注意！為什么不建議你喝隔夜飲料？

春節假期接近尾聲，回家過年的你是否在親友團聚的餐桌上喝了不少飲料？

“隔夜飲料”，一直是不少網友關心的話題。

Beverages are a staple of festive gatherings with family and friends. Whether it's safe to drink leftover beverages from the night before has long been a topic of discussion online.

“千萬不要喝隔夜飲料”話題下，不少網友現身說法：

當然，也有網友發出疑問：

所以，隔夜飲料究竟能不能喝？開蓋后的飲料，飲用最佳時間是多久呢？

答案是：不止隔夜飲料，開封后超過12小時的飲料，都不建議繼續飲用！

Is it safe to drink beverages left out overnight? And how long do opened drinks actually last? The rule of thumb is that once a beverage has been opened, it's best to consume it within 12 hours, overnight or not.

飲料的瓶蓋一旦被擰開，就意味著這些口感各異的液體所處的無菌環境被破壞了。特別是室溫存放，更容易導致細菌繁殖。

中國農業大學食品科學與營養工程學院副教授吳曉蒙建議：開瓶后沒有喝完的飲料，最好是密封冷藏保存，而且要盡快喝完！一般情況下，飲用時間不得超過12小時！

此外，相比倒出來喝飲料，對嘴喝飲料的微生物污染概率更高！不同飲用方式給飲料帶來的微生物污染風險也不同。

試驗測試發現，直接對嘴喝的飲料，51%的樣本被檢出瓶中剩余飲料里有微生物生長，主要是口腔微生物群（比如鏈球菌和葡萄球菌）；而倒出來喝的飲料，只有18%的樣本被檢出剩余飲料中有微生物生長，主要是環境微生物（比如霉菌）。

此外，試驗還發現用嘴接觸瓶口的方式造成的飲料被污染程度也有差別。相比于用嘴含住整個瓶口，只用嘴接觸一半瓶口的喝法，污染到瓶里的細菌相對較少。

The experiment also showed that the way a person drinks from a bottle can influence contamination levels. Drinking with only the lips touching half of the bottle opening introduced fewer bacteria into the liquid compared to drinking with the mouth wrapped fully around the rim.

這時候，有好奇網友發問：那我不對嘴喝，倒一半在杯子里，剩一半放冰箱下次喝呢？

吳曉蒙副教授分析說，飲料在包裝未開封前屬于密封狀態，開蓋和飲用后很容易接觸到嘴里或者空氣中的細菌、真菌等微生物。在后續存放過程中，只要有合適的外界條件（溫度和濕度）和適當的養分，這些微生物就會迅速繁殖！

Expert explained that beverages are sealed and remain sterile until opened. Once the package is opened and consumed, the drink is easily exposed to bacteria, fungi, and other microorganisms from the mouth or surrounding air. If conditions such as temperature, humidity, and nutrient levels are favorable, these microbes can multiply rapidly during storage.

雖然預包裝飲品開蓋后，在室溫下放置2個小時后再飲用，不會引起太大的問題，但并不建議大家這樣做，如果大量飲用，可能會帶來危害。一些鮮榨果汁、現做奶茶類飲料以及蛋白質含量較高的飲料，建議要一次性喝完。

節儉是美德，但開封后的飲料真的不適合留著慢慢喝。

如果一定要喝，記住以下3點：

① 盡量將飲料倒入干凈的杯子中飲用，尤其大瓶飲料，不要對瓶吹。

Try to pour the beverage into a clean cup for drinking, especially with large bottles—avoid drinking directly from them.

② 對嘴喝過的飲料，最好在1~2小時內喝完，尤其是現做的奶茶，更要1小時以內，原料越復雜越要盡快喝完。

For beverages that have been sipped directly from the container, it is best to finish them within 1–2 hours, especially freshly made milk tea, which should be consumed within an hour. The more complex the ingredients, the quicker it should be finished.

③ 實在沒法兒立即喝完的飲料，密封冷藏好，但冷藏時間最好不要超過12小時（畢竟冷藏只能減緩微生物生長，不能完全阻止）。

If you really can't finish it immediately, seal it tightly and refrigerate it, but you'd better not keep it refrigerated for more than 12 hours (since refrigeration only slows microbial growth and does not completely prevent it).

你家的冰箱里還有沒有喝剩的飲料？如果有，一定要抓緊處理掉哦。

來源：外研社UNIPUS

跟著China Daily

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