Photograph: Julian Chokkattu
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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广州中医药大学校长王宏斌说，学校将充分发挥中医药学科优势，以“技术赋能+产业联动+乡村振兴”模式，合作建设广东省南药种业创新园和国家级、省级南药产业园，全力服务“百千万工程”，构建“产学研用”协同创新体系。
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