FOOD 4070 Lecture Notes - Lecture 1: Vapor Barrier, Microorganism, Caprolactone

• School: University of Guelph
• Department: Food Science
• Course: FOOD 4070
• Professor: Loong Tak Lim

Document Summary

Biobased polymer: to create pet: sugarcane starch, convert ethanol and polymerize. Poly( -caprolactone: part plant based, part chemical based. Flexible: considerable shape change after filling, internal = external pressure. Semi-rigid: slight shape change after filling, deformable by force. Rigid: does not change shape after filling, does not deform unless excessive force is applied. Evoh (inside): oxygen barrier, sensitive to moisture. Why packaging is important: (cid:498)creeping(cid:499) by the polymer over time. Polymer (pet) relaxes over time and the twist disappears. More efficient in saving food: negative correlation, less use of packaging = more waste, more use of packaging = less waste. Processed to stabilize: being able to produce and sell enough. Waste utilization/reduction: don"t need to hunt for food, ex chicken feathers for feather, use other pars elsewhere filled materials. Physical environment: physical damages that occur during transportation and handling. Ambient environment: o2, h2o, light, temperature, microorganism, macroorganism, contaminant. Will determine which product the customer will buy.