Antioxidative Capacity of the Degradation Products of Glucuronic and Galacturonic Acid from Subcritical Water Treatment

2011 ◽  
Vol 34 (9) ◽  
pp. 1514-1520 ◽  
Author(s):  
R. Wang ◽  
T. L. Neoh ◽  
T. Kobayashi ◽  
S. Adachi
Keyword(s):  
Water Treatment ◽  
Galacturonic Acid ◽  
Subcritical Water ◽  
Degradation Products ◽  
Antioxidative Capacity

Recovery of Mint Essential Oil through Pressure-releasing Distillation during Subcritical Water Treatment

2019 ◽  
Vol 25 (6) ◽  
pp. 793-799 ◽  
Author(s):  
Tai-Ying Chiou ◽  
Masaaki Konishi ◽  
Shiori Nomura ◽  
Yasutaka Shimotori ◽  
Miki Murata ◽  
...  
Keyword(s):  
Water Treatment ◽  
Essential Oil ◽  
Subcritical Water

Characteristics of Japanese Mint Extracts Obtained by Subcritical-water Treatment

2019 ◽  
Vol 25 (5) ◽  
pp. 695-703 ◽  
Author(s):  
Shiori Nomura ◽  
Wei-Ju Lee ◽  
Masaaki Konishi ◽  
Tohru Saitoh ◽  
Miki Murata ◽  
...  
Keyword(s):  
Water Treatment ◽  
Subcritical Water ◽  
Japanese Mint

scholarly journals Properties of Extract from Okara by Its Subcritical Water Treatment

2013 ◽  
Vol 16 (5) ◽  
pp. 974-982 ◽  
Author(s):  
Jintana Wiboonsirikul ◽  
Masayuki Mori ◽  
Pramote Khuwijitjaru ◽  
Shuji Adachi
Keyword(s):  
Water Treatment ◽  
Subcritical Water

scholarly journals Structural Changes in Milled Wood Lignin (MWL) of Chinese Quince (Chaenomeles sinensis) Fruit Subjected to Subcritical Water Treatment

Molecules ◽  
2021 ◽  
Vol 26 (2) ◽  
pp. 398
Author(s):  
Wen-Yue Wang ◽  
Zhao Qin ◽  
Hua-Min Liu ◽  
Xue-De Wang ◽  
Jing-Hao Gao ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Water Treatment ◽  
Quantum Coherence ◽  
Structural Changes ◽  
31P Nmr ◽  
Subcritical Water ◽  
Water Extraction ◽  
Subcritical Water Extraction ◽  
Milled Wood Lignin ◽  
Chinese Quince

Subcritical water treatment has received considerable attention due to its cost effectiveness and environmentally friendly properties. In this investigation, Chinese quince fruits were submitted to subcritical water treatment (130, 150, and 170 °C), and the influence of treatments on the structure of milled wood lignin (MWL) was evaluated. Structural properties of these lignin samples (UL, L130, L150, and L170) were investigated by high-performance anion exchange chromatography (HPAEC), FT-IR, gel permeation chromatography (GPC), TGA, pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS), 2D-Heteronculear Single Quantum Coherence (HSQC) -NMR, and 31P-NMR. The carbohydrate analysis showed that xylose in the samples increased significantly with higher temperature, and according to molecular weight and thermal analysis, the MWLs of the pretreated residues have higher thermal stability with increased molecular weight. The spectra of 2D-NMR and 31P-NMR demonstrated that the chemical linkages in the MWLs were mainly β-O-4′ ether bonds, β-5′ and β-β′, and the units were principally G- S- H- type with small amounts of ferulic acids; these results are consistent with the results of Py-GC/MS analysis. It is believed that understanding the structural changes in MWL caused by subcritical water treatment will contribute to understanding the mechanism of subcritical water extraction, which in turn will provide a theoretical basis for developing the technology of subcritical water extraction.

scholarly journals Antioxidant Characteristics of Extracts from Cereal Residues by Their Subcritical Water Treatment

2012 ◽  
Vol 61 (9) ◽  
pp. 465-468 ◽  
Author(s):  
Yusuke Murayama ◽  
Jintana Wiboonsirikul ◽  
Pramote Khuwijitjaru ◽  
Takashi Kobayashi ◽  
Shuji Adachi
Keyword(s):  
Water Treatment ◽  
Subcritical Water ◽  
Antioxidant Characteristics ◽  
Cereal Residues

Hydrolysis of bamboo biomass by subcritical water treatment

2015 ◽  
Vol 191 ◽  
pp. 244-252 ◽  
Author(s):  
Mood Mohan ◽  
Tamal Banerjee ◽  
Vaibhav V. Goud
Keyword(s):  
Water Treatment ◽  
Subcritical Water ◽  
Hydrolysis Of

Perfluorooctane sulphonate and perfluorooctanoic acid in drinking and environmental waters

2009 ◽  
Vol 367 (1904) ◽  
pp. 4119-4136 ◽  
Author(s):  
Paul C. Rumsby ◽  
Clare L. McLaughlin ◽  
Tom Hall
Keyword(s):  
Drinking Water ◽  
Activated Carbon ◽  
Water Treatment ◽  
Degradation Products ◽  
Drinking Water Treatment ◽  
Perfluorooctanoic Acid ◽  
Consumer Products ◽  
Environmental Waters ◽  
Perfluorinated Chemicals ◽  
Low Levels

Perfluorooctane sulphonate (PFOS) and perfluorooctanoic acid (PFOA) are chemicals that have been used for many years as surfactants in a variety of industrial and consumer products. Owing to their persistent, bioaccumulative and toxic (PBT) characteristics, PFOS has been phased out by its principal producer and the use of PFOA has been reduced. This PBT potential and a number of pollution incidents have led in recent years to an increase in studies surveying the concentrations of PFOS and PFOA in environmental waters worldwide. This paper reviews the results of these studies, as well as the monitoring that was conducted after the pollution incidents. The results of surveys suggest that PFOS and PFOA are found in environmental waters worldwide at low levels. In general, these levels are below health-based values set by international authoritative bodies for drinking water. There have been limited measurements of these chemicals in drinking water, but again these are below health-based values, except in some cases following pollution incidents. Monitoring studies suggested that where PFOS and PFOA were detected, they were at similar levels in both source and drinking water, suggesting that drinking water treatment does not remove these chemicals. However, new data show that PFOS and PFOA are effectively removed by granular activated carbon absorbers in practice. Further research is required on the newer perfluorinated chemicals that appear to be safer, but their degradation products have not as yet been fully studied.

scholarly journals Astaxanthin stability and color change of krill during subcritical water treatment

2017 ◽  
Vol 54 (10) ◽  
pp. 3065-3072 ◽  
Author(s):  
Intira Koomyart ◽  
Hironori Nagamizu ◽  
Pramote Khuwijitjaru ◽  
Takashi Kobayashi ◽  
Hirokazu Shiga ◽  
...  
Keyword(s):  
Water Treatment ◽  
Color Change ◽  
Subcritical Water
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