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链霉素 ２３７８菌株所产生的抗生物质对苜蓿（Ａｐｈｉｓ ｍｅｄｉｃａｇ６ｎｉｓ）有较强的触杀作用。活性物质经分离纯化和紫外、红外吸收光谱，质谱及核磁共振谱分析，发现该活性物质与已知抗生素 Ａｃｔｉｎｏｐｙｒｏｎｅｓ Ａ为同一物质。
Streptomycin 2378 strains produced by the antimicrobial alfalfa (Aphis medicag6nis) have a strong contact role. The active substance was isolated and purified and analyzed by UV, IR, MS and NMR spectra and found to be the same substance as Actinopyrones A, a known antibiotic.