Characterization and Applications of Calcium Ferrites Based Materials Containing Active Oxygen Species

Characterization and application of calcium ferrites based solid solutions containing active oxygen species for catalysts in propylene total and methane partial oxidation has been studied. The calcium ferrite based solutions containing brownmillerite phases showed a structural transition based on the migration of oxide ions at high temperature. The calcium ferrite solution provided two types of active oxygen species due to the existence of the brownmillerite phase. These oxygen species individually played important roles in the propylene and methane oxidation mechanisms.

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Characterization and Applications of Calcium Ferrites Based Materials Containing Active Oxygen Species

Advances in Science and Technology - 11th International Ceramics Congress ◽

10.4028/3-908158-01-x.2169 ◽

2006 ◽

pp. 2169-2175

Author(s):

Daisuke Hirabayashi ◽

Takeshi Yoshikawa ◽

Yoshiki Kawamoto ◽

Kazuhiro Mochizuki ◽

Kenzi Suzuki

Keyword(s):

Active Oxygen Species ◽

Active Oxygen ◽

Oxygen Species ◽

Calcium Ferrites

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Effect of high temperature on active oxygen species, senescence and photosynthetic properties in cucumber leaves

Environmental and Experimental Botany ◽

10.1016/j.envexpbot.2010.09.005 ◽

2011 ◽

Vol 70 (2-3) ◽

pp. 212-216 ◽

Cited By ~ 17

Author(s):

Xiheng Zhao ◽

Yasuyo Nishimura ◽

Yasufumi Fukumoto ◽

Jincai Li

Keyword(s):

High Temperature ◽

Active Oxygen Species ◽

Active Oxygen ◽

Oxygen Species ◽

Photosynthetic Properties

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Characterization and functional properties of new everbearing strawberry (Fragaria x ananasa Duch.) cultivar, ‘Summertiara’ berries

Functional Foods in Health and Disease ◽

10.31989/ffhd.v4i1.27 ◽

2014 ◽

Vol 4 (1) ◽

pp. 1 ◽

Cited By ~ 1

Author(s):

Takeshi Nagai ◽

Misuzu Tamai ◽

Masato Sato ◽

Yasuhiro Tanoue ◽

Norihisa Kai ◽

...

Keyword(s):

Vitamin C ◽

Sensory Evaluation ◽

Functional Properties ◽

Active Oxygen Species ◽

Active Oxygen ◽

Antihypertensive Activity ◽

Oxygen Species ◽

Total Anthocyanins ◽

Strawberry Cultivar ◽

The Stability

Background: In recent years, a new everbearing strawberry cultivar, ‘Summertiara’ was cultivated to supply the strawberries in pre-harvest season from July to October in Japan. For highly research and development of processing of this cultivar, ‘Summertiara’ berries, the objective of this study was to characterize these berries, with relation to chemical parameters, total phenols, total flavonoids, total vitamin C, and total anthocyanins, and was to investigate the solubility and the stability of anthocyanins from the berries. Moreover, the functional properties such as antioxidative activity, active oxygen species scavenging activity, and antihypertensive activity were also evaluated.Methods: Chemical analysis, colour measurement, and sensory evaluation of new everbearing strawberry cultivar, ‘Summertiara’ berries were performed. Next, the solubility of anthocyanins from the berries and stability of these against pH, temperature, and an incandescent lighting were investigated. Moreover, functional properties of the extracts prepared from berries were elucidated using 5 different methods.Results: The contents of water, proteins, lipids, carbohydrates, and ash were the same as those of other cultivar berries. The sugar-acid ratio in the berries was low; these were acidulous. By sensory evaluation, the main factors were vivid red colour, aroma, and acidity. The berries were rich in phenols, flavonoids, vitamin C, and anthocyanins. The anthocyanins of the berries became unstable by heat treatment and light exposures such as visible rays. On the other hand, the extracts prepared from the berries showed the functionalities such as antioxidant activity, active oxygen species scavenging activities, and antihypertensive activity. Conclusions: The strawberry cultivar, ‘Summertiara’ berries were the most suitable for processing ingredient of strawberry-derived products with superior health promoting functionalities.Keywords: Summertiara, everbearing strawberry cultivar, characterization, sensory evaluation, color and storage, functional property

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