Application of pressurized water extraction and spray drying techniques to produce soluble spearmint tea
Bioactive components of spearmint (Mentha spicata L.) including essential oil and phenolics were obtained by pressurized water extraction technique. The influences of 3 factors (temperature, time and extraction cycle) on the extraction yield of phenolics and essential oil were examined. The optimum points in pressurized water extraction were determined as 140 °C and 10 min for simultaneous extraction of essential oil and phenolics of spearmint. One extraction cycle in pressurized water extraction resulted in 88.2 and 76.7% recoveries for essential oil and phenolics, respectively. The extracts obtained by pressurized water extraction were transformed into soluble spearmint teas by spray drying with the aid of coating materials including Arabic gum and maltodextrin. The difference between the physicochemical properties (solubility, water content, color, antioxidant capacity, total phenolics) of soluble spearmint teas were insignificant (p > 0.05) when maltodextrin was replaced with Arabic gum from 0 to 100%. However, increase in the ratio of Arabic gum to maltodextrin significantly (p < 0.05) improved the essential oil retention in soluble spearmint teas. Descriptive sensory analyses revealed that use of equal amount of maltodextrin and Arabic gum gave rise to substantial retention of the specific flavor and aroma of spearmint in the final products.
KeywordsSpearmint Mentha spicata L. Pressurized water extraction Carvone Soluble spearmint tea
This project has been financially supported by the Scientific and Research Council of Turkey (TUBITAK) under the Project Number of 113O471.
- 1.M.H. Alu’datt, T. Rababah, M.N. Alhamad, K. Ereifej, M. Al-Mahasneh, S. Brewer, M. Rawshdeh, Optimization extraction conditions for phenolic compounds, antioxidant and inhibitory activities of angiotensin I-converting enzyme (ACE), α-glucosidase and α-amylase from Mentha spicata L. J. Food Biochem. 40, 335–344 (2015)CrossRefGoogle Scholar
- 5.T.K.T. Do, F. Hadji-Minaglou, S. Antoniotti, X. Fernandez, Secondary metabolites isolation in natural products chemistry: comparison of two semipreparative chromatographic techniques (high pressure liquid chromatography and high performance thin-layer chromatography). J. Chromatogr. A 1325, 256–260 (2014)CrossRefGoogle Scholar
- 24.C. Jinsui, C. Qun, L. Lina, J. Rohrer, Determination of phenolic compounds in apple orchard soil. https://assets.thermofisher.com/TFS-Assets/CMD/Application-Notes/AN-1077-Phenolic-Compounds-Apple-Orchard-Soil-AN70865-EN.pdf. Accessed 21 December 2017
- 32.E. Şarer, S.Y. Toprak, B. Otlu, R. Durmaz, Composition and antimicrobial activity of the essential oil from Mentha spicata L. subsp. spicata. J. Essent. Oil Res. 23, 106–108 (2011)Google Scholar