QA：吃冷凍食品有什麼影響？_風聞

【來源龍騰網】

評論原創翻譯：

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.

冷凍食品的營養成分比新鮮食品少——科學已經解釋過了，這是關於冷凍食品的一個謠言。研究發現，新鮮水果和蔬菜通常比罐裝或冷凍產品更快地失去營養，隨着時間的推移，新鮮農產品不冷藏的話會失去部分維生素，而冷凍農產品則會很好地保留這些物質，在冷凍農產品中測量到的維生素濃度通常與冷藏前在相應的新鮮農產品中觀察到的濃度相似。

冷凍會殺死所有細菌——是的，但也不是，因為某些細菌可能會在冷凍温度下死亡，但這並不是全部。很多細菌都可以在低温下存活。冷凍至零華氏度 (約-17.8攝氏度) 食物中仍然存在的一些微生物：細菌、酵母菌和黴菌會失活，其中大部分會進入休眠狀態並在冷凍食品或液體中存活。一旦解凍，這些微生物就會再次活躍起來，在適當的條件下繁殖到可能導致食源性疾病的地步。給食物加熱，會殺死大部分微生物，但是會使部分微生物從冷凍狀態轉為活躍狀態，即“解凍”。（解凍通常被認為是冷凍過程的簡單逆轉）。

冷凍食品通常經過加工——大多數冷凍食品本身是加工食品，如冷凍比薩、加工肉類、冷凍油炸食品。但你不能只冷凍加工食品，還可以冷凍一些健康的蔬菜和水果。例如冷凍豌豆、胡蘿蔔、新鮮肉類、水果、漿果等。你最好還是檢查一些加工食品質量，閲讀一下食品背後的成分表，以及是否有防腐劑和添加劑。

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.

冷凍食品在我們生活中相當受歡迎，因為所有人都享受了其便利，所以我們傾向於更頻繁地去選擇購買冷凍食品，這點是我們必須承認的。然而，重要的是不要去養成這種習慣，因為隨着時間的推移，它肯定會帶來一些併發症。我們都應該明白，有時候，在我們做出生活方式的選擇之前，我們需要知道它會對我們的健康產生什麼影響，以及我們的選擇是否真的值得。

糖尿病：冷凍食品中含有過量新鮮澱粉。這裏所討論的澱粉增加了食物的味道和質地，澱粉是由葡萄糖鏈構成的多糖物質，我們的身體在消化食品後將這種多糖成分轉化為單糖，過量的糖會增加患糖尿病的風險，同時也會對身體組織造成損害。如果你的家中有類似冷凍食品，您應該儘量避免食用它們。

心臟病：與冷凍加工食品相關的另一個健康風險是心臟病。包裝食品中含有的反式脂肪會增加您患心臟病的風險，也會導致動脈阻塞。

過多的卡路里：冷凍食品的脂肪含量很高。與普通碳水化合物或蛋白質相比，脂肪所含的卡路里是前者兩倍；高含量的卡路里意味着高熱量。例如，冷凍雞肉餡餅可能含有近 600 卡路里的熱量，其中一半以上來自脂肪。雖然冷凍食品在市場上被宣傳為健康和營養豐富，但事實是它們對你的身體有害。

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.

冷凍不會使食物變得健康或不健康——它實際上取決於被冷凍的食物的營養成分。冷凍的水果和蔬菜可以和新鮮水果蔬菜一樣營養豐富，與冷凍食品，如披薩、零食和主菜相比，它們的營養含量會保持的更好，如果你的食物在冷凍前是有營養的，那麼解凍後它仍然是有營養的，普通的冷凍水果、蔬菜、肉類、雞肉和魚不會有問題，你甚至可以冷凍所有的穀物。

在準備和供應快餐時，沒有什麼比冷凍食品更方便的了，它們可以放在冰箱裏，保存很長時間，而且很容易準備，如果你在打折的時候購買，那儲存冷凍食品也是一個省錢的好方法。你也可以冷凍新鮮易腐爛的食物以保持更長時間，這是減少浪費的好方法。

但許多人仍然想知道，冷凍食品是否可以成為健康飲食的一部分。一般來説，冷凍食品保留維生素和礦物質，碳水化合物、蛋白質或脂肪含量沒有變化，在某些情況下，冷凍食品比新鮮食品含有更多的維生素和礦物質，因為新鮮食品隨着時間的推移會失去維生素和礦物質，而冷凍食品可以保存營養。