scholarly journals Improving the Antioxidant Properties of Calophyllum inophyllum Seed Oil from French Polynesia: Development and Biological Applications of Resinous Ethanol-Soluble Extracts

Antioxidants ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 199
Author(s):  
Mathieu Cassien ◽  
Anne Mercier ◽  
Sophie Thétiot-Laurent ◽  
Marcel Culcasi ◽  
Emilie Ricquebourg ◽  
...  

Tamanu oil from Calophyllum inophyllum L. has long been used in traditional medicine. Ethanol extraction was found the best strategy for recovering bioactive compounds from the resin part of Tamanu oil, yielding two neutral and acidic resins fractions with high phenolics, flavonoids and pyranocoumarins concentrations. A further cascade of LPLC/HPLC separations of neutral and acidic resin fractions allowed identifying fifteen metabolites, and among them, calanolide D and 12-oxocalanolide A (both in neutral fraction) were first identified from a natural source. All these extracts, subfractions and isolated metabolites demonstrated increased free radical scavenging, antioxidant, anti-inflammatory, antimicrobial and antimycobacterial activity compared to Tamanu oil and its de-resinated lipid phase. Overall, these results could promote resinous ethanol-soluble Tamanu oil extracts as a useful multifaceted and renewable medicinal resource.

2013 ◽  
Vol 13 (58) ◽  
pp. 7662-7678
Author(s):  
OB Adu ◽  
◽  
M Omojufehinsi ◽  
MO Esanboro ◽  
DA Abe ◽  
...  

This study was aimed at extracting and purifying T. catappa seed oil with a view to investigating the effect of processing on the composition and antioxidant activity of the oil. Oil was extracted from the dried and roasted T. catappa seed and subjected to degumming and bleaching. The different processed oils were analysed for their fatty acid, phytosterols, and fat soluble vitamins composition. Antioxidant properties of the oils were also determined by measuring the Diphenylpicrylhydrazyl (DPPH) radical scavenging activity and inhibition of heat induced peroxidation. Roasting and processing caused a reduction in acid value, increased peroxide value, but had no effect on the iodine and saponification values of T. catappa oil. Palmitic acid was the most abundant saturated fatty acid (42.466%) while oleic acid was the most abundant unsaturated fatty acid (23.445%). Roasting significantly reduced fatty acid concentration of the oil, and bleaching of both unroasted and roasted oils increased the concentration of fatty acids except linoleic acid. Gamma-sitosterol and Betasitosterol were present in appreciable amounts only in the crude oils. Roasting increased Vitamins A and D concentrations but drastically reduced that of vitamin E. Degumming had no effect on the fat soluble vitamins of T. catappa oil, but bleaching significantly reduced the concentrations of all the vitamins. The DPPH radical scavenging activity of the seed oil was between 26.93 ± 15.42% and 65.47 ± 31.59%. Refining increased the free radical scavenging activity of the unroasted oil, but did not affect the antioxidant activity of roasted oil. The capacity of the oil in preventing heat induced peroxidation was comparable to that of Butylated hydroxytoluene (BHT). Processing of the oil significantly increased its antioxidant activity. Loss of vitamin E did not affect the antioxidant activity of the oil. Thus, suggesting the presence of a heat stable antioxidant in the oil. This study indicated T. catappa seed oil to be potential pharmaceutical oil with good antioxidant characteristics


2021 ◽  
Vol 7 (2) ◽  
pp. 176-185
Author(s):  
Vanessa Isoton ◽  
Wendel Silvestre ◽  
Gabriel Pauletti

Abstract The growth of the wine sector induces an increase in the amounts of waste produced; an alternative to reuse this waste is the extraction of grapeseed oil, which can be used in several applications due to the aroma and antioxidant properties of this oil. This work aimed to evaluate the yield, chemical composition, and antioxidant activity of the seed oil from grapes of the varieties ‘Isabel’ and ‘Rose Niagara’. The oil was extracted using a Soxhlet extractor and hexane as solvent. The oils have had their chemical composition evaluated regarding the presence of fatty acids, which were identified by gas chromatography. The antioxidant capacity of the oils was evaluated by ABTS+ radical scanning. The treatments were the two grape varieties, with five replicates for each treatment. The data underwent analysis of variance and the means were compared by Tukey’s multiple range test at 5% probability. The obtained results of the seed oils showed a statistical difference between varieties. The ‘Isabel’ variety presented a lower oil (19.12 wt.%), content having stearic acid as the main component, with 42.51 wt.%; whereas the ‘Rose Niagara’ (23,15 wt.% yield) variety had oleic acid as the major compound, with 72.08 wt.%. Regarding antioxidant activity, the ‘Isabel’ variety presented itself superior, with a percentage of ABTS+ radical scavenging of 22.11%, whereas the ‘Rose Niagara’ variety presented 20.85%. The seeds of ‘Rose Niagara’ grapes may be employed as a source of oil due to the higher yield and similar antioxidant activity to the seed oil of ‘Isabel’ grapes. Keywords: Fatty acids; Vitis sp; viticulture; antioxidant activity.   Resumo Avaliação da composição lipídica e da atividade antioxidante do óleo de semente de uvas ‘Isabel’ e ‘Niágara rosada’ O crescimento do setor vitivinícola leva a um aumento do volume dos resíduos gerados; uma alternativa reaproveitar estes resíduos é a extração do óleo da semente de uva, que pode ser empregado em diversas áreas, visto que as sementes apresentam propriedades antioxidantes e aromáticas. O objetivo deste trabalho foi avaliar o rendimento, a composição química e a atividade antioxidante do óleo da semente de uva das cultivares ‘Isabel’ e ‘Niágara Rosada’. O óleo foi extraído utilizando um extrator Soxhlet com hexano como solvente. O óleo teve sua composição química avaliada quanto à presença de ácidos graxos, que foram identificados por cromatografia gasosa. A capacidade antioxidante foi avaliada através da varredura do radical ABTS+. Os tratamentos foram as duas variedades de uva, com cinco repetições por tratamento. Os dados de rendimento e de capacidade antioxidante foram submetidos a ANOVA e teste de Tukey a 5% de probabilidade. Os resultados obtidos indicaram diferenças entre as cultivares. A cultivar ‘Isabel’ apresentou menor rendimento de óleo (19,12% m/m), tendo como principal componente o ácido esteárico, com 42,51% m/m, enquanto que a cultivar ‘Niágara Rosada’ (rendimento de 23,15% m/m) apresentou o ácido oleico como o principal componente, com 72,08% m/m. Em relação à atividade antioxidante, a variedade ‘Isabel’ apresentou-se superior, com porcentagem de varredura de 22,11% do radical ABTS, enquanto que a variedade ‘Niágara Rosada’ apresentou 20,85%. As sementes de uvas ‘Niágara Rosada’ podem ser utilizadas como fonte de óleo devido ao maior rendimento e atividade antioxidante semelhante ao óleo de semente de uvas ‘Isabel’. Palavras-chave: Ácidos graxos; Vitis sp; viticultura; atividade antioxidante.   Resumen Evaluación de la composición lipídica y actividad antioxidante del aceite de semilla de uva 'Isabel' y 'Rose Niagara' El crecimiento del sector vitivinícola conlleva un aumento del volumen de residuos generados; una alternativa para reutilizar estos residuos es extraer el aceite de la semilla de uva, que puede ser utilizado en la industria alimentaria, farmacéutica y cosmética, ya que las semillas tienen propiedades antioxidantes y aromáticas. Este trabajo tuvo como objetivo evaluar el rendimiento, la composición química y la actividad antioxidante del aceite de semilla de uvas de las variedades 'Isabel' y 'Rose Niagara'. El aceite se extrajo usando un extractor Soxhlet y hexano como disolvente. Los aceites han tenido su composición química evaluada por cromatografía de gases. También se evaluó la capacidad antioxidante de los aceites extraídos. Los tratamientos fueron las dos variedades de uva, con cinco repeticiones por tratamiento. Los datos se sometieron a ANOVA y prueba de rango múltiple de Tukey con una probabilidad del 5%. Los resultados obtenidos mostraron diferencias estadísticas entre las variedades. La uva "Isabel" presentó un contenido de aceite más bajo, con ácido esteárico como componente principal (42.51% en peso); mientras que el "Rose Niagara" tenía ácido oleico como compuesto principal (72.08% en peso). En cuanto a la actividad antioxidante, la variedad "Isabel" presentó un porcentaje de barrido radical ABTS + del 22.11%, mientras que la variedad "Rose Niagara" presentó el 20.85%. Las semillas de las uvas "Rose Niagara" se pueden utilizar como fuente de aceite debido al mayor rendimiento y la actividad antioxidante similar al aceite de semilla de las uvas "Isabel". Palabras-clave: Ácidos grasos; Vitis sp; viticultura; actividad antioxidante.


Planta Medica ◽  
2009 ◽  
Vol 75 (09) ◽  
Author(s):  
T Leu ◽  
S Soulet ◽  
G Herbette ◽  
R Faure ◽  
JP Bianchini ◽  
...  

2019 ◽  
Author(s):  
Chem Int

Oil extracted from Persea Americana seed was assayed for its physiochemical properties and antioxidant potential using various standard methods. The oil content of the seed was found to be < 10%. Brownish-red color oil was liquid at room temperature, with specific gravity of 0.91±0.02 g/mL. Other physiochemical parameters determined were; acid value (4.51±0.08 mgKOH/g), %FFA (2.26±0.08), peroxide value (2.40±0.57 mgO2/Kg), ester value (31.26±0.03 mgKOH/g), saponification value (35.76±0.07 mgKOH/g) and iodine value (23.5±0.07). The results of the antioxidant activities of the seed oil showed that the flavonoid content (80.00±1.41 mgQE/g) was ~10 folds higher than the phenolic content (8.27±0.06 mgGAE/g). The DPPH radical scavenging value was found to be 51.54±0.25% with an IC50 value of 4.68±0.02 mg/mL and reducing power with an average absorbance of 0.85±0.01 and an IC50 value of 0.001±0.02 mg/mL. Gallic acid showed better antioxidant activities than the oil studied. The results obtained in this study showed that Persea Americana seed oil has nutritional, industrial as well as medicinal potentials.


2011 ◽  
pp. 151-157 ◽  
Author(s):  
Marijana B. Saka ◽  
Julianna F. Gyura ◽  
Aleksandra Mišan ◽  
Zita I. Šereš ◽  
Biljana S. Pajin ◽  
...  

The antioxidant activity of cookies prepared by the addition of sugarbeet dietary fibers was investigated in order to estimate their influence on functional characteristics and shelf-life of cookies. Treated fiber (TF) was obtained from sugarbeet by extraction with sulfurous acid (75 °C at pH = 5.7during 60 min) and treatment with hydrogen peroxide (20 g/LH2O2 at pH = 11 during 24 h). The fiber obtained was dried (80 °C), ground and sieved. TF was investigated in comparison with commercially available Fibrex®. The cookies were prepared by the addition of 0, 7, 9 and 11% of sugarbeet dietary fiber as a substitute for wheat flour in the formulation of cookies. The antioxidant properties of cookies were tested every 7 days using a DPPH (1,1-diphenyl-2-picrylhydrazyl) radical scavenging activity test during 6 weeks of storage at room temperature (23 ± 1 ºC). The obtained results indicated that substitution of wheat flour with Fibrex® in the formulation of cookies upgraded the antioxidant activity, i.e. the functional characteristics of Fibrex®-enriched cookies and could prolong their shelf-life. In contrast, TF did not increase the antioxidant activity of TF-enriched cookies. The better antioxidant activities of Fibrex®-enriched cookies could be attributed to the presence of ferulic acid.


Author(s):  
Imane Rihab Mami ◽  
Noria Merad-Boussalah ◽  
Mohammed El Amine Dib ◽  
Boufeldja Tabti ◽  
Jean Costa ◽  
...  

Aim and Objective: Oxidative stress is implicated in the development and progression of many disease. Some of appropriate actions that could be initiated to taken to resolve the problem of these diseases are search for new antioxidant substances isolated from plants. The aims of this study were to study the intraspecies variations of A. verticillata and C. caeruleus essential oils from 8 locations using statistical analysis, the in vitro antioxidant properties of collective essential oils and in combinations. Materials and Methods: The essential oils were analyzed by GC and GC-MS. The intraspecies variations of the essential oil compositions were discussed using principal component analysis (PCA) and cluster analysis (CA). The antioxidant properties were evaluated DPPH-radical scavenging activity and β-carotene bleaching test. Results: The main components of Ammoides verticillata collective essential oil (Coll EO) were thymol (30.5%), carvacrol (23.2%), p-cymene (13.1%), limonene (12.5%) and terpinene-4-ol (12.3%). While roots of Carthamus caeruleus essential oil were dominated by carline oxide (86.2%). The chemical variability allowed the discrimination of two main Groups for both Coll EOs. A direct correlation between the altitudes, climate and the chemical compositions was evidenced. Ammoides verticulata and Carthamus caeruleus Coll Eos showed good antioxidant activity. In binary mixture, the interaction both Coll Eos and between oils rich of thymol and/or carvacrol with carlina oxide produced the best synergistic effects, compared to individual essential oils and the synthetic antioxidant (BHT). Conclusion: Ammoides verticillata and Carthamus caeruleus essential oil blends can be used as a natural food preservative and alternative to chemical antioxidants.


Author(s):  
Mojgan Azadpour ◽  
Mohammad Mehdi Farajollahi ◽  
Ali Mohammad Varzi ◽  
Pejman Hashemzadeh ◽  
Hossein Mahmoudvand ◽  
...  

Introduction: This study aimed to evaluate the antioxidant property of silymarin (SM) extracted from the seed of Silybum marianum and its anticancer activity on KB and A549 cell lines following 24, 48, and 72 h of treatment. Methods: Ten grams of powdered S. marianum seeds were defatted using n-hexane for 6 hours and then extracted by methanol. The silymarin extracted of extraction components The extracted components of silymarin were measured by spectrophotometric assay and HPLC analysis. 2, 2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging, phenol content, total flavonoid content, and total antioxidant capacity were measured to detect the antioxidant properties of SM. The anticancer activity of the SM on cell lines evaluated by MTT. Results: In HPLC analysis, more than 50% of the peaks were related to silibin A and B. SM was reducedDPPH (the stable free radical) with a 50% inhibitory concentration (IC50) of 6.56 μg/ ml in comparison with butylated hydroxyl toluene (BHT), which indicated an IC50 of ~3.9 μg/ ml.The cytotoxicity effect of SM on the cell lines was studied by MTT assay. The cytotoxicity effect of the extracted silymarin on KB and A549 cell lines was observed up to 80 and 70% at 156 and 78 µg/ml, respectively. The IC50 value of the extracted SM on KB and A549 cell lines after 24 hours of treatment was seen at 555 and 511 µg/ml, respectively. Conclusion: Due to the good antioxidant and anticancer properties of the isolated silymarin, its use as an anticancer drug is suggested.


Author(s):  
Atefeh Jalali ◽  
Mohammadreza Kiafar ◽  
Masih Seddigh ◽  
Mohammad M. Zarshenas

Background: The consumption of natural antioxidants is increasing due to the demand and tendency to natural foods. Punica granatum L. [Punicaceae] is a fruit with various bioactive ingredients. The effectiveness of this plant has been proved against various disorders such as hyperglycemia, hyperlipidemia, blood coagulation, infections, cancer, and dentistry. Among them, there are numerous researches on antimicrobial and antioxidant properties. Subsequently, the present study aimed to compile a review of those properties to outline this herb as a possible natural antioxidant and preservative. Methods: Synchronically, keywords "Punica granatum" with antimicrobial, or antibacterial, antifungal, antiviral, antioxidant and radical scavenging were searched through "Scopus" database up to 31st September 2019. Papers focusing on agriculture, genetics, chemistry, and environmental sciences were excluded and also related papers were collected. Results: Among 201 papers focusing on related activities, 111 papers have dealt with antioxidant activities focusing based on DPPH assay, 59 with antibacterial, on both gram+ and gram- bacteria, 24 with antifungal effects, mostly on Aspergillus niger and Candida albicans, and 7 papers with antiviral activities. There were about 50 papers focusing on in-vivo antioxidant activities of this plant. Conclusion: Taken together, botanical parts of P. granatum have possessed notable radical scavenging and antimicrobial activities that with these properties, this plant can be introduced as a natural safe source of preservative and antioxidant. Accordingly, P. granatum can be applied as excipient with the aforementioned properties in the pharmaceutical and food industries.


2019 ◽  
Vol 16 (4) ◽  
pp. 377-391 ◽  
Author(s):  
B.S. Jayashree ◽  
H. Venkatachalam ◽  
Sanchari Basu Mallik

Flavonoids constitute a large group of polyphenolic compounds that are known to have antioxidant properties, through their free radical scavenging abilities. They possess a chromone (γ- benzopyrone) moiety, responsible for eliciting many pharmacological activities. Even though, natural flavonoids are highly potent, owing to their poor solubility, they are less used. Therefore, attempts have been made to improve their stability, solubility, efficacy and kinetics by introducing various substituents on the flavone ring. For nearly the last two decades, flavones were synthesized in our laboratory by simple, convenient and cost-effective methods, with the knowledge of both synthetic and semi-synthetic chemistry. In this direction, it was considered worthwhile to present an overview on the synthesized flavonoids. This review creates a platform for highlighting various modifications done on the flavone system along with their biological activity.


2020 ◽  
Vol 18 (10) ◽  
pp. 779-790 ◽  
Author(s):  
Alexandre LeBlanc ◽  
Miroslava Cuperlovic-Culf ◽  
Pier Jr. Morin ◽  
Mohamed Touaibia

Background:: The current therapeutic options available to patients diagnosed with Amyotrophic Lateral Sclerosis (ALS) are limited and edaravone is a compound that has gained significant interest for its therapeutic potential in this condition. Objectives: : The current work was thus undertaken to synthesize and characterize a series of edaravone analogues. Methods: A total of 17 analogues were synthesized and characterized for their antioxidant properties, radical scavenging potential and copper-chelating capabilities. Results: Radical scavenging and copper-chelating properties were notably observed for edaravone. Analogues bearing hydrogen in position 1 and a phenyl at position 3 and a phenyl in both positions of pyrazol-5 (4H)-one displayed substantial radical scavenging, antioxidants and copper-chelating properties. High accessibility of electronegative groups combined with higher electronegativity and partial charge of the carbonyl moiety in edaravone might explain the observed difference in the activity of edaravone relative to the closely related analogues 6 and 7 bearing hydrogen at position 1 and a phenyl at position 3 (6) and a phenyl in both positions (7). Conclusion: Overall, this study reveals a subset of edaravone analogues with interesting properties. Further investigation of these compounds is foreseen in relevant models of oxidative stress-associated diseases in order to assess their therapeutic potential in such conditions.


Sign in / Sign up

Export Citation Format

Share Document