The invention relates to a method for producing lactones from a strain of Aureobasidium pullulans that are produced from a pre-culture of the Aureobasidium pullulans strain CBS 771.97, obtained from CBS-KNAW Fungal Biodiversity Center, Uppsalalaan 8, 3584 CT Utrecht, Netherlands, or related strains; from an inoculum obtained from the pre-culture; a culture is produced by fermentation at a temperature between 20° C. and 40° C. over a period of at least 3 days so as to produce metabolites, in a sterilized aqueous production medium containing: a carbon source; a nitrogen source; a mineral salt solution; and a calcium source, at a concentration between 2 and 100 mM; and following the fermentation period, converting the metabolites produced into a lactone mixture comprising (R)-5,6-dihydro-6-pentyl-2H-pyran-2-one (or (R)-(−)-massoia lactone) and/or (4R,6R)-4-hydroxy-6-pentyl-tetrahydro-2H-pyran-2-one.
本发明涉及一种从Aureobasidium pullulans菌株中生产内酯的方法,该菌株是从
CBS-KNAW真菌
生物多样性中心,Uppsalalaan 8,3584 CT Utrecht,Netherlands获得的Aureobasidium pullulans菌株
CBS 771.97或相关菌株的预培养物中产生的;从预培养物中获得的接种体;在20℃至40℃的温度下发酵产生培养物。在灭菌的含
水生产
培养基中发酵至少 3 天,以产生代谢物,该
培养基含有碳源、氮源、矿物盐溶液和
钙源,浓度在 2 至 100 mM 之间;发酵期结束后,将产生的代谢物转化为内酯混合物,其中包括 (R)-5,6-二氢-
6-戊基-2H-吡喃-2-酮(或 (R)-(-)-马索内酯)和/或 (4R,6R)-
4-羟基-6-戊基-四氢-
2H-吡喃-2-酮。