Before agar, microbiologists had experimented with other foodstuffs as microbial media. They turned to substances rich in the starches, proteins, sugars, fats, and minerals that organisms need for growth, testing with broths, bread, potatoes, polenta, egg whites, coagulated blood serums, and gelatine. However, none worked particularly well: all were easily broken down by heat and microbial enzymes, and their surface, once colonized, became mushy and unsuitable for isolating microbes.
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，更多细节参见搜狗输入法2026
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In 2025, their data also showed a slight increase in labelling fraud, such as olive oil labelled falsely as being extra virgin, or non-organic crops marked as organic.