Food additives refer to natural or synthetic substances added to food for improving flavor, color, quality, preservation, processing performance and anti‑corrosion purposes. They enrich food varieties, facilitate food processing and storage, satisfy diverse market demands and help retain the nutritional value of food. Certain food additives carry nutritional benefits. When applied in compliance with national regulations and standards, proper dosages of food additives are beneficial to human health and promise bright development prospects.

1. Brief Introduction to Functional Food Additives

At the national level, many functionally‑active natural extracts have been incorporated into the catalogue of hygienic usage standards under GB 2760 (National Food Safety Standard‑Standard for Uses of Food Additives)Chinese St.... Functional food additives serve as raw materials for developing health‑care foods and fortified foods. They cover a wide range of categories with varied primary functions and characteristics.

2. Functions and Applications of Functional Food Additives

2.1 Sweeteners

Sweeteners fall into two major categories: non‑nutritive high‑intensity sweeteners and other non‑nutritive sweeteners. High‑intensity sweeteners include natural extracts and chemically‑synthetic products. Natural‑source high‑intensity sweeteners comprise mogrosides (monk‑fruit sweet), glycyrrhizin (licorice sweet), steviol glycosides and thaumatinU.S. Food .... Among commercially‑available natural high‑intensity sweeteners with notable health‑care properties, only glycyrrhizin together with its derivatives, potassium glycyrrhizinate and ammonium glycyrrhizinate, are listed as permitted food additives under GB 2760.

2.2 Preservatives and Antioxidants

Nisin is an edible protein substance obtained by fermentation. It can be digested and metabolized by human bodies, non‑toxic and harmless and regarded as a quasi‑natural substance, though it is not directly isolated from natural raw materials. Nisin inhibits sugar fermentation in oral cavities to protect teeth and suppresses the proliferation of Helicobacter pylori.

2.3 Natural Pigments

China approves more varieties of natural pigments for application than most countries worldwide. Many natural pigments possess health‑care and disease‑resistant properties with distinct physiological activities. Extracted from plant sources, natural pigments are generally allowed for use according to production requirements without strict dosage limits.

2.4 Thickeners

Most hydrocolloids and their degradation products exhibit physiological activities. For instance, high‑methoxyl pectin inhibits endogenous cholesterol synthesis and binds dietary cholesterol; partially hydrolyzed guar gum helps regulate blood pressure and blood lipids and stabilizes and improves protein properties in milk productsResearchGa.... Researchers point out that physiological functions of some conventional thickeners deserve further investigation. Animal tests indicate xanthan gum exerts immunomodulatory and antioxidant effects. Potassium alginate, a widely‑used thickener, delivers blood‑pressure‑lowering effects after low‑molecular‑weight modification.

3. Progress in Functional Food Additives

Conventional food additives mainly improve food color, aroma, taste and quality without nutritional or health‑care effects. By contrast, functional food additives not only optimize sensory properties of food but also realize nutritional fortification or health‑care enhancement for targeted consumer groups. China should capitalize on its unique domestic resources to develop functional food additives based on natural extracts and boost the growth of the whole industry. Guided by market demands and national development strategies, we shall realize industrialized utilization of natural resources so as to comprehensively lift enterprise competitiveness and product quality.

Food additives are closely linked to daily life and constitute a vital segment of the food industry. Nevertheless, driven by commercial interests, most manufacturers still focus publicity on conventional food additives. Along with economic development, consumers pay rising attention to food safety and pursue higher‑quality lifestyles. Conventional food additives can no longer meet market demand for functional foods. Consequently, functional food additives with positive physiological benefits have become mainstream products and are gaining increasing trust and favor from manufacturers and consumers.

For example, novel functional food additives derived from plant polyphenols and their derivatives have been developed in recent years. They exhibit prominent antioxidant and antibacterial capacity, 10‑20 times higher than vitamin E under equivalent conditions. As new‑type natural food additives, they are gradually replacing synthetic antioxidants such as BHT and BHA in food manufacturing. Tea polyphenols help ameliorate cardiovascular diseases, reduce cholesterol and relieve hypertension, hyperglycemia and hyperlipidemia; they also show anti‑cancer activity with significant inhibitory effects against liver cancer. Their mechanisms are summarized as follows: their antioxidant activity scavenges free radicals in human bodies for anti‑aging purposes; acting as a liver detoxifier, they reduce toxic hexavalent chromium (Cr⁶⁺) into less‑toxic trivalent chromium (Cr³⁺) for liver protection; serving as iron reductants, they convert non‑bioavailable ferric iron (Fe³⁺) into absorbable ferrous iron (Fe²⁺) to assist anemia treatment.

4. Conclusion

Against the backdrop of rapid socioeconomic growth and improved living standards, consumers attach greater importance to food safety and nutrition. Conventional food additives focus on preservation and sensory improvement and generally carry no nutritional or pharmacological value. Therefore, future research on food additives should prioritize the development of novel and plant‑sourced functional food additives. Such products can satisfy special consumer demands while enhancing food nutrition and health‑care performance.