Exogenous salicylic acid and 24-epi-brassinolide improve antioxidant capacity and secondary metabolites of Brassica nigra

2020 ◽  
Vol 26 ◽  
pp. 101636 ◽  
Author(s):  
Kazem Ghassemi-Golezani ◽  
Nasim Hassanzadeh ◽  
Muhammad-Reza Shakiba ◽  
Behrooz Esmaeilpour
Keyword(s):  
Salicylic Acid ◽  
Secondary Metabolites ◽  
Antioxidant Capacity ◽  
Brassica Nigra ◽  
Exogenous Salicylic Acid

scholarly journals Study on the Effect of Exogenous Salicylic Acid on Algae Growth in the Environment

2020 ◽  
Vol 165 ◽  
pp. 02001
Author(s):  
Qiuyang Xu ◽  
Meixue Shi ◽  
Shaohua Wang ◽  
Yuchun Qing
Keyword(s):  
Salicylic Acid ◽  
Secondary Metabolites ◽  
Natural Environment ◽  
Algal Blooms ◽  
Environmental Safety ◽  
Signal Molecule ◽  
Synthetic Drugs ◽  
Algae Growth ◽  
The Common ◽  
Exogenous Salicylic Acid

With the development of industry, synthetic drugs and their secondary metabolites bring some hidden dangers to environmental safety. As an excellent drug, salicylic acid is widely used in cardiovascular drugs, industrial dyes, skin care and acne products, etc. Therefore, it is possible to detect salicylic acid molecules, its derivatives or secondary metabolites in the natural environment. It should be noted that salicylic acid, as an endogenous signal molecule, can greatly affect plant growth. In this study, the common algal Spirogyra in fresh water was taken as the research object. The effects of exogenous salicylic acid on the growth of Spirogyra were analyzed through the changes of chlorophyll content and plant cross section during the growth of Spirogyra. It is found that the concentration of salicylic acid in the natural environment generally promotes the development of algae and improves their resistance to environmental stress. Therefore, as a possible correlation index of algal blooms, it deserves our attention.

scholarly journals Residuality of exogenous salicylic acid and effect on catalase activity and total antioxidant capacity in tomato leaves

2015 ◽  
Vol 10 (41) ◽  
pp. 3893-3900
Author(s):  
Guzman Tellez Enrique ◽  
Benavides Mendoza Adalberto ◽  
Flores Olivas Alberto ◽  
Cabrera De la Fuente Marcelino ◽  
Diaz Montenegro Daniel
Keyword(s):  
Salicylic Acid ◽  
Antioxidant Capacity ◽  
Catalase Activity ◽  
Total Antioxidant Capacity ◽  
Total Antioxidant ◽  
Exogenous Salicylic Acid

scholarly journals Evaluación de la capacidad antioxidante y metabolitos secundarios de extractos de dieciséis plantas medicinales / Evaluation of antioxidant capacity and secondary metabolites of sixteen medicinal plants extracts

Ciencia Unemi ◽  
2016 ◽  
Vol 9 (20) ◽  
pp. 29 ◽  
Author(s):  
Ana Echavarria ◽  
Haydelba D'Armas Regnault ◽  
Nubia Lisbeth ◽  
Lisbeth Matute ◽  
Carmita Jaramillo ◽  
...  
Keyword(s):  
Secondary Metabolites ◽  
Antioxidant Capacity ◽  
Radical Scavenging ◽  
Dpph Radical ◽  
Melissa Officinalis ◽  
Artemisia Absinthium ◽  
Borago Officinalis ◽  
Bougainvillea Spectabilis ◽  
Parietaria Officinalis ◽  
Cnidoscolus Chayamansa

El presente estudio evaluó la capacidad antioxidante de los extractos de dieciséis plantas medicinales: escoba amarga (Parthenium hysterophons), ajenjo (Artemisia absinthium), guarumo (t), chaya (Cnidoscolus chayamansa), borraja (Borago officinalis), balsa (Ochroma sp.), linaza (Linum usitatissimum), hierba Luisa (Cymbopogon citratus), toronjil (Melissa officinalis), buganvilla (Bougainvillea spectabilis), alcachofa (Cynara scolymus), guaviduca (Piper carpunya), altamisa (Ambrosia cumanensis), diente de león (Taxacum officinales), buscapina (Parietaria officinalis) y moringa (Moringa oleifera). Para ello, se usó el método DPPH (radical 1,1-difenil-2-picrilhidrazil); además, se realizaron ensayos de reconocimiento de metabolitos secundarios a fin de obtener los primeros indicios de compuestos de interés fitoquímico. La actividad captadora de radicales libres de los extractos se expresó como valor de IC50 (μg/mL) (cantidad necesaria para inhibir la formación de radicales DPPH en un 50%). El valor bajo de IC50 refleja mejor acción eliminadora de radicales libres. Aunque la mayoría de las muestras evaluadas mostraron buena capacidad antioxidante con este método (DPPH), los ensayos de los extractos hidro-alcohólicos demuestran que la alcachofa (IC50 9,89 μg/mL), moringa (IC50 11,4 μg/mL) y borraja (IC50 14,0 μg/mL) presentaron mayor capacidad antioxidante. Mediante las pruebas químicas de caracterización, se detectó la presencia de flavonoides, taninos, triterpenos, alcaloides y saponinas en la mayoría de las especies analizadas (aproximadamente 56-69%); tan sólo un 20% de las mismas mostró la presencia de polifenoles, glucósidos cianogénicos, lactonas, cumarinas, esteroles y antraquinonas. Según los resultados, se podría considerar a estas plantas como fuentes prometedoras de metabolitos secundarios con actividad antioxidante.  ABSTRACTThis study evaluated the antioxidant capacity of sixteen medicinal plants: Escoba amarga (Parthenium hysterophons), ajenjo (Artemisia absinthium), guarumo (Cecropia obtusifolia), chaya (Cnidoscolus chayamansa), borraja (Borago officinalis), balsa (Ochroma sp.), linaza (Linum usitatissimum), hierba Luisa (Cymbopogon citratus), toronjil (Melissa officinalis), buganvilla (Bougainvillea spectabilis), alcachofa (Cynara scolymus), guaviduca (Piper carpunya), altamisa (Ambrosia cumanensis), diente de León (Taxacum officinales), buscapina (Parietaria officinalis)and moringa (Moringa oleifera). For this, the DPPH (radical 1, 1-difenil-2-picrilhidrazil) method was used; furthermore, recognition assays of secondary metabolites were performed, in order to obtain the first signs of phytochemical compounds of interest. The free radical scavenging activity of the extracts was expressed as IC50 value (g/mL) (necessary amount to inhibit the formation of 50% of DPPH radical). The low value of IC50 reflects better free radical scavenging action. Although most of the samples tested showed good antioxidant capacity with this method (DPPH), tests of hydroalcoholic extracts show that alcachofa (IC50 9.89 mg/mL), moringa (IC50 11.4 mg/mL) and borraja (IC50 14.0 mg/mL) were those with higher antioxidant capacity. Through chemical characterization tests, the presence of flavonoids, tannins, triterpenes, alkaloids and saponins were detected in most of the analyzed species (approximately 56-69%); only 20% of them showed the presence of polyphenols, cyanogenic glycosides, lactones, coumarins, anthraquinones and sterols. According to the results obtained, these plants might be considered as promising sources of secondary metabolites with antioxidant activity.

scholarly journals Exogenous salicylic acid and cytokinin alter sugar accumulation, antioxidants and membrane stability of faba bean

2018 ◽  
Vol 69 (1) ◽  
pp. 86-96 ◽  
Author(s):  
Samira Samea-Andabjadid ◽  
Kazem Ghassemi-Golezani ◽  
Safar Nasrollahzadeh ◽  
Nosratollah Najafi
Keyword(s):  
Salicylic Acid ◽  
Faba Bean ◽  
Membrane Stability ◽  
Sugar Accumulation ◽  
Exogenous Salicylic Acid
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