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The COVID-19 pandemic has led to an increased demand for single-use masks, putting pressure on global plastic waste problems.

A single face mask can release as many as into the seas. According to a 2020 report by an environmental group , about 1.56 billion face masks entered oceans globally in 2020.

Face masks are made from combination of several types of plastic. There are several layers of plastic in one mask, primarily which are not easily decomposed and will remain in the environment for decades. It could take centuries for them to turn into smaller and smaller microplastics and nanoplastics.

As the mask wastes may contribute to plastic pollution, such as bisphenol A (BPA), which may have a , as well as heavy metals and disease-causing microbes. This is becoming a significant problem, particularly in countries with poor waste management. The race to find a sustainable solution for public health safety measures is urgent to reduce the global plastic problem.

As biotechnology researchers, we propose biodegradable disposal masks made from pineapple leaves to tackle pandemic-associated waste. Pineapple leaves contain high levels of cellulose, and thus can be a good alternative to plastic fibers.

The advantages of pineapple fiber

Our biodegradable, disposable masks are made from fibers from pineapple leaves. This pineapple-leaf fiber is made of , making them easy to decompose. As the fiber is immersed in the soil, it only takes three days for microorganisms such as fungi or bacteria to .

Pineapple leaves, which are typically discarded as agricultural waste, have been used to make products such as . It has a more delicate texture than many other vegetable fibers such as hemp, jute, flax and abaca. It has white and lustrous-like silk, about 60cm length on average, and can easily dyed in a range of different colors.

Pineapple fiber is . It contains cellulose, hemicelluloses and lignin as its primary components, which make the fiber light, easy to care for and attractive, with a linen-like appearance.

The fiber is also much better than regular cotton as it doesn't contain as many harmful chemicals left over from the manufacturing process. The fiber also can naturally degrade without releasing harmful toxins.

In contrast, cotton is conventionally grown with highly toxic pesticides and fertilizers, and treated with harsh chemicals during the manufacturing process and some of these chemicals are .

Pineapple-fiber masks are even to prevent infections.

However, pineapple fiber is not as strong as the plastic fiber, particularly in wet and humid conditions. This may be due to the penetration of water molecules into the molecular chain of cellulose fiber in the plant, which reduces its density and strength.

More research is needed to address this challenge.

Challenges and opportunities

As the world's , and one of its major consumers, Indonesia can grab the opportunity to lead biodegradable masks production, as well as tackling COVID-related waste.

However, the development of pineapple fiber masks in Indonesia still depends on public awareness and effective communication. To accelerate eco-friendly mask production, reusable organic mask producers, marketers, and policymakers must consider improving consumer behaviors by promoting healthy and eco-friendly habits.

Scientific analyses must also be encouraged by the government, science institutions, companies doing research and development, and also non-profit organizations in order to raise environmental awareness and encourage beneficial changes in lifestyle, consumption habits and behaviors.

To do that, we need to set an an integrated system with an strict requirements to improve mask producer responsibilities and incentives fees for environmentally friendly material.

In the end, instead of using plastic surgical masks, are we going to use this pineapple fiber mask? The decision is yours.