Given the reasons, we can conclude that the use of formalin and other preservatives is really a serious problem if it is not solved immediately. Studies on the interactions between formaldehyde and proteins at the molecular level have been reported on the effects of the body`s carrier protein, serum albumin. Formaldehyde binding loosens the skeletal structure of albumin and causes exposure to amino acids of the aromatic ring in the internal hydrophobic region. Symptoms can affect personal awareness and make you feel tired or tired. [Citation needed] First, formalin is not intended for humans, but for biological samples and experiments. Formalin in biology is a 10% solution of formaldehyde in water, usually used as a disinfectant or to preserve biological samples. Thus, it is not for food preservatives. Of course, if it is used for food preservatives, it will be very dangerous for the human body. The third is that the difficult economy does not seem to be over.
This can make the situation worse. We all know that today`s economy is very difficult. People buy products for everyday use and meet their needs at a high cost. Things are getting more and more expensive. As a result, the cost of food production is rising. For example, the fish preservation process will be much less expensive if producers use formalin. They know the danger of formalin, but they do not care about the health of the other. What`s in their heads is how to make a profit. In the above text, the author explains the reasons why the use of formalin is a serious problem, tries to convince the reader to avoid formalin, and ends the text by relining the idea expressed. Therefore, the above text belongs to the analytical exhibition text. The structure of the analytical exhibition text consists of theses, arguments, and repetitions/conclusions.
In the section of the thesis, the author explains the topics to be discussed as well as his opinion on this subject. In the Arguments section, the author explains the reasons for supporting the thesis. In the Repetition/Conclusion section, the author again focuses on the topics covered or summarizes the information as a whole. „Formaldehyde“ was first used as a generic brand in 1893 after an earlier trade name, „Formalin“.  Formaldehyde is a common precursor to more complex compounds and materials. Formaldehyde is also used as a denaturant in RNA gel electrophoresis and prevents RNA from forming secondary structures. A 4% formaldehyde solution fixes pathological tissue samples at about one mm per hour at room temperature. The second reason is that there is no strict control on the part of the government. This condition really puts people`s health at risk. If the control is weak and the use of formalin has been widespread in the Indonesian regions, and these days it has really happened, the bodies of citizens will be heavily contaminated with poisons. Fish or grocers still sell their products that contain formalin and dangerous preservatives.
Can you imagine that our digestive system absorbs the substance that should be for human and animal corpses? Formaldehyde (/fərˈmældəhaɪd/ (listen) fər-MAL-də-hide, also /fɔːrˈ-/ (listen) for-) (systematic name methanal) is a natural organic compound with the formula CH2O (H−CHO). The pure compound is a colorless gas with a pungent odor that spontaneously polymerizes to paraformaldehyde (see Forms section below), so it is stored as an aqueous solution (formalin). It is the simplest of the aldehydes (R−CHO). The common name of this substance comes from its similarity and relationship with formic acid. A small amount of stabilizer, such as methanol, is usually added to suppress oxidation and polymerization. A typical commercial formalin may contain 10 to 12% methanol in addition to various metal impurities. Formaldehyde does not accumulate in the environment because it is broken down within a few hours by sunlight or bacteria in the soil or water. People quickly metabolize formaldehyde and convert it into formic acid so that it does not accumulate in the body.  In June 2011, the twelfth edition of the National Toxicology Program`s (NTP) Carcinogens (RoC) Report changed the listing status of formaldehyde from „reasonably expected carcinogen to humans“ to „known to be carcinogenic to humans.“    At the same time, a committee of the National Academy of Sciences (NAS) was convened to present an independent review of the proposed IRIS assessment of formaldehyde by the U.S.
Environmental Protection Agency, which provided a comprehensive assessment of health effects and quantitative estimates of the risk of adverse effects on humans.  Scandals erupted in both the Indonesian food anxiety of 2005 and the Vietnamese food anxiety of 2007 regarding the addition of formaldehyde to foods to extend shelf life. In 2011, after a four-year absence, Indonesian authorities discovered formaldehyde-containing foods sold in markets in a number of parts of the country.  In August 2011, the Sub-Department of Livestock and Fisheries in central Jakarta discovered that Cendol contained 10 parts per million of formaldehyde in at least two Carrefour supermarkets.  In 2014, the owner of two noodle factories in Bogor, Indonesia, was arrested for using formaldehyde in noodles. 50 kg of formaldehyde were confiscated.  Foods known to be contaminated included pasta, salted fish and tofu. It was also said that chicken and beer were contaminated.
In some places, such as China, manufacturers still illegally use formaldehyde as a preservative in food, exposing people to formaldehyde consumption.  In humans, taking formaldehyde has been shown to cause vomiting, abdominal pain, dizziness and, in extreme cases, can lead to death.  Formaldehyde tests are performed by blood and/or urine by gas chromatography-mass spectrometry. Other methods include infrared detection, gas detector tubes, etc., of which high-performance liquid chromatography is the most sensitive.  In the early 1900s, it was frequently added to milk bottles by U.S. dairy plants as a method of pasteurization due to a lack of knowledge and concerns about the toxicity of formaldehyde.  . A 1988 Canadian study of homes with urea-formaldehyde foam insulation found that formaldehyde levels as low as 0.046 ppm were positively correlated with eye and nose irritation.
 A 2009 review of studies showed a strong link between formaldehyde exposure and the development of childhood asthma.  It is easily oxidized by atmospheric oxygen to formic acid. For this reason, commercial formaldehyde is usually contaminated with formic acid. Formaldehyde occurs naturally and is „an essential intermediate in cellular metabolism in mammals and humans.“  „Formaldehyde is found in all living systems, from plants to animals to humans. It metabolizes rapidly in the body, quickly detaches, is not persistent and does not accumulate in the body.  Given its widespread use, toxicity and volatility, formaldehyde poses a significant risk to human health.   In 2011, the U.S. National Toxicology Program described formaldehyde as „known to be carcinogenic to humans.“    HCN, HNC, H2CO and dust have also been observed in the coma of comets C/2012 F6 (Lemmon) and C/2012 S1 (ISON).  . (X = R2N, RC(O)NR`, SH). The resulting hydroxymethyl derivatives usually react more.
Thus, amines produce hexahydro-1,3,5-triazines: condensation with acetaldehyde gives pentaerythritol, a chemical necessary for the synthesis of PETN, a highly explosive device.  Condensation with phenols results in phenol-formaldehyde resins. Methandiol, the predominant species in diluted aqueous solutions of formaldehyde. .