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Indian Journal of Pharmaceutical Education and ResearchNOW IN
Article

Effect of Thermal Treatment on Synephrine, Ascorbic Acid and Sugar Content of Citrus aurantium (Bitter Orange) Juice

Evren Caglar Eroglu1★, Zeynettin Baysal1, Mustafa Unlu1, Ubeyit Seday1, Zafer Karasahin1★ Corresponding author

  1. 1Alata Horticultural Research Institute, Department of Postharvest Physiology, Mersin, TURKEY.

CORRESPONDENCE

Evren Caglar Eroglu

Alata Horticultural Research Institute, Department of Postharvest Physiology, Mersin, TURKEY.

evcager@gmail.com

Volume 51, Issue 3S2 · pp. s412–s416 · PUBLISHED 2017 · DOI: 10.5530/ijper.51.3s.58

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ABSTRACT

Objective / Purpose: The aim of this study was to understand the change of synephrine, ascorbic acid and sugar contents after thermal treatment of peeled and grated Citrus aurantium (Bitter Orange) Juice. Material and Methods: Citrus aurantium was extracted either by peeling or grating methods. Clarification of juice was achieved by a pectic enzyme. After filtration, juices were thermally treated using rotary evaporator until 67ºBrix. Synephrine, sugar and ascorbic acid analysis were performed with a HPLC system. Results: All compounds’ amounts, except synephrine, changed significantly after thermal treatment. The results, given as dry matter based, were as below. Synephrine contents of fruit juice and concentrated juice of grated bitter oranges were 14.15 g/L and 12.88 g/L, respectively. Ascorbic acid contents of fruit juice and concentrated juices of grated sample were 6.33 and 5.85 g/L, respectively. Synephrine content of peeled fruit juice and concentrated samples were 12.84 and 10.64 g/L, respectively. Ascorbic acid content of peeled fruit juice and concentrated samples were 5.28 and 4.31 g/L, respectively. Conclusion: Thermal treatment has no significant effect on synephrine content of fruit juices. Ascorbic acid content decreased significantly after thermal treatment. Moreover, glucose and fructose content of samples increased and sucrose content diminished significantly.

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    Eroglu, E. C., Baysal, Z., Unlu, M., Seday, U., & Karasahin, Z. (2017). Effect of Thermal Treatment on Synephrine, Ascorbic Acid and Sugar Content of Citrus aurantium (Bitter Orange) Juice. Indian Journal of Pharmaceutical Education and Research, 51(3S2), s412–s416. https://doi.org/10.5530/ijper.51.3s.58