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Start Over Descriptor "Subcritical water extraction" Journal food science and biotechnology
10 results on '"Subcritical water extraction"'

2. Thermal decomposition and oxidation of β-caryophyllene in black pepper during subcritical water extraction

Author

Ha-Yeon Lee and Min-Jung Ko

Subjects
Black pepper, Caryophyllene, Bicyclic molecule, Chemistry, Extraction (chemistry), Thermal decomposition, Water extraction, Sesquiterpene, Applied Microbiology and Biotechnology, chemistry.chemical_compound, Subcritical water extraction, Yield (chemistry), Pepper, Oxidation, Food Science, Biotechnology, Nuclear chemistry, Research Article
Abstract

Subcritical water extraction is an efficient technique for extracting components from various plants by changing the polarity of water. β-caryophyllene is a natural bicyclic sesquiterpene with the highest content found among black pepper essential oils. In this study, the efficiency of extraction and yield of β-caryophyllene from black pepper were investigated using a subcritical water extraction technique. The optimal conditions of β-caryophyllene (1.19 ± 0.38 mg/g), and caryophyllene oxide (0.82 ± 0.38 mg/g) were obtained from black pepper under extraction conditions of 170 °C/10 min, and 200 °C/15 min, respectively. As the extraction temperature was increased, β-caryophyllene oxidation proceeded and the extraction content of caryophyllene oxide increased. It is anticipated that both β-caryophyllene and caryophyllene oxide with high biological activity can be used to selectively extract compounds using subcritical water extraction, which will be helpful in industrial applications.

Published
2021

8. Pilot-scale subcritical-water extraction of nodakenin and decursin from Angelica gigas Nakai.

Author

Ko MJ, Kwon MR, and Chung MS

Abstract

Active components were extracted from Angelica gigas Nakai by subcritical-water extraction (SWE) with the purpose of determining how the extraction conditions affect the SWE of antioxidant properties and active components (nodakenin and decursin), and to compare pilot-scale SWE (8 L) and conventional extraction methods. The extraction yields of nodakenin and decursin in the pilot-scale system were highest at 150 °C for 10 min and 190 °C for 15 min, respectively. The extraction yield of decursin increased as the stirring speed was increased to 200-250 rpm. Pearson's correlation indicated that the radical-scavenging activities using DPPH and ABTS assays were more sensitive to the Maillard reaction (R 2  = 0.822 and 0.933, respectively) than to the total phenolic contents (R 2  = 0.486 and 0.724, respectively). The extraction yield of decursin was higher when using conventional extraction methods than for SWE., Competing Interests: Conflict of interestAll authors declare that they have no conflict of interest., (© The Korean Society of Food Science and Technology 2019.)

Published
2019
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