Vitafresh Powdered Fruit Juice Change
Purpose: To investigate how the concentration of vitamin C in Vitafresh powdered fruit juice changes over time once made into a solution.
Justification:
Vitafresh claims to contain “more vitamin C... than orange juice,”[footnoteRef:0] which, with the upcoming winter season, would make it a suitable alternative to orange juice for combating sickness. The average daily requirement of vitamin C in an adult is 65-90mg per day,[footnoteRef:1] so it is important to consider the quantity of Vitamin C in 100 ml of Vitafresh (one serving) to see whether it would be enough to meet these requirements during the cold season. As it is highly unlikely that a person would consume 1 litre in one sitting, it is important that the Vitafresh solution maintains …show more content…
As starch indicator is not reacting, this will have no effect on our final result given that this amount was used during every trial.
Our vitafresh sample was made using a packet containing 76.2g of the sample, which we halved, and then used a 500ml volumetric flask to create 1 litre of our solution. We weighed the amount of powder using a 2 d.p. scale, and then poured 100 ml samples into 8 different labeled plastic cups for each day of titration, to stop the solution from settling. Remaining solution was left in the volumetric flask, unsealed to make sure it was still under the same conditions as the prepared samples, and was utelised as needed when we ran out of solution in our …show more content…
This means that as the time since the Vitafresh solution was made up increases, the concentration of vitamin C decreases. The aim of our experiment was to determine if vitamin C concentration in Vitafresh was sufficient enough for it to be a viable alternative to fresh orange juice over 7 days. Our experiment found that the quantity of Vitamin C in 100ml of juice is only 11.2mg by day 7, and after day 3, drops below half of our daily vitamin c needs. Therefore, we have determined that Vitafresh is a suitable alternative to fresh orange juice if consumed within 2 days after the solution is made up, as this would ensure it had a vitamin C concentration of more than 38.6mg per 100
Justification:
Vitafresh claims to contain “more vitamin C... than orange juice,”[footnoteRef:0] which, with the upcoming winter season, would make it a suitable alternative to orange juice for combating sickness. The average daily requirement of vitamin C in an adult is 65-90mg per day,[footnoteRef:1] so it is important to consider the quantity of Vitamin C in 100 ml of Vitafresh (one serving) to see whether it would be enough to meet these requirements during the cold season. As it is highly unlikely that a person would consume 1 litre in one sitting, it is important that the Vitafresh solution maintains …show more content…
As starch indicator is not reacting, this will have no effect on our final result given that this amount was used during every trial.
Our vitafresh sample was made using a packet containing 76.2g of the sample, which we halved, and then used a 500ml volumetric flask to create 1 litre of our solution. We weighed the amount of powder using a 2 d.p. scale, and then poured 100 ml samples into 8 different labeled plastic cups for each day of titration, to stop the solution from settling. Remaining solution was left in the volumetric flask, unsealed to make sure it was still under the same conditions as the prepared samples, and was utelised as needed when we ran out of solution in our …show more content…
This means that as the time since the Vitafresh solution was made up increases, the concentration of vitamin C decreases. The aim of our experiment was to determine if vitamin C concentration in Vitafresh was sufficient enough for it to be a viable alternative to fresh orange juice over 7 days. Our experiment found that the quantity of Vitamin C in 100ml of juice is only 11.2mg by day 7, and after day 3, drops below half of our daily vitamin c needs. Therefore, we have determined that Vitafresh is a suitable alternative to fresh orange juice if consumed within 2 days after the solution is made up, as this would ensure it had a vitamin C concentration of more than 38.6mg per 100