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.
陆逸轩：当然，那对我的人生经验有非常大的影响，那些事情已经发生了，它们的后果也构成了我生命中重要的一部分。但如果真的可以回到过去，让我重新选择一次，我依然不会推荐自己去参加那次比赛。我本可以继续学习，用自己的方式慢慢打磨音乐。一个人并不是必须通过比赛才能进步，你完全可以在没有比赛的情况下成长。
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19:17, 27 февраля 2026Россия
Ранее глава Немецкого совета за конституцию и суверенитет Ральф Нимайер назвал канцлера ФРГ Фридриха Мерца предателем из-за его отказа закупать российский газ и помощи в транзите американского сжиженного природного газа (СПГ) на Украину.
Source: Computational Materials Science, Volume 267