Air is an omnipresent element that can have far - reaching effects on various materials, including gelatine capsules. As a seasoned gelatine capsule supplier, I've witnessed firsthand how air can interact with these delicate products. In this blog, I will delve into the complex relationship between air and gelatine capsules, exploring the impacts it has on their quality, stability, and overall performance.
Moisture in Air and Its Impact on Gelatine Capsules
One of the most significant components of air that affects gelatine capsules is moisture. Gelatine is a hydrophilic polymer, which means it has an affinity for water. When exposed to air with high humidity, gelatine capsules can absorb moisture from the surroundings.
The absorption of moisture can lead to several detrimental effects. First, it can cause the capsules to become soft and sticky. This softening can make them difficult to handle during the filling process, as they may deform or even stick together in the hopper of the encapsulation machine. As a result, the efficiency of the production line can be significantly reduced, and there may be an increase in the number of defective capsules.
Moreover, the moisture - induced softening can also compromise the mechanical strength of the capsules. Capsules are designed to maintain their shape and integrity until they reach the target site in the body. However, if they become too soft due to moisture absorption, they may break prematurely in the packaging or during transportation. This not only leads to product wastage but also poses a risk to the quality and efficacy of the encapsulated product.
On the other hand, in low - humidity air, gelatine capsules can lose moisture. This loss of moisture can cause the capsules to become brittle. Brittle capsules are more prone to cracking and breaking, which can expose the contents inside. This is particularly problematic for pharmaceutical or nutritional products, as the exposed contents may be sensitive to air, light, or moisture, leading to degradation of the active ingredients.
Oxidation Caused by Air
Air also contains oxygen, which can initiate oxidation reactions in gelatine capsules. Oxidation is a chemical process that involves the reaction of a substance with oxygen. In the case of gelatine capsules, oxidation can occur on the surface of the capsule or within the gelatine matrix itself.
The oxidation of gelatine can lead to changes in its appearance, such as yellowing or browning. This change in color can be a sign of deterioration and may affect the visual appeal of the product. Consumers often associate a clear and colorless appearance with high - quality capsules, so any discoloration can be a turn - off.


In addition to the aesthetic changes, oxidation can also affect the chemical and physical properties of the gelatine. It can break down the peptide bonds in the gelatine molecule, leading to a decrease in its molecular weight. This can result in a decrease in the gel strength and viscosity of the gelatine, which in turn can affect the capsule's ability to hold its shape and protect the encapsulated contents.
Furthermore, oxidation can accelerate the degradation of the active ingredients encapsulated within the capsules. Many pharmaceutical and nutritional substances are sensitive to oxidation, and the presence of oxygen in the air can speed up their breakdown. This can lead to a decrease in the potency and effectiveness of the product over time.
Airborne Particles and Contamination
Air is not just a mixture of gases; it also contains various airborne particles such as dust, pollen, and microorganisms. These particles can pose a significant threat to the quality and safety of gelatine capsules.
Dust particles can settle on the surface of the capsules during the manufacturing, storage, or transportation process. These particles can not only affect the appearance of the capsules but also introduce impurities. If the dust contains contaminants such as heavy metals or chemicals, it can contaminate the capsules and the encapsulated product, posing a risk to the health of consumers.
Microorganisms present in the air, such as bacteria, fungi, and yeasts, can also contaminate gelatine capsules. Gelatine provides a suitable environment for the growth of some microorganisms, especially if the capsules are exposed to air with high humidity. Microbial contamination can lead to spoilage of the capsules and the encapsulated product. It can also cause health problems for consumers if they ingest the contaminated capsules.
Strategies to Mitigate the Impact of Air
As a gelatine capsule supplier, we are well - aware of the challenges posed by air and have developed several strategies to mitigate its impact.
Controlled Environment Manufacturing: We manufacture our Hard Empty Gelatine Capsules in a controlled environment where the temperature and humidity are carefully regulated. By maintaining a low - humidity environment, we can prevent the capsules from absorbing excessive moisture and becoming soft. At the same time, we also ensure that the humidity is not too low to prevent the capsules from becoming brittle.
Proper Packaging: We use high - quality packaging materials that provide a barrier against air, moisture, and light. Our packaging is designed to keep the capsules protected from the external environment during storage and transportation. For example, we use blister packs that are made of materials with low oxygen and moisture permeability.
Antioxidant Addition: In some cases, we add antioxidants to the gelatine formulation to prevent oxidation. Antioxidants work by scavenging free radicals that are produced during the oxidation process, thus preventing the oxidation of the gelatine and the encapsulated contents.
Air Filtration: In our manufacturing facilities, we have advanced air filtration systems in place. These systems remove airborne particles and microorganisms from the air, reducing the risk of contamination. The air is continuously filtered and recirculated to maintain a clean and sterile environment.
Conclusion
In conclusion, air can have a profound impact on gelatine capsules. Moisture, oxygen, and airborne particles in the air can all affect the quality, stability, and safety of the capsules. However, by implementing appropriate strategies such as controlled environment manufacturing, proper packaging, antioxidant addition, and air filtration, we can effectively mitigate these impacts.
If you are in the market for high - quality gelatine capsules, we are here to provide you with the best products and solutions. Our team of experts is always ready to assist you with any questions or concerns you may have regarding gelatine capsules. Whether you need capsules for pharmaceutical, nutritional, or other applications, we can meet your specific requirements. Contact us today to start a fruitful discussion about your procurement needs and let's work together to achieve your goals.
References
- Brandt, A. E., & Heymann, H. (Eds.). (2017). Food Chemistry and Food Processing. Wiley - Blackwell.
- Gennadios, A., Weller, C. L., & Goodner, K. L. (1997). Edible Films and Coatings: Quality and Preservation of Fresh and Frozen Foods. Technomic Publishing.
- Kester, J. J., & Fennema, O. R. (1986). Edible films and coatings: a review. Food Technology, 40(12), 47 - 59.
