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Sensory evaluation, antioxidant, antimicrobial activities and colour of strawberry nectar enriched with prodigiosin pigment produced from Serratia marcescens
Faculty
Agriculture
Year:
2019
Type of Publication:
ZU Hosted
Pages:
Authors:
Behery Ahmid Ali Salman
Staff Zu Site
Abstract In Staff Site
Journal:
Pak. J. Biotechnol. University of Sindh, Pakistan
Volume:
Keywords :
Sensory evaluation, antioxidant, antimicrobial activities , colour
Abstract:
This study was performed to evaluate the impact of natural red pigment (prodigiosin) extracted from local microorganism of Serratia marcescens as a natural colouring, antioxidant and antimicrobial agents in strawberry nectar. The local S. marcescens was identified by morphological, biochemical tests as well as sequencing a fragment of the 16S rDNA gene as new Egyptian strain namely S. marcescens A1A. The antioxidant scavenging of prodigiosin was examined by 2,2-diphenyl-1-picrylhydrazyl (DPPH). The antibacterial activity of prodigiosin was assayed against three bacterial indicators (B. cereus, Staph. aureus and E. coli) by measuring the inhibition zones using disc-diffusion assay on Muller Hinton Agar. The results revealed that the free radical scavenging activity was increased in the prepared solutions with increasing the concentration of prodigiosin. The prodigiosin of S. marcescens A1A has prohibited the growth of tested bacteria effectively. On the other hand, the fortification of strawberry nectar with prodigiosin pigment improved the antimicrobial, antioxidant activities, colour, taste, clarity, thickness and overall acceptability of resulted products.
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Behery Ahmid Ali Salman, "Impact of some specific phosphorus solubilizing microorganisms and different phosphorus fertilizers on nutrients content and yield of faba bean (Vicia faba L.) in sandy soil", J. Soil Sci. Agric. Eng., Mansoura Univ., 2019
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Behery Ahmid Ali Salman, "Efficiency of two molecular tools based on DNA used for differentiating some microbial strains", AUJAS, Ain Shams Univ, 2019
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Behery Ahmid Ali Salman, "SENSORY EVALUATION, ANTIOXIDANT, ANTIMICROBIAL ACTIVITIES AND COLOUR OF STRAWBERRY NECTAR ENRICHED WITH PRODIGIOSIN PIGMENT PRODUCED FROM SERRATIA MARCESCENS", Pak. J. Biotechnol., 2019
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