As a beloved beverage, maintaining the quality of tea is crucial. Packaging bags play an indispensable role in the preservation process of tea leaves. Choosing the appropriate packaging bag can not only effectively extend the shelf life of tea, but also maintain its unique aroma and taste. So, what bag is the best for packaging tea? This article will explore in detail the characteristics of tea, the advantages and disadvantages of common packaging materials, and how to choose packaging bags based on the type of tea.
1、 Characteristics and packaging requirements of tea
Tea is a natural plant-based product with the following characteristics:
（1） Hygroscopicity
Tea contains a large amount of hydrophilic components, such as polyphenols, proteins, etc., which can absorb moisture from the air. If packaged improperly, tea leaves are prone to moisture, leading to a decrease in quality. For example, when green tea is dampened, its color will change from fresh green to dark yellow, and its aroma will also become dull.
（2） Easy to oxidize
The components such as tea polyphenols and tea pigments in tea undergo oxidation reactions under the action of oxygen. Taking black tea as an example, its theaflavins and thearubigins gradually decompose during the oxidation process, causing the color of black tea to darken and the taste to become lighter.
（3） Easy to adsorb odors
Tea has strong adsorption properties and is easy to absorb odors from the surrounding environment. If tea leaves are placed together with odorous substances such as spices, cosmetics, etc., the tea leaves will absorb these odors, thereby affecting their original aroma.
（4） Sensitive to light exposure
The pigments and aroma components in tea undergo photochemical reactions under light. Long term exposure to light causes the color of tea leaves to darken and the aroma to dissipate. For example, some high-end green teas may gradually lose their fresh and tender aroma under strong light, and even exhibit aged flavors.
