Carbohydrate Identification Lab Results Conclusion Results Which of

Carbohydrate Identification Lab Results & Conclusion

Results: Which of the solutions reacted to Benedict’s Solution? • • Monosaccharide-Known Honey Apple Juice Milk (in some classes)

Results: Which of the solutions reacted to Iodine Solution? • • Polysaccharides Oat Water Rice Water Milk (a little bit)

Results: Which of the solutions did not react at all? • Disaccharides • Sugar Water

Conclusion: (a) Mono, Di or Polysaccharides? • Reaction with Benedict’s Monosaccharides Present • Benedict’s only reacts with Monosaccharides • Honey, Apple Juice and Milk contains monosaccharides • You saw a orange-yellow-brown color change, resulting from Benedict’s solution!

Conclusion: (b) Structure of Molecules & Benedict‘s • Reacted w/Benedict’s Monosaccharide • Monosaccharide = 1 sugar • Structure of Honey, Apple Juice & Milk: – The carbohydrate was made of individual, single sugar units. – Most likely glucose or fructose.

Conclusion: (c) Mono, Di, or Polysaccharides? • Reaction with Iodine Polysaccharides Present • Iodine only reacts with Polysaccharides • Oat Water, Rice Water & Milk contains polysaccharides • You saw a blue-black color change, resulting from Iodine reaction!

Conclusion: (d) Structure of Molecules & Iodine • Reacted w/Iodine Polysaccharides • Polysaccharide = Many Sugars • Structure of Oat Water, Rice Water & Milk: – The carbohydrates were large molecules, made of repeating sugar units. – Most likely starchy.

Conclusion: (e) Mono, Di, Polysaccharides? • No Reaction Disaccharide • No Color Change Ever Disaccharide • Sugar Water must contain disaccharides

Conclusion: (f) Structure of Molecules & Nada • No Reaction Disaccharides • Disaccharide = 2 or Double Sugar • Structure of Sugar Water: – Made of double sugar units – Most likely sucrose or sucralose

Conclusion: (g) Solutions & Long Energy • Oat Water & Rice Water: – Largest Carbohydrates – Most Bonds Most Energy over Long Period

Conclusion: (h) Solutions & Quick Energy • Honey & Apple Juice: – Small Carbohydrates – Few Bonds Little Energy over Short Period