In this study, bioproduction and application of a microbial pigment from Chryseobacterium and Deinococcus species screened from soil were investigated. The pigments extracted from both cell cultures were identified as a flexirubin (FL)- and deinoxanthin-type (DX). The isolated pigments showed a mass value of 618.48 and 584.41 m/z by LC/MS, respectively. Flask production of the crude FL pigment in complex medium yielded 0.443 ± 0.047 g/L, while crude DX production was less than 20 mg/L. Similar to previously identified FL and DX pigments, both have unsaturated long-chain alkyl-substituted phenol and cyclo-hexanone units and showed excellent radical scavenging capacities of 0.6 and 3.2 mg/mL IC₅₀ values, respectively. In order to utilize the pigments for functional painting materials, both pigments were mixed with casein paint to prepare FL bio-paint and DX bio-paint, respectively. Interestingly, yellow-colored FL bio-paint and red-colored DX bio-paint showed an outstanding coloration and coating performance onto glass plate. Furthermore, it was confirmed that the produced DX bio-paint had a unique crystal structure when analyzed by SEM.

在这项研究中，研究了从土壤中筛选出的金黄色杆菌和嗜球菌物种的微生物色素的生物生产和应用。从两种细胞培养物中提取的色素均被识别为柔红素（FL）型和去黄嘌呤型（DX）。通过LC / MS，分离出的颜料的质量值分别为618.48和584.41 m / z。在复杂培养基中烧瓶粗FL颜料的产量为0.443±0.047 g / L，而粗DX产量小于20 mg / L。与先前鉴定的FL和DX颜料相似，它们都具有不饱和的长链烷基取代的苯酚和环己酮单元，并具有出色的自由基清除能力，分别为0.6和3.2 mg / mL IC ₅₀值。为了将颜料用于功能性涂料，将两种颜料与酪蛋白涂料混合以分别制备FL生物涂料和DX生物涂料。有趣的是，黄色的FL生物涂料和红色的DX生物涂料在玻璃板上具有出色的着色和涂层性能。此外，证实了当通过SEM分析时，所产生的DX生物涂料具有独特的晶体结构。