What Are The Most Natural Antioxidants?

Natural antioxidants have received increasing attention in recent years because they play a key role in many industries such as food, medicine and cosmetics. They can usually play a protective role through various mechanisms such as reducing oxygen content, interrupting chain reactions, inhibiting enzyme activity, chelating metal ions, etc. In particular, these naturally extracted compounds not only help maintain product quality and enhance health benefits but also effectively protect against harmful free radicals.

Antioxidants are substances that can inhibit oxidation reactions. Oxidation is a chemical reaction that produces free radicals, which can cause cell damage. Although the human body can synthesize some antioxidants on its own, it also relies on dietary sources or supplements to maintain adequate antioxidant levels.

Our most common food antioxidants can generally be divided into two categories: synthetic antioxidants and natural antioxidants. Synthetic antioxidants such as BHA and BHT were widely used in the past, but in recent years they have gradually been questioned due to safety issues. Therefore, natural antioxidants represented by rosmarinic acid are very popular in the food and health fields due to their excellent antioxidant effects and high safety.

Based on the source: natural flavonoids and polyphenols.
Based on solubility: It can be divided into oil-soluble (such as tocopherol), water-soluble (such as vitamin C) and amphiphilic (such as ascorbyl palmitate).

Rosmarinic acid is a natural phenolic acid compound derived from rosemary, which has excellent antioxidant properties, much higher than common antioxidants such as vitamin E and caffeic acid.

Rosmarinic acid can effectively prevent free radical damage to cells, and its stability and high temperature resistance make it an ideal choice in the food industry. For example, rosemary extract can remain stable in an environment of up to 240°C, which makes it suitable for various high-temperature processed foods, such as fried foods and oil-rich foods. Rosmarinic acid also has multiple activities such as antiseptic and antibacterial, which can play multiple protective roles in food processing. It is widely used in food, beverages and medicines, so it has broad prospects in food preservation and safety.

The rosmarinic acid series of products launched by XIAN KINTAI BIOTECH INC uses advanced extraction technology to maximize the retention of the active ingredients of rosmarinic acid in the food industry, which can effectively extend the shelf life of food and is particularly suitable for the anti-oxidation protection of oil-rich foods and high-temperature processed foods. In addition, it can also help inhibit the oxidation and fading of meat products, maintain the original color and taste of ingredients, and provide consumers with safer and healthier food choices.

In the field of cosmetics, the antioxidant and antibacterial properties of rosmarinic acid provide a new direction for skin care products, helping to prevent skin aging and protect the skin from damage by external free radicals.

In the field of health, rosmarinic acid also shows a protective effect against certain diseases. For example, a study in the United States found that rosmarinic acid can protect retinal cells from oxidative stress damage and is expected to be used in vision protection products in the future. In addition, rosmarinic acid also shows potential value in reducing inflammation and improving the immune system, providing a new direction for future research.

Vitamin C (also known as ascorbic acid) is a white or light yellow water-soluble natural antioxidant, mainly extracted from fruits and vegetables, and is essential for protecting cell structures from oxidative damage: 

In the food industry, vitamin C inhibits oxidation reactions by combining with oxygen. It can be used in fresh fruits and vegetables, fruit juice drinks, and meat products to help maintain the color and flavor of food. In pickled meat products, vitamin C, as a coloring agent, can prevent the fading of meat and can effectively inhibit the formation of carcinogenic nitrosamines. Due to its safety and mild properties, vitamin C also plays a positive role in delaying aging and maintaining skin health, and has become one of the common ingredients in skin care products.

Tea polyphenols (TP) are a class of polyhydroxyphenol compounds extracted from tea leaves. The main components include catechins, flavonoids, anthocyanins, etc. Among them, the antioxidant properties of the catechin EGCG are particularly outstanding, even exceeding vitamin C. Tea polyphenols not only have enhanced antioxidant properties at high temperatures, but also have good antioxidant effects on animal fats and vegetable fats, making them suitable for use in a variety of food processing. In addition, tea polyphenols can also be used in combination with vitamin E, vitamin C, citric acid, etc., showing significant synergistic effects, further improving their antioxidant effects.

In practical applications, tea polyphenols are widely used in the food industry, especially in the preservation of fat and oil products. They can effectively prevent oxidation, thereby extending the shelf life of snacks and fried foods.

In the skin care industry, tea polyphenols are favored for their ability to resist ultraviolet rays and anti-aging properties, and have become the core ingredient of many skin care products.

Phytic acid is a strong antioxidant naturally present in plant seeds. Its antioxidant effect mainly comes from the chelation of metal ions, thereby inhibiting the occurrence of oxidation reactions. Phytic acid is commonly used in foods such as oils, meats, fruits and vegetables, and effectively prevents food from oxidative browning and fading. For example, adding a small amount of phytic acid to vegetable oil can significantly prevent rancidity, and can also prevent color variation in canned seafood products. In addition, phytic acid also performs very well in the fields of fruit preservation and meat preservation.

Food industry: Phytic acid performs well in preventing vegetable oil oxidation and maintaining the color and quality of fruits and vegetables. Adding phytic acid to vegetable oil can effectively delay the rancidity of oil.

Phytic acid is also widely used in canned aquatic products, pickled foods and fruit and vegetable preservation. For example, adding phytic acid can significantly slow down the blackening of fresh shrimp and extend the shelf life of aquatic products; in canned meat products, phytic acid can also effectively inhibit oxidation reactions. The strong metal chelating properties of phytic acid also make it used in the wine industry and water softening treatment.

In recent years, the synergistic enhancement of natural antioxidants has gradually become a research focus. Studies have shown that the combined use of multiple natural antioxidants can significantly improve the antioxidant effect.

For example, the synergistic antioxidant effect of tea polyphenols and vitamin C in the lard emulsified system is significantly higher than that of a single component. Similarly, the mixed use of phytic acid and vitamin E can produce a synergistic effect. This synergistic effect not only improves antioxidant performance, but also reduces the amount of antioxidants used, further reducing production costs.

However, natural antioxidants are sensitive to factors such as light, heat and pH, which complicates their use in formulations. Developing encapsulation techniques and stabilizers is key to improving the stability of these compounds.

In the future, the natural antioxidant industry will continue to explore more efficient extraction technologies and more environmentally friendly extraction processes to achieve larger-scale commercial applications. In addition, research on how to utilize the mechanism of action and synergistic enhancement of natural antioxidants in different food systems will further promote the popularity and application of natural antioxidants.

Natural antioxidants play a vital role in improving the safety and quality of food, drugs and cosmetics. As consumers' attention to health and natural products continues to increase, the demand for these compounds will continue to grow. Companies such as XIAN KINTAI BIOTECH INC. are at the forefront of this field, especially rosmarinic acid, which has been developed since 2015, showing the great potential of natural antioxidants in a variety of applications. With the continuous advancement of natural antioxidant technology and the in-depth research on synergistic enhancement, the application of natural antioxidants will be further expanded and play a more important role in food safety and health care.