scholarly journals Potentiometric determination of antioxidant activity of extracts of Calendula Officinalis L. plants under the influence of growth biostimulants

2017 ◽  
Vol 0 (6 (9)) ◽  
pp. 10-13 ◽  
Author(s):  
Oksana Lupak ◽  
Halyna Kovalchuk ◽  
Halyna Antonyak
Keyword(s):  
Antioxidant Activity ◽  
Potentiometric Determination ◽  
Calendula Officinalis ◽  
Calendula Officinalis L

scholarly journals From the Field to the Pot: Phytochemical and Functional Analyses of Calendula officinalis L. Flower for Incorporation in an Organic Yogurt

Antioxidants ◽  
2019 ◽  
Vol 8 (11) ◽  
pp. 559 ◽  
Author(s):  
Bragueto Escher ◽  
Cardoso Borges ◽  
Sousa Santos ◽  
Mendanha Cruz ◽  
Boscacci Marques ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Biological Activities ◽  
Total Phenolic ◽  
Antioxidant Compounds ◽  
Calendula Officinalis ◽  
Antioxidant Power ◽  
Ferric Reducing Antioxidant Power ◽  
Functional Analyses ◽  
Calendula Officinalis L

Edible flowers have been used as ingredients because of their biological activities, taste, and overall appearance. This research was aimed to characterize the chemical composition and in vitro antioxidant activity of the marigold flower (Calendula officinalis L.) extracted with different proportions of water and ethyl alcohol, and the lyophilized extract with higher content of antioxidant compounds was incorporated into an organic yogurt. Results showed that the hydroalcoholic extract (50:50 v/v) presented the highest total phenolic content (TPC), flavonoids, and antioxidant activity (ferric reducing antioxidant power (FRAP), total reducing capacity (TRC), and Cu2+/Fe2+ chelating ability). Phenolic acids and flavonoids were quantified in the extract by LC-DAD, while 19 compounds were tentatively identified by ESI-MS/MS. The lyophilized marigold extract (LME) also inhibited 12% of Wistar rat’s brain lipid oxidation in vitro, inhibited α-amylase, and α-glucosidase activities, but showed no cytotoxicity towards cancerous cells (HCT8 and A549). However, marigold flower extract protected human erythrocytes against mechanical stress. When added into an organic yogurt model (0 to 1.5%), LME increased TPC and antioxidant activity (2,2-diphenyl-1-picrylhydrazyl (DPPH) and TRC), and the sensory analysis showed that the organic yogurt had an acceptance of 80.4%. Our results show that the use of LME may be a technological strategy to increase the content of bioactive compounds in yogurts.

scholarly journals The determination of the phenolic composition, antioxidative activity and heavy metals in the extracts of Calendula officinalis L.

2014 ◽  
Vol 3 (2) ◽  
pp. 46-51 ◽  
Author(s):  
Jasmina Velickovic ◽  
Danica Dimitrijevic ◽  
Snezana Mitic ◽  
Milan Mitic ◽  
Danijela Kostic
Keyword(s):  
Heavy Metals ◽  
Antioxidative Activity ◽  
Phenolic Composition ◽  
Calendula Officinalis ◽  
Calendula Officinalis L

DETERMINATION OF PHENOLIC COMPOUNDS IN Calendula officinalis L. FLOWER'S

2017 ◽  
Author(s):  
C Marques Fornseca Maira ◽  
R Gonçalves Rodrigues Das Dores ◽  
C Silva e Souza ◽  
A Nogueira Sedyama Maria ◽  
Y Poltronieri
Keyword(s):  
Phenolic Compounds ◽  
Calendula Officinalis ◽  
Calendula Officinalis L

scholarly journals DETERMINATION OF ESSENTIAL OIL COMPOSITION, PHENOLIC CONTENT, AND ANTIOXIDANT, ANTIBACTERIAL AND ANTIFUNGAL ACTIVITIES OF MARIGOLD (CALENDULA OFFICINALIS L.) CULTIVATED IN ALGERIA

2019 ◽  
pp. 92-109
Keyword(s):  
Antioxidant Activity ◽  
Antibacterial Activity ◽  
Essential Oil Composition ◽  
Total Phenolic ◽  
Volatile Constituent ◽  
Oil Composition ◽  
Calendula Officinalis ◽  
Extraction Solvent ◽  
Antibacterial And Antifungal Activities ◽  
Calendula Officinalis L

Microwave-assisted hydrodistillation (MAHD) was used as an ecofriendly method to extract the essential oils from flowers and leaves of Calendula officinalis L. cultivated in Algeria. The results obtained were compared with the conventional extraction method, hydrodistillation (HD), and analyzed by gas chromatography-flame ionization detector (GC-FID) and GC-MS. For flowers oils, 33 compounds were identified with HD method vs 20 compounds with MAHD method. For leaves, 26 compounds were identified with HD method vs 19 compounds identified with MAHD method. It is interesting to note, furthermore, that the use of MAHD method during 90 min allowed us to obtain relatively similar yields than HD method during 180 min. The main abundant volatile constituent was αcadinol with 31.9±0.71% for HD vs 39.7±0.26% for MAHD in leaves oils and 32.3±0.26% for HD vs 37.1±0.30% for MAHD in flowers oils. The oxygenated sesquiterpens was the most represented group of natural compounds contributing to the chemical composition in all oils. In the other hand, extraction of total phenolic compounds (TPC) and total flavonoids (TFC) was affected by the solvent type and, thus, 100% methanol was the better extraction solvent for both leaves and flowers. Highest levels were obtained from leaves. The highest antioxidant activity was recorded for leaves extract with 100% methanol. These values indicated a weak antioxidant activity compared to antioxidant standards. A correlation was established between the phenolic and flavonoids contents and the antioxidant activity of the crude extracts. A moderate to great antibacterial activity was observed against Gram+ bacteria. Any antibacterial activity was detected against fungi strains and Gram- bacteria.

Sign in / Sign up

Export Citation Format

Share Document