Will the packaging materials of raw coffee beans affect the flavor of coffee beans? what is the best packaging for raw coffee beans?

Sensory degradation of raw coffee beans may cause significant financial losses to producers, traders and roasters. However, although a certain degree of degradation is inevitable over time, the materials of coffee packaging may have a significant impact on the shelf life and quality of coffee beans.

Jute, high barrier plastic, vacuum: which is really the best? How much effect does the material actually have on beans? How do we measure it? Let's see.

Review of Green Coffee Packaging Materials

Some of the most common materials are linen, permeable plastics, high barrier plastics and vacuum.

Sack

Canvas made from natural fibers extracted from plants, jute or jute is the most traditional material used to make coffee bags. This is an environmentally friendly option; according to the Food and Agriculture Organization of the United Nations, it is "100% biodegradable, recyclable and therefore environmentally friendly." It is also durable and relatively cheap, making it by far the oldest coffee packaging material.

However, it does not provide moisture or oxygen protection-these are two factors related to poor coffee quality and even defects such as mold. The bag is permeable.

In addition, jute bags traditionally hold 60 kilograms of coffee (70 kilograms in some countries or regions). At the same time, plastic bags and container linings can store 1 to 20 tons of mung beans. Depending on the batch stored or shipped, the manufacturer may decide to choose a larger and therefore more efficient storage option.

Ordinary plastics

Plastic storage is most commonly made of polyethylene or polypropylene, ranging from 60kg bags to large bags and container linings. Compared with jute, this material is cheaper and more resistant to moisture and gas, but still has permeability.

High barrier plastics

Professor Fl á vio Meirabo é m is an agronomic engineer who specializes in vegetable production. He has devoted himself to the study of coffee for the past few years. High-barrier bags are "packages with different components and structures that prevent the exchange of gas and water between the interior and the atmosphere," he said. Its packaging is highly impermeable. "

Although high barrier bags are more expensive than other types of packaging, they are designed to maintain the quality of coffee for a long time by preventing chemical reactions with moisture and oxygen. You can find high barrier packaging in all sizes, including container linings.

Vacuum

After vacuum packaging, coffee should also be stored in impervious plastic bags. Then, in addition to sealing and isolating the raw coffee, negative pressure is generated to remove all air.

It is generally believed that multi-layer vacuum packaging is the most effective way to maintain the quality of raw coffee. However, due to the high cost, this method is usually only used for samples or small batches of special coffee.