Effect of thermal and high pressure processing on stability of betalain extracted from red beet stalks
Red beet stalks are a potential source of betalain, but their pigments are not widely used because of their instability. In the present work, the applicability of high pressure processing (HPP) and high temperature short time (HTST) thermal treatment was investigated to improve betalain stability in extracts with low and high concentrations. The HPP was applied at 6000 bar for 10, 20 and 30 min and HTST treatment was applied at 75.7 °C for 80 s, 81.1 °C for 100 s and 85.7 °C for 120 s, HPP treatment did not show any improvement in the betalain stability. In turn, the degradation rate of the control and the HTST thermal treatment at 85.7 °C for 120 s of the sample with high initial betalain concentration were 1.2 and 0.4 mg of betanin/100 ml of extract per day respectively. Among the treatments studied, HTST was considered the most suitable to maintain betalain stability from red beet stalks.
KeywordsRed beet residue HTST HPP Natural pigments Betalain extract
The authors gratefully acknowledge the financial support provided by CAPES (Coordination for the Improvement of Higher Education Personnel—Brazil 99999.006557/2015-05) and the Department of Chemical and Materials Engineering of University of Auckland.
- Anese M, Nicoli MC, Dall’Aglio G, Lerici CR (1995) Effect of high pressure treatments on peroxidase and polyphenoloxidase activities. J Food Biochem 18:285–293. https://doi.org/10.1111/j.1745-4514.1994.tb00503.x CrossRefGoogle Scholar
- Barbosa-Cánovas GV, Góngora-Nieto MM, Rodriguez JJ, Swanson BG (2005) Nonthermal processing of foods and emerging technologies. In: Barbosa-Cánovas GV (ed) Food engineering: encyclopedia of life support sciences. EOLSS Publishers/UNESCO, Paris, pp 575–593Google Scholar
- Briones-Labarca V, Plaza-Morales M, Giovagnoli-Vicuña C, Jamett F (2015) High hydrostatic pressure and ultrasound extractions of antioxidant compounds, sulforaphane and fatty acids from Chilean papaya (Vasconcellea pubescens) seeds: effects of extraction conditions and methods. LWT-Food Sci Technol 60:525–534. https://doi.org/10.1016/j.lwt.2014.07.057 CrossRefGoogle Scholar
- Damodaran S, Parkin KL, Fennema OR (2008) Fennema’s food chemistry, 4th edn. CRC Press, Boca RatonGoogle Scholar
- Huang W, Bi X, Zhang X, Liao X, Hu X, Wu J (2013) Comparative study of enzymes, phenolics, carotenoids and color of apricot nectars treated by high hydrostatic pressure and high temperature short time. Innov Food Sci Emerg Technol 18:74–82. https://doi.org/10.1016/j.ifset.2013.01.001 CrossRefGoogle Scholar
- Koubaier HBH, Snoussi A, Essaidi I, Chaabouni MM, Thonart P, Bouzouita N (2014) Betalain and phenolic compositions, antioxidant activity of Tunisian red beet (Beta vulgaris L. conditiva) roots and stems extracts. Int J Food Prop 17:1934–1945. https://doi.org/10.1080/10942912.2013.772196 CrossRefGoogle Scholar
- Stintzing FC, Carle R (2008a) Betalains in food: occurrence, stability, and postharvest modifications. In: Socaciu C (ed) Food colorants: chemical and functional properties. CRC Press, Boca Raton, pp 277–299Google Scholar
- Stintzing FC, Carle R (2008b) Analysis of Betalains. In: Socaciu C (ed) Food colorants: chemical and functional properties. CRC Press, Boca Raton, pp 507–520Google Scholar
- Yong G (2014) Enzymatic engineering. Science Press; Alpha Science International Ltd., Oxford; BeijingGoogle Scholar