scholarly journals The Large Jellyfish Rhizostoma luteum as Sustainable a Resource for Antioxidant Properties, Nutraceutical Value and Biomedical Applications

Marine Drugs ◽  
2018 ◽  
Vol 16 (10) ◽  
pp. 396 ◽  
Author(s):  
Laura Prieto ◽  
Angélica Enrique-Navarro ◽  
Rosalia Li Volsi ◽  
María Ortega
Keyword(s):  
Fatty Acids ◽  
Antioxidant Activity ◽  
Bioactive Compounds ◽  
Antioxidant Properties ◽  
Positive Association ◽  
Human Potential ◽  
Marine Biotechnology ◽  
In Captivity ◽  
Giant Jellyfish ◽  
Jellyfish Species

Jellyfish is a compartment in the marine food web that often achieves high increases of biomass and that it is starting to be explored for several human potential uses. In this paper, a recently rediscovered large jellyfish, Rhizostoma luteum, is studied for the first time to describe its organic compounds for the isolation and production of bioactive compounds in several fields of food, cosmetics, or biomedical industries. The biogeochemical composition (Carbon, Nitrogen and Sulfur content), protein and phenols content, together with their antioxidant activity, and the analysis of lipid content (identifying each of the fatty acids presented) was analyzed. The results presented here suggested this jellyfish has the highest antioxidant activity ever measured in a jellyfish, but also with high content in polyunsaturated fatty acids (PUFAs), including the essential fatty acid linoleic. The large natural biomass of Rhizostoma luteum in nature, the wide geographical spread, the fact that already its life cycle has been completed in captivity, establishes a promising positive association of this giant jellyfish species and the isolation of bioactive compounds for future use in marine biotechnology.

scholarly journals Physical-chemical, nutritional and antioxidant properties of tucumã (Astrocaryum huaimi Mart.) fruits

2018 ◽  
Vol 39 (4) ◽  
pp. 1517
Author(s):  
Mirelly Marques Romeiro Santos ◽  
Dayane Stéphanie Fernandes ◽  
Camila Jordão Cândido ◽  
Leandro Fontoura Cavalheiro ◽  
Anderson Fernandes da Silva ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Antioxidant Activity ◽  
Vitamin C ◽  
Bioactive Compounds ◽  
Unsaturated Fatty Acids ◽  
Antioxidant Properties ◽  
Nutritional Deficiencies ◽  
Total Dietary Fiber ◽  
Physical Chemical ◽  
High Antioxidant Activity

The Brazilian Cerrado contains a large number of fruit species whose nutritional and physical-chemical properties have not been fully characterized to date. The fruit of tucumã (Astrocaryum huaimi Mart) is ellipsoid with fibrous and gelatinous pulp, unique odor, and has significant economic importance in the region. The objective of this study is to analyze the physical-chemical, nutritional, and antioxidant properties of the fruit of tucumã grown in Minas Gerais state, Brazil. Water content, ashes, proteins, lipids, carbohydrates, total dietary fiber, pH, titratable acidity, soluble solids, vitamin C, minerals, and fatty acids were analyzed. Total phenols, tannins, and antioxidant activity were analyzed using the Folin-Ciocalteau method, Folin-Denis method, and photocolorimetric method of the stable free radical DPPH, respectively, in aqueous, acetone, and ethanol extracts. The most relevant components in the fruit were lipids, fibers, vitamin C, unsaturated fatty acids, iron, potassium, manganese, and bioactive compounds. The analysis of the bioactive compounds revealed that the fruit has high antioxidant activity. The acetone extract presented the highest antioxidant capacity followed by the ethanol and aqueous extracts. The results indicated that the tucumã fruit has high nutritional value as a source of lipids, fibers, calories, vitamin C, minerals, and unsaturated fatty acids, and high antioxidant activity. Therefore, consuming the tucumã fruit pulp may help prevent nutritional deficiencies and chronic non-communicable diseases.

scholarly journals Goats’ Feeding Supplementation with Acacia farnesiana Pods and Their Relationship with Milk Composition: Fatty Acids, Polyphenols, and Antioxidant Activity

Animals ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 515 ◽  
Author(s):  
Delgadillo-Puga ◽  
Cuchillo-Hilario ◽  
León-Ortiz ◽  
Ramírez-Rodríguez ◽  
Cabiddu ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Antioxidant Activity ◽  
Bioactive Compounds ◽  
Feeding Strategies ◽  
Dairy Goats ◽  
Antioxidant Power ◽  
Acacia Farnesiana ◽  
Goat’S Milk ◽  
Conventional Diet ◽  
Goat's Milk

Background: Research efforts have focused on the evaluation of the bioactive quality of animal products (milk, cheese, meat, and other by-products) contrasting various feeding strategies coming from different ecological zones. The study aimed to describe the fatty acids (FA), polyphenols (P), bioactive compounds (BC), and antioxidant activity (AA) of goat’s milk. Methods: Dairy goats were fed with five systems: (1) Grazing; (2) conventional diet (CD); (3) CD + 10% of Acacia farnesiana (AF) pods; (4) CD + 20% AF; and (5) CD + 30% AF. The fatty acid profile, health promoting and thrombogenic indexes were calculated. Milk extracts were evaluated by HPLC to determent phenolic compounds (gallic, caffeic, chlorogenic, and ferulic acids, catechin, epicatechin, and quercetin). Antioxidant activity of goat’s milk extract was evaluated using 2,2-diphenyl-1-picrylhydrazyl radical (DPPH•), oxygen radical absorbance capacity (ORAC), and the ferric reducing antioxidant power (FRAP) assays. Results: Conventional diet showed the highest content of polyunsaturated fatty acids while grazing showed the best n-6:n-3 and the linoleic:alpha linolenic acid ratio. Similarly, grazing and AF boosted the polyphenol content. Conclusions: Acacia farnesiana inclusion in the goats’ diets increased the presence of bioactive compounds and the antioxidant activity while diminishing the cholesterol content of goat’s milk.

scholarly journals Determination of Phenolic Composition and Antioxidant Activity in Flowers and Stems of Rumex Tunetanus Using RP-UHPLC-ESI-QTOF-MS

2018 ◽  
Author(s):  
Jouda Abidi ◽  
Sonda Ammar ◽  
Mohamed Bouaziz
Keyword(s):  
Antioxidant Activity ◽  
Phenolic Compounds ◽  
Bioactive Compounds ◽  
Folk Medicine ◽  
Antioxidant Properties ◽  
Bioactive Compound ◽  
Selective Extraction ◽  
Total Phenolic ◽  
Negative Ionization Mode ◽  
Negative Ionization

The present study was designed to investigate the bioactive compound in Rumextunetanus extracts (polygonaceae), a plant growing in GarâaSejnane region (NW-Tunisia). Hydro-methanol extracts of flowers and stems of Rumextunetanus were analyzed by RP-UHPLC-ESI-QTOF-MS in the negative mode to identify the maximum of bioactive compounds. Applied the aforementioned method, a total of 60 bioactive compounds were characterized for the first time in Rumextunetanus between them, 18 photochemical were firstly identified in the Polygonaceae family in negative ionization mode. Quantification of the identified compounds revealed that quercetin-3-O-glucuronide and (-)-epicatechingallate were the most abundant phenolic compounds in flowers and stems, respectively. Moreover, positive correlations were found between the antioxidant activity measured by DPPH and FRAP assays with the total phenolic compounds (r = 0.98; r = 0.99, respectively) and the abundance of some phenolic subfamilies such as hydroxycinnamic acids, hydroxybenzoic acids, flavonols and flavones with r > 0.86. The compounds displaying significant (P < 0.01) and good correlations with the antioxidant activity (r > 0.93) were hydroxybenzoic acid, rutin, quercetin-3-O-glucuronide, quercetin-3-O-glucoside, quercetin and luteolin-7-O-rutinoside. In addition, the flowers and stems of Rumex tunetanus showed different bioactive compound profiles and significant antioxidant properties of extracts. These results highlight the potential of the RP-UHPLC-ESI-QTOF-MS and MS/MS system to identify untargeted metabolic profiling of Rumex tunetanus. Overall, these results contribute to the clear explanation of the past and current usage of genus Rumex in folk medicine. Future investigations are necessary to develop purified antioxidant extracts, with the application of more selective extraction techniques.

scholarly journals Phenolic Compounds Characterization and Antioxidant Properties of Monocultivar Olive Oils from Northeast Algeria

Agriculture ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 494
Author(s):  
Soulef Boussahel ◽  
Vita Di Stefano ◽  
Claudia Muscarà ◽  
Mariateresa Cristani ◽  
Maria Grazia Melilli
Keyword(s):  
Mass Spectrometry ◽  
Fatty Acids ◽  
Antioxidant Activity ◽  
Phenolic Compounds ◽  
Antioxidant Properties ◽  
Oil Production ◽  
Monounsaturated Fatty Acids ◽  
Free Acidity ◽  
Low Concentration ◽  
Olive Oils

In Algeria, the olive tree is one of the main fruit species and plays a very important socioeconomic role. The objective of this study was firstly, to identify and quantify the phenolics of some Algerian olive oils, and secondly, to assess the antioxidant activity of the samples. The olive oils used in this study were derived from Algerian cultivars, including Tefahi, Gelb Elfarroudj, Chemlal, and imported cultivar Manzanilla and Zebboudj. For this purpose, gas chromatography—mass spectrometry (GC-MS) was used to identify olive oil fatty acids profile, while the individual phenolic compounds were assessed by ultra-high-performance liquid chromatography–electrospray ionization–high-resolution mass spectrometry (UHPLC-HESI-MS). To verify the antioxidant capacity, five in vitro free radical assays were used. Questionable values of particular physico-chemical parameters, such as the high value of free acidity and the low concentration of monounsaturated fatty acids in oil from the Zebboudj cultivar, indicate that improvements in olive cultivation and oil production practices are needed. Gelb Elfarroudj, Tefahi, and Manzanilla oils contain quantities of monounsaturated fatty acids in accordance with EU regulations. The oil obtained from the Zebboudj cultivar is not usable for food purposes due to the high value in free acidity and the low concentration of monounsaturated fatty acids. Tefahi and Manzanilla cultivars have given oils with the best antioxidant activity as compared to other studied cultivars; this is attributable to their composition in bioactive phenolic compounds, such as secoiridoids, which play an important role in human health as scavengers of free radicals. The results are interesting for producers and consumers to promote the culture of olive oils derived in particular from the Tefahi cultivar. However, in order to improve the health qualities of this oil, the agronomic techniques essentially linked to the time of harvesting of the olives destined for oil production must be improved.

Antimicrobial and Antioxidant Compounds in Endophyte Isolate L-003 Obtained from the Aquatic Plant Nelumbo nucifera

2020 ◽  
Vol 10 (2) ◽  
pp. 139-144
Author(s):  
Papiya Chakravorty ◽  
Nidhi Srivastava ◽  
Ahongshangbam Ibeyaima ◽  
Indira P. Sarethy
Keyword(s):  
Antimicrobial Activity ◽  
Antioxidant Activity ◽  
Bioactive Compounds ◽  
Aquatic Plants ◽  
In Silico ◽  
Aquatic Plant ◽  
Ethyl Acetate Extract ◽  
Antioxidant Activities ◽  
Antioxidant Properties ◽  
Nelumbo Nucifera

Background: Microorganisms from understudied habitats have been shown to be an important source of novel bioactive compounds. Endophytes constitute an underexplored group of microorganisms, of which those from aquatic plants have been even less studied. Nelumbo nucifera (lotus) is an aquatic plant with medicinal properties. A screening program for endophytes from N. nucifera by our research group resulted in many microbial isolates, of which isolate L-003 was a promising candidate, exhibiting antimicrobial and antioxidant activities. Objectives: The major objectives were to characterize the endophyte L-003 for its antimicrobial and antioxidant properties, identify the constituent bioactive compounds by GC-MS and characterize their activities further using in silico software. Methods: L-003 was identified by PIBWin software. Antimicrobial activity of the aqueous and organic extracts of culture supernatant of L-003 was checked against a panel of bacteria and fungi. Since the ethyl acetate extract showed the best antimicrobial activity, it was further characterized by thin layer chromatography, an activity confirmed by bioautography and purified by column chromatography. Total antioxidant capacity was assayed by standard techniques. Partially purified metabolite fingerprints were identified by GC-MS analysis. Results: Based on morphological and biochemical analyses, isolate L-003 was identified as belonging to Streptococcus sp. All the organic solvent extracts showed antimicrobial activity. Ethyl acetate extract showed maximum antimicrobial activity against all selected targets and exhibited antioxidant activity too, though butanol and aqueous extracts showed higher antioxidant activity. Two compounds, Acetic acid,-hydroxy, methyl ester and Disulfide, dipropyl, were identified by GC-MS in the metabolite fingerprint. These compounds showed differences in observed and calculated retention indices and could, therefore, be novel. In silico activity, characterization confirmed the antimicrobial and antioxidant properties attributed to these compounds. Conclusion: This is the first study reporting metabolite fingerprinting, identification and characterization of bioactive compounds from an endophytic isolate of Nelumbo nucifera. We conclude that endophytes from aquatic plants could be prospective sources of bioactive compounds, in this case with antimicrobial and antioxidant activities.

scholarly journals Phytochemical Profile and Antioxidant Activity of Nigella sativa L Growing in Morocco

2021 ◽  
Vol 2021 ◽  
pp. 1-12
Author(s):  
Salima Tiji ◽  
Ouijdane Benayad ◽  
Mohamed Berrabah ◽  
Ibrahim El Mounsi ◽  
Mostafa Mimouni
Keyword(s):  
Fatty Acids ◽  
Antioxidant Activity ◽  
Nigella Sativa ◽  
Antioxidant Properties ◽  
Acetone Extract ◽  
Radical Scavenger ◽  
Negative Effect ◽  
Ic50 Values ◽  
Positive Effect ◽  
Β Carotene

Background. Nigella sativa L (NS) is a powerful antioxidant and medicinal plant with many therapeutic applications particularly in traditional medicine for respiratory, gastrointestinal, rheumatic, and inflammatory disorders, as well as cancer. Objective. The aim of this study is to extract the active ingredients from the Moroccan Nigella sativa L and determine its antioxidant properties. We hypothesize that the separation of the compounds from Nigella sativa L has either a positive or negative effect on antioxidants. To study this, we explored different methods to simultaneously extract and separate compounds from Nigella sativa L and performed antioxidant tests (β-carotene and DPPH) for all collected fractions. Methods. Nigella sativa L was hot-extracted by Soxhlet and mother extracts and was separated using silica column chromatography with adequate eluents. Qualitative phytochemical tests to determine the chemical families in Nigella sativa L seeds were performed on the fractions. They were also identified and characterized by GC-MS and HPLC-DAD. Then, antioxidant activity was examined by β-carotene bleaching and DPPH radical scavenger tests. Results and Conclusion. The mother extract hexane FH generated eight different fractions (SH1-8) and the acetone extract FA generated 11 fractions (SA1-11). The FH fractions had a high percentage of fatty acids, and the FA fractions had some interesting polyphenols derivative compounds. Phytochemical screening revealed secondary metabolites such as polyphenols flavonoids, alkaloids, steroids, terpenes coumarins, tannins, and saponins. We found that only two solvents (hexane, acetone) of different polarities could easily extract and simultaneously separate the components of Nigella sativa L. The antioxidant fractions that we collected had close activity to reference compounds but were more active than the corresponding mother extracts. Moreover, several IC50 values of fractions from acetone extract were better than those from hexane. Therefore, the antioxidant activity of Nigella sativa L is more attributed to flavonoids and polyphenols than fatty acids. In summary, the separation of hexane extract presents a more pronounced positive effect for antioxidant tests than acetone extract.

scholarly journals Chocolate making with mint (Mentha x piperite) and blueberry (Vaccinium sp.)

2020 ◽  
Vol 44 (167) ◽  
pp. 35-46
Author(s):  
Giulia Rodrigues Bareta ◽  
Greice Kelly Alves ◽  
Bruno Fischer ◽  
Eunice Valduga ◽  
Geciane Toniazzo Backes ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Moisture Content ◽  
Water Activity ◽  
Functional Properties ◽  
Bioactive Compounds ◽  
Antioxidant Properties ◽  
Chemical Characteristics ◽  
Milk Chocolate ◽  
Physical Chemical ◽  
Dpph Method

Food with functional properties have sparked consumer interest due to  health benefits. In this work, mint and blueberry were chosen to be added to chocolate as a source of  bioactive compounds because they have functional properties. The aim of this study was to evaluate the physical-chemical characteristics (color, moisture content, water activity, acidity, viscosity and pH) and antioxidant properties by the DPPH method of bitter, white and milk chocolate, added with blueberry peel and seeds and hydro-alcoholic mint extract in concentrations of 3 and 0.3%, respectively. Regarding color parameters, the greatest differences were observed in samples containing blueberry. The moisture content and viscosity of chocolate tend to decrease with the presence of mint and blueberry, while water activity tends to increase for bitter and white chocolate. The pH of milk chocolate decreased with the addition of mint and blueberry, while the acidity of milk chocolate increased, as long as for bitter chocolate it decreased and for white chocolate it did not change. Regarding the antioxidant activity, the concentrations of blueberry and mint used were not effective in increasing this property. Therefore, higher concentrations are needed to improve chocolate functional properties.

scholarly journals Characterization of Extra Early Spanish Clementine Varieties (Citrus clementina Hort ex Tan) as a Relevant Source of Bioactive Compounds with Antioxidant Activity

Foods ◽  
2020 ◽  
Vol 9 (5) ◽  
pp. 642
Author(s):  
Laura Cebadera ◽  
Maria Inês Dias ◽  
Lillian Barros ◽  
Virginia Fernández-Ruiz ◽  
Rosa Mª Cámara ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Phenolic Compounds ◽  
Bioactive Compounds ◽  
Soluble Sugars ◽  
Antioxidant Properties ◽  
Daily Intake ◽  
Reducing Power ◽  
Citrus Clementina ◽  
Abundant Fatty Acid

The most relevant nutrients and bioactive compounds (soluble sugars, dietary fiber, ascorbic acid and organic acids, individual phenolic compounds, fatty acids, and tocopherols) as well as antioxidant activity have been characterized in three extra early varieties of clementine (Citrus clementina Hort ex Tan. Basol, Clemensoon and Clemenrubí) cultivated in Valencia (Spain). Clementines are a relevant source of bioactive compounds, such as vitamin C (values around 80 mg/100 g), allowing to satisfy the recommended daily intake with the consumption of a normal portion. Sucrose was the most abundant sugar, and potassium the main mineral while manganese was the least. Fat content was very low (<0.5 mg/100 g), with palmitic acid and α-tocopherol the most abundant fatty acid and vitamin E form, respectively. Flavonoids were the predominant phenolic compounds, with narirutin/naringin and (neo)hesperidin the best represented ones. The antioxidant capacity evaluated by reducing power, DPPH, and β-carotene bleaching inhibition assays was satisfactory with values similar to those reported in other citrus fruits. Thus, this fruit is a relevant source of bioactive compounds with antioxidant properties of interest for consumers and the food industry.

scholarly journals Phytochemical Profile and Antioxidant Properties of Italian Green Tea, a New High Quality Niche Product

Horticulturae ◽  
2021 ◽  
Vol 7 (5) ◽  
pp. 91
Author(s):  
Nicole Mélanie Falla ◽  
Sonia Demasi ◽  
Matteo Caser ◽  
Valentina Scariot
Keyword(s):  
Antioxidant Activity ◽  
Human Health ◽  
Green Tea ◽  
Bioactive Compounds ◽  
Phenolic Content ◽  
Antioxidant Properties ◽  
Cinnamic Acids ◽  
Beneficial Effects ◽  
Lake Maggiore ◽  
Phytochemical Profile

The hot beverage commonly known as tea results from the infusion of dried leaves of the plant Camellia sinensis (L.) O. Kuntze. Ranking second only to water for its consumption worldwide, it has always been appreciated since antiquity for its aroma, taste characteristics, and beneficial effects on human health. There are many different processed tea types, including green tea, a non-fermented tea which, due to oxidation prevention maintains the structure of the bioactive compounds, especially polyphenols; these bioactive compounds show a number of benefits for the human health. The main producers of tea are China and India, followed by Kenya, Sri Lanka, Turkey, and Vietnam, however recently new countries are entering the market, with quality niche productions, among which also Italy. The present research aimed to assess the bioactive compounds (polyphenols) and the antioxidant activity of two green teas (the “Camellia d’Oro” tea—TCO, and the “Compagnia del Lago” tea—TCL) produced in Italy, in the Lake Maggiore district, where nurserymen have recently started to cultivate C. sinensis. In this area the cultivation of acidophilic plants as ornamentals has been known since around 1820. Due to the crisis of the floricultural sector, producers have been trying to diversify their product in order to increase their competitiveness, starting to cultivate Italian tea. Their antioxidant activity was assessed, finding a similar or higher antioxidant capacity than in other green teas, as reported in literature. TCO showed a higher antioxidant activity (42,758.86 mmol Fe2+ kg−1; 532.37 µmol TE g−1 DW; 881.08 µmol TE g−1 DW) and phenolic content (14,918.91 mg GAE 100 g−1 DW) than TCL (25,796.61 mmol Fe2+ kg−1; 302.35 µmol TE g−1 DW; 623.44 µmol TE g−1 DW; 8540.42 mg GAE 100 g−1 DW). Through HPLC, a total of thirteen phenolic compounds were identified quantitatively, including catechins, benzoic acids, cinnamic acids, and flavonols, in TCO while only 9 in TCL, and mainly in lower amounts. Albeit with differences, both teas were found to be of quality proving that Italy could have the possibility to grow profitably C. sinensis.

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