Purestock/Purestock/Getty Images. Hydroxycitric acid, which comes from the Garcinia cambogia fruit, is often sold as a weight-loss supplement. The fruit itself is used as a condiment in Southeast Asian dishes, such as curries.In purified supplement form, hydroxycitric acid may cause some side effects, so check with your doctor before adding it to your daily regimen.he fruit itself is used as a condiment in Southeast Asian dishes, such as curries. In purified supplement form, hydroxycitric acid may cause some side effects, so check with your doctor before adding it to your daily regimen.
Why is liquid nitrogen used to fast freeze food instead of liquid oxygen? There are two reasons. First, liquid nitrogen is colder than liquid oxygen and thus more effective at flash freezing.
Q: Is there any advantage to using nitrogen instead of compressed air in tires? Will I notice improved fuel economy or a smoother ride? Will my tires last longer? A: Sort of. From the top: Air is 78 percent nitrogen, just under 21 percent oxygen, and the rest is water vapor, CO2 and small concentrations of noble gases such as neon and argon.