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Optimization of ultrasound-assisted solvent extraction of phycocyanin and phenolics from Arthospira platensis var. ‘lonor’ biomass

This study describes the enhanced and simultaneous extraction of phycocyanin and phenolics from Arthospira platensis biomass. Ultrasound-assisted solvent extraction was investigated to determine its efficacy regarding phycocyanin and phenolics yield. An optimization experiment using response surface methodology revealed that the variables ethanol concentration (20%–95%, v/v), extraction temperature (15°C–65°C), sonicator amplitude (20%–100%) and extraction time (60–300 s) have a significant effect on phycocyanin and phenolics yield. The maximum yield of phycocyanin (29.9 mg/g) and total phenolics (2.4 mg/g) was predicted to occur at 40% ethanol concentration, 34.9°C extraction temperature, sonicator amplitude of 95% and extraction time of 104.7 s. The resultant extract exhibited a dose-dependent antioxidant response with an IC50 value of 85.75 μg/ml. This extract can be incorporated into functional foods as the extracting solvents ethanol and water have GRAS (generally recognized as safe) status.

DOI: 10.17470/NF-017-1010-4

DATE: 2017

AUTHOR/S: Mazumder A, Prabuthas P, Mishra HN

ABSTRACT:
This study describes the enhanced and simultaneous extraction of phycocyanin and phenolics from Arthospira platensis biomass. Ultrasound-assisted solvent extraction was investigated to determine its efficacy regarding phycocyanin and phenolics yield. An optimization experiment using response surface methodology revealed that the variables ethanol concentration (20%–95%, v/v), extraction temperature (15°C–65°C), sonicator amplitude (20%–100%) and extraction time (60–300 s) have a significant effect on phycocyanin and phenolics yield. The maximum yield of phycocyanin (29.9 mg/g) and total phenolics (2.4 mg/g) was predicted to occur at 40% ethanol concentration, 34.9°C extraction temperature, sonicator amplitude of 95% and extraction time of 104.7 s. The resultant extract exhibited a dose-dependent antioxidant response with an IC50 value of 85.75 μg/ml. This extract can be incorporated into functional foods as the extracting solvents ethanol and water have GRAS (generally recognized as safe) status.

KEYWORDS:
Arthospira platensis, Phycocyanin, Phenolics, Ultrasound-assisted extraction, Antioxidant activity

 

10.17470/NF-017-1010-4

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International Journal on Nutraceuticals, Functional Foods and Novel Foods
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