Application of Bacterial Pigments as Colorant: The Malaysian by Wan Azlina Ahmad, Wan Yunus Wan Ahmad, Zainul Akmar Zakaria,

By Wan Azlina Ahmad, Wan Yunus Wan Ahmad, Zainul Akmar Zakaria, Nur Zulaikha Yusof

Environmental issues relating to non-stop use of man-made dyes observed a revival within the call for for common dyes as average dyes express higher biodegradability and usually have a better compatibility with the surroundings. even though, one of many barriers at the use of common dyes or pigments is the low extraction yield components (a few grams of pigment in line with kg of dried uncooked material). as a result, the exploitation of alternative organic resources akin to fungi, micro organism and cellphone cultures deals fascinating replacement. Microbial pigments akin to from bacterial origins supply the virtue by way of creation in comparison to pigments extracted from greens or animals, as a result of its uncomplicated phone and quick culturing procedure. This e-book bargains attention-grabbing perception into preliminary works conducted to illustrate the aptitude use of bacterial pigment as colorant for varied functions.

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From the spectrum obtained (Fig. 53 cm-1. Secondary amides are associated through H-bonding to form dimers (cis configuration) or polymers (trans configuration) resulting in the replacement of free N–H stretching band (Fig. 6). 93 cm-1 32 2 Isolation of Pigment-Producing Bacteria Fig. 5 FTIR spectrum for crude methanolic extract of violet pigment. (a) cis-dimer (b) transpolymer (a) O (b) R' H N N H O R' cis-dimer R' H C R R C O R R' R H N R O N N O H N R' R O H R' trans-polymer Fig. 6 Structure of secondary amides (a) ciscoid–ciscoid associations and (b) transoid– transoid polymeric association (trans secondary amide) or combination of C=O stretching and N–H in-plane bending (cis secondary amide) (Mohan 2007).

50 appeared which should represent deoxyviolacein, as suggested by DeMoss and Evans (1959). 5 g), methanol (80 mL), acetic acid (10 mL) and concentrated sulfuric acid (5 mL). Powdered form of the crude extract was analyzed for 1H NMR (400 MHz) and 13 C NMR (100 MHz) profiles using Bruker Avance 400 NMR spectrometer. Chemical shifts (in ppm) were reported relative to tetramethylsilane (TMS) with deuterated dimethyl sulfoxide (DMSO) as solvent. The 1H NMR spectrum showed the presence of 13 protons (Fig.

The use of these nutrient-rich agricultural wastes, which is renewable, abundant and easily available, even offers the potential for the production of value-added products such as specialty chemicals, biofuels and bioplastics. It also provides an ingenious way of protecting the environment by reducing the amount of waste to be treated, hence reducing the threat of environmental contamination. However, the pigment-producing bacteria needs to be adapted to grow in these agricultural-waste residues taking into consideration important growth parameters such as temperature, growth medium and light.

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