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Lemon Juice's effect on apples
Ask an Expert Topic Forum: Grades 6-8: Life, Earth, and Social Sciences
Lemon Juice's effect on apples Lemon Juice's effect on apples Hi, I have a science fair project and my topic is "The effect of lemon juice, orange juice, and salt water on the freshness of apples. I read online that lemon juice can help preserve apples, but I don't get that. So my question is "What is in lemon juice that helps apples stay fresh"? I would look it up online, but I am required to ask an expert as one of my resources. If you can include a little background on your expertise, that… Read more
Lemon Juice as Preserver
Ask an Expert Topic Forum: Grades 9-12: Life, Earth, and Social Sciences
Lemon Juice as Preserver Lemon Juice as Preserver I am doing an experiment with lemon juice and apples to see how good the lemon juice will act as a preserver for the apple. I am confused about why the citric acid and sulfur dioxide acts as a preserver. Please help to explain simple chemical reactions to me! Thanks Re: Lemon Juice as Preserver Hi, Both citric acid and sulfur dioxide are reducing agents. That means they they are preservatives because they react with oxygen in the air more… Read more
effect of lemon juice on plant growth
Ask an Expert Topic Forum: Grades K-5: Life, Earth, and Social Sciences
effect of lemon juice on plant growth effect of lemon juice on plant growth My daughter who is in grade 5 is doing her project " Effects of Different Liquids on Plant Growth" She used water, orange soda, liquid coffee and Lemon juice to see the effects on the growth of plants( same ). Now, the plant that she fed lemon juice every day had the negative impact- yellow leaves, leaves drooping and falling off and of course not growing. Her and I tried to research Why lemon juice does it but we… Read more
oxidation of Apples
Ask an Expert Topic Forum: Physical Science
oxidation of Apples oxidation of Apples In my experment of oxidation the apples, i found that oranges did not stop the oxidation process when appleid to the apple. Why is that? I thought oranges had a lot of vitamin C. Is it the acid levels or sugar content? Please help. -Lemons and limes worked the best. They are more sour. Does this have some thing to do with? from, pete Re: Oxidation of Apples Hi pete! You might try supplying "effect of acid levels on… Read more
Salt water and apple browning
Ask an Expert Topic Forum: Grades 6-8: Life, Earth, and Social Sciences
Salt water and apple browning Salt water and apple browning I did my science experiment on apple browning. I thought that lemon juice would be the best liquid to keep sliced apples from turning brown, but salt water actually worked the best - the apples didn't turn brown at all. Do you have an explanation why salt water, which isn't acidic, would stop apple browning better than lemon juice, which has a much lower pH? Thanks for your help. Re: Salt water and apple browning Hi! The reason… Read more
Apple Dehydration
Ask an Expert Topic Forum: Physical Science
Apple Dehydration Apple Dehydration I need help please!! :( I don't know how to measure the dehydration of apples for the project that i am busy with. The apples are in three different liquids: water, salt water and lemon juice. Any help or advice right now would be more than appreciated. Thank you! :lol: Hi, Some ways you could measure the dehydration of apples is to weigh them before and after you dehydrated them. Also you could time how long it takes each apple to dehydrate. Here's… Read more
Effect of Antioxidants on the Browning of apples
Ask an Expert Topic Forum: Grades 9-12: Life, Earth, and Social Sciences
Effect of Antioxidants on the Browning of apples Effect of Antioxidants on the Browning of apples Hi (: , I want to do a science fair project on the effect of antioxidants in lemon juice, pomegranite juice, blackberry juice, and acai berry juice on the browning of apples. Is this an accurate way to test how antioxidants work in humans? Also, I'm worried that fruits like the pomegranite will make the apple slices red and I will not be able to see the brown. Is there a better way to test… Read more
Preventing oxidation of an apple
Ask an Expert Topic Forum: Grades K-5: Life, Earth, and Social Sciences
Preventing oxidation of an apple Preventing oxidation of an apple My daughter is doing a project to see if the ph level of a liquid has anything to do with its ability to prevent/slow down an appe from browning. we used vinegar, lemon juice, saltwater and orange juice. Although vinegar has a the same ph as lemon and has a lower ph than salt water an orange juice, the appe treated with vinegar started to oxidize first...her hypothess is totally unsupported based on these findings... Why is… Read more
oxidation of apples
Ask an Expert Topic Forum: Physical Science
oxidation of apples oxidation of apples does the sweetness of the apple make the apple turn brown more quickly? :?: :? Hi Pete, That sounds like a very interesting project. I do not know if sweetness will affect the browing an apple. Could you please explain sweetness a little more- threre are many types of sweets. I did a google search on apple browning and found http://www.ars.usda.gov/is/kids/mailbag/mushyapple/applemushanswer.htm . It talks about what causes the apples to… Read more
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