ECH 1Y Lecture Notes - Lecture 4: Coffea, Chromosome

• School: UC-Davis
• Department: Engineering Chemical
• Course: ECH 1Y
• Professor: W. Ristenpart and T. Kuhl

Document Summary

Oct 8 ech 1 our raw materials: more about green coffee. Guatemala acatenengo gesha (2004 this coffee won global coffee competition, so they became famous) Above are the three types of coffee used in the course. Arabica has double the number of chromosome at 44 than robusta at 22. Most common varietals are typica and bourbon. Goal=drip moisture content of coffee beans (seeds) to lower or equal to 12. 5% More water=less coffee (coffee sold by mass) Slow even drying rate yield better cup quality. Pulped natural: wet: reception---flotation cleaning---pulping---fermentation---washing---drying, moisture content 50% to 65% Typically dry for around 28 days, 4 weeks. Rotate cherries can not pile too high.