100%(1)1 out of 1 people found this document helpful
This preview shows page 10 - 12 out of 22 pages.
so labeling makes ppl think it’s somewhat better Video 10 - Shirriff mashed potatoes from a box labeled “Made from real potatoes” - has anti-oxidantsàsodium bisulphite, sodium sulphite, sodium acid pyrophosphate, BHT, BHA, citric acid - oxidants react w foodàbrowning of fruits & veggies; oxidation of fats (rancidity) - antioxidants prevent this - when cut an apple, the metal in knife promotes oxidation of chemicals in apple - want something that will trap the metal to prevent it from interacting w the food
àcitric acidacts as a chelating agent(aka. sequestrant) - traps/chelates the metal ion that would react w the food (causing browning) - mayonnaisehas calcium disodium EDTAwhich is a sequestrant- sodium bisulphite (Na2SO3)is an additive to prevent browning- some ppl are allergic to sulfite & 20 ppl died in US before danger was known - sulphites added to salad bars to prevent potato salad from browning - today, sulphites used in grapes to keep crunchiness; use in pre-cut fries - used as anti-microbial in wine to prevent it from going bad - in Canada, only 1 case from reaction to sulphiteàasthmatics most susceptible - the person prepared raisin bread & added dried raisins (preserved w sulphites) - BHA & BHTprevent rancidityto prevent oxidation of fat - added to cereals(to the packaging) to preserve freshness - free radicals promote fat oxidation - free radical takes the H in BHT & leaves behind a transformed BHT which is stable & prevents a free-radical chain reaction - ratsfed large amount BHTdevelop liver abnormality, but live 25% longer- diet high in BHT can make us live longeràaging process possibly due to oxidation process - potato chipsàsunflower oil, BHA, BHT Video 10 - white bread has calcium propionate(a preservative) - used in rye to prevent ergot(assoc w ergot poisoning & St. Anthony’s Fire) - ergot has a chemical similar to LSD; ergot poisoning causes hallucination- last case of ergot poisoning in Pont St. Esprit in 1951 - Swiss cheese has holes - propionibacterium shermaniibacteria acts on lactic acidto produce propionic acid & CO2- Swiss Cheese makes its own preservativeàpropionic acid(20X greater than what is added to bread)àcalcium propionate is converted to propionic acid when added to bread - in Europe, no preservatives are needed for bread bc it’s not kept for any length of time Video 11: Conclusion - Black Tower “German Wine” (actually a blend of wines from many European Countries) - ice creamàguar gum, carob bean gum, carboxymethylcellulose, carrageenan, gum Arabic - bc there’s no cream, gums are added for texture- carboxymethylcelluloseprevents formation of ice crystalsby absorbing moisture - when open freezer, moisture comes in & causes ice crystals - radishes & celery contain goitrogens, which may lead to development of goiter - cheese has tyraminethat can cause high blood pressure (headaches) - oranges have tangeritinwhich is embryotoxic(potential birth defects) - carrots have myristicin, a hallucinogen- bananas have serotoninwhich can lower the sex drive- apples have phlorizin,