scholarly journals Antioxidant activity and phytochemical composition of Osmanthus fragrans ' pulps

2015 ◽  
Vol 98 ◽  
pp. 162-166 ◽  
Author(s):  
X.-L. Ouyang ◽  
L.-X. Wei ◽  
H.-S. Wang ◽  
Y.-M. Pan
Keyword(s):  
Antioxidant Activity ◽  
Osmanthus Fragrans ◽  
Phytochemical Composition

scholarly journals Effect of particle size on phytochemical composition and antioxidant properties of Sargassum cristaefolium ethanol extract

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
E. S. Prasedya ◽  
A. Frediansyah ◽  
N. W. R. Martyasari ◽  
B. K. Ilhami ◽  
A. S. Abidin ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Particle Size ◽  
Antioxidant Activities ◽  
Antioxidant Properties ◽  
Ethanol Extract ◽  
Total Phenolic ◽  
Particle Sizes ◽  
Epicatechin Gallate ◽  
Particle Size Reduction ◽  
Phytochemical Composition

AbstractSample particle size is an important parameter in the solid–liquid extraction system of natural products for obtaining their bioactive compounds. This study evaluates the effect of sample particle size on the phytochemical composition and antioxidant activity of brown macroalgae Sargassum cristaefolium. The crude ethanol extract was extracted from dried powders of S.cristeafolium with various particle sizes (> 4000 µm, > 250 µm, > 125 µm, > 45 µm, and < 45 µm). The ethanolic extracts of S.cristaefolium were analysed for Total Phenolic Content (TPC), Total Flavonoid Content (TFC), phenolic compound concentration and antioxidant activities. The extract yield and phytochemical composition were more abundant in smaller particle sizes. Furthermore, the TPC (14.19 ± 2.08 mg GAE/g extract to 43.27 ± 2.56 mg GAE/g extract) and TFC (9.6 ± 1.8 mg QE/g extract to 70.27 ± 3.59 mg QE/g extract) values also significantly increased as particle sizes decreased. In addition, phenolic compounds epicatechin (EC), epicatechin gallate (ECG), epigallocatechin (EGC), and Epigallocatechin gallate (EGCG) concentration were frequently increased in samples of smaller particle sizes based on two-way ANOVA and Tukey’s multiple comparison analysis. These results correlate with the significantly stronger antioxidant activity in samples with smaller particle sizes. The smallest particle size (< 45 µm) demonstrated the strongest antioxidant activity based on DPPH, ABTS, hydroxyl assay and FRAP. In addition, ramp function graph evaluates the desired particle size for maximum phytochemical composition and antioxidant activity is 44 µm. In conclusion, current results show the importance of particle size reduction of macroalgae samples to increase the effectivity of its biological activity.

scholarly journals Phytochemical composition and antioxidant activity of peach as affected by pasteurization and storage duration

LWT ◽  
2012 ◽  
Vol 49 (2) ◽  
pp. 202-207 ◽  
Author(s):  
Ana Oliveira ◽  
Manuela Pintado ◽  
Domingos P.F. Almeida
Keyword(s):  
Antioxidant Activity ◽  
Storage Duration ◽  
Phytochemical Composition ◽  
And Storage

Phytochemical composition and antioxidant activity of different extracts of aerials parts of “Ephedra Alata” from Tunisia

2016 ◽  
Vol 258 ◽  
pp. S301
Author(s):  
J. Ben Lamine ◽  
H. Chahdoura ◽  
N. El Ayeb ◽  
A. Jelled ◽  
K. Adouni ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Phytochemical Composition

Location and tissue effects on phytochemical composition and in vitro antioxidant activity of Moringa oleifera

2020 ◽  
Vol 151 ◽  
pp. 112439
Author(s):  
Martha Gómez-Martínez ◽  
Juan A. Ascacio-Valdés ◽  
Adriana C. Flores-Gallegos ◽  
Jorge González-Domínguez ◽  
Susana Gómez-Martínez ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Moringa Oleifera ◽  
Phytochemical Composition ◽  
Tissue Effects ◽  
In Vitro Antioxidant Activity

Kombucha tea beverage: Microbiological characteristic, antioxidant activity, and phytochemical composition

2019 ◽  
Vol 48 (3) ◽  
pp. 324-331 ◽  
Author(s):  
E. Ivanišová ◽  
K. Meňhartová ◽  
M. Terentjeva ◽  
L. Godočíková ◽  
J. Árvay ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Phytochemical Composition ◽  
Kombucha Tea

scholarly journals Phytochemical Composition and Antioxidant Activities of Two Different Color Chrysanthemum Flower Teas

Molecules ◽  
2019 ◽  
Vol 24 (2) ◽  
pp. 329 ◽  
Author(s):  
Ah-Reum Han ◽  
Bomi Nam ◽  
Bo-Ram Kim ◽  
Ki-Chang Lee ◽  
Beom-Seok Song ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Antioxidant Activities ◽  
Floral Scent ◽  
Radical Scavenging ◽  
Chrysanthemum Morifolium ◽  
Dark Chocolate ◽  
Flowering Plant ◽  
Tea Infusion ◽  
Phytochemical Composition ◽  
Chrysanthemum Morifolium Ramat

Chrysanthemum morifolium Ramat is a perennial flowering plant widely cultivated for use in a tea infusion and as a popular beverage. To identify and evaluate the tea infusion made with a γ-irradiated mutant chrysanthemum cultivar with dark purple petals (cv. ARTI-Dark Chocolate), its phytochemical composition and antioxidant activity were tested and compared with those of the commercially available chrysanthemum cultivar with yellow petals (cv. Gamguk) by HPLC-DAD-ESIMS, as well as DPPH and ABTS radical scavenging assays. The purple chrysanthemum tea contained anthocyanins and linarin, which were not detected in the yellow chrysanthemum tea and the content of chlorogenic acid, acacetin-7-O-β-glucoside, and luteolin was higher compared with the yellow chrysanthemum tea. In contrast, the yellow chrysanthemum tea had higher luteolin-7-O-β-glucoside, 3,5-dicaffeoylquinic acid, apigenin-7-O-β-glucoside, and apigenin contents in comparison with the purple chrysanthemum tea. In addition, the content and antioxidant activity of the two chrysanthemum teas were investigated according to different water temperatures and infusing time. The yellow chrysanthemum tea did not show any significant differences according to infusing time and temperature, while the purple chrysanthemum tea was more influenced by the infusing time than water temperature, showing the highest total compound content in the infusing condition of 100 °C and 4 min. Moreover, the floral scent volatiles of the two chrysanthemum tea sources were analyzed using HS-SPME-GC-MS. In the DPPH radical scavenging assay, the purple chrysanthemum tea broadly showed greater antioxidant activity than did the yellow chrysanthemum tea, corresponding to the high content of anthocyanins known as the powerful antioxidant. Further, both chrysanthemum flower teas exhibited strong ABTS radical scavenging effects ranging from 76% to 61% under all infusing conditions. Therefore, the purple chrysanthemum cultivar, ARTI-Dark Chocolate, is worthy of breeding as a new tea cultivar.

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