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Nutrition question: Does ketchup have to be refrigerated? No, however it will spoil quicker than if it is refrigerated. This is why restaurants can keep ketchup out on the table. At night the bottles ... No, however it will spoil quicker than if it is refrigerated. This is why restaurants can keep ketchup out on the table.
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I believe that we would all agree that a french-fry would simply be an obese potato chip and never know the notoriety it enjoys today without ketchup. Halloween props would be poorly stained with red Kool-Aid instead of sporting the trademark ketchup "blood" we come to expect and delight in.
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It's advisable to refrigerate ketchup after opening the bottle unless you consume it pretty quick. Something will surely spoil in ketchup when left exposed to the air over time. It's just a question of time.
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My son came up with an interesting question a few months back.... "Why don't resturants have to refrigerate their ketchup?" ; I guess the real question is... why doesn't ketchup spoil at room temperatures? Any food scientists out there?
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OurFood: Information about General Bacteriology ... They are important in food and beverage production, as well as in the bioproduction of industrial chemicals, but they are also known to spoil food and beverages. The classification of acetic bacteria is being rearranged using 16S rRNA sequence analysis.
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Objectives: Students will be involved in making homemade ketchup. They will compare theirs to store-bought brands and learn some general ketchup facts. ... Science: bottling plant, how tomatoes grow, the tomato plant, can ketchup spoil?, scientific observations of tomato...
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