Optimization of ultrasonic-assisted extraction via multiresponse surface for high antioxidant recovery from Chlorella vulgaris (Chlorophyta)


Nasir N. T. B. M., ŞAHİN S., ELİBOL ÇAKMAK Z., ÇAKMAK T.

PHYCOLOGIA, vol.56, no.5, pp.561-569, 2017 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 56 Issue: 5
  • Publication Date: 2017
  • Doi Number: 10.2216/16-132.1
  • Journal Name: PHYCOLOGIA
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.561-569
  • Keywords: Antioxidant, Central composite design, Chlorella vulgaris, Multiresponse surface methodology, Ultrasonic-assisted extraction, TOTAL PHENOLIC CONTENT, WATER EXTRACTION, METHODOLOGY RSM, CAROTENOIDS, CAPACITY, CYANOBACTERIA, POLYPHENOLS, MICROALGAE, PROFILES, SOLVENTS
  • Bursa Uludag University Affiliated: Yes

Abstract

The present study reports on the extraction of antioxidant compounds from Chlorella vulgaris. Multiresponse surface methodology coupled with a central composite design was used to optimize the independent parameters for ultrasonic-assisted extraction (UAE). Four independent parameters were optimized, including extraction time (15-155 min), ethanol volume (35-95%, v/v), extraction temperature (15-75 degrees C) and liquid/solid ratio (30-150 ml g(-1\)). Total phenolic content and antioxidant capacity [2,2'-azinobis(3-ethylbenzothiazoline-6-sulphonic acid) and chromiumreducing antiaoxidant capacity methods] were considered response parameters, whereas the effects of extraction time, ethanol volume, extraction temperature and liquid/solid ratio were studied. The optimal condition was obtained with an extraction time of 146 min, ethanol volume of 71% (v/v), extraction temperature of 72 degrees C and liquid/solid ratio of 62 ml g(-1) of sample. The experimental values agreed with predicted values within a 95% confidence level. This indicates that multiresponse surface methodology is suitable for optimizing UAE of antioxidant compounds from C. vulgaris.