scholarly journals Rosehip extraction: Process optimization and antioxidant capacity of extracts

2014 ◽  
Vol 12 (4) ◽  
pp. 502-508 ◽  
Author(s):  
George Angelov ◽  
Stanislava Boyadzhieva ◽  
Silviya Georgieva
Keyword(s):  
Antioxidant Capacity ◽  
Antioxidant Properties ◽  
Processing Parameters ◽  
Extraction Process ◽  
Operating Conditions ◽  
Raw Material ◽  
Active Components ◽  
Beneficial Effects ◽  
Fruit Skin ◽  
Capacity Data

AbstractThis article examines the extraction of rosehip to study the recovery of a number of compounds with antioxidant properties (polyphenols, flavonoids, and β-carotene). Two varieties of rosehip, cultivated and wild are used as raw material. A detailed study of the process kinetics at different operating conditions is carried out in order to determine appropriate processing parameters, which results in extracts with higher content of target compounds and higher antioxidant capacity. Data on the concentration of active components in the different parts of the fruit (skin, seeds, and pappi) are also obtained, which gives information about their distribution within the fruit. The comparison of wild and cultivated varieties demonstrates the better quality of the cultivated one. The results are useful for production of improved and enriched rosehip extracts with higher content of antioxidant substances that have proven beneficial effects on the human health.

scholarly journals Environmentally Friendly Methods for Flavonoid Extraction from Plant Material: Impact of Their Operating Conditions on Yield and Antioxidant Properties

2020 ◽  
Vol 2020 ◽  
pp. 1-38 ◽  
Author(s):  
Sara Luisa Rodríguez De Luna ◽  
R. E. Ramírez-Garza ◽  
Sergio O. Serna Saldívar
Keyword(s):  
Antioxidant Properties ◽  
Environmentally Friendly ◽  
Natural Antioxidants ◽  
Extraction Process ◽  
Operating Conditions ◽  
Plant Resources ◽  
Natural Sources ◽  
Operation Conditions ◽  
Kinetic Mechanisms ◽  
High Yields

The flavonoids are compounds synthesized by plants, and they have properties such as antioxidant, anticancer, anti-inflammatory, and antibacterial, among others. One of the most important bioactive properties of flavonoids is their antioxidant effect. Synthetic antioxidants have side toxic effects whilst natural antioxidants, such as flavonoids from natural sources, have relatively low toxicity. Therefore, it is important to incorporate flavonoids derived from natural sources in several products such as foods, cosmetics, and drugs. For this reason, there is currently a need to extract flavonoids from plant resources. In this review are described the most important parameters involved in the extraction of flavonoids by unconventional methods such as ultrasound, pressurized liquid extraction, mechanochemical, high hydrostatic pressure, supercritical fluid, negative pressure cavitation, intensification of vaporization by decompression to the vacuum, microwave, infrared, pulsed electric field, high-voltage electrical discharges, and enzyme-assisted extraction. There are no unified operation conditions to achieve high yields and purity. Notwithstanding, progress has been achieved in the development of more advanced and environmentally friendly methods of extraction. Although in literature are found important advances, a complete understanding of the extraction process in each of the unconventional techniques is needed to determine the thermodynamic and kinetic mechanisms that govern each of the techniques.

scholarly journals Total polyphenol content and antioxidant capacity of allium plants and their correlation with antibacterial and antifungal activity

2021 ◽  
pp. 85-97
Author(s):  
S. S. Satorov ◽  
F. D. Mirzoeva
Keyword(s):  
Antioxidant Activity ◽  
Antioxidant Capacity ◽  
Antioxidant Properties ◽  
Biologically Active ◽  
Diffusion Method ◽  
Active Components ◽  
Total Polyphenols ◽  
Disk Diffusion Method ◽  
Ethanol Extracts ◽  
Antibacterial And Antifungal

Aim. To determine the total polyphenols and antioxidant capacity and their correlation with antimicrobial and fungicidal properties in some species of the genus Allium growing in Tajikistan.Materials and methods. The objects of the study were 15 kinds of the Amaryllidaceae family. Antibacterial onions were studied by the disk diffusion method against 4 types of microorganisms (test strains) and 1 type of yeast fungus. In the presence of total polyphenols, the content in μg of Gallic acid (GA) per ml of plant extract was measured. To determine the antioxidant activity, a solution of ABTS K2S2O8 was used. Trolox was used as a standard.Results. The maximum content of total polyphenols is characterized by ethanol extracts of A. Carolinianum, A. altaicum, A. elatum, A. oschaninii, A. ramosum, A. hymenorhisum. At the same time, their lowest amount was found in the bulbs of A. longicuspis. A. shoenoprasum, which is statistically significantly lower than in all the above-listed species of this plant group. The extracts from the stems of A. carolinianum, A. elatum, and A. pamiricum had the highest antioxidant effect. There is a direct weak correlation between biologically active components with antimicrobial and fungicidal activity in A. oshaninii and A. suworowii, depending on the altitude gradient.Conclusions. The results allow suggesting that the above-ground and underground parts of some wild-growing endemic species of the genus Allium have different degrees of antioxidant activity due to total polyphenols. The content of total polyphenols and the antioxidant capacity of extracts obtained from various plants in different in large ranges. In some cases, there are direct correlations between the content of polyphenols, antioxidant properties, antimicrobial and fungal properties.

Exploring the phytochemical profiles, antioxidant and cytotoxic activities of crude extracts from fresh and dried Tuckeroo (Cupaniopsis anacardioides) fruits

2021 ◽  
Vol 02 ◽  
Author(s):  
Ngoc Minh Quynh Pham ◽  
Quan V. Vuong ◽  
Jennette A. Sakoff ◽  
Michael C. Bowyer ◽  
Christopher J. Scarlett
Keyword(s):  
Antioxidant Capacity ◽  
Antioxidant Properties ◽  
Normal Breast ◽  
Spectrophotometric Analysis ◽  
Biologically Active ◽  
Total Phenolic ◽  
Cytotoxic Activities ◽  
Fruit Skin ◽  
Phytochemical Profiles

Background: Tuckeroo (Cupaniopsis anacardioides) is one of eleven species that belongs to the Sapindaceae family, which is native to Australia. Objective: This study aimed to investigate the phytochemicals, antioxidant capacity, and cytotoxic activity in vitro of Tuckeroo extracts prepared from fresh or dried whole fruits, or just their skin, using acetone (50%) or methanol (50%). Methods: Spectrophotometric analysis was conducted to determine total phenolic content and antioxidant properties, and HPLC analysis was applied to further identified major compounds within the extracts. Cytotoxic activities of the extracts were also tested on ten cancer cell lines including HT29 (colon); U87, SJ-G2 (glioblastoma); MCF-7 (Breast); A2780 (ovarian); H460 (lung); A431 (skin); Du145 (prostate); BE2-C (neuroblastoma); MIA PaCa-2 (pancreas); and one non-tumour derived normal breast cell line (MCF10A). Results: The results showed that the type of samples or solvents used significantly affected the levels of phenolic compounds, antioxidant capacity and cytotoxicity of the extracts. The extract prepared from the fresh skin of the Tuckeroo fruits had the highest level of phenolics, individual major bioactive compounds, antioxidant and cytotoxic properties. Conclusions: Fresh Tuckeroo fruit skin is a rich source of phytochemicals, which are potentially potent biologically active agents for application in the health industries. More studies are recommended to further isolate, identify and assess the anti-cancer potential from extract prepared from Tuckeroo fruit skin.

Thermal and acido-basic stability of antioxidant properties of extracts from cereal and pseudocereal grains

Biologia ◽  
2013 ◽  
Vol 68 (1) ◽  
Author(s):  
Tibor Maliar ◽  
Mária Maliarová ◽  
Ján Kraic ◽  
Miroslav Ondrejovič ◽  
Ivana Pšenáková ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Antioxidant Activities ◽  
Antioxidant Properties ◽  
Raw Material ◽  
Antioxidant Power ◽  
Beneficial Effects ◽  
Barley Cultivars ◽  
Ferric Reducing Antioxidant Power ◽  
The Stability ◽  
High Level

AbstractBeneficial effects of whole grains of cereals and pseudocereals and their fractions to human physiology are well known and broadly published. Especially secondary metabolites, dominantly from the category of phenolics (or polyphenols), beneficially influence the health physiology and/or prevent disease progress. Within the frame of this study, ten genotypes of four cereals or pseudocereals, respectively, were chosen for their antioxidant activity, determined by 2,2-diphenyl-1-picrylhydrazyl (DPPH), ferric reducing antioxidant power (FRAP) and β-carotene-linoleic acid bleaching model (BCLM) mechanisms. Tested genotypes were selected from primary collection based on their antioxidant activity values, as well as higher level of flavonoids or phenolic acids. The stability of antioxidant properties after thermic, acidic, and basic treatments was evaluated. The oat cultivar Sirene and buckwheat cultivar Bogatyr expressed high level of the antioxidant activity, but they lost it due to all types of treatment. Oppositely, treatments increased antioxidant activities in some samples, especially in oat cultivar Maris Oberon, wheat cultivar Ines and Karolinum, or partially in barley cultivars Kompakt (after basic treatment) and Jubilant (acidic and basic treatments). The lack of the antioxidant activity could be observed due to destruction of the key compounds responsible for the antioxidant effect, whereas the increasing activity could be seen due to release of the aglycons from glycosidic forms after treatment. The stability of antioxidant properties could be a valuable parameter of the raw material for manufacturing special foods with functional properties.

scholarly journals Secondary resources of tomato processing as a valuable raw material for obtaining food ingredients

2021 ◽  
Vol 17 (2) ◽  
pp. 40-47
Author(s):  
E. V. Lisovaya ◽  
E. P. Victorova ◽  
A. V. Sverdlichenko ◽  
N. N. Kornen
Keyword(s):  
Antioxidant Activity ◽  
Antioxidant Properties ◽  
Extraction Process ◽  
Biologically Active ◽  
Raw Material ◽  
Food Ingredients ◽  
Tomato Pomace ◽  
Secondary Resources ◽  
Tomato Processing ◽  
Vegetables And Fruits

It is known that enterprises processing vegetables and fruits generate secondary resources (waste), in particular, pomace, in significant volumes. The most valuable, in terms of the composition and content of biologically active macro- and micronutrients, is tomato pomace. Tomato pomace is a valuable source of natural carotenoids, including lycopene, which exhibits high antioxidant activity. The article provides an overview of scientific research aimed at developing methods for extracting carotenoids, including lycopene, from recycled tomato processing resources. It has been shown that, in general, when extracting carotenoids, including lycopene, from secondary resources of tomato processing, various methods of drying and grinding the raw material are used, and then biologically active substances are extracted. It should be noted that the method of pretreatment of the feedstock, the nature of the solvent, the temperature and duration of the extraction process have a significant effect on the antioxidant activity and bioavailability of carotenoids obtained as a result of extraction. It is shown that the use of a pulsed electric field, treatment with enzymes and ultrasonic treatment of tomato pomace allow to intensify the process of extraction of carotenoids and maximally preserve their antioxidant properties. Thus, it can be concluded that tomato pomace is a valuable raw material for obtaining extracts of carotenoids and, first of all, lycopene, and the development of effec- tive modes of the extraction process that ensure the maximum manifestation of antioxidant properties and the bioavailability of the extracted substance is an urgent task.

scholarly journals Optimization of Caffeic Acid Extraction from Dendropanax morbifera Leaves Using Response Surface Methodology and Determination of Polyphenols and Antioxidant Properties

Horticulturae ◽  
2021 ◽  
Vol 7 (11) ◽  
pp. 491
Author(s):  
Ming Zhang ◽  
Ting Bu ◽  
Shuilin Liu ◽  
Sooah Kim
Keyword(s):  
Response Surface Methodology ◽  
Antioxidant Capacity ◽  
Response Surface ◽  
Caffeic Acid ◽  
Antioxidant Properties ◽  
Extraction Process ◽  
Acid Extraction ◽  
Extraction Temperature ◽  
Operating Variables ◽  
Dendropanax Morbifera

The aim of this study was to optimize the extraction method for caffeic acid from the leaves of Dendropanax morbifera using response surface methodology (RSM), and subsequently determine the polyphenolic content and antioxidant capacity of the D. morbifera leaves extracts. The extraction process considered operating variables such as solvent concentration, extraction temperature, and extraction time, which were optimized via Box–Behnken experimental design. In addition, the antioxidant capacity was assessed using 2,2-diphenyl-1-picrylhydrazyl (DPPH) assay. The optimal extraction conditions of 41.23% (v/v) methanol concentration, at 88.61 °C, and 1.86 h produced a maximum caffeic acid (CA) yield of 20.35 mg/g. Additionally, total polyphenols, total tannins, and total flavonoids contents in the leaves extracts of D. morbifera were 32.48 ± 2.05 mg GAE (gallic acid equivalents)/g, 17.61 ± 2.61 mg GAE/g, and 9.14 ± 0.17 mg QE (quercetin equivalents)/g, respectively. The results showed that methanol extracts exhibited an IC50 of approximately 14.3 mg AAE (ascorbic acid equivalent)/g. The results suggested that the extracts of D. morbifera leaves contain potential antioxidant activity, and could be a good source of functional food and used in medicinal applications.

scholarly journals EXTRACTION OF BIOLOGICALLY ACTIVE COMPONENTS FROM FRESHWATER SAPROPEL

2019 ◽  
Vol 3 ◽  
pp. 114 ◽  
Author(s):  
Aneka Klavina ◽  
Agris Auce ◽  
Ivars Vanadzins ◽  
Alise Silova ◽  
Linda Dobkevica
Keyword(s):  
Quality Criteria ◽  
Fulvic Acids ◽  
Extraction Process ◽  
Extraction Methods ◽  
Storage Conditions ◽  
Biologically Active ◽  
Raw Material ◽  
Main Question ◽  
Active Components ◽  
Minimum Requirements

Sapropel has been used for different purposes - in agriculture as fertilizer, in construction as building material, in cosmetic products, in balneology also in medicine and pharmaceuticals as bioactive component. Previously sapropel has been commonly used in raw form and there is no general accepted method or standard method for obtaining sapropel extract. However, most extraction methods follow the same path. Currently, there are few extraction methods using several extractants for obtaining bioactive components from raw sapropel. The most commonly used extractant is alkaline solution. When sapropel is subjected to alkaline environment, the humic and fulvic acids, together with some lipids, vitamins and sugar, present in the raw sapropel become soluble, however other organic and mineral content present in the sapropel remain solid. Alkaline extraction is followed by filtration and water present in the aqueous mixture is evaporated off. Latvian freshwater sapropel can be used as raw material for obtaining sapropel extract and use it as remedy. But the main question for sapropel usage in medicine, balneology and pharmacy is to develop quality criteria for raw sapropel and its extracts. The quality criteria should include minimum requirements for biologically active substance concentration, pH values, antioxidants as well as physical characteristics. In future studies the differences in extract characteristics of the various deposit sites, as well as the stability of the extracts under different storage conditions should be defined; also, there is need for a common approach to develop method of extraction process for active substances from sapropel and analysis procedures of its extract.

scholarly journals Bioaccessible Antioxidants in Milk Fermented byBifidobacterium longumsubsp.longumStrains

2015 ◽  
Vol 2015 ◽  
pp. 1-12 ◽  
Author(s):  
Mérilie Gagnon ◽  
Patricia Savard ◽  
Audrey Rivière ◽  
Gisèle LaPointe ◽  
Denis Roy
Keyword(s):  
Antioxidant Capacity ◽  
Gene Sequence ◽  
Bifidobacterium Longum ◽  
Antioxidant Properties ◽  
Skim Milk ◽  
Fermented Milk ◽  
Gastrointestinal Microbiota ◽  
Beneficial Effects ◽  
Cell Extracts

Bifidobacterium longumsubsp.longumis among the dominant species of the human gastrointestinal microbiota and could thus have potential as probiotics. New targets such as antioxidant properties have interest for beneficial effects on health. The objective of this study was to evaluate the bioaccessibility of antioxidants in milk fermented by selectedB. longumsubsp.longumstrains duringin vitrodynamic digestion. The antioxidant capacity of cell extracts from 38 strains, of which 32 belong toB. longumsubsp.longum, was evaluated with the ORAC (oxygen radical absorbance capacity) method. On the basis of screening and gene sequence typing by multilocus locus sequence analysis (MLSA), five strains were chosen for fermenting reconstituted skim milk. Antioxidant capacity varied among the strains tested (P=0.0009). Two strains ofB. longumsubsp.longum(CUETM 172 and 171) showed significantly higher ORAC values than the other bifidobacteria strains. However, there does not appear to be a relationship between gene sequence types and antioxidant capacity. The milk fermented by each of the five strains selected (CUETM 268, 172, 245, 247, or PRO 16-10) did not have higher initial ORAC values compared to the nonfermented milk samples. However, higher bioaccessibility of antioxidants in fermented milk (175–358%) was observed during digestion.

scholarly journals Antioxidant activity of two varieties of Ocimum basilicum L. for potential use in phytocosmetics

2016 ◽  
Vol 69 (2) ◽  
pp. 7965-7973 ◽  
Author(s):  
Andrea Maritza Vivas Castaño ◽  
Martha Cecilia Beltrán Cifuentes ◽  
Deisy Johanna Cañón Rincón
Keyword(s):  
Antioxidant Activity ◽  
Antioxidant Capacity ◽  
Antioxidant Properties ◽  
Ocimum Basilicum ◽  
Raw Material ◽  
Ferric Thiocyanate ◽  
Type Device ◽  
Cosmetic Industry ◽  
Industrial Use ◽  
Potential Use

This investigation aimed to evaluate two varieties of Ocimum basilicum L., known as Basil, as potential raw material for the cosmetic industry, assessing their antioxidant properties, considering their industrial use in phytocosmetics. The antioxidant activity of essential oils (EOs) for the species Ocimum basilicum var. cinammom and var. album, were obtained by distillation steam using a Clevenger-type device. The antioxidant capacity was evaluated by the method of bleaching radical 1,1-diphenyl-2-picryl hydrazyl (DPPH) and the method of linoleic acid peroxidation (ferric thiocyanate). The EOs of the two species had significant antioxidant properties. The method of DPPH facilitated the evaluation of the antioxidant capacity versus the concentration of EOs, showing an efficient concentration at 10 ppm. On the other hand, the ferric thiocyanate method displayed an efficient inhibition up to 360 h (15 d). The obtained results demonstrated the antioxidant capacity of EOs in the investigation. The capacity was related to their chemical composition (phenylpropane and oxygenated monoterpenes). Therefore, EOs can be considered as a potential source in the field of phytocosmetics.

Optimization of the antioxidant capacity of mangosteen peels (Garcinia mangostana L.) extracts: Management of the drying extraction processes

2020 ◽  
pp. 108201322096263
Author(s):  
Mónica Leon García ◽  
María Hernández Carrión ◽  
Sebastián Escobar ◽  
Aureliano Rodríguez ◽  
Jader Rodríguez Cortina
Keyword(s):  
Antioxidant Capacity ◽  
Optimization Problem ◽  
Process Management ◽  
Extraction Process ◽  
Operating Conditions ◽  
Phenolic Antioxidants ◽  
Ultrasound Assisted Extraction ◽  
Garcinia Mangostana ◽  
Bioactive Materials ◽  
Mangosteen Peel

Mangosteen peel is a source of natural phenolic antioxidants. During processing, the quality and quantity of these compounds in the final product are altered. Sometimes, the important causal relationships are not easy to establish and thus process management is difficult. This is especially true when biochemical changes can occur as in the case of the drying and extraction process of bioactive materials. The aim of this work was to formulate and solve an optimization problem in order to obtain the appropriate values of the operating conditions that maximize the antioxidant capacity of the dried mangosteen peel extracts. The drying process was analyzed under different drying air temperatures (T) (50℃, 60℃, 70℃ and 80℃) at air velocity of 1 ms−1. The extraction process was done under conventional and ultrasound-assisted extraction at 400 W. Antioxidant capacity was measured by 1,1-diphenyl-2-picrylhydrazyl assay. To solve the optimization problem formulated, an artificial neural network was developed. The resolution of the optimization problem allowed the establishment of the optimal operating conditions of the process, maximizing the antioxidant capacity values depending on the characteristics of the process. Results showed that the best operating conditions to maximize the antioxidant capacity of mangosteen peels were a drying temperature of 70℃ and using high-power ultrasound as extraction method.

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