Negative, anionic, or acidic dyes: contain functional groups that have a negative charge. Examples include eosin, nigrosin and Congo red. These dyes are repelled by the negatively charged surface of ...
In the wine making process yeast cells are kept short of oxygen. This causes sugars in the grape juice to ferment which forms alcohol and carbon dioxide. In cheese and yoghurt, bacteria perform a ...
In the wine making process yeast cells are kept short of oxygen. This causes sugars in the grape juice to ferment which forms alcohol and carbon dioxide. In cheese and yoghurt, bacteria perform a ...
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