Biomass and Bioenergy
Biomass and Bioenergy
5 years ago

Optimization of carotenoids and antioxidant activity of oils obtained from a co-extraction of citrus (Yuzu ichandrin) by-products using supercritical carbon dioxide

Optimization of carotenoids and antioxidant activity of oils obtained from a co-extraction of citrus (Yuzu ichandrin) by-products using supercritical carbon dioxide
The processing of citrus fruits leaves massive by-products. Those by-products which are considered as wastes contain a wide range of healthy bioactive compounds where carotenoids are among of them. This work aimed to study the optimum supercritical carbon dioxide (SC-CO2) extraction conditions for maximization of carotenoid content and antioxidant activity for citrus by-products, using response surface methodology so that those by-products can not only be valorized effectively but also to reduce disposal problems. The effects of pressure, temperature, and mixing ratio (citrus peel-to-citrus seed mass ratio) on the recovery of carotenoids and antioxidant activity were studied. A second-order polynomial model showed a suitable fitting of the experimental values regarding the carotenoid content (R2 = 0.9974, p < 0.05) and antioxidant activity (DPPH (R2 = 0.9919, p < 0.05) and ABTS assay (R2 = 0.9885, p < 0.05)). An optimization and validation study was performed and the optimum extraction conditions were 25.196 MPa, 44.88 °C and 1.91 for carotenoid content, 29.960 MPa, 41.08 °C and 1.52 for DPPH assay and 29.983 MPa, 43.14 °C and 1.50 for ABTS assay, respectively, for pressure, temperature and mixing ratio. The corresponding predicted values were 1.983 mg g−1 oil for carotenoid content, 0.762 mg cm−3 for DPPH, and 1.220 mg cm−3 for ABTS assay. The predicted and the experimental values were well in agreement, thus affirming the adequacy and validity of the predicted models. Overall, the combination of citrus by-products could yield the oils with good bio-activity and this could be a new valorization method.

Publisher URL: www.sciencedirect.com/science

DOI: S0961953417302581

You might also like
Discover & Discuss Important Research

Keeping up-to-date with research can feel impossible, with papers being published faster than you'll ever be able to read them. That's where Researcher comes in: we're simplifying discovery and making important discussions happen. With over 19,000 sources, including peer-reviewed journals, preprints, blogs, universities, podcasts and Live events across 10 research areas, you'll never miss what's important to you. It's like social media, but better. Oh, and we should mention - it's free.

  • Download from Google Play
  • Download from App Store
  • Download from AppInChina

Researcher displays publicly available abstracts and doesn’t host any full article content. If the content is open access, we will direct clicks from the abstracts to the publisher website and display the PDF copy on our platform. Clicks to view the full text will be directed to the publisher website, where only users with subscriptions or access through their institution are able to view the full article.