Factors affecting the antioxidant potential and health benefits of plant foods

2012 ◽  
Vol 92 (6) ◽  
pp. 1101-1111 ◽  
Author(s):  
Hongyan Li ◽  
Rong Tsao ◽  
Zeyuan Deng
Keyword(s):  
Antioxidant Activities ◽  
Health Benefits ◽  
Antioxidant Potential ◽  
Physiological Factors ◽  
Factors Affecting ◽  
Plant Foods ◽  
Post Harvest ◽  
Different Types

Li, H., Tsao, R. and Deng, Z. 2012. Factors affecting the antioxidant potential and health benefits of plant foods. Can. J. Plant Sci. 92: 1101–1111. Phytochemicals, such as carotenoids, phenolics and glucosinolates, in plants and plant-based foods are able to reduce the incidence of non-communicable diseases such as cardiovascular diseases, diabetes, stroke and different types of cancer due to their antioxidant potential. A brief summary of the in vitro and in vivo evidence and how post-harvest storage and processing conditions can affect the health benefits is presented in this review. Genetic, environmental conditions and physiological factors may modify the composition and amounts of these compounds present in plants, thus affecting the in vitro antioxidant activities. Such changes in combination with degradations after digestion can significantly affect the bioaccessibility and bioavailability of phytochemicals. The main objective of this review is to provide updated information on the effects of various factors such as genetics, environment, post-harvest storage and processing on the bioactive components, and knowledge of these factors can lead to multidisciplinary strategies to maximise the bioavailability and health potential of foods.

scholarly journals Carnosine—a natural bioactive dipeptide: bioaccessibility, bioavailability and health benefits

2019 ◽  
Vol 5 ◽  
pp. 8-17 ◽  
Author(s):  
Lujuan Xing ◽  
MacKenzie E. Chee ◽  
Hua Zhang ◽  
Wangang Zhang ◽  
Yoshinori Mine
Keyword(s):  
Therapeutic Potential ◽  
Antioxidant Activities ◽  
Health Benefits ◽  
Biochemical Properties ◽  
Current State ◽  
Preclinical And Clinical Studies ◽  
Potential Use ◽  
Significant Health

Carnosine is a natural dipeptide synthesized by both vertebrate and invertebrate organisms and has functional properties that are specific to muscle and excitable tissues. Recent in vivo and in vitro studies have shown that carnosine presents metal chelating and antioxidant activities and has the ability to inhibit protein carbonylation and glycoxidation. This review describes the health benefits of carnosine in relation to its bioaccessibility, bioavailability and biochemical properties as well as providing the current state-of-the-art knowledge on the potential use of carnosine as a nutraceutical. The therapeutic potential of carnosine has also been investigated by a number of preclinical and clinical studies for diseases such as diabetes and its associated complications, as well as fatigue, ageing, and some neurological disorders. Altogether the current literature provides supportive evidence on the use of carnosine as a natural dietary supplement with significant health boosting efficiency and without any side effects.

Exploitation of the Antioxidant Potential of Geranium Macrorrhizum (Geraniaceae): Hepatoprotective and Antimicrobial Activities

2012 ◽  
Vol 7 (12) ◽  
pp. 1934578X1200701 ◽  
Author(s):  
Niko S. Radulović ◽  
Milan B. Stojković ◽  
Snežana S. Mitić ◽  
Pavle J. Randjelović ◽  
Ivan R. Ilić ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Plant Species ◽  
Antioxidant Activities ◽  
Radical Scavenging ◽  
Antimicrobial Activities ◽  
Antioxidant Potential ◽  
Human Pathogens ◽  
Methanol Extracts

In this study we evaluated in vitro (radical scavenging) and in vivo (hepatoprotective effect) antioxidant activities and antimicrobial properties of the extracts of the above- and underground parts of Geranium macrorrhizum L. (Geraniaceae), an ethnopharmacologically renowned plant species. The antioxidant activity and total phenol and flavonoid contents of four different solvent extracts were evaluated by seven different methods. The methanol extracts, administered i.p. to rats (120-480 mg/kg), were evaluated for hepatoprotective activity in a CCl4-induced hepatotoxicity model. The same extracts were tested for antimicrobial activity against seven bacterial and two fungal species. The administered methanol extracts with the highest antioxidant potential showed a significant dose-dependent hepatoprotective action against CCl4-induced liver damage in both decreasing the levels of liver transaminases and bilirubin and in reducing the extent of morphological malformations of the liver. The leaf methanol extract displayed a very strong antibacterial activity, especially against Staphylococcus aureus, with low minimal inhibitory and bactericidal concentrations. These results justify the frequent use of this plant species in folk medicine. Besides the known astringent effect, one can expect that the observed antimicrobial activity against several human pathogens contributes to the wound healing properties of this plant.

scholarly journals Antioxidant Activities of Stilbenoids fromRheum emodiWall

2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
Yuan-yuan Chai ◽  
Fang Wang ◽  
Yan-li Li ◽  
Ke Liu ◽  
Hui Xu
Keyword(s):  
Antioxidant Activity ◽  
Antioxidant Activities ◽  
Inflammatory Diseases ◽  
Radical Scavenging ◽  
Reducing Power ◽  
Antioxidant Potential ◽  
Hydroxyl Group ◽  
Antioxidant Power

Rheum emodiWall has been reported to possess protective effect in many inflammatory diseases and oxidative stress-related injuries. This study aims to investigate antioxidant power of stilbenoids fromR. emodiand then explore the material basis for its antioxidant potential. The most abundant stilbenoid piceatannol-4′-O-β-D-glucopyranoside (PICG) and its aglycon piceatannol (PICE) were isolated fromR. emodirhizome. Using well-accepted antioxidant chemicals as reference, antioxidant activity of these stilbenoids was examined by measuring DPPH and superoxide anion radical scavenging, ferric reducing power, and inhibition of lipid peroxidationin vitro. Both PICG and PICE displayed promising antioxidant activity in all the four assays. Comparisons among the tested compounds indicated that PICE has the most potent antioxidant activity and the presence of 3′-hydroxyl group may enhance antioxidant activity of stilbenoids. The antioxidative effect of PICE at the cellular level was further demonstrated on the model of hydrogen-peroxide-induced H9c2 rat cardiomyoblasts injury. Taking into account the rapidin vivometabolic transformation of PICG into PICE it can be inferred that the most abundant stilbenoid PICG may be an important constituent responsible for the antioxidant potential ofR. emodiand promising to be developed as an antioxidant agent for supplementary or therapeutic use.

scholarly journals Coccoloba alnifolia Leaf Extract as a Potential Antioxidant Molecule Using In Vitro and In Vivo Assays

2020 ◽  
Vol 2020 ◽  
pp. 1-12
Author(s):  
Luciana Fentanes Moura de Melo ◽  
Dayanne Lopes Gomes ◽  
Lucas Felipe da Silva ◽  
Larissa Marina Pereira Silva ◽  
Marina Lopes Machado ◽  
...  
Keyword(s):  
High Performance ◽  
Antioxidant Activities ◽  
Water Extract ◽  
Scientific Data ◽  
Antioxidant Potential ◽  
Leaf Extracts ◽  
C Elegans ◽  
Mammalian Cell Lines

The genus Coccoloba is widely used in traditional folk medicine, but few scientific data exist for this genus. The goal of this study was to characterise the chemical composition and antioxidant activities of C. alnifolia leaf extracts using in vitro and in vivo assays. Six extracts were obtained: hexane (HE), chloroform (CE), ethanol (EE), methanol (ME), water end extract (WEE), and water extract (WE). Thin-layer chromatography (TLC) analysis showed the presence of phenols, saponins, terpenes, and flavonoids. In vitro assays demonstrated substantial antioxidant potential, especially for polar extracts (EE, ME, WEE, and WE). Moreover, no toxic effects were observed on mammalian cell lines for most of the extracts at the concentrations evaluated. The nematode Caenorhabditis elegans was also used as an in vivo model for testing antioxidant potential. The EE and WE were chosen, based on previously obtained results. It was observed that neither the EE nor the WE had any toxic effect on C. elegans development. Additionally, the antioxidant potential was evaluated using tert-butyl hydroperoxide as a stressor agent. The EE increased the life span of C. elegans by 28% compared to that of the control, and the WE increased the range to 39.2-41.3%. High-performance liquid chromatography (HPLC-DAD) showed the presence of gallic acid, p-coumaric acid, and vitexin in the WE. Therefore, in vitro and in vivo data demonstrated the antioxidant potential of C. alnifolia extracts and their possible biotechnological applications.

scholarly journals Blueberry Supplementation in Neuronal Health and Protective Technologies for Efficient Delivery of Blueberry Anthocyanins

Biomolecules ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 102
Author(s):  
Phuong H.L. Tran ◽  
Thao T.D. Tran
Keyword(s):  
Health Benefits ◽  
In Vivo Studies ◽  
Daily Consumption ◽  
Factors Affecting ◽  
Highly Active ◽  
Age Related ◽  
Blueberry Supplementation ◽  
Decision Making Factors

Blueberries are consumed as healthy fruits that provide a variety of benefits to the nervous system. Scientists have found that blueberries can be used as a daily edible source for supplementation to prevent and minimize complexities of age-related diseases as well as to improve learning and memory in children. Anthocyanins are the most mentioned compounds among the components in blueberries, as they play a major role in providing the health benefits of this fruit. However, while they are highly active in impeding biological impairment in neuronal functions, they have poor bioavailability. This review focuses on neurological investigations of blueberries from in vitro cell studies to in vivo studies, including animal and human studies, with respect to their positive outcomes of neuroprotection and intervention in neurodegenerative conditions. Readers will also find information on the bioavailability of anthocyanins and the considerable factors affecting them so that they can make informed decisions regarding the daily consumption of blueberries. In this context, the ways in which blueberries or blueberry supplementation forms are consumed and which of these forms is best for maximizing the health benefits of blueberries should be considered important decision-making factors in the consumption of blueberries; all of these aspects are covered in this review. Finally, we discuss recent technologies that have been employed to improve the bioavailability of blueberry anthocyanins in the development of effective delivery vehicles supporting brain health.

scholarly journals ANTIOXIDANT ACTIVITY ASSESSMENT OF TAMUS COMMUNIS L. ROOTS

2016 ◽  
Vol 8 (12) ◽  
pp. 64 ◽  
Author(s):  
Zerargui Fatima ◽  
Baghiani Abderrahmane ◽  
Khennouf Seddik ◽  
Arrar Lekhmici
Keyword(s):  
Antioxidant Activity ◽  
Antioxidant Activities ◽  
Folk Medicine ◽  
Antioxidant Potential ◽  
Standard Drug ◽  
Activity Assessment ◽  
C 50 ◽  
Β Carotene

<p><strong>Object: </strong>The aim of this study was to evaluate the antioxidant activities of <em>Tamus communis</em> L. (<em>T .communis</em>) roots. This plant is used in folk medicine in the treatment of rheumatism, arthritis and lumbago.</p><p><strong>Methods</strong>: The extraction of polyphenols has been followed by the determination of total polyphenols and flavonoids. The methanol extract (MeOHE) was chromatographied on a silica gel column. The column was eluted with chloroform and then with chloroform /methanol mixtures of increasing polarity, 6 main fractions (FI--FVI)) were collected and grouped according to their TLC (Thin layer chromatography). Several methods were used to evaluate the <em>in vitro</em> antioxidant activity such as DPPH (2,2'-diphenyl-1-picrylhydrazy), bleaching of β-carotene for 24 hours, lipid peroxidation and anti-hemolytic activity. An <em>in vivo</em> approach was carried out on mice treated with CE (crud extract) at a dose of 100 mg / Kg / day for 21 consecutive days, and one group was treated with vitamin C (Vit C 50 mg/kg) as a standard drug. To determine the improvement of antioxidant potential, basic biochemical parameters were used in tissue (liver), plasma and whole blood.</p><p><strong>Results</strong>: The results showed that the highest level of polyphenols was recorded in FII (73.143±0.009<strong> </strong>mg GA-Eq/g extract (Gallic Acid Equivalent)) / g of extract) followed by MeOHE (69.786±0.10 mg GA-Eq/g extract). Total flavonoid contents of extracts / fractions showed that MeOHE contains the highest level. Inhibition of DPPH radical showed that MeOHE (0.1187 ± 0.025 mg / ml) and CE (0.2363 ± 0.019 mg / ml) have the most efficient antioxidant activity.  All the extracts were capable of inhibiting the bleaching of β-carotene by scavenging linoleate derived free radicals, and all the studied extracts have a very important antihemolytic activity (p&lt;0.001) and revealed an extension of hemolysis half time from 70.34±2.15 min of CTL (AAPH (2,2-azo- bis (2-amidinopropane) dihydrochloride)) and 207 ± 5.65 min for FI. The in vivo assay was</p><p>exhibited a significant decrease (54.09%) of the content of malondialdehyde (MDA) in the liver and increased glutathione (GSH) and catalase (47.30% and 46.87% respectively).</p><p><strong>Conclusion</strong>: These findings suggest that the extract obtained from <em>T.  communis</em> have active substances contributing to the increase in natural antioxidant potential.</p>

In vitro and in vivo antioxidant activities of the leaves of Chrysophyllum albidum

Planta Medica ◽  
2011 ◽  
Vol 77 (12) ◽  
Author(s):  
AH Adebayo ◽  
AO Abolaji ◽  
OO Ayepola ◽  
TB Olorunfemi ◽  
OS Taiwo
Keyword(s):  
Antioxidant Activities

scholarly journals Silver Nanoparticles and Their Antibacterial Applications

2021 ◽  
Vol 22 (13) ◽  
pp. 7202
Author(s):  
Tamara Bruna ◽  
Francisca Maldonado-Bravo ◽  
Paul Jara ◽  
Nelson Caro
Keyword(s):  
Silver Nanoparticles ◽  
Antibacterial Agents ◽  
Multidrug Resistant ◽  
Secondary Effects ◽  
Cytotoxic Effects ◽  
Factors Affecting ◽  
Gram Positive Bacteria ◽  
Resistant Strains

Silver nanoparticles (AgNPs) have been imposed as an excellent antimicrobial agent being able to combat bacteria in vitro and in vivo causing infections. The antibacterial capacity of AgNPs covers Gram-negative and Gram-positive bacteria, including multidrug resistant strains. AgNPs exhibit multiple and simultaneous mechanisms of action and in combination with antibacterial agents as organic compounds or antibiotics it has shown synergistic effect against pathogens bacteria such as Escherichia coli and Staphylococcus aureus. The characteristics of silver nanoparticles make them suitable for their application in medical and healthcare products where they may treat infections or prevent them efficiently. With the urgent need for new efficient antibacterial agents, this review aims to establish factors affecting antibacterial and cytotoxic effects of silver nanoparticles, as well as to expose the advantages of using AgNPs as new antibacterial agents in combination with antibiotic, which will reduce the dosage needed and prevent secondary effects associated to both.

scholarly journals Engineering nucleosomes for generating diverse chromatin assemblies

2021 ◽  
Author(s):  
Zenita Adhireksan ◽  
Deepti Sharma ◽  
Phoi Leng Lee ◽  
Qiuye Bao ◽  
Sivaraman Padavattan ◽  
...  
Keyword(s):  
Dynamic Properties ◽  
Dna Nanostructures ◽  
Macromolecular Assemblies ◽  
Maximum Resolution ◽  
Different Types ◽  
Chromatin Structural ◽  
Dna Fragment

Abstract Structural characterization of chromatin is challenging due to conformational and compositional heterogeneity in vivo and dynamic properties that limit achievable resolution in vitro. Although the maximum resolution for solving structures of large macromolecular assemblies by electron microscopy has recently undergone profound increases, X-ray crystallographic approaches may still offer advantages for certain systems. One such system is compact chromatin, wherein the crystalline state recapitulates the crowded molecular environment within the nucleus. Here we show that nucleosomal constructs with cohesive-ended DNA can be designed that assemble into different types of circular configurations or continuous fibers extending throughout crystals. We demonstrate the utility of the method for characterizing nucleosome compaction and linker histone binding at near-atomic resolution but also advance its application for tackling further problems in chromatin structural biology and for generating novel types of DNA nanostructures. We provide a library of cohesive-ended DNA fragment expression constructs and a strategy for engineering DNA-based nanomaterials with a seemingly vast potential variety of architectures and histone chemistries.

scholarly journals Stem cells and exosomes: promising candidates for necrotizing enterocolitis therapy

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Ruijie Zeng ◽  
Jinghua Wang ◽  
Zewei Zhuo ◽  
Yujun Luo ◽  
Weihong Sha ◽  
...  
Keyword(s):  
Stem Cells ◽  
Necrotizing Enterocolitis ◽  
Therapeutic Effects ◽  
Beneficial Effects ◽  
Pediatric Diseases ◽  
Gastrointestinal Conditions ◽  
Different Types ◽  
Novel Therapeutic Strategies

AbstractNecrotizing enterocolitis (NEC) is a devastating disease predominately affecting neonates. Despite therapeutic advances, NEC remains the leading cause of mortality due to gastrointestinal conditions in neonates. Stem cells have been exploited in various diseases, and the application of different types of stem cells in the NEC therapy is explored in the past decade. However, stem cell transplantation possesses several deficiencies, and exosomes are considered potent alternatives. Exosomes, especially those derived from stem cells and breast milk, demonstrate beneficial effects for NEC both in vivo and in vitro and emerge as promising options for clinical practice. In this review, the function and therapeutic effects of stem cells and exosomes for NEC are investigated and summarized, which provide insights for the development and application of novel therapeutic strategies in pediatric diseases. Further elucidation of mechanisms, improvement in preparation, bioengineering, and administration, as well as rigorous clinical trials are warranted.

Sign in / Sign up

Export Citation Format

Share Document