What is the purpose of amber bottles?

Answered by Brandon Riddell

The purpose of using amber bottles, particularly in the context of light-sensitive products, cannot be overstated. As a sommelier and brewer, I have had firsthand experience with the importance of amber bottles in protecting delicate and light-sensitive substances such as , , and even essential oils.

One of the main benefits of using amber glass is its ability to provide the best protection against harmful light wavelengths, particularly UV light and blue light. UV rays, in particular, can cause a process known as photooxidation, which can have detrimental effects on the quality and stability of light-sensitive products. This process occurs when UV light interacts with certain compounds present in the product, leading to the formation of free radicals and subsequent chemical reactions that can result in off-flavors, aromas, and even the degradation of beneficial compounds.

By using amber glass bottles, which have a distinctive dark brown color, the majority of UV light, blue light, and other light wavelengths under the 450-nanometer range are effectively blocked or filtered out. This provides a significant level of protection for the contents of the bottle, preserving their quality and integrity. As a result, the use of amber bottles is particularly crucial for products that are sensitive to light, such as certain wines, craft beers, and essential oils.

In my experience as a sommelier, I have encountered numerous wines that have been stored in amber bottles, especially those with delicate and complex flavors. These bottles not only enhance the aesthetical appeal of the wine but also serve a vital purpose in maintaining its freshness and preventing unwanted degradation. The amber glass acts as a shield, safeguarding the wine from the harmful effects of light exposure, which can lead to the development of unpleasant aromas and flavors, commonly referred to as “lightstruck” or “skunky” characteristics.

Similarly, as a brewer, I have witnessed the significant impact of using amber bottles in preserving the quality of craft beers. Lightstruck flavors in beer are often described as having a skunky or “off” aroma, which can be highly undesirable for both brewers and consumers. By utilizing amber bottles, brewers can effectively protect their beer from the damaging effects of light, ensuring that the unique flavors and aromas created during the process remain intact.

To summarize the purpose of amber bottles, their primary function is to protect light-sensitive products from the harmful effects of UV light, blue light, and other light wavelengths under the 450-nanometer range. This protection is essential for maintaining the quality, stability, and integrity of delicate substances such as wine, beer, and essential oils. By utilizing amber glass, producers can safeguard their products and ensure that consumers can enjoy them at their best, free from the negative impact of light exposure.