MICR 4520 Study Guide - Midterm Guide: Pediococcus, Chardonnay, Zygospore
22 May 2016
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Middle of october prevents proper ripening in ontario. Fermentation: process of deriving energy from oxidation of organic compounds, endogeneous electron acceptor (usually organic)- in vintification organic compounds oxidized are sugars and terminal electron acceptor is acetaldehyde. Acid (6 to9 g/l)-white, 4. 7-6 for red. Co2 and so2 blenketing- antioxidant in food industry. Harvesting can be by hand, dependant on labour costs, machines cheaper. Positive displacement (piston: peristaltic pump- similar to small intestines. Presses: bladder for gentle pressing (balloon inside tank, squishes grapes against walls, presses, basket, horizontal plate press, screw press o candida sp dies when alcohol breaks membrane. A number of genetically modified strains have been constructed and are available commercially: malo-ethanolic fermenting strains. White wine: destem, crush gentle, press (only 1% juice left in grapes) ,ferment (sugar and malic acid =good, clarify, stabilize, age, filter bottle, sell o, tank designs:
