Annals of Microbiology

Table 1 Essential parameters of the pigments synthesized with different amino acids

From: Expression of a highly active β-glucosidase from Aspergillus niger AS3.4523 in Escherichia coli and its application in gardenia blue preparation

Amino acids	λmax (nm)	L^†	a^‡	b^§	Color
Val	584	70.29	14.44	− 16.21	Purple
Ala	582	69.52	18.19	− 6.08	Purple
Phe	582	65.28	18.01	− 13.61	Purple
Met	586	66.81	14.84	− 20.24	Purple
Lys	584	71.33	9.93	− 12.53	Blue
Arg	588	71.57	15.78	− 16.91	Purple

Note: ^†Represented the brightness of solution. The bigger of L’s value, the brighter of the solution
^‡Represented red-green index. The bigger of a’s value, the redder of the solution
^§Represented yellow-blue index. The smaller of b’s value, the bluer of the solution

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ISSN: 1869-2044

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