Perilla frutescens var. crispa (Lamiaceae) is an annual plant that is the botanical origin of the natural medicine “Soyo” listed in the Japanese Pharmacopoeia and is also used as a fragrant vegetable. Its characteristic components are essential oils and anthocyanins. Cyanogenic glycosides have also been isolated from perilla, but no reports have clarified which cyanogenic glycosides are abundant or differences in cyanogenic glycoside content according to the extent of perilla leaf growth or growth stage. Here, for the first time we determined the content and distributions of cyanogenic glycosides in perilla. The picric acid test, a common qualitative test for cyanogenic compounds, was used to quickly and semi-quantitatively detect cyanogenic compounds in perilla. Prunasin was the most abundant cyanogenic glycoside. The prunasin content per unit mass of perilla leaves varied by strain, regardless of leaf color or the main compound in the essential oils of each strain. Prunasin was higher in fresh leaves than in dried leaves and higher in young leaves than in mature leaves. When perilla was cultivated in an outdoor field, the prunasin content was initially high during the vegetative stage in summer before decreasing and then increasing until flower buds were beginning to form, and then gradually decreased again after flowering.

紫苏_ 克里斯帕（唇形科）是一种一年生植物，是日本药典中所列的天然药物“Soyo”的植物来源，也被用作芳香蔬菜。其特征成分是精油和花青素。也有人从紫苏中分离出氰苷，但尚无报道阐明哪些氰苷含量丰富，或根据紫苏叶的生长程度或生长阶段不同，氰苷含量存在差异。在这里，我们首次确定了紫苏中氰苷的含量和分布。苦味酸试验是一种常见的生氰化合物定性试验，用于快速、半定量检测紫苏中的生氰化合物。Prunasin 是最丰富的氰苷。紫苏叶每单位质量的 prunasin 含量因菌株而异，与叶片颜色或每种菌株精油中的主要化合物无关。Prunasin 在鲜叶中的含量高于干叶中的含量，在幼叶中的含量高于成熟叶中的含量。露地栽培紫苏时，夏季生长期紫苏素含量先高后下降，直至花蕾开始形成，紫苏素含量又逐渐下降。