Terpene alcohol is widely used in perfumes and is known to possess antibacterial activity. Moreover, in its glycosylated form, it can be applied as a nonionic surfactant in food, and in the pharmaceutical, chemical, cosmetic, and detergent industries. Presently, chemical production of terpene glucosides is hampered by high costs and low yields. Here, we investigated the microbial glucosylation of nerol (cis-3,7-dimethylocta-2,6-dien-1-ol), a component of volatile oils, by Agrobacterium sp. M-12 isolated from soil. A microbial reaction using washed cells of Agrobacterium sp. M-12, 1 g/L of nerol, and 100 g/L of maltose under optimal conditions yielded 1.8 g/L of neryl-α-d-glucopyranoside after 72 h. The molar yield of neryl-α-D-glucopyranoside was 87.6%. Additionally, we report the successful transglucosylation of other monoterpene alcohols, such as geraniol, (-)-β-citronellol, and (-)-linalool, by Agrobacterium sp. M-12. Thus, microbial glucosylation has potential widespread applicability for efficient, low-cost production of glycosylated terpene alcohols.
萜烯醇被广泛应用于香水中,并被认为具有抗菌活性。此外,在其糖基化形式下,它可以被应用于食品、制药、化学、化妆品和清洁剂行业中作为一种非离子表面活性剂。目前,萜烯葡萄糖苷的化学生产受到高成本和低产量的限制。在这里,我们研究了由土壤中分离的农杆菌M-12对挥发油成分之一的芳香醇(顺-3,7-二甲基辛-2,6-二烯-1-醇)进行的微生物葡萄糖化反应。在最佳条件下,使用Agrobacterium sp. M-12的洗涤细胞、1 g/L的芳香醇和100 g/L的麦芽糖的微生物反应在72小时后产生了1.8 g/L的芳樟醇-α-D-葡萄糖苷。芳樟醇-α-D-葡萄糖苷的摩尔收率为87.6%。此外,我们还报告了农杆菌M-12对其他单萜烯醇(如香叶醇、(-)-β-香茅醇和(-)-芳樟醇)的成功转移葡萄糖化反应。因此,微生物葡萄糖化具有广泛的应用潜力,可实现高效、低成本的糖基化萜烯醇生产。