140 likes | 431 Views
NCW 2014 The Sweet Side of Chemistry! Candy. Your Name Your Affiliation Location or type of presentation Date of presentation. What is candy? and What does it have to do with chemistry?.
E N D
American Chemical Society NCW 2014 The Sweet Side of Chemistry!Candy Your Name Your Affiliation Location or type of presentation Date of presentation
Candy: a confection made with sugar (or other sweeteners) and often flavorings and fillings. Chemistry: The study of the properties of matter and the changes that can occur in matter. sucrose American Chemical Society
The Physical Properties of Candy Making Flavor characteristics Molecular Structure Melting point American Chemical Society
Types of Molecular Structure in Candy Crystalline Solid: example-chocolate (crystalline cocoa butter) Amorphous Solid: example-hard candy (sucrose solution) Soft Polymeric Solid: example-Gummy Bears or Jello (gelatin gel) American Chemical Society
What’s the difference between eating hard candy and eating glass? vs. American Chemical Society
The Importance of Temperature American Chemical Society
The Chemical Properties of Candy • Flammability • Caramelization • Color change • Gas production American Chemical Society
Sugar Free Candy Sugar Alcohols, such as isomalt High-intensity Sweeteners such as sucralose. American Chemical Society
History Ancient candy was based on Honey Sugar cane agriculture started in India in 6th century BCE Candy only became widely available after the Industrial Revolution (1830s) American Chemical Society
Culture Source: U.S. Department of commerce American Chemical Society
Economics Per Capita Retail Candy Sales Source: US Department of Commerce 311D Confectionery Report American Chemical Society
Health and Fitness Positive Effects • Peppermint and mint candies can soothe upset stomachs • Dark chocolate can help reduce risk of heart disease • Mint-flavored gum can increase short-term memory • One study suggested candy consumers lived longer than non-consumers Negative Effects • Cavities • Obesity • Choking • Diabetes American Chemical Society
References: • Celebrating Chemistry, NCW 2014 edition: "The Sweet Side of Chemistry—Candy”, American Chemical Society, Washington D.C. • National Confectioners Association, http://www.candyusa.com/, Washington, DC 20007 • The Science of Cooking, Candy, Exploratorium, Pier 15, San Francisco CA 94111, https://www.exploratorium.edu/cooking/candy/sugar.html • McGee, Harold, On Food and Cooking, Simon and Schuster, 2004