Results 41 to 50 of about 4,932 (159)
Solubility and degradation of paracetamol in subcritical water [PDF]
Journal of the Serbian Chemical Society, 2017 In this study, solubility and degradation of paracetamol were examined using subcritical water. Effect of temperature and static time was investigated during solubility process in subcritical water at constant pressure (50 bar).
Emire Zuhal +3 more
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Degradation Kinetics of Glucuronic Acid in Subcritical Water [PDF]
Bioscience, Biotechnology, and Biochemistry, 2010 The degradation kinetics of glucuronic acid (GlcA) under subcritical conditions from 160 to 200 degrees C was studied in a continuous tubular reactor. The formation of glucuronolactone (GlcL) during the treatment of GlcA in subcritical water was substantiated by ESI-TOF-MS and (1)H NMR.
WANG, Rongchun +6 more
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Subcritical water technology for extraction phytochemical compound
Journal of Medicinal Plants, 2017 To reduce the use of organic solvent, Subcritical water extraction has become a popular green extraction technology for production of phytochemicals from a variety of biomasses. Phytochemicals, such as phenolic component, essential oils and carbohydrates,
S khoshnoudinia, M Niakousari, Z Tahsiri
doaj
Isomerization of Hexoses in Subcritical Water
Food Science and Technology Research, 2007 Mannose, fructose and glucose were treated in subcritical water at 220°C, and the disappearance of each substrate and formation of other hexoses were observed at various residence times in a tubular reactor. Isomerization of mannose to fructose occurred most frequently, followed by mannose to glucose; no isomerization of glucose to mannose was observed.
Chisako USUKI +2 more
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Acta Chimica Slovenica, 2019 In the present study, subcritical water was used for extraction of bioactive compounds of Symphytum officinale root. Temperature (120–200 °C), extraction time (10–30 min) and HCl concentration in extraction solvent (0–1.5%) were investigated as ...
Jelena Vladić +6 more
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Separation and Analysis of Aspirin and Metformin HCl Using Green Subcritical Water Chromatography
Molecules, 2018 Organic solvents are widely used in pharmaceutical and chemical industry for chromatographic separations. In recent years, subcritical water chromatography (SBWC) has shown ability in replacing hazardous organic solvents used in traditional high ...
Ninad Doctor, Yu Yang
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Chimica Techno Acta, 2021 The total phenol content and the anti-acetylcholinesterase activity were compared in olive leaf (OL) extracts obtained using both subcritical water extraction (SbWE) and conventional solvent extraction (ethanol-water).
S. S. Khizrieva +3 more
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Subcritical Water Extraction and Neoformation of Antioxidants
, 2017 Subcritical water extraction (SWE) is a green extraction technology that represents an alternative to conventional extraction using organic solvents for isolating bioactive compounds (mainly antioxidants) from different raw materials. In this chapter, the fundamentals of the technique, the instrumental requirements, and some relevant applications of ...
Gilbert-López, Bienvenida +4 more
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Corrosion Behavior of Alloy625 in Sub / Supercritical Water-Phosphate Environment [PDF]
Cailiao BaohuCorrosion issues limit the development of sub / supercritical water oxidation technology.In particular， phosphates will form lowmelting-point mixed molten salts in a supercritical water environment，creating a more severe corrosion environment，and how to ...
ZHU Riguang, TANG Xingying, TAN Xinyu, CHEN Jiquan, TAN Zu'an, LIN Zitao, CHEN Sisi, REN Pengwei
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Chemical Engineering Transactions, 2017 Subcritical water and supercritical CO2 extraction of phytochemical compounds from Eucheuma cottonii (E. cottonii) and Gracilaria sp. have been investigated at various temperatures and pressures in a semi-batch extractor.
S. Machmudah +3 more
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