QA：吃冷冻食品有什么影响？_风闻

【来源龙腾网】

评论原创翻译：

Akshay Chopra

Frozen foods have less nutrients than fresh food–as we have already cleared that this is a major myth regarding frozen foods. It was seen that fresh fruits and vegetables usually lose nutrients more rapidly than canned or frozen products. Fresh produce loses vitamins upon refrigerated storage over time, while their frozen counterparts retain these nutrients equally so or better. The concentrations measured in frozen produce generally resembled those observed in the corresponding fresh produce prior to refrigerated storage.

Freezing will kill all the bacteria – yes and no, as certain bacteria may die at a freezing temperature, but not all. Some bacteria can survive freezing temperatures. Freezing to 0degF (-17.8deg C) inactivates any microbes, bacteria, yeasts and moulds present in food, most of them enter a dormant state and stay alive in the frozen food or liquid.

Once thawed, however, these microbes can again become active, multiplying under the right conditions to levels that can lead to foodborne illness. It’s the heating of the food, which will destroy most of them. (Thawing is the process of taking a frozen product from frozen to a temperature (usually above 0degC) where there is no residual ice, i.e. “defrosting”. Thawing is often considered as simply the reversal of the freezing process.)

Frozen foods are processed foods – yes & no. Yes, if the frozen food itself is processed food like frozen pizzas, processed meats, frozen fried foods. But you don’t freeze only processed foods, but extremely healthy fruits and vegetables too. For e.g. frozen peas, carrots, fresh meats, fruits, berries etc. Another way to check the quality of processed foods is by reading the ingredient list behind it. The list should be minimal in terms of preservatives and additives.

冷冻食品的营养成分比新鲜食品少——科学已经解释过了，这是关于冷冻食品的一个谣言。研究发现，新鲜水果和蔬菜通常比罐装或冷冻产品更快地失去营养，随着时间的推移，新鲜农产品不冷藏的话会失去部分维生素，而冷冻农产品则会很好地保留这些物质，在冷冻农产品中测量到的维生素浓度通常与冷藏前在相应的新鲜农产品中观察到的浓度相似。

冷冻会杀死所有细菌——是的，但也不是，因为某些细菌可能会在冷冻温度下死亡，但这并不是全部。很多细菌都可以在低温下存活。冷冻至零华氏度 (约-17.8摄氏度) 食物中仍然存在的一些微生物：细菌、酵母菌和霉菌会失活，其中大部分会进入休眠状态并在冷冻食品或液体中存活。一旦解冻，这些微生物就会再次活跃起来，在适当的条件下繁殖到可能导致食源性疾病的地步。给食物加热，会杀死大部分微生物，但是会使部分微生物从冷冻状态转为活跃状态，即“解冻”。（解冻通常被认为是冷冻过程的简单逆转）。

冷冻食品通常经过加工——大多数冷冻食品本身是加工食品，如冷冻比萨、加工肉类、冷冻油炸食品。但你不能只冷冻加工食品，还可以冷冻一些健康的蔬菜和水果。例如冷冻豌豆、胡萝卜、新鲜肉类、水果、浆果等。你最好还是检查一些加工食品质量，阅读一下食品背后的成分表，以及是否有防腐剂和添加剂。

Lucas Brown

Frozen food has gained quite a popular status because there is no one who doesn’t enjoy convenience, so we tend to go for frozen food more often that we would like to admit. However, it is important to not make that a habit because over a due course of time, it sure comes with a lot of complications. Once in a while is something, we all understand, however before we made that a lifestyle choice, we need to be aware of what all implications it would have on our health and whether it’s really worth it.

Diabetes: In order to keep the frozen foods fresh starch is used. The starch that is in question here adds taste and texture to the food. Starch is a glucose chain, and our bodies convert this glucose to sugar before it is even digested. The excess sugar increases your risk of diabetes while also causing damage to your body tissues. If it runs in the family, you should try avoiding having frozen foods.Heart Diseases: Another health risk that is associated with frozen or processed food is heart disease. The trans fats that are present in packaged foods increase your risk of contracting heart disease and also contribute to clogged arteries.

Excessive calories: Frozen foods are very high in fat. Fat contains twice the number of calories compared to carbohydrates or protein; this often makes it high in calories. For instance, 1-cup serving of frozen chicken pot pie may contain nearly 600 calories, more than half of which come from fat. Although, frozen foods are marketed to be healthy and nutritious but the fact is they harmful for your body.

冷冻食品在我们生活中相当受欢迎，因为所有人都享受了其便利，所以我们倾向于更频繁地去选择购买冷冻食品，这点是我们必须承认的。然而，重要的是不要去养成这种习惯，因为随着时间的推移，它肯定会带来一些并发症。我们都应该明白，有时候，在我们做出生活方式的选择之前，我们需要知道它会对我们的健康产生什么影响，以及我们的选择是否真的值得。

糖尿病：冷冻食品中含有过量新鲜淀粉。这里所讨论的淀粉增加了食物的味道和质地，淀粉是由葡萄糖链构成的多糖物质，我们的身体在消化食品后将这种多糖成分转化为单糖，过量的糖会增加患糖尿病的风险，同时也会对身体组织造成损害。如果你的家中有类似冷冻食品，您应该尽量避免食用它们。

心脏病：与冷冻加工食品相关的另一个健康风险是心脏病。包装食品中含有的反式脂肪会增加您患心脏病的风险，也会导致动脉阻塞。

过多的卡路里：冷冻食品的脂肪含量很高。与普通碳水化合物或蛋白质相比，脂肪所含的卡路里是前者两倍；高含量的卡路里意味着高热量。例如，冷冻鸡肉馅饼可能含有近 600 卡路里的热量，其中一半以上来自脂肪。虽然冷冻食品在市场上被宣传为健康和营养丰富，但事实是它们对你的身体有害。

Naina Kalra

The act of freezing doesn’t make food healthy or unhealthy—it really depends upon the nutritional content of the food that gets frozen. Frozen fruits and vegetables can be just as nutrient-dense as their fresh counterparts, but frozen foods like pizzas, snacks, and entrees can be less nutrient-dense when compared to frozen fruits and vegetables.

If your food was nutritious before it was frozen, it will still be nutritious after it’s thawed. You can’t go wrong with plain, frozen fruits, vegetables, meats, chicken, and fish. You can even freeze whole grains.When it comes to preparing and serving a quick meal, nothing beats the convenience of frozen foods. They fit nicely in your freezer, keep for a long time, and they’re easy to prepare.Stocking up on frozen foods can also be a great way to save money if you buy them when they’re on sale. You can also freeze fresh perishable foods to keep them longer, which is a great way to cut down on waste. But many still wonder whether frozen foods can be a part of a healthy diet.Generally, frozen foods retain their vitamins and minerals and there is no change to the carbohydrate, protein or fat content. In some cases, frozen foods have more vitamins and minerals compared to fresh because fresh foods lose vitamins and minerals over time while freezing preserves nutrients.

冷冻不会使食物变得健康或不健康——它实际上取决于被冷冻的食物的营养成分。冷冻的水果和蔬菜可以和新鲜水果蔬菜一样营养丰富，与冷冻食品，如披萨、零食和主菜相比，它们的营养含量会保持的更好，如果你的食物在冷冻前是有营养的，那么解冻后它仍然是有营养的，普通的冷冻水果、蔬菜、肉类、鸡肉和鱼不会有问题，你甚至可以冷冻所有的谷物。

在准备和供应快餐时，没有什么比冷冻食品更方便的了，它们可以放在冰箱里，保存很长时间，而且很容易准备，如果你在打折的时候购买，那储存冷冻食品也是一个省钱的好方法。你也可以冷冻新鲜易腐烂的食物以保持更长时间，这是减少浪费的好方法。

但许多人仍然想知道，冷冻食品是否可以成为健康饮食的一部分。一般来说，冷冻食品保留维生素和矿物质，碳水化合物、蛋白质或脂肪含量没有变化，在某些情况下，冷冻食品比新鲜食品含有更多的维生素和矿物质，因为新鲜食品随着时间的推移会失去维生素和矿物质，而冷冻食品可以保存营养。