Depth Direction Analysis of Polystyrene Surface Modified by Active Oxygen Species Generated by Ultraviolet Irradiation

2020 ◽  
Vol 49 (4) ◽  
pp. 350-353 ◽  
Author(s):  
Kazuki Hosoya ◽  
Kei Oya ◽  
Satoru Iwamori
Keyword(s):  
Ultraviolet Irradiation ◽  
Active Oxygen Species ◽  
Active Oxygen ◽  
Oxygen Species ◽  
Polystyrene Surface ◽  
Depth Direction ◽  
Surface Modified

scholarly journals Investigation of a Sterilization System Using Active Oxygen Species Generated by Ultraviolet Irradiation

2015 ◽  
Vol 20 (1) ◽  
pp. 11-18 ◽  
Author(s):  
KIYOSHI YOSHINO ◽  
HIROYUKI MATSUMOTO ◽  
TATSUYUKI IWASAKI ◽  
SHINOBU KINOSHITA ◽  
KAZUTOSHI NODA ◽  
...  
Keyword(s):  
Ultraviolet Irradiation ◽  
Active Oxygen Species ◽  
Active Oxygen ◽  
Oxygen Species

scholarly journals Chemical conversion of self-assembled hexadecyl monolayers with active oxygen species generated by vacuum ultraviolet irradiation in an atmospheric environment

Soft Matter ◽  
2015 ◽  
Vol 11 (28) ◽  
pp. 5678-5687 ◽  
Author(s):  
Ahmed I. A. Soliman ◽  
Takashi Ichii ◽  
Toru Utsunomiya ◽  
Hiroyuki Sugimura
Keyword(s):  
Ultraviolet Irradiation ◽  
Vacuum Ultraviolet ◽  
Chemical Constituents ◽  
Active Oxygen Species ◽  
Chemical Conversion ◽  
Active Oxygen ◽  
Atmospheric Environment ◽  
Oxygen Species ◽  
Assembled Monolayers ◽  
Self Assembled

We followed the chemical constituents, surface properties, and morphology of the photo-modified alkyl self-assembled monolayers, which were exposed to the active oxygen species generated from the vacuum ultraviolet irradiation.

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

2014 ◽  
Vol 4 (1) ◽  
pp. 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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