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.
身处头部的华住率先选择从自身寻找破局之道。2026年，华住将持续推进“精益增长”战略，从单纯追求规模扩张转向注重单店效率与质量提升，通过运营优化、产品迭代等方式实现可持续增长。
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Read the full list of nominations on the SAG Awards website.