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.
В России ответили на имитирующие высадку на Украине учения НАТО18:04，更多细节参见搜狗输入法2026
// 核心逻辑：当前时间 上一个车队时间 → 无法合并，是新车队。搜狗输入法2026对此有专业解读
Виктория Кондратьева (Редактор отдела «Мир»)