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Valorization of Banana and Red Beetroot Peels: Determination of Basic Macrocomponent Composition, Application of Novel Extraction Methodology and Assessment of Biological Activity In Vitro

Author

Listed:
  • Danijela Šeremet

    (Faculty of Food Technology and Biotechnology, University in Zagreb, Pierottijeva 6, 10 000 Zagreb, Croatia)

  • Ksenija Durgo

    (Faculty of Food Technology and Biotechnology, University in Zagreb, Pierottijeva 6, 10 000 Zagreb, Croatia)

  • Stela Jokić

    (Faculty of Food Technology, Josip Juraj Strossmayer University of Osijek, Franje Kuhača 20, 31 000 Osijek, Croatia)

  • Ana Huđek

    (Faculty of Food Technology and Biotechnology, University in Zagreb, Pierottijeva 6, 10 000 Zagreb, Croatia)

  • Aleksandra Vojvodić Cebin

    (Faculty of Food Technology and Biotechnology, University in Zagreb, Pierottijeva 6, 10 000 Zagreb, Croatia)

  • Ana Mandura

    (Faculty of Food Technology and Biotechnology, University in Zagreb, Pierottijeva 6, 10 000 Zagreb, Croatia)

  • Jasna Jurasović

    (Institute for Medical Research and Occupational Health, Ksaverska Cesta 2, 10 000, Zagreb, Croatia)

  • Draženka Komes

    (Faculty of Food Technology and Biotechnology, University in Zagreb, Pierottijeva 6, 10 000 Zagreb, Croatia)

Abstract

The nutritional and bioactive content of banana and red beetroot peels was investigated. The basic macrocomponent composition was determined using standard AOAC (Association of Official Analytical Chemists) methods, while the recovery efficiency of bioactive compounds was investigated using conventional and innovative extraction techniques (subcritical water extraction, ultrasound- and microwave-assisted extraction). Extracts were analyzed for biological effects in vitro on human hepatic, tongue and colon cancer cell lines. A macrocomponent analysis revealed a notable amount of dietary fiber in banana and beetroot peels (39.0 and 33.6% dmb) and a relatively high content of protein in beetroot peel (18.3% dmb). Regarding the micronutrients-minerals, banana and beetroot peels were shown to be a very good source of potassium (75.06 and 41.86 mg g −1 dmb). Both extracts of banana and beetroot peels obtained by conventional extraction - decoction (100 °C, 20 min) exhibited the highest total phenolic content and antioxidant capacity. Additionally, in banana peel, these extracts were the richest in dopamine content (12.63 mg g −1 dmb). Extraction by infusion (80 °C, 30 min) yielded a beetroot peel extract with the highest total betacyanin content (9.80 mg g −1 dmb). Biological effects in vitro were dose- and time-dependent, as well as influenced by the presence of polysaccharides.

Suggested Citation

  • Danijela Šeremet & Ksenija Durgo & Stela Jokić & Ana Huđek & Aleksandra Vojvodić Cebin & Ana Mandura & Jasna Jurasović & Draženka Komes, 2020. "Valorization of Banana and Red Beetroot Peels: Determination of Basic Macrocomponent Composition, Application of Novel Extraction Methodology and Assessment of Biological Activity In Vitro," Sustainability, MDPI, vol. 12(11), pages 1-21, June.
    • Handle: RePEc:gam:jsusta:v:12:y:2020:i:11:p:4539-:d:366644
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    Citations

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    Cited by:

    1. Evidence Akhayere & Ashok Vaseashta & Doga Kavaz, 2020. "Novel Magnetic Nano Silica Synthesis Using Barley Husk Waste for Removing Petroleum from Polluted Water for Environmental Sustainability," Sustainability, MDPI, vol. 12(24), pages 1-16, December.
    2. Sunčica Beluhan & Filip Herceg & Andreja Leboš Pavunc & Senka Djaković, 2022. "Preparation and Structural Properties of Bacterial Nanocellulose Obtained from Beetroot Peel Medium," Energies, MDPI, vol. 15(24), pages 1-23, December.
    3. Nijolė Vaitkevičienė & Akvilė Sapronaitė & Jurgita Kulaitienė, 2022. "Evaluation of Proximate Composition, Mineral Elements and Bioactive Compounds in Skin and Flesh of Beetroot Grown in Lithuania," Agriculture, MDPI, vol. 12(11), pages 1-12, November.

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