Effects of fluorescent and LED irradiation on color fading and pale coloration of salted radish root (takuan-zuke)

2022 ◽  
Author(s):  
Asaka Takahashi ◽  
Tsuyoshi Yamada ◽  
Taito Kobayashi ◽  
Kei Kumakura ◽  
Hiroki Matsuoka
Keyword(s):  
Radish Root ◽  
Color Fading ◽  
Led Irradiation

scholarly journals Modeling and optimization of radish root extract drying as peroxidase source using spouted bed dryer

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Shahrbanoo Hamedi ◽  
M. Mehdi Afsahi ◽  
Ali Riahi-Madvar ◽  
Ali Mohebbi
Keyword(s):  
Kinetic Parameters ◽  
Flow Rate ◽  
Air Flow ◽  
Cost Effective ◽  
Industrial Applications ◽  
Interactive Effects ◽  
Root Extract ◽  
Air Flow Rate ◽  
Spouted Bed ◽  
Radish Root

AbstractThe main advantages of the dried enzymes are the lower cost of storage and longer time of preservation for industrial applications. In this study, the spouted bed dryer was utilized for drying the garden radish (Raphanus sativus L.) root extract as a cost-effective source of the peroxidase enzyme. The response surface methodology (RSM) was used to evaluate the individual and interactive effects of main parameters (the inlet air temperature (T) and the ratio of air flow rate to the minimum spouting air flow rate (Q)) on the residual enzyme activity (REA). The maximum REA of 38.7% was obtained at T = 50 °C and Q = 1.4. To investigate the drying effect on the catalytic activity, the optimum reaction conditions (pH and temperature), as well as kinetic parameters, were investigated for the fresh and dried enzyme extracts (FEE and DEE). The obtained results showed that the optimum pH of DEE was decreased by 12.3% compared to FEE, while the optimum temperature of DEE compared to FEE increased by a factor of 85.7%. Moreover, kinetic parameters, thermal-stability, and shelf life of the enzyme were considerably improved after drying by the spouted bed. Overall, the results confirmed that a spouted bed reactor can be used as a promising method for drying heat-sensitive materials such as peroxidase enzyme.

scholarly journals Application of Light-Emitting Diodes for Improving the Nutritional Quality and Bioactive Compound Levels of Some Crops and Medicinal Plants

Molecules ◽  
2021 ◽  
Vol 26 (5) ◽  
pp. 1477
Author(s):  
Woo-Suk Jung ◽  
Ill-Min Chung ◽  
Myeong Ha Hwang ◽  
Seung-Hyun Kim ◽  
Chang Yeon Yu ◽  
...  
Keyword(s):  
Plant Growth ◽  
In Vitro Culture ◽  
Light Emitting Diodes ◽  
Photosynthetic Pigment ◽  
Antioxidant Properties ◽  
Light Sources ◽  
Light Emitting ◽  
Cell Defense ◽  
Led Irradiation

Light is a key factor that affects phytochemical synthesis and accumulation in plants. Due to limitations of the environment or cultivated land, there is an urgent need to develop indoor cultivation systems to obtain higher yields with increased phytochemical concentrations using convenient light sources. Light-emitting diodes (LEDs) have several advantages, including consumption of lesser power, longer half-life, higher efficacy, and wider variation in the spectral wavelength than traditional light sources; therefore, these devices are preferred for in vitro culture and indoor plant growth. Moreover, LED irradiation of seedlings enhances plant biomass, nutrient and secondary metabolite levels, and antioxidant properties. Specifically, red and blue LED irradiation exerts strong effects on photosynthesis, stomatal functioning, phototropism, photomorphogenesis, and photosynthetic pigment levels. Additionally, ex vitro plantlet development and acclimatization can be enhanced by regulating the spectral properties of LEDs. Applying an appropriate LED spectral wavelength significantly increases antioxidant enzyme activity in plants, thereby enhancing the cell defense system and providing protection from oxidative damage. Since different plant species respond differently to lighting in the cultivation environment, it is necessary to evaluate specific wavebands before large-scale LED application for controlled in vitro plant growth. This review focuses on the most recent advances and applications of LEDs for in vitro culture organogenesis. The mechanisms underlying the production of different phytochemicals, including phenolics, flavonoids, carotenoids, anthocyanins, and antioxidant enzymes, have also been discussed.

Photocatalyzed redox-neutral decarboxylative alkylation of heteroaryl methanamines

2021 ◽  
Vol 23 (2) ◽  
pp. 774-779
Author(s):  
Pengfei Niu ◽  
Jingya Yang ◽  
Yong Yuan ◽  
Yongxin Zhang ◽  
Chenxing Zhou ◽  
...  
Keyword(s):  
Copper Complex ◽  
Coupling Reaction ◽  
Blue Led ◽  
Radical Coupling ◽  
Radical Coupling Reaction ◽  
Led Irradiation

A redox-neutral decarboxylative radical–radical coupling reaction of heteroaryl methylamines with NHPI esters has been developed by employing a copper complex as a photocatalyst with blue LED irradiation.

scholarly journals Inhibitory effect of red LED irradiation on fibroblasts and co-culture of adipose-derived mesenchymal stem cells

Heliyon ◽  
2020 ◽  
Vol 6 (5) ◽  
pp. e03882
Author(s):  
Viviane Theodoro ◽  
Lucas de Oliveira Fujii ◽  
Leticia Dudri Lucke ◽  
Fernanda Oriani Bortolazzo ◽  
Daniela Fernanda Dezotti Silva ◽  
...  
Keyword(s):  
Stem Cells ◽  
Mesenchymal Stem Cells ◽  
Inhibitory Effect ◽  
Red Led ◽  
Led Irradiation

Effect of 630nm LED Irradiation on Cell Culture of Cartilage

2010 ◽  
Vol 143 (2_suppl) ◽  
pp. P162-P162
Author(s):  
Young-Hoon Kim ◽  
Chung-Ku Rhee
Keyword(s):  
Cell Culture ◽  
Led Irradiation

Intermittent spectrometric fluorescence monitoring for 5-ALA-mediated PDD-PDT using an LED irradiation and a VLD excitation in vivo

2011 ◽  
Vol 8 (2) ◽  
pp. 153
Author(s):  
T. Yoshida ◽  
E. Kohno ◽  
M. Kanada ◽  
K. Inoue ◽  
T. Sakurai ◽  
...  
Keyword(s):  
Led Irradiation
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