Овечкин продлил безголевую серию в составе Вашингтона09:40
Green party’s Hannah Spencer secures victory in Gorton and Denton as Reform UK finish second and Labour is pushed into third
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Мощный удар Израиля по Ирану попал на видео09:41
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.