has been circulating on the Internet about the wax in instant noodles. It is said that there is a layer of wax on the barrel of instant noodles. Because we can’t digest wax in our intestines and stomach, the paraffin will adhere to the stomach wall. A customer who often eats barreled instant noodles was operated and found that there was a layer of wax film in his stomach. There is even a layer of wax sprayed on each noodle of instant noodles, so it should be boiled with boiling water before eating, otherwise it will adhere to the stomach wall and the human body can not decompose. Does the paper container of instant noodles really contain paraffin? Is paraffin wax harmful to human body? What are

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paraffin?

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paraffin are all called petroleum waxes, which are by-products in the process of petroleum refining. Paraffin can be divided into liquid paraffin, solid paraffin, microcrystalline wax, vaseline and other products. In fact, wax is not something new. The history of wax application is very long. Before the large-scale appearance of petroleum wax, the main sources were animal wax and plant wax. For example, China’s beeswax is the wax secreted by the bee family and processed into beeswax. It was not until large-scale exploitation of oil and extraction of petroleum wax that wax was widely used.

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paraffin have a wide range of uses, such as automobile protection and anti-corrosion, explosive production, plate production, printing ink, daily chemical products and fresh-keeping of fruits and vegetables. Paraffin also has many uses in the food industry. China’s food additive standard GB2760 stipulates that paraffin can be used as food processing aids in potato chips, oil, candy and grain processing, mainly as defoamer or release agent; paraffin can also be used as the basic agent in gum based candy; in addition, paraffin can also be used as coating agent on the surface of fresh eggs, which has the effect of insect and ash prevention. In food packaging, paraffin wax can be used for impregnation of containers and packaging materials in contact with food, which mainly plays a waterproof role. However, paraffin wax is not allowed to be directly used in noodles, and there is no reason to use paraffin in the processing of noodles. Therefore, there is no paraffin on instant noodles. Does

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have wax?

is there any wax on the bowls (barrels) used for instant noodles in barrels and bowls? In fact, the “barrel” of barreled instant noodles is essentially a paper cup. Therefore, if you want to know whether there is paraffin wax in the instant noodle bucket, you have to start with a paper cup.

at present, the commonly used paper cups at home and abroad can be divided into three types according to the different coating: wax coated cup, straight wall double-layer cup and polyethylene coated cup. Wax coated cup is a paper cup with a layer of wax on its surface; the cup wall of a straight wall double-layer cup has two layers of paper, and there is air between the paper, which has good heat insulation performance; the polyethylene coated cup is covered with a thin layer of polyethylene on the wall.

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appeared around 1932 when the first waxed two-piece paper cup came out. On the one hand, waxing on paper cup can avoid direct contact between beverage and paper material, and can protect the adhesion of adhesive and enhance the durability of paper cup; on the other hand, it also increases the thickness of side wall, which greatly improves the strength of paper cup, so as to reduce the amount of paper necessary for making stronger paper cup and reduce the production cost. Under various conveniences, this paper cup coated with wax is rapidly popular and widely used We use it. However, paraffin wax has a disadvantage that its melting point is often low, often less than 60 ℃. If it’s used to hold hot drinks or hot food, paraffin will melt. When the temperature of noodles is over 90 ℃, paraffin will melt naturally. Because the waxed paper cup is separated by the wax layer, if the wax layer melts, the water will penetrate into the outside, making the paper cup soft and even leaking, which is easy to scald the user. Therefore, the waxed paper cup is not suitable for holding hot drinks and hot food, and the instant noodles are also applicable.

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in fact, there are three kinds of paper cups according to their uses: cold cups, hot cups and ice cream cups. Waxed cups are usually used to hold cold drinks. If you want hot drinks, you need to add a layer of lotion. The double wall cup is made of this kind of coating, and because of the good heat insulation of double cups, it is often used to make hot drink cups and ice cream cups.

however, now the more popular is polyethylene coated paper cup. Polyethylene coated cup is a relatively new technology. When the cup is cast, a thin layer of polyethylene (PE) plastic coating will be coated on the paper surface, which is equivalent to a layer of plastic film covering the paper cup. The biggest advantage of the polyethylene coated cup is that it can handle both cold and hot drinks freely. It can withstand high temperature of about 90 degrees, and it is also very good at water separation, so it is favored by the food industry. The use of paraffin coated cups may also affect the taste of instant noodles. Considering the advantages and disadvantages, manufacturers are not willing to use waxed paper cups (bowls). In the food industry, polyethylene coated cup is the mainstream paper cup product, and the paper cup with paraffin has been basically eliminated. Do

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paraffin have safety problems?

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still include waxed paper cups in the industry standards for paper cups. Although waxed paper cups are not used for hot drinks such as instant noodles, consumers may still come into contact with waxed cups, and we are more concerned about the safety of paraffin.

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were evaluated by the Scientific Committee on food (SCF) of the European Food Safety Agency (EFSA) in 1989 and concluded that it is safe to continue to use paraffin as a food additive. In 1995, the SCF continued to evaluate and proposed a temporary ADI of 0-4 mg / kg body weight for paraffin. In 2002, the Joint Expert Committee on food additives (JECFA) of the United Nations Food and agriculture qualification and the World Health Organization (who) conducted a comprehensive assessment on the safety of paraffin and other mineral oils. The evaluation showed that the ADI value of different paraffin products ranged from 10-20 mg / kg body weight. In 2009, the European Food Safety Agency (EFSA) confirmed the safety of high viscosity paraffin oil through comprehensive analysis, and proposed that the ADI value was 12 mg / kg body weight.

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in 2012, the European Food Safety Agency (EFSA) re evaluated the safety of mineral oil in food. The results showed that a variety of petroleum waxes, including paraffin wax and microcrystalline wax, had no acute toxicity or carcinogenicity. The ADI values of paraffin products were generally 0-4mg / kg body weight and 0-20mg / kg body weight. Therefore, a small amount of edible paraffin does not need to worry about its safety. In addition, most healthy adults except infants or people with serious digestive problems

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