In a very popular corporate workshop I teach I'm always singing the praises of lemon and water. The number one question someone ALWAYS asks me is "Can I just buy the lemon juice in the plastic bottle"? My answer is always NO. And let me tell you why....
Two words: Sulfur Dioxide (also known as sulfites)
This chemical is common in our food supply and used as a preservative to prevent the discolouration of fruit (you've all seen the bright orange apricots), as an anti-microbial for wine (you've likely seen the phrase "contains sulfites"), in frozen pizza dough and pie crust, and in the case of lemon juice, to prevent it from rotting.
I personally avoid buying wine when it states "contains sulfites". Pretty much all wine contains sulfites to a degree, but I avoid wine brands that have added sulfites. Now before I continue, I don't want you to think that sulfites are the most evil food additive on planet earth, because that's not the case. However, I do want you to think about eating more "real food" and that means food that doesn't contain chemical additives to maintain freshness.
This is a great food rule to live by: Buy food that can actually rot!
Here's some info for you on sulfur dioxide:
It is used to decolourize paper and cloth, as a bleaching agent and to treat chlorinated wastewater prior to release.
Sulfur dioxide blocks nerve signals from the pulmonary stretch receptor, which is precisely why it mimics asthma-like symptoms. To make matters worse, it also inhibits your lungs from over-inflating, which is why you feel like you can't take full deep breaths when exposed to sulfites.
Sulfur dioxide emissions are a precursor to acid rain which kills fish and stimulates the overgrowth of algae.
It is the poisonous gas emitted by volcanic eruptions.
Coal and petroleum burn off often contain sulfur compounds.
These types of sulfur compounds are harmful to the environment, plant and animal life.
Now keep in mind I'm not a chemist, but it wouldn't be too far off to assume the vitamin C and other minerals in the lemon juice are not as potent as they otherwise would be. Furthermore, the LAST thing you want to do is chug back lemon juice that's been sitting on a store shelf in a plastic bottle potentially leaching phthlates (plastisicers) and BPA (bisphenol-A) in to the juice.
What kind of nutrition are you getting from a fruit that's likely been squeezed 6 months or even 2 years earlier and packaged for sale and then potentially sit in your fridge for another 6 months to a year.
Just buy a bag of lemons and squeeze the juice every morning. If you don't like lemons, then 1 capful of apple cider vinegar does the trick too! The beautifying, detoxifying benefits of endless!