On the market there are many commercially available plastic food containers that can be used in the microwave. However, according to experts, for the microwave oven, it is best to use glass, porcelain and porcelain dishes for reheating or defrosting food.
At supermarkets such as Co-opmax, BigC … in HCMC, buyers are free to choose plastic containers from disposable and disposable plastic material from 100% PP, standard type. FDA of the US used in the environment from -10oC to + 120oC, keep fresh fruit for 7 days … and the price is just over 30,000VND / 10 boxes, the highest is 60,000VND / box as Microban 2700ml box, imported at Thailand.
In addition, there are also plastic antiseptic boxes Ag +, plastic box made of PP plastic material combined with antibacterial microban to break the cell structure of bacteria, making bacteria can not grow.
The majority of plastic containers for food sold in temporary markets, sidewalks, often without labels and prices are also many times cheaper. Many types of boxes are said to be bought in Chợ lớn and commonly known as “normal plastic” price is only 1500 – 6000d / box with lid, can contain salt, sweet powder and also use melon, …
Ms. Nguyen Mong Hieu, residing in Phu Nhuan District, HCMC, uses plastic containers to store food on ice compartments, cool boxes and picking fruits after meals just to dessert. She used to look thin to use the ice compartment, broken, broken to remove, thick or branded in the market to keep cool, fast food.
Difficult to avoid poisoning when used at high temperatures
According to Associate Professor Ho Son Lam, senior researcher of the Institute of Applied Materials Science, Ho Chi Minh City, when used for packaging, containers at high temperature (containing water, milk, hot food) The additives in the resin will be absorbed into the food. There is a plastic resistant to high temperatures from 150-200oC, but it is necessary to know the origin and quality of it. Because of the high temperature resistance, manufacturers will have to add some additives, so the possibility of poisoning is unavoidable in the long run.
Dr. Dang Chi Hien, head of the Pharmaceutical Chemistry Technology Laboratory, Institute of Chemical Technology, said the polypropylene (PP) plastic is non-toxic with flexible features suitable for the production of food containers. But if PP is recycled from garbage, it is forced to use plastic additives to shape new shapes. These additives, when exposed to hot food from 70 to 80 ° C, will produce very dangerous toxins in human health.
On the market, the kind of product that is introduced is heat resistant plastic, which can be used to store foods cooked in the microwave. The plastic does not catch microwave waves (so it does not get melted when cooked), but the food inside it catches it, heating up and ripening. The temperature of the food will affect the plastic product, causing the plastic structure to change and consequently the toxin can stop contaminating the food.
Choose a safe product
Associate Professor Nguyen Cuu Khoa, director of the Institute of Chemical Technology warned that consumers still use plastic bags, plastic boxes for soup, soup and hot foods. They may contain a very toxic substance that affects the male genitals, such as DOP (phytalate). DOP exists at a rate of 5-10% in the plasticizer used. It acts as a female hormone, so it is very harmful for men and boys when genitals are incomplete. It is best to choose plastic products with transparency, gloss, bright colors, surface is not scratched, scratches.
Dr. Dang Chi Hien affirmed that “microwave-safe” or “microwavable” labels on plastic containers mean that they will not leak, break or break apart. Rotate in the microwave. It is best to use glass, porcelain or porcelain dishes to heat up or defrost foods in the microwave.