HTM 2700 Lecture Notes - Lecture 9: Beta-Carotene, Phytol, Zucchini

• School: University of Guelph
• Department: Hospitality and Tourism Management
• Course: HTM 2700
• Professor: Alison Crerar

Document Summary

Week 3 lecture 9 friday, january 29, 2016. Fab pigments are water soluble cc pigments are fat soluble. Chemically there are 2 types: carotenes (orange to orange-red) (fyo have an idea of them) Beta-carotene (orange): 1 molecule converts to 2 molecules of vitamin a. Alpha-carotene (yellow-orange): 1 molecule converts to 1 molecule of vitamin a. Lycopene (orange-red): contains 2 extra double bonds; found in tomatoes, watermelon, pink grapefruit; cannot be converted into vitamin a; proven to be good for eye sight: xanthophylls (yellow) (fyo have an idea of them) Acid and heat: slight fading in colour (ex. Beta carotene changes from orange-red to paler colour) Examples: asparagus, broccoli, green grapes, green pepper, zucchini. Chlorophyll (cid:858)a(cid:859): blue-green; has a ch3 bond. Pheo is fighting in the army and is kicking some ass (pheophytin; army=olive green, ass=acid) Due to methionine (an amino acid) which is converted by the body to methyl mercaptan (odour produced)