• Mon to Sun: 8:00am – 6:00pm
Get Sample

Call to Anytime

+8615122310608

What you need to know about the various applications of propylene glycol in food

Propylene Glycol in Food

Many of the products you buy at the supermarket may contain additives, which appear on the ingredient list under a variety of chemical names. Propylene glycol is one such common additive widely used in food, cosmetics, bath products, and other industrial applications. In this article, we will discuss its use in food.

Introduction

Propylene glycol (PG) is a polyol food additive widely used in the food industry. It has multiple functions, including moisturising, solubilising and anti-freezing.

What are the applications of propylene glycol in food?

Propylene glycol in food is widely used as an additive in products such as marinades/sauces, cake mixes, frosting, fast food, bread, and dairy products. Its functions in these products are as follows:

  • Humectant: Prevents baked goods from drying out and maintains the product’s ideal soft texture.
  • Thickener and stabiliser: Helps maintain the stability of food ingredients or thicken them, inhibits ice crystal growth, and improves the texture and mouthfeel of food.
  • Solvent: Propylene glycol dissolves other food additives or nutrients used in processing, such as colourants, flavourings, or antioxidants.
  • Emulsifier: Propylene glycol effectively combines water and oil that are normally immiscible in food, such as in salad dressings or low-fat foods.
  • Preservation: Propylene glycol has a unique synergistic effect in food preservation. It reduces the water activity of food systems, thereby inhibiting the growth of most spoilage bacteria such as Escherichia coli and Staphylococcus aureus in processed meat products and flavoured dairy products. Additionally, it can be used in combination with traditional preservatives like benzoates and potassium sorbate to enhance preservation efficacy.
Safety, Regulations, and Consumer Perception of Propylene Glycol in Food

The Joint Expert Committee on Food Additives (JECFA), the U.S. Food and Drug Administration (FDA), the European Food Safety Authority (EFSA), and the World Health Organization (WHO) all recognise propylene glycol as safe. In the United States, it can be used as a direct or indirect food additive. In Europe, it is only permitted as a solvent for colourants, emulsifiers, antioxidants, and enzymes.

The World Health Organisation recommends that the maximum daily intake of propylene glycol per kilogram of body weight is 11.4 milligrams (25 milligrams/kilogram). Overall, there have been no reports of negative or toxic effects from propylene glycol in food, except for allergic individuals and one case of overconsumption.

Emerging applications of propylene glycol in food innovation

As technology advances and consumer trends evolve, the application of propylene glycol in food innovation continues to expand, with its core advantage lying in the combination of multifunctionality and safety.

  1.  In the field of 3D-printed food, propylene glycol plays a crucial role as a n additive by regulating material flow and freezing point, thereby enhancing printing precision. This is particularly evident in the 3D printing of products such as candies, chocolates, and ice cream.
  2.  In innovative practices aimed at replacing animal protein, propylene glycol leverages its multiple functions to enhance the texture of plant-based foods, such as in cultured meat media and vegetarian cheese products.
  3.  Propylene glycol, with its natural attributes and multifunctionality, has become an important choice for clean-label formulations, serving as an alternative to synthetic preservatives and providing bio-based solutions.
Future trends: Will propylene glycol remain relevant in food?

Future，the relevance of propylene glycol in food will not only remain strong but will continue to grow due to technological advancements, policy support, and changing consumer trends.

  1. Technological aspects: The moisturising and preservative functions of biotechnologically produced propylene glycol in baked goods and plant-based sauces will make it the preferred choice for clean label formulations. Additionally, the synergistic effects of propylene glycol with other ingredients are being increasingly explored, such as through co-formulation enhancement technology to expand its functions, making it difficult to replace with a single alternative in complex food systems.
  2. Market demand: In the trend toward replacing animal proteins, propylene glycol plays an indispensable role. As 3D-printed food equipment becomes more widespread, the demand for propylene glycol—a key component in the formation of 3D-printed foods—will grow exponentially.
Conclusion

Propylene glycol plays a crucial role in modern food manufacturing. Despite ongoing controversy surrounding synthetic additives, propylene glycol remains a well-researched and safe ingredient when used responsibly. As food technology continues to advance, the importance of propylene glycol will continue to grow, and its applications are likely to expand, particularly in innovative areas such as alternative proteins and food printing.

Tags:

Additives
Food additives

Product Categories

Recent Posts

Please Do Not Hesitate To Contact Us If You Have Any Requirements.

Contact Us
About Us
Product Category

Get A Free Quote

Send Us A Message

We are always committed to delivering optimal chemical solutions for all application scenarios.