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Bagged Salad Shouldn’t Exist
AI摘要
本视频探究了袋装沙拉为何能长时间保鲜背后的惊人科学,介绍了食品保鲜技术和气调包装。学习者将掌握食品科学、包装和保质期相关词汇。
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CEFR 等级
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字幕 (83 片段)
下载Picture this: Your fridge is empty, so you find yourself down at the grocery store, trying to make healthy choices.
You grab a bag of mixed greens from the produce aisle, and haul it home.
Then, if you’re anything like me, it ends up shoved to the back of the fridge until all the really good stuff you bought is gone.
So you rediscover it weeks later only to find that your precious greens are … surprisingly still good enough for a salad!
Bagged salads can stay fresh in your fridge for much longer than seems possible.
And you might not think I’ll be able to talk about a salad bag for the entire length of this video, but you bet your brassicas I’m gonna!
Because that unassuming bag shoved to the back of your fridge is a miracle of industrial farming, atmospheric control, and polymer chemistry.
[♪ INTRO]
This story doesn’t start in the salad bag.
It starts in the refrigerator itself. In many parts of the world, refrigerators are a commonplace kitchen appliance.
But it wasn’t always that way. The home refrigeration revolution swept across the US in the 1940s, and caught on in other parts of the world in the decades to follow.
And while this was amazing for the makers of corny fridge magnets, it was also great for households.
Once upon a time, a home cook would need to trek to the grocer pretty much every day for fresh ingredients!
But with a fridge in the kitchen, grocery shopping was reduced to a once-a-week chore.
And with that chill revolution, even delicate veggies like lettuce could be shipped from farm to fridge and live to tell the kale – tale.
Americans across the country started eating more salad at dinner, and the execs at Big Lettuce were eager to cash in.
It was simple enough to ship an entire head of lettuce to grocery stores, but pre-chopped leaves were a different story.
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核心词汇 (13)
你是一个好人。(You are a good person.)
这家工厂每年生产数百万件玩具。
碳是存在于所有生物中的化学元素。
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