scholarly journals Evaluation of the use of reactive oxygen species (ROS) generated through oxyion® technology in strawberry (Fragaria × ananassa (Duchesne ex Weston) Duchesne ex Rozier cv. Monterrey) storage

2018 ◽  
Vol 67 (2) ◽  
pp. 223-230 ◽  
Author(s):  
Rafael Andres Ramirez ◽  
Alejandro Jimenez ◽  
Claudia Patricia Pérez Rodriguez ◽  
Laura Restrepo
Keyword(s):  
Reactive Oxygen Species ◽  
Reactive Oxygen ◽  
Fragaria X Ananassa ◽  
Oxygen Species ◽  
Fragaria Ananassa

Las especies reactivas de oxigeno (ROS) tienen un papel primordial en los procesos de estrés oxidativos a nivel biológico. En la mayoría de los casos la presencia de dichas especies químicas es indeseable debido al impacto que tienen sobre tejidos y estructuras celulares, sin embargo, sus efectos pueden ser empleados para controlar la incidencia de microorganismos responsables de procesos de deterioro en frutas y hortalizas. En el presente estudio se estudió la viabilidad de compaginar el almacenamiento a baja temperatura con la presencia de especies reactivas de oxigeno generadas empleando la tecnología Oxyion® para el control del proceso de deterioro en fresa (Fragaria X ananassa). Los tratamientos empleados fueron almacenamiento control (4°C± 2°C sin Oxyion®) y almacenamiento ROS (4°C± 2°C con Oxyion®), para dos categorías del producto de acuerdo con el peso y estado de maduración según la NTC 4103 (ICONTEC, 1997). Las variables fueron monitoreadas con puntos de medición en 1, 3, 5, 7, 10 y 15 días después de cosecha en porcentaje de pérdida de masa, sólidos solubles, intensidad respiratoria, acidez, resistencia, color y etileno. Adicionalmente se analizaron los efectos y las interacciones significativas entre variables. Al concluir el estudio, se determinó que la tecnología Oxyion® presentó diferencias estadísticamente significativas en comparación con el control, e indujo a una menor pérdida de peso, mayor resistencia y menor producción exógena de etileno, prolongando la vida útil de la fresa cv. Monterrey en un 40% durante almacenamiento, adicionalmente las pérdidas por acción de microorganismos presentes en la superficie de las fresas se redujeron de forma considerable, generando un precedente positivo en los procesos de almacenamiento y conservación de frutas para Colombia.

scholarly journals Aktivitas Antioksidan Jus Stroberi (Fragaria ananassa Duchessne) Terhadap Kadar SGPT, SGOT dan MDA pada Tikus Jantan Galur Wistar yang Diinduksi Isoniazid

2021 ◽  
Vol 21 (1) ◽  
pp. 17
Author(s):  
Ebta Narasukma Anggraeny ◽  
Endang Sri Sunarsih ◽  
Patricia Sanggita Listyoputri Wibowo ◽  
Novi Elisa
Keyword(s):  
Reactive Oxygen Species ◽  
Free Radicals ◽  
Reactive Oxygen ◽  
The Body ◽  
Male Rats ◽  
Oxygen Species ◽  
Fragaria Ananassa ◽  
Body Weight Data ◽  
High Level ◽  
Strawberry Juice

ABSTRAKIsoniazid adalah obat anti tuberkulosis yang digunakan baik sebagai monoterapi atau kombinasi. Penggunaan isoniazid dalam waktu lama dapat menyebabkan hepatotoksik. Hepatotoksik disebabkan oleh hasil metabolisme isoniazid di hepar berupa hidrazin dan asetilhidrazin. Radikal bebas tersebut yang menyebabkan tingginya reactive oxygen species (ROS) didalam tubuh. Tingginya radikal bebas menyebabkan peningkatan kadar SGPT dan SGOT yang merupakan indikator adanya kerusakan hepar. Tingginya radikal bebas dalam tubuh dapat dilihat dari paramter MDA. Hal tersebut dapat diatasi dengan pemberian antioksidan eksogen seperti jus stroberi (Fragaria ananassa Duchessne). Tujuan penelitian ini untuk mengetahui skrinning fitokimia jus stroberi dan pengaruh pemberian jus stroberi terhadap kadar SGPT, SGOT dan MDA pada tikus yang diinduksi Isoniazid. Perlakuan diberikan  selama 14 hari dengan pembagian kelompok yaitu kontrol normal, kontrol negatif, kontrol positif, dosis 3g/kgBB, 6g/kgBB, dan 9g/kgBB. Pengambilan data dilakukan pada hari 1, hari 15, dan hari 29. Hasil penelitian dapat disimpulkan bahwa jus stroberi dapat menurunkan kadar SGPT, SGOT dan MDA pada tikus yang diinduksi isoniazid dengan dosis efektif sebesar 3g/kgBB tikus.Kata kunci: Isoniazid;  jus stroberi; MDA; SGPT; SGOT;Effect of Strawberry Juice (Fragraria ananassa Duchessne) against SGPT, SGOT and MDA levels in Isoniazide-Induced Wistar Male Rats ABSTRACTIsoniazid is an anti-tuberculosis drug that is used either as monotherapy or in combination. Prolonged use of isoniazid can cause hepatotoxicity. Hepatotoxicity is caused by the hepatic isoniazid metabolism in the form of hydrazine and acetylhydrazine. These free radicals cause high reactive oxygen species (ROS) in the body. The high level of free radicals causes an increase in SGPT and SGOT levels, which are indicators of liver damage. The high level of free radicals in the body can be seen from the MDA parameter. This can be overcome by giving exogenous antioxidants such as strawberry juice (Fragaria ananassa Duchessne). The purpose of this study was to determine the phytochemical screening of strawberry juice and the effect of giving strawberry juice on the levels of SGPT, SGOT and MDA in rats induced by Isoniazid. The treatment was given for 14 days divided into groups, namely normal control, negative control, positive control, dose of 3g / kg, 6g / kg, and 9g / kg of body weight. Data were collected on day 1, day 15, and day 29. The results of this study concluded that strawberry juice can reduce levels of SGPT, SGOT and MDA in isoniazid-induced rats with an effective dose of 3 g/kgBW rats.Keywords: Isoniazid; Strawberry juice; MDA; SGPT; SGOT

Mitochondria as a source of reactive oxygen species

2009 ◽  
pp. c3 ◽  
Author(s):  
Helena M. Cochemé ◽  
Michael P. Murphy
Keyword(s):  
Reactive Oxygen Species ◽  
Reactive Oxygen ◽  
Oxygen Species

Clinical aspects of reactive oxygen and nitrogen species

2004 ◽  
Vol 71 ◽  
pp. 121-133 ◽  
Author(s):  
Ascan Warnholtz ◽  
Maria Wendt ◽  
Michael August ◽  
Thomas Münzel
Keyword(s):  
Oxidative Stress ◽  
Reactive Oxygen Species ◽  
Risk Factor ◽  
Endothelial Dysfunction ◽  
Vascular Tissue ◽  
Rapid Development ◽  
Reactive Oxygen ◽  
Clinical Aspects ◽  
No Production ◽  
Oxygen Species

Endothelial dysfunction in the setting of cardiovascular risk factors, such as hypercholesterolaemia, hypertension, diabetes mellitus and chronic smoking, as well as in the setting of heart failure, has been shown to be at least partly dependent on the production of reactive oxygen species in endothelial and/or smooth muscle cells and the adventitia, and the subsequent decrease in vascular bioavailability of NO. Superoxide-producing enzymes involved in increased oxidative stress within vascular tissue include NAD(P)H-oxidase, xanthine oxidase and endothelial nitric oxide synthase in an uncoupled state. Recent studies indicate that endothelial dysfunction of peripheral and coronary resistance and conductance vessels represents a strong and independent risk factor for future cardiovascular events. Ways to reduce endothelial dysfunction include risk-factor modification and treatment with substances that have been shown to reduce oxidative stress and, simultaneously, to stimulate endothelial NO production, such as inhibitors of angiotensin-converting enzyme or the statins. In contrast, in conditions where increased production of reactive oxygen species, such as superoxide, in vascular tissue is established, treatment with NO, e.g. via administration of nitroglycerin, results in a rapid development of endothelial dysfunction, which may worsen the prognosis in patients with established coronary artery disease.

Fas ligand expression in rat kupffer cells in response to lipopolysaccharide is mediated by reactive oxygen species

2001 ◽  
Vol 120 (5) ◽  
pp. A361-A361
Author(s):  
K UCHIKURA ◽  
T WADA ◽  
Z SUN ◽  
S HOSHINO ◽  
G BULKLEY ◽  
...  
Keyword(s):  
Reactive Oxygen Species ◽  
Kupffer Cells ◽  
Fas Ligand ◽  
Reactive Oxygen ◽  
Oxygen Species ◽  
Ligand Expression
Sign in / Sign up

Export Citation Format

Share Document