What causes ground spices to lose aroma in plastic jars?

Question

Wondering why your spices lose their aroma so fast in plastic jars? Learn how the container material can affect the potency of your masalas.

Answer 1

Ground spices lose aroma in plastic jars primarily due to the permeability of plastic, which allows volatile aromatic compounds to escape, and exposure to air, light, and heat, which accelerate degradation.

Detailed Explanation:

Ground spices contain volatile oils that give them their characteristic aroma and flavor. These oils are susceptible to degradation and evaporation. Plastic jars, especially those made from thinner or less dense plastics, are often permeable, meaning they allow air and moisture to pass through. This permeability allows the volatile aromatic compounds in the spices to escape over time, leading to a loss of aroma.

Furthermore, exposure to air (oxidation), light (UV degradation), and heat (accelerated chemical reactions) can significantly speed up the degradation process. Oxygen reacts with the volatile oils, altering their chemical structure and diminishing their aromatic properties. Light, particularly UV light, can break down the compounds, and heat increases the rate of these reactions. The combination of these factors within a plastic jar contributes to the gradual loss of aroma in ground spices.

Pro Tip:

To preserve the aroma of your ground spices, store them in airtight glass containers in a cool, dark, and dry place. Avoid storing them near the stove or in direct sunlight.