Guar gum, a plant colloid, costs less than agar and is better suited for growing thermophilic bacteria, but is also more difficult to handle, being more viscous and less transparent. The bacterial polysaccharide xanthan is cheaper as well but forms weaker jellies that, as with carrageenan, might result in puncturing its surface. Other colloids, like alginate (from brown seaweed) and gellan gum (from a bacterium), don’t set solely based on temperature and require additives for gelation. These additives might interfere with microbial growth and make the preparation of those jellies less handy than agar plates.
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Раскрыты подробности похищения ребенка в Смоленске09:27
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"A lot of people use the online world as a place where they can talk about things that they might not feel safe talking about with people in the real world, where being queer might result in being prosecuted," he told the BBC.，更多细节参见搜狗输入法2026
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