By Wan Azlina Ahmad, Wan Yunus Wan Ahmad, Zainul Akmar Zakaria, Nur Zulaikha Yusof
Environmental matters concerning non-stop use of man-made dyes observed a revival within the call for for typical dyes as traditional dyes convey larger biodegradability and customarily have a better compatibility with the surroundings. notwithstanding, one of many barriers at the use of typical dyes or pigments is the low extraction yield elements (a few grams of pigment in step with kg of dried uncooked material). for this reason, the exploitation of alternative organic assets comparable to fungi, micro organism and mobile cultures bargains attention-grabbing substitute. Microbial pigments similar to from bacterial origins supply the virtue when it comes to construction in comparison to pigments extracted from greens or animals, because of its easy cellphone and quick culturing process. This ebook deals attention-grabbing perception into preliminary works performed to illustrate the aptitude use of bacterial pigment as colorant for varied applications.
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Extra info for Application of Bacterial Pigments as Colorant: The Malaysian Perspective
In most cases, it is a minor component of the total microflora (Balows et al. 1992). Its colonies are slightly convex, not gelatinous, regular and violets, although irregular variants and non-pigmented colonies can also be found (Sneath 1994). C. violaceum has been reported to produce a violet pigment called violacein. Violacein possesses anti-leishimanial (Leon et al. 2001), anti-viral (Andrighetti-Fröhner et al. 2003), antitumoral (Ueda et al. 1994, Melo et al. 2000) and anti-Mycobacterium tuberculosis (De Souza et al.
Indologenes, C. indoltheticum, C. meningosepticum and C. scophthalmum. Six species, Chryseobacterium defluvii (Kämpfer et al. 2003), C. joostei (Hugo et al. 2003), C. miricola (Li et al. 2003), C. daecheongense (Kim et al. 2005), C. formosense (Young et al. 2005) and C. taichungense (Shen et al. 2005), have been added to the genus recently. Chryseobacterium strains produce translucent colonies, shiny with entire edges, but on prolonged incubation the colonies were not visible as single entities probably due to the profuse production of extracellular substances.
3 UV/vis spectrum of crude-purple pigment at various pH values (a) C C C O C C C O (b) NR2 HC C C O H H NR2 HC C C O H H Fig. , longer wavelength for transition (Mohan 2007). FTIR analysis of the crude-violet pigment was carried out as follows; The RWS sample (1 mg) was ground with 200 mg of KBr (spectroscopic grade) in a mortar before pressed into 10 mm diameter disks under 6 tons of pressure. FTIR spectra were obtained on a FT–IR 8300, Shidmadzu spectrometer. The analysis conditions used were 16 scans at a resolution of 4 cm-1 measured between 400 and 4,000 cm-1.