1
|
Aguilera JM. Berries as Foods: Processing, Products, and Health Implications. Annu Rev Food Sci Technol 2024; 15:1-26. [PMID: 37989130 DOI: 10.1146/annurev-food-072023-034248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2023]
Abstract
Berries are highly regarded as flavorful and healthy fruits that may prevent or delay some chronic diseases attributed to oxidative stress and inflammation. Berries are low in calories and harbor diverse bioactive phytochemicals, antioxidants, dietary fibers, and vitamins. This review delves into the main characteristics of fresh berries and berry products as foods and the technologies associated with their production. The main effects of processing operations and related variables on bioactive components and antioxidants are described. This review critically discusses why some health claims based on in vitro antioxidant data and clinical studies and intervention trials are difficult to assess. The review suggests that the beneficial health effects of berries are derived from a multifactorial combination of complex mixtures of abundant phenolic components, antioxidants, and their metabolites acting synergistically or additively with other nutrients like fibers and vitamins and possibly by modulating the gut microbiota.
Collapse
Affiliation(s)
- José Miguel Aguilera
- Department of Chemical and Bioprocess Engineering, Pontificia Universidad Católica de Chile, Santiago, Chile;
| |
Collapse
|
2
|
Revalorisation of Sage ( Salvia lavandulifolia Vahl) By-Product Extracts as a Source of Polyphenol Antioxidants for Novel Jelly Candies. Antioxidants (Basel) 2023; 12:antiox12010159. [PMID: 36671021 PMCID: PMC9854814 DOI: 10.3390/antiox12010159] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 01/04/2023] [Accepted: 01/06/2023] [Indexed: 01/11/2023] Open
Abstract
Sage (Salvia lavandulifolia Vahl) aqueous extracts (SE) obtained from distillation by-products were assessed as antioxidants for nutritionally enhanced jelly candies. Two experimental SEs with a different content of phenolic acids and flavonoids were tested: (i) SE38 (37.6 mg/g) and (ii) SE70 (69.8 mg/g), with salvianic and rosmarinic acids as main polyphenols, respectively. Flavour alteration, stability of sage polyphenols, physical quality traits and antioxidant capacity (AC) were studied in strawberry candies formulated without sugars and enriched with SEs at 0.25, 0.50 and 0.75 g/kg. Despite their different quantitative composition, SE38 and SE70 provided similar antioxidant properties, which were dose dependent. Salvianic and rosmarinic acids were stable without degrading to candy processing (up to 80 °C), keeping their antioxidant potential. There were no relevant differences in flavour or physical traits (pH, °Brix and CIELab colour) between untreated and SE-enriched strawberry candies. The addition of 0.75 g SE/kg resulted in relevant increases of candy AC: (i) from 30 to 38 mg GAE/100 g (total phenolics); (ii) from 10 to 17 mg TE/100 g (DPPH• radical scavenging assay); (iii) from 5 to 13 mg TE/100 g (ABTS·+ radical scavenging assay); (iv) from 84 to 163 µmol Fe2+/100 g (FRAP capacity) and (v) from to 75 to 83% (inhibition of deoxyribose damage). Sage distillation by-products can be revalorised as a source of natural antioxidants to produce healthier candies.
Collapse
|
3
|
Kumar N, Daniloski D, Pratibha, Neeraj, D'Cunha NM, Naumovski N, Petkoska AT. Pomegranate peel extract – A natural bioactive addition to novel active edible packaging. Food Res Int 2022; 156:111378. [DOI: 10.1016/j.foodres.2022.111378] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 04/30/2022] [Accepted: 05/11/2022] [Indexed: 01/24/2023]
|
4
|
Structure dependent stability and antioxidant capacity of strawberry polyphenols in the presence of canola protein. Food Chem 2022; 385:132630. [PMID: 35334342 DOI: 10.1016/j.foodchem.2022.132630] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Revised: 01/27/2022] [Accepted: 03/02/2022] [Indexed: 11/21/2022]
Abstract
Polyphenol stability in processed food affects sensorial and health-promoting properties. Thus, understanding the effects of various food components on polyphenols degradation, as a function of their chemical structure, can contribute to optimal product engineering. The current study focuses on the impact of polyphenol structure on polyphenol-protein interactions in correlation with their stability and total antioxidant capacity (TAC) during shelf-life. A strawberry polyphenol extract (SPE) and canola protein extract (CPE) were used as multicomponent polyphenol and plant-based protein models. A non-covalent interaction of SPE and CPE was observed at pH = 3. Among CPE proteins cruciferin was the most involved in interactions, and the polyphenols with the highest relative binding were flavonols (45 ± 3%-68 ± 2%), while anthocyanins presented lower values (0 ± 0.4%-27 ± 1%). The presence of the proteins enhanced mostly the anthocyanins' stability, yet the extent of the impact was not correlated with the relative binding. TAC was not better preserved by the presence of CPE.
Collapse
|
5
|
Vieira Nogueira P, Vilas Boas AC, Ferreira Suárez N, Arruda de Abreu RA, de Carvalho CV, Salles Pio LA, Pasqual M. Composition and Functional Properties of Banana Tree Male Inflorescence Flour. JOURNAL OF CULINARY SCIENCE & TECHNOLOGY 2022. [DOI: 10.1080/15428052.2022.2040677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
| | | | | | | | | | | | - Moacir Pasqual
- Department of Agriculture, Federal University of Lavras, Lavras, Brazil
| |
Collapse
|
6
|
Hunter M, Ghildyal R, D'Cunha NM, Gouws C, Georgousopoulou EN, Naumovski N. The bioactive, antioxidant, antibacterial, and physicochemical properties of a range of commercially available Australian honeys. Curr Res Food Sci 2021; 4:532-542. [PMID: 34430875 PMCID: PMC8374640 DOI: 10.1016/j.crfs.2021.08.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 07/31/2021] [Accepted: 08/05/2021] [Indexed: 11/19/2022] Open
Abstract
Honey is a supersaturated sugar solution produced from plant nectar, with its composition influenced by geographic and floral origins, and with several properties contributing to its health-related abilities. This study aimed to determine the bioactive composition, antioxidant characteristics, antibacterial activity, and physicochemical properties of commercial Australian honeys. In total, 42 commercial Australian honeys were selected, and categorised according to front-label descriptions. Honeys were analysed: quality (Hydroxymethylfurfural); colour (colour intensity, L*,a*,b*); bioactive composition (phenolic, flavonoid, and carotenoid content); antioxidant characteristics (DPPH, CUPRAC, FRAP); antibacterial activity (MIC50); physicochemical properties (pH, TSS, viscosity, a w). Colour intensity correlated with each assessed bioactive compound and antioxidant characteristic (p ≤ 0.001). MIC50 (S. aureus) was associated with FRAP and a w, suggesting mechanisms of action for honey's antibacterial activity. Manuka-type honeys had higher colour intensity (1440 (98.5) mAU) than other categories (p ≤ 0.05), and consistently higher bioactive and antioxidant properties. This provides the potential to inform antioxidant-related health outcomes.
Collapse
Affiliation(s)
- Maddison Hunter
- Faculty of Health, University of Canberra, Bruce, 2617, ACT, Australia
| | - Reena Ghildyal
- Faculty of Science and Technology, University of Canberra, Bruce, 2617, ACT, Australia
| | - Nathan M. D'Cunha
- Faculty of Health, University of Canberra, Bruce, 2617, ACT, Australia
- Functional Foods and Nutrition Research (FFNR) Laboratory, University of Canberra, Bruce, 2617, ACT, Australia
| | - Caroline Gouws
- Faculty of Health, University of Canberra, Bruce, 2617, ACT, Australia
| | - Ekavi N. Georgousopoulou
- Sydney School of Medicine, University of Notre Dame Australia, Darlinghurst, Sydney, 2010, NSW, Australia
- Centre for Health and Medical Research, ACT Health Directorate, Phillip, 2606, ACT, Australia
| | - Nenad Naumovski
- Faculty of Health, University of Canberra, Bruce, 2617, ACT, Australia
- Functional Foods and Nutrition Research (FFNR) Laboratory, University of Canberra, Bruce, 2617, ACT, Australia
| |
Collapse
|
7
|
Naumovski N, D’Cunha NM. Antioxidant, Phytochemical and Enzymatic Characteristics of Selected Medicinal Plants from the Republic of Korea: A commentary. EXPLORATORY RESEARCH AND HYPOTHESIS IN MEDICINE 2021; 000:000-000. [DOI: 10.14218/erhm.2021.00030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
8
|
Anti-Apoptotic and Anti-Inflammatory Role of Trans ε-Viniferin in a Neuron-Glia Co-Culture Cellular Model of Parkinson's Disease. Foods 2021; 10:foods10030586. [PMID: 33799534 PMCID: PMC7998636 DOI: 10.3390/foods10030586] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Revised: 03/06/2021] [Accepted: 03/07/2021] [Indexed: 11/17/2022] Open
Abstract
The polyphenol trans-ε-viniferin (viniferin) is a dimer of resveratrol, reported to hold antioxidant and anti-inflammatory properties. The aims of our study were to evaluate the neuroprotective potential of viniferin in the nerve growth factor (NGF)-differentiated PC12 cells, a dopaminergic cellular model of Parkinson's disease (PD) and assess its anti-inflammatory properties in a N9 microglia-neuronal PC12 cell co-culture system. The neuronal cells were pre-treated with viniferin, resveratrol or their mixture before the administration of 6-hydroxydopamine (6-OHDA), recognized to induce parkinsonism in rats. Furthermore, N9 microglia cells, in a co-culture system with neuronal PC12, were pre-treated with viniferin, resveratrol or their mixture to investigate whether these polyphenols could reduce lipopolysaccharide (LPS)-induced inflammation. Our results show that viniferin as well as a mixture of viniferin and resveratrol protects neuronal dopaminergic cells from 6-OHDA-induced cytotoxicity and apoptosis. Furthermore, when viniferin, resveratrol or their mixture was used to pre-treat microglia cells in our co-culture system, they reduced neuronal cytotoxicity induced by glial activation. Altogether, our data highlight a novel role for viniferin as a neuroprotective and anti-inflammatory molecule in a dopaminergic cellular model, paving the way for nutraceutical therapeutic avenues in the complementary treatments of PD.
Collapse
|
9
|
Trajkovska Petkoska A, Daniloski D, D'Cunha NM, Naumovski N, Broach AT. Edible packaging: Sustainable solutions and novel trends in food packaging. Food Res Int 2021; 140:109981. [PMID: 33648216 DOI: 10.1016/j.foodres.2020.109981] [Citation(s) in RCA: 85] [Impact Index Per Article: 28.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 11/28/2020] [Accepted: 12/08/2020] [Indexed: 11/28/2022]
Abstract
Novel food packaging techniques are an important area of research to promote food quality and safety. There is a trend towards environmentally sustainable and edible forms of packaging. Edible packaging typically uses sustainable, biodegradable material that is applied as a consumable wrapping or coating around the food, which generates no waste. Numerous studies have recently investigated the importance of edible materials as an added value to packaged foods. Nanotechnology has emerged as a promising method to provide use of bioactives, antimicrobials, vitamins, antioxidants and nutrients to potentially increase the functionality of edible packaging. It can act as edible dispensers of food ingredients as encapsulants, nanofibers, nanoparticles and nanoemulsions. In this way, edible packaging serves as an active form of packaging. It plays an important role in packaged foods by desirably interacting with the food and providing technological functions such as releasing scavenging compounds (antimicrobials and antioxidants), and removing harmful gasses such as oxygen and water vapour which all can decrease products quality and shelf life. Active packaging can also contribute to maintaining the nutritive profile of packaged foods. In this review, authors present the latest information on new technological advances in edible food packaging, their novel applications and provide examples of recent studies where edible packaging possesses also an active role.
Collapse
Affiliation(s)
- Anka Trajkovska Petkoska
- Faculty of Technology and Technical Sciences, St. Clement of Ohrid University of Bitola, Dimitar Vlahov, 1400 Veles, Republic of North Macedonia.
| | - Davor Daniloski
- Advanced Food Systems Research Unit, Institute for Sustainable Industries and Liveable Cities and College of Health and Biomedicine, Victoria University, Melbourne, VIC 8001, Australia; Food Chemistry and Technology Department, Teagasc Food Research Centre, Moorepark, Fermoy, P61 C996 Cork, Ireland.
| | - Nathan M D'Cunha
- Faculty of Health, School of Rehabilitation and Exercise Sciences, Department of Food Science and Human Nutrition, University of Canberra, Bruce, ACT 2617, Australia.
| | - Nenad Naumovski
- Faculty of Health, School of Rehabilitation and Exercise Sciences, Department of Food Science and Human Nutrition, University of Canberra, Bruce, ACT 2617, Australia.
| | - Anita T Broach
- CSI: Create.Solve.Innovate. LLC, 2020 Kraft Dr., Suite 3007, Blacksburg, VA 24060, USA.
| |
Collapse
|
10
|
Functional Beverages, from Idea to Functionality. BEVERAGES 2020. [DOI: 10.3390/beverages6040071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The search for, and development of beverages that could be a panacea is one which is several millennia old [...]
Collapse
|
11
|
Wang L, Zhao H, Brennan M, Guan W, Liu J, Wang M, Wen X, He J, Brennan C. In vitro gastric digestion antioxidant and cellular radical scavenging activities of wheat-shiitake noodles. Food Chem 2020; 330:127214. [DOI: 10.1016/j.foodchem.2020.127214] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 05/27/2020] [Accepted: 05/31/2020] [Indexed: 12/16/2022]
|
12
|
Seed Oil from Mediterranean Aromatic and Medicinal Plants of the Lamiaceae Family as a Source of Bioactive Components with Nutritional. Antioxidants (Basel) 2020; 9:antiox9060510. [PMID: 32532110 PMCID: PMC7346175 DOI: 10.3390/antiox9060510] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Revised: 06/08/2020] [Accepted: 06/08/2020] [Indexed: 12/29/2022] Open
Abstract
The potential use as food ingredients of 12 commercial seed species belonging to the Lamiaceae family constitutes the main goal of this research. For that, the oil yield, the lipid profile, tocopherol content, phenolic profile and antioxidant capacities were determined. Seeds from Satureja hortensis, S. montana, Lavandula angustifolia, L. latifolia and Origanum vulgare can be considered as important sources of ω-3 polyunsaturated fatty acids (50.5; 52.4; 52.1; 48.5 and 45.5 g/100 g, respectively), likewise for seed oils from Salvia lavandulifolia and Rosmarinus officinalis regarding ω-6 polyunsaturated fatty acids (52.2 and 50.0 g/100 g, respectively). The total tocopherol concentration varied between 42.8 and 113.8 mg/100 g of oil. The highest antioxidant capacities corresponded to Thymbra capitata and Origanum vulgare seed oils, in which carvacrol was the major phenolic monoterpene quantified. The presence of cinnamoyl-apigenin derivatives and hydroxycoumarin-apigenin-derivatives in spike lavender is described for the first time. Most of these seeds can be considered as an important source of oil rich in bioactive components of interest for human nutrition.
Collapse
|
13
|
Pérez-Gálvez A, Viera I, Roca M. Carotenoids and Chlorophylls as Antioxidants. Antioxidants (Basel) 2020; 9:E505. [PMID: 32526968 PMCID: PMC7346216 DOI: 10.3390/antiox9060505] [Citation(s) in RCA: 137] [Impact Index Per Article: 34.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 05/29/2020] [Accepted: 06/06/2020] [Indexed: 01/06/2023] Open
Abstract
Chlorophylls and carotenoids are natural pigments that are present in our daily diet, especially with the increasing tendency towards more natural and healthy behaviors among consumers. As disturbed antioxidant homeostasis capacities seem to be implicated in the progress of different pathologies, the antioxidant properties of both groups of lipophilic compounds have been studied. The objective of this review was to analyze the state-of-the-art advances in this field. We conducted a systematic bibliographic search (Web of Science™ and Scopus®), followed by a comprehensive and critical description of the results, with special emphasis on highly cited and more recently published research. In addition to an evaluative description of the methodologies, this review discussed different approaches used to obtain a physiological perspective, from in vitro studies to in vivo assays using oxidative biomarkers. From a chemical viewpoint, many studies have demonstrated how a pigment's structure influences its antioxidant response and the underlying mechanisms. The major outcome is that this knowledge is essential for interpreting new data in a metabolic networks context in the search for more direct applications to health. A promising era is coming where the term "antioxidant" is understood in terms of its broadest significance.
Collapse
Affiliation(s)
| | | | - María Roca
- Food Phytochemistry Department, Instituto de la Grasa (CSIC), University Campus, Building 46, 41013 Sevilla, Spain; (A.P.-G.); (I.V.)
| |
Collapse
|
14
|
Speer H, D’Cunha NM, Alexopoulos NI, McKune AJ, Naumovski N. Anthocyanins and Human Health-A Focus on Oxidative Stress, Inflammation and Disease. Antioxidants (Basel) 2020; 9:antiox9050366. [PMID: 32353990 PMCID: PMC7278778 DOI: 10.3390/antiox9050366] [Citation(s) in RCA: 75] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2020] [Revised: 04/21/2020] [Accepted: 04/27/2020] [Indexed: 11/23/2022] Open
Abstract
Consumption of anthocyanins (ACNs), due to their antioxidant, anti-inflammatory and anti-apoptotic effects, has been proposed for the prevention and treatment of several different diseases and conditions. ACNs are recognized as one of the leading nutraceuticals for prolonging health benefits through the attenuation of oxidative stress, and inflammatory or age-related diseases. Increased consumption of ACNs has the potential to attenuate the damage ensuing from oxidative stress, inflammation, enhance cardiometabolic health, and delay symptoms in predisposed neuropathology. A myriad of evidence supports ACN consumption as complementary or standalone treatment strategies for non-communicable diseases (NCDs) including obesity, diabetes, cardiovascular disease (CVD), neurodegenerative diseases, as well as, more recently, for the modulation of gut bacteria and bone metabolism. While these findings indicate the beneficial effects of ACN consumption, their food sources differ vastly in ACN composition and thus potentially in their physiological effects. Consumption of foods high in ACNs can be recommended for their potential beneficial health effects due to their relatively easy and accessible addition to the everyday diet.
Collapse
Affiliation(s)
- Hollie Speer
- Faculty of Health, University of Canberra, Bruce, ACT 2617, Australia; (H.S.); (N.M.D.); (A.J.M.)
- Faculty of Science and Technology, University of Canberra, Bruce, ACT 2617, Australia
- University of Canberra Research Institute for Sport and Exercise (UC-RISE), University of Canberra, Bruce, ACT 2617, Australia
| | - Nathan M. D’Cunha
- Faculty of Health, University of Canberra, Bruce, ACT 2617, Australia; (H.S.); (N.M.D.); (A.J.M.)
| | | | - Andrew J. McKune
- Faculty of Health, University of Canberra, Bruce, ACT 2617, Australia; (H.S.); (N.M.D.); (A.J.M.)
- University of Canberra Research Institute for Sport and Exercise (UC-RISE), University of Canberra, Bruce, ACT 2617, Australia
- Discipline of Biokinetics, Exercise and Leisure Sciences, School of Health Sciences, University of KwaZulu-Natal, Durban, KwaZulu-Natal 4000, South Africa
| | - Nenad Naumovski
- Faculty of Health, University of Canberra, Bruce, ACT 2617, Australia; (H.S.); (N.M.D.); (A.J.M.)
- Correspondence: ; Tel.: +612-6206-8719
| |
Collapse
|
15
|
A Review of the Potential Health Benefits of Low Alcohol and Alcohol-Free Beer: Effects of Ingredients and Craft Brewing Processes on Potentially Bioactive Metabolites. BEVERAGES 2020. [DOI: 10.3390/beverages6020025] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Beer is a beverage of significant historical and cultural importance. Interest in the potential health effects of alcoholic beverages has largely focused on wine; however, there are a number of potentially beneficial bioactives that beer may contain that warrant further investigation. The challenge of considering any potential health benefits of beer are restricted by the negative consequences of its alcohol and energy content. There is potential to enhance the bioactive qualities of beer whilst reducing the alcohol and energy content through novel brewing approaches often used in craft brewing, in terms of ingredients, brewing methods and type of fermentation. Consumer demand to produce a greater variety of beer types, including alcohol-free beers, may also help to increase the number of beers which may have greater potential to improve health, with lower levels of alcohol, while still being tasty products. As low alcohol, prebiotic and bioactive containing beers are developed, it is important that their potential health benefits and risks are fully assessed.
Collapse
|
16
|
Selected in vitro methods to determine antioxidant activity of hydrophilic/lipophilic substances. ACTA CHIMICA SLOVACA 2020. [DOI: 10.2478/acs-2019-0028] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Abstract
The topic of free radicals and related antioxidants is greatly discussed nowadays. Antioxidants help to neutralize free radicals before damaging cells. In the absence of antioxidants, a phenomenon called oxidative stress occurs. Oxidative stress can cause many diseases e.g. Alzheimer’s disease and cardiovascular diseases. Therefore, antioxidant activity of various compounds and the mechanism of their action have to be studied. Antioxidant activity and capacity are measured by in vitro and in vivo methods; in vitro methods are divided into two groups according to chemical reactions between free radicals and antioxidants. The first group is based on the transfer of hydrogen atoms (HAT), the second one on the transfer of electrons (ET). The most frequently used methods in the field of antioxidant power measurement are discussed in this work in terms of their principle, mechanism, methodology, the way of results evaluation and possible pitfalls.
Collapse
|
17
|
Hanuka Katz I, Eran Nagar E, Okun Z, Shpigelman A. The Link between Polyphenol Structure, Antioxidant Capacity and Shelf-Life Stability in the Presence of Fructose and Ascorbic Acid. Molecules 2020; 25:molecules25010225. [PMID: 31935857 PMCID: PMC6983169 DOI: 10.3390/molecules25010225] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2019] [Revised: 01/02/2020] [Accepted: 01/04/2020] [Indexed: 11/16/2022] Open
Abstract
Polyphenols play an important role in the sensorial and health-promoting properties of fruits and vegetables and display varying structure-dependent stability during processing and shelf-life. The current work aimed to increase the fundamental understanding of the link between the stability of polyphenols as a function of their structure, presence of ascorbic acid and fructose and total antioxidant capacity (TAC), using a multi-component model system. Polyphenol extract, used as the multi-component model system, was obtained from freeze-dried, high polyphenol content strawberry (Fragaria × ananassa ‘Nerina’) and twenty-one compounds were identified using high-performance liquid chromatography-mass spectrometry (HPLC-MS). The TAC and the first-order degradation kinetics were obtained, linking the polyphenol stability to its chemical structure, with and without the presence of fructose and ascorbic acid. The TAC (measured by oxygen radical absorption capacity (ORAC) and ferric reducing antioxidant potential (FRAP) assays) was not dramatically affected by storage temperatures and formulation, while polyphenol stability was significantly and structure dependently affected by temperature and the presence of ascorbic acid and fructose. Anthocyanins and phenolic acids were more unstable in the presence of ascorbic acid, while flavonol stability was enhanced by its presence. Shelf life study performed at 37 °C revealed significantly higher stability of purified polyphenols vs. the stability of the same polyphenols in the strawberry extract (multi-component system).
Collapse
|
18
|
Stübler AS, Lesmes U, Heinz V, Rauh C, Shpigelman A, Aganovic K. Digestibility, antioxidative activity and stability of plant protein-rich products after processing and formulation with polyphenol-rich juices: kale and kale–strawberry as a model. Eur Food Res Technol 2019. [DOI: 10.1007/s00217-019-03362-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|