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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.

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