1. Is food without food additives safer? breakdown
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Rumor: Recently, there are rumors on the Internet that food without food additives is more natural and safer.
Truth: An article in China Association for Science and Technology's popular science platform "Popular Science China" points out that food additives are synthetic or natural substances added to food for the purpose of improving food quality and preserving freshness. Whether food additives are added to food is determined by the nature and production technology of food, and the safety of food cannot be judged simply by whether there are food additives. Secondly, regulating the use of food additives can ensure food safety, and some foods are prone to spoilage because of their short shelf life.
2. Eat ginger for health in summer? There is no relevant research to prove
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Rumor: As the saying goes, "Eating radish in winter and ginger in summer doesn't need a doctor's prescription". In hot summer, many people choose to eat ginger to keep healthy, thinking that it can drive away cold and heat and is good for their health.
Truth: Yun, an expert in the food field, said that the concept of eating ginger in summer comes from traditional medicine, and the research based on modern scientific system has not yet clarified its claimed efficacy. "Hot" and "cold" are not concepts in modern science and cannot be judged by evidence-based and realistic thinking. "Although some studies have shown that eating ginger may help reduce vomiting and physical discomfort, it cannot solve the problem of dizziness. Moreover, its effect is not better than that of drugs. "
Yun Orfila also said that ginger, as a condiment and edible material, can be eaten as long as it is needed. All kinds of "taboos" are mostly delusions, so don't care.
3. Can't you eat watermelon overnight? Not so absolute
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Rumor: It is said that overnight watermelon will breed a lot of bacteria and cannot be eaten, even if it is covered with plastic wrap.
Truth: Ruan said that whether watermelon can be eaten safely depends on whether there are pathogenic bacteria. Watermelon is high in sugar and water, and it is really easy to breed bacteria. In addition, there are all kinds of bacteria hidden in the refrigerator. Don't leave them for too long after cutting, and eat them as soon as possible. Generally, if you cut watermelon into the refrigerator with a clean knife and clean plastic wrap, you can eat it even overnight.
4. Can't mung bean soup be eaten after refrigeration? normal phenomenon
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Rumor: In summer, mung bean soup has become a popular drink. Recently, it was said on the Internet that there would be a film on the surface of mung bean soup after cold storage, indicating that the food was spoiled and inedible.
Truth: Ruan, director of the Science and Technology Communication Department of Kexin Food Health Information Exchange Center, said that this is a normal phenomenon and there is no harm. He said that in the process of cooking mung beans, starch is heated to absorb water and gelatinize. With the rupture of mung bean skin, the gelatinized starch will dissolve into the soup. With the decrease of temperature, the water loss of surface starch paste leads to the decrease of the spacing between starch chains, which cross-links with each other to form a network structure and become a starch film. This is a normal phenomenon.
5. Eating grape seeds can resist cancer and aging? No evidence
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Rumor: There is a saying on the Internet that grape seeds are rich in antioxidant resveratrol, which is considered to be anti-cancer and anti-aging.
Editor Zhu Fenglan proofreads Cece.