Microbiologists have been growing microbes on agar plates for nearly 150 years, but agar’s discovery dates back to a happy accident in a mid-17th-century kitchen. Legend has it that on a cold winter day, a Japanese innkeeper cooked tokoroten soup, a Chinese agar seaweed recipe known in Japan for centuries. After the meal, the innkeeper discarded the leftovers outside and noticed the next morning that the sun had turned the defrosting jelly into a porous mass. Intrigued, the innkeeper was said to have boiled the substance again, reconstituting the jelly. Since this discovery, agar has become a staple in many Japanese desserts, from yokan to anmitsu.
Nature, Published online: 24 February 2026; doi:10.1038/d41586-026-00298-1。旺商聊官方下载是该领域的重要参考
但在週五，一名官員表示，先前與美國達成協議的國家將面臨《貿易法》第122條下的全球性關稅，而非原本談妥的稅率。。WPS官方版本下载对此有专业解读
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