Future research should aim to analyze a larger number of samples and explore other food products that may contain formalin

Oct 13, 2025 by wbrum.org 37 views

Identification of Formalin Content in Tofu Circulating in the City of Medan

Background

Tofu, a staple food in many Asian cultures, is a nutrient-rich product made from soybeans. Its soft texture and ability to absorb various flavors make it a popular choice for many consumers. However, the process of making tofu also involves the deposition of protein from soybeans, which can make it vulnerable to the use of dangerous preservatives such as formalin. The use of formalin as a food preservative is strictly prohibited, as it contains carcinogenic substances that can trigger the growth of cancer cells in humans. In high levels, formalin can even be fatal for health. Therefore, it is crucial to identify and prevent the use of formalin in food products, including tofu.

Research Purposes

This study aims to identify the formalin content in tofu circulating in the city of Medan. The study was conducted in the quantitative pharmaceutical chemical laboratory of the Faculty of Pharmacy, University of North Sumatra in July 2021. The method used in this study was a qualitative method using KMnO4 0.1 N reagents, which is an effective way to detect formalin. The research team collected tofu samples from various sources in the city of Medan and analyzed them using the KMnO4 reagent to determine the presence of formalin.

Research Results

The results showed that the reaction between tofu samples and KMnO4 produced color changes. The entire sample tested showed a pink color when reacted, but did not turn clear. Conversely, the color turns light brown, which indicates negative results for the formalin content. Thus, all tofu samples examined are declared free from formalin. This finding is significant, as it suggests that tofu products in the region are safe for consumption and do not contain harmful substances that can harm health.

Conclusion

From the identification results that have been carried out, it can be concluded that there are no food additives in the form of formalin in tofu circulating in the city of Medan. This is an encouraging finding, as it shows that tofu products in the region are safe for consumption and do not contain harmful substances that can harm health. However, public awareness and supervision of food safety remain very important to prevent the use of preservatives that are not allowed.

Relevance and Implications

The importance of this research not only lies in the findings related to formalin, but also on awareness of food safety as a whole. In the context of society that is increasingly concerned with health, understanding of the dangers of formalin and supervision of food products must continue to be improved. With accurate information about the content in food, consumers can make better choices, and increase confidence in local products.

Through this kind of research, it is expected that there will be encouragement for producers to be more transparent about the production process and materials used in their food. In addition, synergy between the government, producers, and consumers is needed to maintain food security and quality in Indonesia, especially in big cities like Medan. By working together, we can ensure that food products are safe and healthy for consumption.

Limitations and Future Research Directions

While this study provides valuable insights into the formalin content in tofu circulating in the city of Medan, there are some limitations to consider. The study only analyzed a limited number of tofu samples, and the results may not be representative of the entire population of tofu products in the region. Future research should aim to analyze a larger number of samples and explore other food products that may contain formalin.

Conclusion

In conclusion, this study provides valuable insights into the formalin content in tofu circulating in the city of Medan. The findings suggest that tofu products in the region are safe for consumption and do not contain harmful substances that can harm health. However, public awareness and supervision of food safety remain very important to prevent the use of preservatives that are not allowed. By working together, we can ensure that food products are safe and healthy for consumption.

References

[1] World Health Organization. (2019). Formaldehyde. Retrieved from https://www.who.int/news-room/fact-sheets/detail/formaldehyde
[2] National Institute for Occupational Safety and Health. (2020). Formaldehyde. Retrieved from https://www.cdc.gov/niosh/topics/formaldehyde/default.html
[3] Food and Agriculture Organization of the United Nations. (2019). Food Safety. Retrieved from https://www.fao.org/food-safety/en/

Appendices

[Appendix 1] List of tofu samples analyzed in this study
[Appendix 2] Results of KMnO4 reagent analysis
[Appendix 3] Conclusion and recommendations for future research
Frequently Asked Questions (FAQs) about Formalin in Tofu

Q: What is formalin and why is it a concern in food products?

A: Formalin is a chemical compound that is commonly used as a preservative in various industries, including food, cosmetics, and pharmaceuticals. It is a known carcinogen and can cause serious health problems if ingested in large quantities. In food products, formalin can be used to extend shelf life and prevent spoilage, but it is strictly prohibited in many countries due to its potential health risks.

Q: How does formalin affect human health?

A: Formalin can cause a range of health problems, including cancer, neurological damage, and reproductive issues. Ingesting formalin can lead to symptoms such as nausea, vomiting, and diarrhea, and in severe cases, it can cause respiratory failure and even death.

Q: What are the symptoms of formalin poisoning?

A: The symptoms of formalin poisoning can vary depending on the amount and duration of exposure. Common symptoms include nausea, vomiting, diarrhea, abdominal pain, and headaches. In severe cases, formalin poisoning can cause respiratory failure, seizures, and even death.

Q: How can I identify if a food product contains formalin?

A: Formalin can be detected using various chemical tests, including the KMnO4 reagent test. This test involves reacting the food sample with a solution of potassium permanganate, which will turn pink if formalin is present. However, it is essential to note that this test is not foolproof and may produce false negatives.

Q: What can I do to avoid formalin in food products?

A: To avoid formalin in food products, it is essential to choose products from reputable manufacturers and suppliers. You can also check the ingredient list and look for certifications from regulatory agencies. Additionally, cooking and heating food products can help to break down formalin and reduce its toxicity.

Q: Can formalin be removed from food products?

A: Formalin can be removed from food products using various methods, including washing, soaking, and cooking. However, it is essential to note that formalin can penetrate deep into food products, making it challenging to remove completely. In some cases, formalin may be irreversibly bound to the food product, making it difficult to remove.

Q: What are the consequences of consuming formalin-contaminated food products?

A: Consuming formalin-contaminated food products can lead to serious health problems, including cancer, neurological damage, and reproductive issues. In severe cases, formalin poisoning can cause respiratory failure, seizures, and even death. It is essential to report any suspected cases of formalin contamination to the relevant authorities.

Q: How can I stay safe from formalin in food products?

A: To stay safe from formalin in food products, it is essential to be aware of the risks and take precautions. You can choose products from reputable manufacturers and suppliers, check the ingredient list, and look for certifications from regulatory agencies. Additionally, cooking and heating food products can help to break down formalin and reduce its toxicity.

Q: What can I do if I suspect that a food product contains formalin?

A: If you suspect that a food product contains formalin, it is essential to report it to the relevant authorities. You can contact your local health department, food safety agency, or regulatory agency to report the suspected contamination. Additionally, you can also contact the manufacturer or supplier of the product to request information about their testing and quality control procedures.

Q: How can I get involved in food safety initiatives to prevent formalin contamination?

A: You can get involved in food safety initiatives by participating in public awareness campaigns, volunteering with local food safety organizations, and advocating for stronger regulations and enforcement. You can also support organizations that work to improve food safety and reduce the risk of formalin contamination. By working together, we can create a safer and healthier food system for everyone.