Antioxidant enzyme activities and exogenous ascorbic acid treatment of ‘Williams’ banana during long-term cold storage stress

2018 ◽  
Vol 234 ◽  
pp. 210-219 ◽  
Author(s):  
A.A. Lo’ay ◽  
A.Y. EL-Khateeb
Keyword(s):  
Ascorbic Acid ◽  
Antioxidant Enzyme ◽  
Cold Storage ◽  
Enzyme Activities ◽  
Acid Treatment ◽  
Antioxidant Enzyme Activities

scholarly journals Postharvest Treatment of ‘Florida Prince’ Peaches with a Calcium Nanoparticle–Ascorbic Acid Mixture during Cold Storage and Its Effect on Antioxidant Enzyme Activities

Horticulturae ◽  
2021 ◽  
Vol 7 (11) ◽  
pp. 499
Author(s):  
Lo’ay A. A. ◽  
Hamed Ismail ◽  
Hazem S. Kassem
Keyword(s):  
Ascorbic Acid ◽  
Antioxidant Enzyme ◽  
Cold Storage ◽  
Enzyme Activities ◽  
Chilling Injury ◽  
Ascorbate Oxidase ◽  
Acid Mixture ◽  
Antioxidant Enzyme Activities ◽  
Ion Leakage ◽  
Physiological Disorder

Chilling injury (CI) is a physiological disorder resulting from low storage temperatures that affects the fruit quality and marketing of the ‘Florida Prince’ peach. In this study, the exogenous application of a mixture of calcium nanoparticles (CaNPs) and ascorbic acid was found to significantly alleviate the symptoms of CI in peaches during cold storage. Fruits were treated with CaNPs plus different concentrations of ascorbic acid (AA; 0, 3, 6, and 9 mM). Peaches were immersed in CaNP–AA for 15 min before being stored at 4 ± 1 °C and 95 ± 1% RH for 30 days. We observed that the 9 mM CaNP–AA treatment lowered the values for the CI index, ion leakage, and malondialdehyde (MDA) content and increased antioxidant enzyme activities (AEAs), such as for ascorbate oxidase (APX), catalase (CAT), superoxide dismutase (SOD), and glutathione reductase (GR). Furthermore, the treatment reduced the accumulation of both H2O2 and O2•− and increased the level of DPPH reduction throughout the duration of cold storage. Our results suggest that 9 mM CaNP–AA treatment suppresses the incidence of CI in peach fruit throughout cold storage, possibly because 9 mM CaNP–AA is at least partly involved in enhancing the antioxidant system via its effect on antioxidant substances. The results indicate that applying the 9 mM CaNP–AA treatment afforded peaches with enhanced tolerance against cold storage stress.

The effect of a long term (6 months) treatment with (−)deprenyl on antioxidant enzyme activities in selective brain regions in old female fischer 344 rats

1994 ◽  
Vol 47 (8) ◽  
pp. 1333-1338 ◽  
Author(s):  
Maria Cristina Carrillo ◽  
Kenichi Kitani ◽  
Setsuko Kanai ◽  
Yuko Sato ◽  
Kyoko Miyasaka ◽  
...  
Keyword(s):  
Antioxidant Enzyme ◽  
Enzyme Activities ◽  
Brain Regions ◽  
Antioxidant Enzyme Activities ◽  
Fischer 344 Rats ◽  
Fischer 344

Respiration, hydrogen peroxide levels and antioxidant enzyme activities during cold storage of zucchini squash fruit

2009 ◽  
Vol 52 (1) ◽  
pp. 16-23 ◽  
Author(s):  
Stefano Gualanduzzi ◽  
Elena Baraldi ◽  
Ilaria Braschi ◽  
Francesco Carnevali ◽  
Carlo Emanuele Gessa ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Antioxidant Enzyme ◽  
Cold Storage ◽  
Enzyme Activities ◽  
Antioxidant Enzyme Activities
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