1. Are the objective and introduction written in an engaging way? Yes No     If 'No' please explain. characters left 2. Is the difficulty level accurate? Yes No     If 'No' please explain. characters left 3. Were the materials easily obtained? Yes No     If 'No' please explain. characters left 4. Was the procedure clear? Yes No      If 'No' please explain. characters left 5. Were all safety measures included? Yes No      If 'No' please explain. characters left 6. Did you obtain clear, unambiguous results? Yes No     If 'No' please explain. characters left 7. How much time did you spend on the project? Choose One... A day or less Several days About one week A couple weeks Several weeks to months 8. How much did the project cost? Choose One... Less than $20 $20 - $50 $50 - $100 $100 - $150 $150+ Optional:  Do you have any suggestions to improve this project? characters left Optional:  Attach a picture of your project (JPG, JPEG, GIF, PNG only) Optional:  Caption for picture characters left Thank you for your feedback! * Note: This is an abbreviated project idea, without notes to start your background research or a procedure for how to do the experiment. You can identify abbreviated project ideas by the asterisk at the end of the title. If you want a project idea with full instructions, please pick one without an asterisk. Abstract As you know, vegetables not only taste good, but they are good for you. Many vegetables are a great source of vitamin C. Vitamin C is a water-soluble antioxidant that plays an important role in protecting the body from infection and disease. Humans do not make vitamin C on their own, so we must get it from dietary sources. So what is the best way to prepare your vegetables so that you get the most vitamin C out of them? In this cooking and food science fair project, investigate which cooking method—boiling or steaming—results in higher vitamin C content in potatoes. To quantify the amount of vitamin C, you'll need to do some titrating. For information on how to titrate, consult the references below in the Bibliography, as well as the Experimental Procedure of the Science Buddies Which Orange Juice Has the Most Vitamin C science fair project. Bibliography The following websites describe how to titrate vitamin C from vegetables. The third website details how another student went about determining the vitamin C levels in cooked potatoes, and her results. University of Canterbury. (n.d.). Determination of Vitamin C by Redox Titration with Iodine. Science Outreach. Retrieved October 7, 2008, from http://www.outreach.canterbury.ac.nz/chemistry/vitamin_C_iodine.shtml Helmenstine, A. (n.d.). Vitamin C Determination by Iodine Titration. Retrieved October 7, 2008, from http://chemistry.about.com/od/demonstrationsexperiments/ss/vitctitration.htm Colby, D. The Effect of Cooking Methods on Vitamin C in Potatoes. Retrieved October 7, 2008, from http://www.selah.k12.wa.us/SOAR/SciProj2005/ColbyD.html Wikipedia Contributors. (2008). Vitamin C. Wikipedia: The Free Encyclopedia. Retrieved October 7, 2008, from http://en.wikipedia.org/w/index.php?title=Vitamin_C&oldid=243741812 Variations For more science project ideas in this area of science, see Cooking & Food Science Project Ideas. Last edit date: 2008-10-09 12:00:00

I Did This Project! Tell us about your experience with this science project. What was the most important thing you learned? characters left What problems did you encounter? (Enter "none" if you had none.) characters left Can you suggest any improvements or ideas? (Enter "no" if you have none.) characters left How do you rate this project? Poor OK Good Very Good Excellent Optional:  Attach a picture of your project (JPG, JPEG, GIF, PNG only) Optional:  Caption for picture characters left Thank you for your feedback! Related Links Science Fair Project Guide Chemistry Safety Guide Project Summary Difficulty  8  –  9  Time required Average (about one week) Prerequisites None Material Availability Iodine-based chemicals are required. Ask your science teacher to help you obtain the right chemicals. Cost Average ($50 - $100) Safety Minor injury is possible. Adult supervision is recommended. When working with chemicals, always wear safety goggles, gloves, and aprons. If using acids, work in a vented hood. Exercise caution when using a hot plate and all chemicals. For more tips, consult the Science Buddies Chemistry Safety Guide. Share this Project Idea! Donate to Science Buddies Internet Safety Tips Get educated about online safety with help from Symantec. symantec.com/norton/familyresources Motorola Solutions Foundation sponsors Summer Science Camp Resource Summer Science Camp Resource

Career Focus

If you like this project, you might enjoy exploring related careers.

	Food Science Technician Good taste, texture, quality, and safety are all very important in the food industry. Food science technicians test and catalog the physical and chemical properties of food to help ensure these aspects.			Biochemist Growing, aging, digesting—all of these are examples of chemical processes performed by living organisms. Biochemists study how these types of chemical actions happen in cells and tissues, and monitor what effects new substances, like food additives and medicines, have on living organisms.
	Dietitian or Nutritionist Ever wondered who plans the school lunch, food for patients at a hospital, or the meals for athletes at the Olympics? The answer is dietitians and nutritionists! A dietitian or nutritionist's job is to supervise the planning and preparation of meals to ensure that people—like students, patients, and athletes—are getting the right foods to make them as healthy and as strong as possible. Some dietitians and nutritionists also work to educate people about good food choices so they can cook and eat their own healthy meals.

Join Science Buddies Become a Science Buddies member! It's free! As a member you will be the first to receive our new and innovative project ideas, news about upcoming science competitions, science fair tips, and information on other science related initiatives. Support Science Buddies If this website has helped you, won't you consider a small gift so we may continue developing resources to help teachers and students?