Is it true that preservative-free foods are less healthy?

Recently, the Internet is full of a food expert's statement:
"
If manufacturers claim that their products 'do not contain preservatives

,
I really a little afraid to eat. Foods without preservatives simply cannot be preserved for consumption.
"In the pursuit of nature, the pursuit of health today, preservatives by more and more people's exclusion. Many people only choose
"
no added
"
,
"
never contain preservatives
"
food, because

rest assured
".
, however, recently spread online a food expert's statement:
"
If manufacturers claim that their products 'do not contain preservatives

,
I really do not dare to eat. Foods without preservatives simply cannot be preserved for consumption.
"For a time, everyone was confused. Some netizens said:
"
do not contain preservatives can not eat? Doesn't that mean forcing us to eat preservatives?
"
also have netizens think,
"
think also, there is no anti-corrosion ingredients, food really can not be saved.
"So is it true that preservative-free foods are less healthy?recently, CCTV reporters randomly interviewed a number of consumers, respondents generally believe that marked

does not contain preservatives
" food is safer.Reporters investigation:
"
proof preservatives
"has become a selling point for the recent media exposure of
"
proof preservatives of food more unhealthy
"
rumors, CCTV network reporters visited Beijing, Chengdu and Lanzhou shopping malls and supermarkets. Reporters found that many foods in its packaging in a prominent position marked

this product does not contain preservatives
"
, some also wroteabsolutely does not contain any additives
."reporters found that most of the
"
not contain preservatives
"
,

absolutely does not contain any additives
"
of the food ingredients list, pigments, flavors, puffer, emulsions, sweeteners and other food additives are a lot, not the pure natural
"
,
"
no added
".
such as the label
"
does not contain preservativesa brand of egg yolk pie, its ingredients table is written on the sorbitol liquid, puffing agent, edible gelatin and so on. A brand of spicy wood ear tablets also contain sodium glutamate, antioxidants, taste nucleotides secondary sodium. Reporters noted that the world's many years of marketing brand drinks also contain preservatives, for example, Coca-Cola series Sprite
"
,
"
Jianjian
"
, Pepsi series
"
Meenda
" ingredient list are marked with anti-corrosion agent sodium benzoate.randomly interviewed a number of consumers who were choosing food, most of the respondents agreed that food labeled

proof preservatives
" is safer.nowadays,
"
no added
"
,
"
never contains preservatives
" food has become the object of many people's pursuit. enterprises: preservatives can be properly added can be safely used in a well-known ham sausage production base, staff told CCTV network reporter:
"
We all know that the microbial environment is everywhere, therefore, we use as food raw materials for food, meat, etc., from the beginning it is difficult to 'zero pollution
.
addition, the production and processing of food can not be completed in a vacuum process. Without preservatives, many foods can decay in a short period of time and cannot be transported over long distances, so people do not have a wide variety of food choices.
" Yang Guanfeng, president of the Guangdong Food Culture Research Association, told reporters that most foods are now mainly added to nitrite preservatives, nitrites are widely used in the world, through safety testing, can be safe to eat. Almost all foods contain preservatives, and if they are labeled as non-preservatives, it is doubtful whether the food producer is deceiving consumers. , Yu Guangfeng reminded consumers not to use
"
without adding any preservatives
" as a measure of food nutrition and safety standards. Experts: No preservatives will increase the risk of food Wang Zhiye, a food safety expert at Northwestern National University, told CCTV.com that the use of preservatives must be in accordance with the relevant national health standards, not overdosing, over-range use. the
of
that "foods that do not contain preservatives are " Wang Zhi-moon said this statement has some truth.
"
if the preservative-added food is not added, it will shorten the life of the food, increase the risk of food. For food that should be added, it must be used normally according to hygiene standards;
," Wang said. , a researcher at the China Food and Nutrition Information Exchange Center, told reporters that the rational use of preservatives in some foods is actually conducive to improving food safety. , for example, sausages are more likely to be contaminated with Botox if they do not use preservatives (sodium nitrite). Again, if bread, if not preservatives, can only be placed for a few days, moldy after can not be eaten, eating moldy bread may face greater risk. Said that the main purpose of using preservatives is to protect people's safety, not to harm people. Because, adding preservatives can kill microorganisms that invade food and prevent food corruption. If harmful microorganisms violate food success, they can grow and reproduce in food, causing food corruption, and may produce some toxic and harmful substances, which pose a threat to human health and safety. Said that some foods do not need preservatives, such as through ultra-high temperature sterilization with Le9er packaging dairy products, although the shelf life can be longer, but in fact did not add preservatives. The principle is that the most common treatment for such products is sterilization and sterile packaging. Before sealing the packaging, the food is sterilized, and then sealed aseptic packaging, sterilization treatment will kill the bacteria and their spores, so there are no microorganisms, food can be preserved for a longer period of time. In supermarkets, we often see some merchants with
"
without adding any preservatives
" as a sales gimmick, which He Guangfeng believes is not a measure of food nutrition and safety standards. this shows that
is
that "foods that do not contain preservatives are
"
is unscientific. Experts stressed that food additives must be used in accordance with the prescribed variety, range and dosing. The rational use of food additives can not only improve the safety of food, but also safety for the human body. Food experts remind consumers to look at preservatives scientifically, when buying food, do not blindly believe that does not contain preservatives
",
and not because some food labels do not contain preservatives are misled by it.