Food becomes spoiled because microorganisms start living in the food. These microorganisms can include different types of fungus , such as mold and yeast, and bacteria. They can cause food to decay and develop unpleasant odors, tastes, and textures.
Sometimes food can even look perfectly good to eat, but can harbor pathogenic microorganisms that can cause illness and are hard to detect. Examples of pathogenic microorganisms include Salmonella and some types of E. In this cooking and food science project, you will investigate which types of food wrapping keep sliced apples the freshest in the refrigerator: aluminum foil, wax paper, plastic wrap, or plastic sealable bags.
Throwing away food is a waste of money. Save your family money by investigating how to keep your food fresh longer. You can do further research by visiting the following websites, which give information about apple oxidation and preservation:.
Proceeds from the affiliate programs help support Science Buddies, a c 3 public charity, and keep our resources free for everyone. Our top priority is student learning. If you have any comments positive or negative related to purchases you've made for science projects from recommendations on our site, please let us know. Write to us at scibuddy sciencebuddies. Figure 1. Cut all of the four apples into quarters similar to this one. Note : Only one quarter from each apple will have the stem, unless the stem is also cut into pieces.
Try one of our science activities for quick, anytime science explorations. The perfect thing to liven up a rainy day, school vacation, or moment of boredom.
Menu Science Projects. Project Guides. View Site Map. Science Projects. Grade Levels. Physical Science. Earth and Environmental Science. Behavioral and Social Science. Yuck, What Happened to My Apple? How Food Wrappings Affect Spoilage. An adult volunteer may be needed for cutting the apples.
Because of food safety concerns, do not taste or eat any of the apples used in this experiment. Share your story with Science Buddies! Yes, I Did This Project! Please log in or create a free account to let us know how things went. Science Buddies Staff. Accessed 13 Nov. Introduction Ever cut an apple into pieces and let some pieces sit out for a while? Apple Spoilage Wrappings: Time-lapse video of an apple spoiling. Watch this time-lapse video that shows two apple halves left out in a room over six days.
Bibliography You can do further research by visiting the following websites, which give information about apple oxidation and preservation: Helmenstine, Anne Marie.
Dec 3, Retrieved March 3, Feb 1, Why Do Apples Turn Brown? Science ABC. For more advanced information on apple oxidation, visit the following website: McLandsborough, L. One can also use orange juice, pineapple juice or apple juice to prevent browning. Other suggestions are Sprite or similar lemon-lime sodas, ginger ale, salted water, cinnamon, water and crushed vitamin C tablets, even dry white wine or flat Champagne!
There is also a commercial product called Fruit Fresh, but like everything mentioned so far is has a distinct effect on the taste and the flavor of the sliced fruit. Another alternative is to invest in a shrink wrap machine. Whilst effective this can be a costly investment and it constantly requires purchasing more shrink wrap.
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My eight-year-olds have lost their front teeth and my five-year-old prefers them sliced. I save money by forgoing pre-packaged slices and avoid hassle by not tossing them in lemon juice to prevent discoloration.
Here's how to do it:. Sherry Rujikarn. Hold the apple firmly in its original shape, pressing all the cut sides together, and transfer to a sheet of plastic cling wrap. This content is created and maintained by a third party, and imported onto this page to help users provide their email addresses.
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