glucono-delta-lactone,Ferrous gluconate,Zinc gluconate,Gluconic Acid Solution.

Applications of Glucose Delta-Lactone:

1. Tofu Coagulant: Using GDL as a coagulant for protein in tofu production results in a white, tender texture without the bitter taste associated with traditional brine or gypsum methods. The use of GDL also prevents protein loss, yields a high tofu production rate, and provides convenient usage.

2. Dairy Gelatin Agent: GDL is not only used as a coagulant for tofu production but can also be applied as a coagulant for dairy protein in the production of yogurt and cheese. Research indicates that GDL acidification yields gel strength two times higher for cow's milk gel and eight to ten times higher for goat's milk gel compared to fermentation-based methods. The difference in gel strength for fermented yogurt is likely due to the interference of fermentative substances (biomass and polysaccharides) with the gel interaction between proteins. Moreover, GDL added at 3% acidification and kept at 30°C under incubation generates gel structures similar to those produced by lactic acid fermentation. It has also been reported that adding 0.025%-1.5% GDL to buffalo milk results in the desired curd pH, with the specific addition amount varying according to buffalo milk fat content and coagulation temperature.

3. Quality Improvers: Using GDL in luncheon meat and canned pork can enhance the effect of coloring agents, thus reducing the use of high-toxicity nitrite, while also providing emulsifying, preservative, and gelling properties, thereby improving the quality of meat paste-type canned food. The maximum recommended addition amount is 0.3%. Studies have shown that adding GDL at 4°C can enhance the elasticity of myofibrillar proteins, increasing gel strength for both myofibrillar protein and actomyosin regardless of their coexistence or separate presence. Additionally, a mixture of GDL (0.01%-0.3%), ascorbic acid (15-70ppm), and sucrose fatty acid ester (0.1%-1.0%) added to dough can improve the quality of bread. Incorporating GDL into fried foods can help conserve oil.

4. Preservatives: Studies by Saniea, Marie-Helence, and others indicate that GDL significantly delays and inhibits the production of bacteriophage in lactic acid bacteria, ensuring the normal growth and reproduction of lactobacilli. Adding an appropriate amount of GDL to milk prevents the instability of cheese products caused by bacteriophages. Qvist, Sven, and others researched the preservative properties of GDL in large red sausages, finding that adding 2% lactic acid and 0.25% GDL effectively inhibits the growth of Listeria. Large red sausages inoculated with Listeria and stored at 10°C for 35 days showed no bacterial growth, while samples without preservatives or with only added sodium lactate demonstrated rapid bacterial growth at the same storage temperature. However, it is worth noting that excessive GDL usage may cause some individuals to perceive an unusual odor. Additionally, it has been reported that using a GDL and sodium acetate mixture in a 0.7-1.5:1 ratio can extend the shelf life and freshness of bread.

5. Acidifiers: GDL, as an acidifier, can be added to sweet fruit jellies and fruit gels such as vanilla essence and banana-flavored desserts. It is the main acidic substance in composite leavening agents, slowly producing carbon dioxide gas, leading to uniform and delicate bubbles and creating uniquely flavored pastries.

6. Chelating Agents: GDL, as a chelating agent, can prevent the formation of milkstone and tartaric acid in the dairy and beer industries.

7. Protein Coagulants: In industrial wastewater containing protein, the addition of a coagulant formed by combining GDL, gallium salt, and magnesium salt can cause protein aggregation and precipitation, which can be removed by physical methods.

Precautions:

Glucose Delta-Lactone is a white, powdery crystalline substance that can be stored for an extended period under dry conditions. However, it is prone to decomposition into acid, particularly in a moist environment or water solution. Within 30 minutes at room temperature, some lactone will partially decompose into acid, and at temperatures above 65°C, the hydrolysis rate accelerates. At temperatures exceeding 95°C, it quickly transforms entirely into gluconic acid. Therefore, when using lactone as a coagulant, it should be dissolved in cold water and used within half an hour. It is not advisable to store its aqueous solution for an extended period.

Russell Chen

Feel free to inquire

sales@fxfood.net

Whatsapp:008613563081519