Phenolic Composition, Antioxidant and Anticancer Potentials of Extracts from Rosa banksiae Ait. Flowers

Rosa banksiae Ait. (R. banksiae) is a traditional Chinese folk medicine and an ornamental plant. Most previous studies have focused on cultivation and utilization while there are few research papers on the pharmacological activity of R. banksiae. This study aimed to get a better understanding of R. banksiae by extracting polyphenols with fractionated extraction technology. The results showed that ethyl acetate phase (EAP) contained the most polyphenols, while water phase (WP) had the least. HPLC analysis indicated that rutin and luteolin-4′-O-glucoside existed in the EAP and butanol phase (BP), but quercetin was only detected in the EAP. Six phenolic compositions were not detected in WB. The antioxidant and anti-tumor abilities of the EAP and BP were excellent. The results revealed that R. banksiae possessed a great antioxidant capacity and was rich in polyphenols, thus indicating R. banksiae was suitable for being a natural antioxidant and an abundant source of polyphenols.

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Insecticidal Activity of Hyoscyamus niger L. on Lucilia sericata Causing Myiasis

Plants ◽

10.3390/plants9050655 ◽

2020 ◽

Vol 9 (5) ◽

pp. 655

Author(s):

Esra Küpeli Akkol ◽

Mert Ilhan ◽

Esma Kozan ◽

Fatma Tuğçe Gürağaç Dereli ◽

Mustafa Sak ◽

...

Keyword(s):

Ethyl Acetate ◽

Insecticidal Activity ◽

Hplc Analysis ◽

Folk Medicine ◽

Lucilia Sericata ◽

Alkaloid Content ◽

Hyoscyamus Niger ◽

Morphological Abnormalities ◽

Alkaloid Extracts ◽

Main Components

Background: Hyoscyamus niger L. (Solanaceae) generally known as henbane, is commonly distributed in Europe and Asia. In Turkey, henbane seeds have been used in folk medicine to remove worms from the eyes. The present study aimed to investigate the insecticidal activity of H. niger seeds. Methods: n-hexane, ethyl acetate, methanol and alkaloid extracts were prepared from the seeds of the plant and their insecticidal activities on Lucilia sericata larvae were evaluated. EC50 and EC90 values of the alkaloid extract were calculated and morphological abnormalities were investigated. Results: Alkaloid extract prepared from the seeds of this plant displayed significant insecticidal activity. EC50 values of H. niger seeds alkaloid extract were found to be 8.04, 8.49, 7.96 μg/mL against first, second and third instar, respectively. It was determined that malformations of larvae included damaged larvae with small size, contraction and weak cuticle. Furthermore, HPLC analysis was performed on alkaloid extract of H. niger seeds and main components of the extract were determined. It was determined that alkaloid extract mainly contain hyoscyamine and scopolamine. Conclusions: These results confirm the folkloric usage of the plant and suggest that the alkaloid content of the plant could be responsible for the insecticidal activity.

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Optimisation of microwave-assisted extraction from Phyllanthus amarus for phenolic compounds-enriched extracts and antioxidant capacity

Chemical Papers ◽

10.1515/chempap-2016-0009 ◽

2016 ◽

Vol 70 (6) ◽

Cited By ~ 10

Author(s):

Van T. Nguyen ◽

Michael C. Bowyer ◽

Ian A. van Altena ◽

Christopher J. Scarlett

Keyword(s):

Phenolic Compounds ◽

Antioxidant Capacity ◽

Bioactive Compounds ◽

Pharmacological Activity ◽

Extraction Efficiency ◽

Phyllanthus Amarus ◽

Microwave Assisted Extraction ◽

Microwave Assisted ◽

Assisted Extraction ◽

Extraction Parameters

Abstractis known as a healing herb which has traditionally been used in the treatment of various diseases such as hepatitis, diabetes and cancer. The extraction parameters have great effects on the extraction efficiency of bioactive compounds and pharmacological activity of the extracts. This study sought to optimise the microwave-assisted extraction parameters for phenolic compounds-enriched extracts and antioxidant capacity from

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Maceration Before and During Fermentation: Effect on Pinotage Wine Phenolic Composition, Total Antioxidant Capacity and Objective Colour Parameters

South African Journal of Enology and Viticulture ◽

10.21548/27-2-1614 ◽

2017 ◽

Vol 27 (2) ◽

Cited By ~ 1

Author(s):

D. de Beer ◽

E. Joubert ◽

J. Marais ◽

M. Manley

Keyword(s):

Antioxidant Capacity ◽

Total Antioxidant Capacity ◽

Phenolic Composition ◽

Total Antioxidant ◽

Colour Parameters

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Phenolic Composition, Antioxidant Capacity and in vitro Cytotoxicity Assessment of Fruit Wines

Food Technology and Biotechnology ◽

10.17113/ftb.54.02.16.4208 ◽

2016 ◽

Vol 54 (2) ◽

Cited By ~ 19

Author(s):

Ana Ljevar ◽

◽

Natka Ćurko ◽

Marina Tomašević ◽

Kristina Radošević ◽

...

Keyword(s):

Antioxidant Capacity ◽

In Vitro Cytotoxicity ◽

Phenolic Composition ◽

Cytotoxicity Assessment

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Phytochemical analysis and antioxidant capacity ofTabernaemontana catharinensis A. DC. Fruits and branches

Anais da Academia Brasileira de Ciências ◽

10.1590/0001-3765201420120020 ◽

2014 ◽

Vol 86 (2) ◽

pp. 881-888 ◽

Cited By ~ 4

Author(s):

MARIANA PIANA ◽

ALINE A. BOLIGON ◽

THIELE F. DE BRUM ◽

MARINA ZADRA ◽

BIANCA V. BELKE ◽

...

Keyword(s):

High Performance Liquid Chromatography ◽

Liquid Chromatography ◽

Ethyl Acetate ◽

Antioxidant Capacity ◽

Chlorogenic Acid ◽

Condensed Tannins ◽

High Performance ◽

Ethyl Acetate Fraction ◽

Phytochemical Analysis ◽

Dpph Method

The antioxidant capacity of the crude extract and fractions ofTabernaemontana catharinensis fruits and branches, was evaluated by the 2,2-diphenyl-1-picrylhydrazyl (DPPH) method and the content of polyphenols, flavonoids, alkaloids and condensed tannins were determined by the spectrophotometric method. The ethyl acetate fraction of the fruits and the n-butanol fraction of the branches showed IC50 of 181.82 µg/mL and 78.19 µg/mL, respectively. All fractions were analyzed by high performance liquid chromatography (HPLC), in the branches were quantified chlorogenic acid in the chloroform (8.96 mg/g), ethyl acetate (4.31 mg/g) and n-butanol (3.33 mg/g) fractions; caffeic acid in the ethyl acetate (5.24 mg/g) and n-butanol (1.81 mg/g); gallic acid (0.52 mg/g) in the n-butanol. In the fruits, chlorogenic acid in the chloroform (1.67 mg/g); rutin in the ethyl acetate (3.45 mg/g) and n-butanol (8.98 mg/g) fractions. The present study showed that these quantified compounds can contribute to antioxidant capacity which was higher in the branches than in the fruits.

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Climatic Region and Vine Structure: Effect on Pinotage Wine Phenolic Composition, Total Antioxidant Capacity and Colour

South African Journal of Enology and Viticulture ◽

10.21548/27-2-1615 ◽

2017 ◽

Vol 27 (2) ◽

Author(s):

D. de Beer ◽

E. Joubert ◽

J. Marais ◽

D. van Schalkwyk ◽

M. Manley

Keyword(s):

Antioxidant Capacity ◽

Total Antioxidant Capacity ◽

Structure Effect ◽

Phenolic Composition ◽

Climatic Region ◽

Total Antioxidant

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HPLC Analysis and Antioxidant Properties of Algerian Lepidium draba Ethyl acetate Extract

Journal of Biologically Active Products from Nature ◽

10.1080/22311866.2018.1511381 ◽

2018 ◽

Vol 8 (4) ◽

pp. 265-271

Author(s):

Bensaid Sara Ouissem ◽

Bicha Sabrina ◽

Benmekhebi Lotfi ◽

Rebbas Khellaf ◽

Bensouici Chawki ◽

...

Keyword(s):

Ethyl Acetate ◽

Hplc Analysis ◽

Ethyl Acetate Extract ◽

Antioxidant Properties ◽

Lepidium Draba

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Chemical Composition and Antioxidant Activity of Essential Oils from Leaves of Two Specimens of Eugenia florida DC.

Molecules ◽

10.3390/molecules26195848 ◽

2021 ◽

Vol 26 (19) ◽

pp. 5848

Author(s):

Oberdan Oliveira Ferreira ◽

Celeste de Jesus Pereira Franco ◽

Everton Luiz Pompeu Varela ◽

Sebastião Gomes Silva ◽

Márcia Moraes Cascaes ◽

...

Keyword(s):

Antioxidant Activity ◽

Chemical Composition ◽

Essential Oils ◽

Antioxidant Capacity ◽

Secondary Forest ◽

Folk Medicine ◽

Gastrointestinal Problems ◽

Trolox Equivalent ◽

Almost All ◽

Floodplain Area

Eugenia florida DC. belongs to the Myrtaceae family, which is present in almost all of Brazil. This species is popularly known as pitanga-preta or guamirim and is used in folk medicine to treat gastrointestinal problems. In this study, two specimens of Eugenia florida (Efl) were collected in different areas of the same region. Specimen A (EflA) was collected in an area of secondary forest (capoeira), while specimen B (EflB) was collected in a floodplain area. The essential oils (EOs) were extracted from both specimens of Eugenia florida by means of hydrodistillation. Gas chromatography coupled to mass spectrometry (GC/MS) was used to identify the volatile compounds present, and the antioxidant capacity of the EOs was determined by antioxidant capacity (AC-DPPH) and the Trolox equivalent antioxidant (TEAC) assay. For E. florida, limonene (11.98%), spathulenol (10.94%) and α-pinene (5.21%) were identified as the main compounds of the EO extracted from sample A, while sample B comprised selina-3,11-dien-6α-ol (12.03%), eremoligenol (11.0%) and γ-elemene (10.70%). This difference in chemical composition impacted the antioxidant activity of the EOs between the studied samples, especially in sample B of E. florida. This study is the first to report on the antioxidant activity of Eugenia florida DC. essential oils.

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