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左旋天冬素为结核菌及卡介苗培养基的主要成份。自卡介苗广为推行后,天冬素需要激增。本品的自给已成急待解决的问题。著者等于1950年从事研究本品的提取,并大量制造。成品经化学检定,纯度为99.80％;并经结核菌及卡介苗培养试验,结果良好。左旋天冬素的分子式为HOOC.CH(NH_2)CH_2.CONH_2。1806年Vauquelin及Robiquet二氏初发现于天门冬幼芽中。1895年Kinoshita 氏文中叙述黄豆天然生长的幼芽中含量甚丰。1942年Vickery氏等发表黄豆芽的培养及本品的提
L-asparagine is the main component of M. tuberculosis and BCG medium. Since the introduction of BCG, the asparagine has required a surge. The self-sufficiency of this product has become an urgent issue to be solved. The author was engaged in researching the extraction of this product in 1950 and made it in large quantities. The finished product was chemically assayed with a purity of 99.80%. The tubercle bacillus and BCG culture test showed good results. The formula of L-asparagine is HOOC.CH(NH2)CH2.CONH2. In 1806, Vauquelin and Robiquet first discovered in the bud of Asparagus. Kinoshita’s text in 1895 states that the natural sprouts of soybeans are abundant. In 1942, Vickery et al. published the cultivation of yellow bean sprouts and the extraction of this product.