Flexirubin-type Pigment Production from Chryseobacterium artocarpi CECT 8497 and its Application as Natural In

Abstract

Interest and demand for bacterial pigments is growing due to rising awareness of toxicity of synthetic dyes. This study evaluated on the production of flexirubin-type pigment from Chryseobacterium artocarpi CECT 8497 using liquid pineapple waste in 5-L bioreactor and its application as environmental-friendly ink. Liquid pineapple waste supported bacterial growth and pigment production for C. artocarpi CECT 8497. The ink was successfully formulated with polyvinyl butyral and polyvinyl pyrrolidone giving a smooth texture. The functional groups of formulated ink identified using FTIR were OH, C-C and C-H. Flexirubin ink was stable during the entire storage period of 30 days at temperatures, ranging from 25 to 70°C, pH 1.0 to 11.0 and in the presence and absence of light. This is the first report on ink formulation of flexirubin-type pigment from C. artocarpi CECT 8497 and its potential application on plastic materials.

Production, Extraction and Partial Characterization of Natural Pigments from Chryseobacterium sp. kr6 Growing on Feather Meal Biomass

“…Values for Chroma (saturation) and Hue angle were calculated as 33.2 ± 3.9 and 83.2 ± 1.9, respectively. Likewise, previous studies on the colorimetric parameters of flexirubintype pigments extracted from Chryseobacterium strains also revealed positive b* values and Hue angle values close to 80°, which represent colors in the yellow/orange region [31,32].…”

“…The antioxidant activity of flexirubins can be attributed to the hydrogen atom transfer from the phenolic hydroxyl group and the long polyene chain, as previously determined through different assays [42]. Moreover, flexirubin pigments produced by Chryseobacterium strains are very stable under UV and sunlight exposure even at high temperatures [32,40], suggesting the importance of these pigments for a broad range of applications. In this regard, polymeric nanofibers incorporating flexirubin showed ABTS radical scavenging activity and the ability to reduce enzymatic browning of apple slices.…”

Solubility Study of Flexirubin Pigment Isolated from Chryseobacterium artocarpi CECT 8497 in Bio-Based Solvents

“…Fewer studies were conducted on flexirubin pigment compared to other yellow pigments, thus reducing its marketability rate. However, existing studies have demonstrated that flexirubin pigment from C.artocarpi can be used as a natural ink, antioxidant, and anticancer agents [1][2][3].…”