Omar Khalid
Rumours of plastic rice being passed off as real rice have been circulating since 2010, particularly on social media. While food safety agencies have found no evidence to support these claims, it is still important to know how to identify plastic rice for your safety. Plastic rice is believed to be made from polystyrene, a toxic chemical, and other chemicals such as phthalates, which can be harmful to humans. Here are some ways to identify cooked plastic rice.
| Characteristics | Values |
|---|---|
| Smell | Plastic rice may release a plastic smell when heated |
| Floatation | Fake rice will float in water |
| Bounce | Plastic rice will bounce when rolled into a ball |
| Burn | Fake rice will burn |
| Composition | Plastic rice is made of polystyrene, a toxic chemical |
| Origin | Plastic rice originated in China |
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What You'll Learn
Float test: Fake rice will float in water
While there is little evidence that plastic rice is a widespread problem, rumours of it being sold in Africa and Asia have circulated online since 2010. If you want to stay on the safe side, you can perform a float test to check if your rice is plastic.
The float test is a simple way to check if your rice is plastic. All you need is a glass or bowl, water, and a spoon or stirrer. First, fill the glass or bowl with water. Then, add a tablespoon of rice to the water and stir it for a few seconds. Wait about 30 seconds for the mixture to stop swirling. If the rice is floating, it's likely to be fake. Real rice will sink to the bottom due to its density, while plastic rice will float to the surface.
It's important to note that some dirt or debris may float to the surface, but all rice grains should sink. If any grains float, it's a sign that your rice may not be real. Additionally, when cooking your rice, keep an eye out for a layer of thick residue from melting plastic. If you're boiling your rice on the stovetop, check it after 10 minutes. If you're cooking it in the microwave, check it after 3 minutes.
While the float test is a simple way to check for plastic rice, it's important to note that food safety agencies have yet to find evidence of plastic rice being sold as a widespread problem. However, if you're concerned or want to be cautious, the float test is a quick and easy way to check the authenticity of your rice.
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Burn test: Fake rice will smell like plastic when burnt
The ""fake rice" or "plastic rice" rumour has been circulating online since 2010, with no evidence supporting these claims. Food safety agencies have not found any evidence of plastic rice being manufactured and mixed with real rice. However, if you want to be cautious, there are a few tests you can perform to check for plastic rice. One such test is the burn test, which involves burning a small amount of rice and observing the smell. Fake rice will typically emit a plastic smell when burnt.
To perform the burn test, you can follow these steps:
- Take a small amount of rice and place it in a safe container, such as a metal bowl or plate.
- Use a lighter or match to ignite the rice. Be careful to avoid burning yourself and perform this step in a well-ventilated area.
- Observe the smell of the burning rice. If it emits a plastic-like or chemical odour, it may indicate the presence of synthetic materials.
- Extinguish the flame safely and dispose of the burnt rice properly.
It is important to note that burning rice may produce smoke and unpleasant odours, so ensure proper ventilation during the test. Additionally, exercise caution when handling open flames.
While the burn test can provide some indication of potential synthetic rice, it may not be conclusive. Other factors, such as cooking methods or impurities in the rice, could also influence the smell. Therefore, combining the burn test with other suggested tests, such as the water test or microwave test, could provide more comprehensive results. These additional tests involve observing whether the rice sinks in water or checking for unusual melting behaviour when heated in a microwave or pan.
It is worth mentioning that the concept of plastic rice stems from rumours and viral videos on social media. While there have been concerns and investigations into rice quality and safety, food authorities have not found widespread evidence of plastic rice being passed off as genuine rice. Nevertheless, performing these simple tests can provide peace of mind and help ensure the rice you consume is safe and authentic.
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Bounce test: Fake rice will bounce if rolled into a ball
Since 2010, rumours have been circulating online that plastic is being sold as rice. These rumours were fuelled by videos showing people bouncing rice balls, which they claimed proved the rice was fake. The videos often showed a small portion of cooked rice being rolled into a ball, which was then bounced on a hard surface without breaking. However, food safety agencies have found no evidence to support these claims.
One viral video posted by an Indian living in Oslo, Norway, showed a packet of India Gate brand rice. The man in the video, Mandeep Singh, claimed that the rice could be rolled into a ball and bounced on a hard surface, and that this was proof that it was plastic rice. The video generated nearly 3 million views in two weeks, and India Gate's parent company KRBL Limited obtained an injunction to restrict anyone from distributing the video online.
KRBL Limited issued a statement explaining the science behind the rice ball phenomenon. They said that during the cooking of rice, the starch molecules break down in the presence of water, allowing the rice to attain a state of plasticity with increased viscosity, gel strength, and tensile strength. The starch also becomes fluffy and adhesive, and when shaped into a ball, it will bounce due to volume expansion and water/air entrapment.
While it is possible for rice to be rolled into a bouncing ball, this does not mean that the rice is made of plastic. Rice is composed of carbohydrates and proteins, which can cause it to bounce if cooked properly. Dr Nagappa G Malleshi, a former head of Grains, Science and Technology at the Central Food Technological Research Institute in Mysore, explained that rice is 80% starch, which contains amylose and amylopectin. When rice is cooked, the starch swells and leaches out, making the rice sticky. When mashed and rolled into a ball, the rice sticks together and traps air, causing it to bounce. The bounciness of the ball depends on the amylose content of the rice. Dr VP Singh, former head of the Division of Genetics at the Indian Agricultural Research Institute-IARI, also explained that rice has adhesive and cohesive properties due to its high starch content, which is why it forms a ball, and the ball bounces due to volume expansion and air entrapment.
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Microscopy: Scanning electron microscopy can be used to analyse rice samples
Scanning electron microscopy (SEM) is a powerful technique that can be used to analyse rice samples and identify the presence of plastic rice in cooked or raw rice. This method involves comparing the compositional and morphological properties of fake rice and real rice.
Rice is a vital source of energy for half of the world's population, and its consumption is widespread. However, concerns about plastic rice being passed off as real rice have circulated since 2010, particularly on social media platforms. These rumours originated in China and later spread to other regions, including West Africa in 2016. While food safety agencies have not found conclusive evidence to support these claims, it is essential to address these concerns for consumer safety.
SEM analysis of rice samples can provide valuable insights into the structure and composition of rice grains. This technique allows researchers to visualise the surface morphology of rice, including the shape, size, and distribution of starch granules, protein bodies, and endosperm cells. By comparing the structural characteristics of real rice with suspected plastic rice, it is possible to identify any anomalies or discrepancies that may indicate the presence of plastic or other adulterants.
For instance, studies utilising SEM have revealed that high-temperature conditions can cause cracks between amyloplasts in rice seeds, resulting in shape changes from uniform to round. Additionally, high-temperature-susceptible lines tend to exhibit smaller amyloplast fragments compared to high-temperature-tolerant lines. These observations provide valuable information about the impact of temperature on rice grain quality and can help identify potential indicators of heat-induced alterations in rice samples.
Furthermore, SEM can be employed to analyse the endosperm morphology of different rice varieties, including wild and cultivated rice. The endosperm plays a crucial role in determining the nutritional value of rice through its component parts, such as starch, protein, lipids, and fibre. By studying the endosperm structure using SEM, researchers can gain insights into the functional properties of starch and the overall nutritional profile of various rice types.
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Country of origin: Plastic rice is most prevalent in Asia
Rumours of plastic rice being sold in Asia and Africa have been circulating on social media since 2010, with the story reaching Africa in 2016. The rumours originated in China, where videos were shared of rice that could bounce, burn with a plastic smell, or wouldn't cook normally. While there is little evidence to support these claims, the rumours were fuelled by concerns over food safety, particularly after the 2008 Chinese milk scandal. The Ghana Food and Drugs Authority, as well as Nigerian health authorities, have since investigated and found no evidence of plastic rice being sold in their markets.
The notion of plastic rice is not entirely unfounded, as there have been instances of companies producing rice substitutes and passing them off as premium grains. In one case, ordinary rice was passed off as premium "Wuchang" grains. Additionally, in 2011, there were reports of rice being produced with potatoes and industrial sticky resin, which may have contributed to the rumours. However, it is important to note that rice, when cooked properly, can also bounce due to its carbohydrate and protein composition.
While plastic rice in the literal sense may not exist, there have been instances of rice being poorly stored for up to a decade, resulting in mould contamination. To restore its appearance, fraudsters have been known to bleach the rice and spray it with paraffin wax, altering its cooking properties and leading to its moniker of "plastic rice". This type of rice is more likely to be sold in regions with less stringent food safety measures, such as Sub-Saharan Africa and certain parts of Southeast Asia.
Artificial rice, on the other hand, is a legitimate product made from broken rice and fortified with vitamins and minerals. Examples include NutriRice and Ultra Rice, which have been used to address malnutrition and improve nutritional status. These products are created using hot extrusion technology, which embeds vitamins and minerals within the rice, preventing their removal during washing and cooking.
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Frequently asked questions
There are a few ways to identify cooked plastic rice. One is to put a grain of rice in a glass of water. If it floats, it's likely plastic rice. Another way is to burn the rice. If it burns with a plastic smell, it may be plastic rice.
Plastic rice is made of polystyrene, a toxic chemical. It is not always made with plastics, however. Sometimes, waste or expired grains are used with some vitamins to make fake rice.
Yes, plastic rice is dangerous. It is made of harmful chemicals, such as phthalates, that can affect your hormonal and reproductive system.
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