Bamboo is sold as the eco-friendly choice : fast-growing, renewable and natural. Plates, cups, bowls and children's dinner sets made from bamboo come with words such as biodegradable, compostable and plastic-free printed on the box. The reality is rather different.
Bamboo has to be processed a fair bit before it can be used for items such as paper, plates or sheets. This processing means that, while it may be sustainable, it is not necessarily green. And in the case of moulded bamboo tableware, it is not necessarily safe either.
Two quite different things are sold under the same bamboo label. The first is solid bamboo, or pressed bamboo leaf and sheath, which is cut, cleaned and shaped with little more than heat and pressure. The second, and by far the most common in the shops, is bamboo fibre tableware : ground bamboo powder mixed with a plastic resin, usually melamine-formaldehyde, and moulded into shape.[1] The bamboo is little more than a filler. What you are eating from is, for practical purposes, a plastic plate.
A typical manufacturing process for moulded plates looks like this :[2][3]
Every one of those steps uses energy, water or chemicals.
If the binder is melamine resin, the finished product is neither biodegradable nor compostable. Melamine-formaldehyde is a thermoset : once cured it cannot be melted down again, and mixed with plant fibre it cannot go in with ordinary plastics recycling either. It ends up in landfill, like any other plastic, while the box it came in said otherwise.
Melamine resin is made from melamine and formaldehyde. Once cured it is fairly stable, but it is not inert, and the bamboo filler appears to make it worse.
Eating hot and acidic food from such plates can transfer formaldehyde and melamine to the body. Think of tomato sauces, citrus, vinegar dressings, or hot soup served straight from the pot.
In Europe, bamboo is not on the list of substances authorised for plastic food contact materials, so bamboo-melamine products are illegal there. A year-long EU coordinated action, ending in April 2022, recorded 748 cases : 644 already on the market and 104 stopped at the border. In one case, melamine migration was 3.5 times, and formaldehyde 25 times, the permitted level. The European Commission also called out the marketing : the natural, eco-friendly, compostable and organic claims were false, because the articles are made of plastic and mislead the consumer.[9][10]
In the UK, environmental health officers were still finding them on sale in 2023.[11] In New Zealand and Australia they are freely available.
Let's not forget the 2008 scandal in China, where milk and infant formula were laced with melamine. Melamine is rich in nitrogen, and the standard protein tests measure nitrogen, so watered-down milk passed as high-protein milk. Six infants died, around 300,000 children were affected and some 54,000 were hospitalised, mostly with kidney stones and kidney damage. Two people were executed for it.[12] Melamine is not something you want in your food in any quantity.
I would argue that glass is more green. A glass or ceramic plate is made from abundant raw materials, contains no resin, does not leach melamine or formaldehyde, goes in the microwave and the dishwasher, and lasts for decades. Glass can be recycled over and over. Stainless steel is the sensible choice for children. Even a plain plastic plate, honestly labelled, is arguably better than a melamine-bamboo plate dressed up as natural.
Bamboo may well be sustainable as a crop. But by the time it has been fertilised, harvested, chipped, pulped, bound in resin and moulded, the green label has largely been lost, and what is left is a plastic plate that leaches into hot food.
Bamboo - deposit