在非离子表面活性剂胶束水溶液中进行深层培养红曲霉来提取细胞内色素。
Perstraction of intracellular pigments by submerged cultivation of Monascus in nonionic surfactant micelle aqueous solution.
机构信息
School of Biological Science and Engineering, South China University of Technology, Guangzhou 510006, People's Republic of China.
出版信息
Appl Microbiol Biotechnol. 2012 Apr;94(1):81-9. doi: 10.1007/s00253-011-3851-9. Epub 2012 Jan 7.
"Milking processing" describes the cultivation of microalgae in a water-organic solvent two-phase system that consists of simultaneous fermentation and secretion of intracellular product. It is usually limited by the conflict between the biocompatibility of the organic solvent to the microorganisms and the ability of the organic solvent to secret intracellular product into its extracellular broth. In the present work, submerged cultivation of Monascus in the nonionic surfactant Triton X-100 micelle aqueous solution for pigment production is exploited, in which the fungus Monascus remains actively growing. Permeabilization of intracellular pigments across the cell membrane and extraction of the pigments to the nonionic surfactant micelles of its fermentation broth occur simultaneously. "Milking" the intracellular pigments in the submerged cultivation of Monascus is a perstraction process. The perstractive fermentation of intracellular pigments has the advantage of submerged cultivation by secretion of the intracellular pigments to its extracellular broth and the benefit of extractive microbial fermentation by solubilizing the pigments into nonionic surfactant micelles. It is shown as the marked increase of the extracellular pigment concentration by the submerged cultivation of Monascus in the nonionic surfactant Triton X-100 micelle solution.
“挤奶式处理”描述了在水-有机溶剂两相体系中培养微藻的过程,该体系由细胞内产物的同时发酵和分泌组成。它通常受到有机溶剂对微生物的生物相容性与有机溶剂将细胞内产物分泌到其细胞外培养液中的能力之间的冲突限制。在本工作中,利用非离子表面活性剂 Triton X-100 胶束水溶液对红曲霉菌进行了浸没法生产色素,在此过程中真菌红曲霉菌保持着旺盛的生长。细胞内色素透过细胞膜的渗透以及将色素提取到发酵液的非离子表面活性剂胶束中同时发生。在红曲霉菌的浸没法培养中,“挤奶”细胞内色素是一种强化提取过程。细胞内色素的强化提取发酵通过将细胞内色素分泌到细胞外培养液中具有浸没法培养的优势,并且通过将色素溶解到非离子表面活性剂胶束中具有萃取微生物发酵的优势。这表现在红曲霉菌在非离子表面活性剂 Triton X-100 胶束溶液中的浸没法培养中细胞外色素浓度的显著增加。