Acknowledgement
The research infrastructure provide by Universiti Teknologi Malaysia is greatly appreciated. Other individuals who have contributed to this research are also duly acknowledged.
References
- Ali, B.H., Blunden, G., Tanira, M.O. and Nemmar, A. (2008), "Some phytochemical, pharmacological and toxicological properties of ginger (Zingiber officinale Roscoe): A review of recent research", Food Chem. Toxicol., 46, 409-420. https://doi.org/ 10.1016/j.fct.2007.09.085.
- Bertolini, D., Cassettari, M. and Salvetti, G. (1982), "The dielectric relaxation time of supercooled water", J. Chem. Phys., 76(6), 3285-3290. https://doi.org/10.1063/1.443323.
- Cheng, Y., Xue, F., Yu, S., Du, S. and Yang, Y. (2021), "Subcritical water extraction of natural products", Molecul., 30(13), 4004. https://doi.org/10.3390/molecules26134004.
- Eikani, M.H., Fereshteh, G., Mehdi, M. and Soosan, R. (2007), "Extraction of volatile oil from cumin (cuminum cyminum L.) with superheated water", J. Food Eng., 30, 255-266. https://doi.org/10.1111/j.1745-4530.2007.00117.x.
- Foudah, A.I., Shakeel, F., Yusufoglu, H.S., Ross, S.A. and Alam, P. (2020), "Simultaneous determination of 6-shogaol and 6-gingerol in various ginger (zingiber officinale roscoe) extracts and commercial formulations using a green RP-HPTLC-Densitometry method", Foods, 9, 1136. https://doi.org/10.3390/foods9081136.
- Ghoreishi, S.M. and Shahrestani, R.G. (2009), "Subcritical water extraction of mannitol from olive leaves", J. Food Eng., 93, 474-481. https://doi.org/10.1016/j.jfoodeng.2009.02.015.
- Hayashi, Y., Matsuda, R. and Poe, R.B. (1995), "Prediction of precision from signal and noise measurement in liquid chromatography: Limit of detection", Chromatogr., 41(1/2), 66-74. https://doi.org/10.1007/BF0227419.
- He, X.G., Bernart, M.W., Lian, L.Z. and Lin, L.Z. (1998), "High-performance liquid chromatographyelectrospray mass spectrometric analysis of pungent constituents of ginger", J. Chromatogr. A, 796, 327-334. https://doi.org/10.1016/S0021-9673(97)01013-3.
- Ko, M.J., Nam, H.H. and Chung, M.S. (2020), "Subcritical water extraction of bioactive compounds from orostachys japonicus A. berger (crassulaceae)", Sci. Rep., 10, 10890. https://doi.org/10.1038/s41598-020-67508-2.
- Kuhn, E.R. (2002), "Water injections in GC: How wet can you get?", LCGC Asia Pacific, 5(3), 30-32.
- Magnusson, B. and O rnemark, U. (2014), Eurachem Guide: The Fitness for Purpose of Analytical Methods - A Laboratory Guide to Method Validation and Related Topics, 2nd Edition, Eurachem, Gembloux, Belgium.
- Markom, M., Hasan, M. and Daud, W.R.W. (2010), "Pressurized water extraction of hydrolysable tannins from phyllanthus niruri linn", Sep. Sci. Technol., 45, 548-553. https://doi.org/10.1080/01496390903485005.
- Md Sarip, M.S., Morad, N.A., Mohamad Ali, N.A., Mohd Yusof, Y.A. and Che Yunus, M.A. (2014), "The kinetics of extraction of the medicinal ginger bioactive compounds using hot compressed water", Sep. Purif. Technol., 124, 141-147. https://doi.org/10.1016/j.seppur.2014.01.008.
- Miller, J.N. (1991), "Basic statistical methods for analytical chemistry part 2. Calibration and regression methods", Analyst., 116, 3-14. https://doi.org/10.1039/an9911600003.
- Mustafa, Z.O., Gogus, F. and Lewis, A.C. (2002), "Subcritical water extraction of essential oils from thymbra spicata", Food Chem., 82, 381-386. https://doi.org/10.1016/S0308-8146(02)00558-7.
- Saim, N. and Osman, R. (2008), "Subcritical water extraction of essential oil from coriander (coriandrum sativu L.) seeds", Malay. J. Anal. Sci., 12, 22-24. https://doi.org/10.1016/j.jfoodeng.2006.05.015.
- Schwertner, H.A. and Rios, D.C. (2007), "High-performance liquid chromatographic analysis of 6-gingerol, 8-gingerol, 10-gingerol, and 6-shogaol in ginger-containing dietary supplements, spices, teas, and beverages", J. Chromatogr. B, 856, 41-47. https://doi.org/10.1016/j.jchromb.2007.05.011.
- Smith, R. M. (1982), "Analysis of the pungent principles of ginger and grains of paradise by high-performance liquid chromatography using electrochemical detection", Chromatogr., 16, 155-157. https://doi.org/10.1007/BF02258887.
- WADA Technical Document (2010), Identification Criteria for Qualitative Assays Incorporating Column Chromotography and Mass Spectrometry 2010, World Anti-Doping Agency (WADA), Montreal, Canada.
- Wohlmuth, H., Leach, D.N., Smith, M.K. and Myers, S.P. (2005), "Gingerol content of diploid and tetraploid clones of ginger (zingiber officinale roscoe)", J. Agric. Food Chem., 53, 5772-5778. https://doi.org/10.1021/jf050435b.
- Zakia, N., Zulfikar, M.A. and Amran, M.A. (2020), "Synthesis and characterization of α-mangostin imprinted polymers and its application for solid phase extraction", Adv. Mater. Res., 9(4), 251-263. https://doi.org/10.12989/amr.2020.9.4.251.