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Home → Research → Inventions

Sustainable, edible straws made from wild grass are zero-waste alternative

To make things even better, the straws are also edible.

Mihai Andrei by Mihai Andrei
June 6, 2019
in Environment, Inventions, Pollution

After some Thailand supermarkets used leaves as packaging, south-east Asia is highlighting another innovation that could reduce plastic consumption: grass straws.

All image credits: Ống Hút Cỏ.

Straws might not seem like much, but they’ve become so ubiquitous that they’re posing a serious problem. According to one estimate, the US alone is producing 500 million straws every day, most of which end up in landfills or even worse — the oceans.

The world is starting to take action against plastic straws, with the UK banning plastic straws, and the European Union banning all single-use plastic. But in other parts of the world, action is much slower. With this in mind, Vietnamese entrepreneur Tran Minh Tien started producing straws from sedge grass. Particularly, a species called Lepironia Articulata, locally known as co bang.

Co bang grows naturally and in abundance in the Mekong Delta region in southwestern Vietnam, but Tien is farming it to ensure a steady producing. It’s already hollow, so it kind of naturally works as a straw, but the plant requires some processing for mass production. The plants are cleaned and cut to a fixed size of 20 cm (8 inches). Then, a rod is used to also clean them on the inside, and they are washed and rinsed one more time.

They can be sold “fresh” in this condition, and can be stored for up to two weeks in a refrigerator in airtight bags. But more commonly, the plants are also dried in the sun for three days and then baked in the oven. This way, the straws can be kept for up to six months at room temperature.

In both cases, the straws are also edible and packed in bunches using banana leaves, to avoid using plastic packaging. The straws are also fully biodegradable and compostable.

Currently, a bundle of 100 dry straws costs 100,000 Vietnamese dong ($4.3), and one fresh straw costing 60,000 Vietnamese dong ($2.6). The price is substantially larger than plastic straws, for which a bundle of 100 goes for around $1. It remains to be seen whether the higher price will be a strong disincentive or whether this idea will catch on.

At the moment, these grass straws are currently only available for sale in Vietnam.

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