scholarly journals Cold-pressed pumpkin seed (Cucurbita pepo L.) oils from the central Anatolia region of Turkey: Characterization of phytosterols, squalene, tocols, phenolic acids, carotenoids and fatty acid bioactive compounds

2018 ◽  
Vol 69 (1) ◽  
pp. 232 ◽  
Author(s):  
G. Akin ◽  
F. N. Arslan ◽  
S. N. Karuk Elmasa ◽  
I. Yilmaz
Keyword(s):  
Fatty Acids ◽  
Bioactive Compounds ◽  
Phenolic Acids ◽  
Cucurbita Pepo ◽  
Radical Scavenging ◽  
Free Radical Scavenging ◽  
Central Anatolia ◽  
Seed Oils ◽  
Pumpkin Seed ◽  
Cold Pressed

There is a growing interest in cold-pressed oils because they present high contents of bioactive compounds. These oils have the characteristic properties of seeds and are specific products of their regions. The aim of this study was to determine the compositions and contents of fatty acids, phytosterols, squalene, tocols, phenolic acids, carotenoids and phenolic bioactives, and the free radical scavenging as well as antioxidant activities of cold-pressed pumpkin (Cucurbita pepo L.) seed oils. Oil samples from raw pumpkin seeds cultivated in four different central Anatolia regions of Turkey were prepared using a laboratory screw-pressing machine. The results indicate that cold-pressed pumpkin seed oils (PSO) have excellent quality with high contents of polyunsaturated fatty acids (%ΣPUFAs) (53.60 ±0.06-53.73 ±0.05), total phytosterols (782.1±9.7–805.2 ±11.3 mg/100 g oil), squalene (591.3±10.6–632.5±11.4 mg/100 g oil), tocols (97.79 ±0.76?94.29 ±0.34 mg/100 g oil), phenolic acids (22.73 ±0.41–23.98 ±0.46 mg/100 g oil), carotenoids (6.95 ±0.03–7.60 ±0.03 mg/100 g oil), total phenolics (3.96 ±0.13 –5.82±0.15 mg GAE/100 g), free radical-scavenging activity (5.70 ±0.13?7.35 ±0.15 mg GAE/100 g) and total antioxidant activity (26.67±0.97-38.89±1.41 mg GAE/100 g) values. Thus, this study demonstrates that the cold- pressed PSOs from the central Anatolia regions of Turkey are an excellent source of natural bioactive compounds, free of chemical contaminants and nutritious.

scholarly journals Cucurbita maxima Pumpkin Seed Oil: from the Chemical Properties to the Different Extracting Techniques

2018 ◽  
Vol 46 (2) ◽  
pp. 663-669 ◽  
Author(s):  
Leila REZIG ◽  
Moncef CHOUAIBI ◽  
Rosa Maria OJEDA-AMADOR ◽  
Sergio GOMEZ-ALONSO ◽  
Maria Desamparados SALVADOR ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Bioactive Compounds ◽  
Seed Oil ◽  
Unsaturated Fatty Acids ◽  
Chemical Properties ◽  
Seed Oils ◽  
Cucurbita Maxima ◽  
Pumpkin Seed ◽  
Pumpkin Seed Oil ◽  
Cold Pressed

Pumpkin seed oils are rich in bioactive compounds such as tocopherols, sterols, β-carotene, and lutein that have, along with some fatty acids, high nutritional value factors. In addition, it has so far been proven that these compounds have a positive effect on human health. The present study mainly aimed at evaluating the chemical composition and the bioactive compounds of pumpkin (Cucurbita maxima) seed oil of the ‘Béjaoui’ Tunisian cultivar using both cold pressing and solvent extraction methods. The seed oils contained substantial amounts of unsaturated fatty acids, particularly oleic and linoleic acids, with values ranging respectively from 28.19% for cold pressed pumpkin seed oil to 30.56% for pumpkin seed oil extracted by pentane and from 43.86% for pumpkin seed oil extracted by pentane to 46.67% for cold pressed pumpkin seed oil of the total amount of fatty acids. Investigations of different seed oils revealed that extraction techniques had significant effects on the antioxidant activity and the γ-tocopherol. Cold pressed pumpkin seed oil revealed the highest γ-tocopherol content (599.33 mg kg-1) and the highest oxidative stability (3.84 h). However, the chloroform/methanol extracted pumpkin seed oil, which is rich in total phenolics (54.41 mg Gallic Acid Equivalent kg-1), was a more effective scavenger of DPPH radicals (250 µmoles Trolox kg-1) than the poor phenolic pumpkin seed oils extracted by hexane and pentane (110 µmoles Trolox kg-1 vs 100 µmoles Trolox kg-1). Based on its unique seed oil features, cold press extracted pumpkin seed may add great value to product innovation in the industrial, nutritional, cosmetic, and pharmaceutical fields.

scholarly journals Cold pressed versus refined winterized corn oils: quality, composition and aroma

2017 ◽  
Vol 68 (2) ◽  
pp. 194 ◽  
Author(s):  
B. Aydeniz Güneşer ◽  
E. Yılmaz ◽  
S. Ok
Keyword(s):  
Fatty Acids ◽  
Phenolic Compounds ◽  
Bioactive Compounds ◽  
Phenolic Acids ◽  
Sensory Attributes ◽  
Saponification Number ◽  
Total Carotenoid ◽  
Quality Improvements ◽  
Phenolic Contents ◽  
Cold Pressed

The aims of this study were to characterize and compare cold pressed and fully refined winterized corn oils. Free fatty acidity (FFA), peroxide (PV) and p-anisidin (p-AV) values, saponification number, total carotenoid and phenolic contents of cold pressed corn oils were higher than that of the refined winterized corn oils. Linoleic and oleic acids (approximately 53-54% and 30-31%, respectively) were detected as the major fatty acids in both oil samples. Fifteen different sterols with a majority of β-sitosterol, campesterol, and stigmasterol were quantified in both oil samples. Although phenolic compounds were not quantified in the refined winterized oil samples, some flavonoids (hesperidin, rutin) and phenolic acids (gallic, syringic, rosmaniric and trans-ferulic) were detected in the cold pressed oil samples. This study concludes that cold pressed corn oils could be superior in terms of bioactive compounds but still need some quality improvements for sensory attributes.

scholarly journals FID-Gas Chromatography of West-Algerian Cucurbita pepo (or Pumpkin) Seed Oil Extract

2021 ◽  
Vol 2 (3) ◽  
pp. 34-37
Author(s):  
Abdelkrim Berroukche ◽  
Abdelkader Ammam ◽  
Mohamed Terras ◽  
Mohamed Amine Souidi ◽  
Mohamed Chibani ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Gas Chromatography ◽  
Bioactive Compounds ◽  
Cucurbita Pepo ◽  
Seed Oil ◽  
Unsaturated Fatty Acids ◽  
Saturated Fatty Acids ◽  
Pumpkin Seed ◽  
Oil Extract ◽  
Pumpkin Seed Oil

Fatty acid and phytosterol vegetable oils were extracted from seeds of Cucurbita pepo (or pumpkin) into (v/v) hexane. The extract obtained was characterized by the contents of sterols, unsaturated and saturated fatty acids. The content of the bioactive compounds was determined by gas-chromatography FID method. Pumpkin seed oil extracts showed higher content of poly-unsaturated fatty acids (49.10%) than that from saturated fatty acids (28%). Sterols exhibited different molecules dominated by β-sistostérol (47%), Stigmastérol (23.6%) and campesterol (21.5%). Several peaks were present on the FID GC chromatogram of two extracts (fatty acids and sterols respectively). GC spectra confirmed the presence of the predominant bioactive compounds (PUFA, β-sistostérol , Stigmastérol and campesterol). The composition of pumpkin seed oil extract was characterized by FID-GC spectra with maximum at 280 nm.

Flavones and Their Analogues as Bioactive Compounds – An Overview

2019 ◽  
Vol 16 (4) ◽  
pp. 377-391 ◽  
Author(s):  
B.S. Jayashree ◽  
H. Venkatachalam ◽  
Sanchari Basu Mallik
Keyword(s):  
Biological Activity ◽  
Free Radical ◽  
Bioactive Compounds ◽  
Antioxidant Properties ◽  
Radical Scavenging ◽  
Cost Effective ◽  
Free Radical Scavenging ◽  
Polyphenolic Compounds ◽  
Pharmacological Activities ◽  
Poor Solubility

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.

scholarly journals Bioactive Compounds in Sarcocornia and Arthrocnemum, Two Wild Halophilic Genera from the Iberian Peninsula

Plants ◽  
2021 ◽  
Vol 10 (10) ◽  
pp. 2218
Author(s):  
Irene Sánchez-Gavilán ◽  
Esteban Ramírez Chueca ◽  
Vicenta de la Fuente García
Keyword(s):  
Fatty Acids ◽  
Salt Tolerance ◽  
Ferulic Acid ◽  
Iberian Peninsula ◽  
Bioactive Compounds ◽  
Phenolic Acids ◽  
Coastal Marshes ◽  
Esi Ms ◽  
Tinto River ◽  
High Diversity

(1) Background: this study describes bioactive compounds in the following halophytes: Sarcocornia (S. alpini, S. pruinosa, and S. perennis) and Arthrocnemum (A. macrostachyum). The material comes from: coastal marshes in Tinto River, Guadiana River, and some interior provinces from the Iberian Peninsula. (2) Methods: the techniques used were Folin–Ciocalteu, GC-MS, and ESI-MS/MS. (3) Results: Five phenolic acids were found in Sarcocornia: trans-cinnamic, salicylic, veratric, coumaric, and caffeic acids. In addition, in Arthronemum, ferulic acid was also detected. The obtained flavonoids were cyanidin-3-O-arabinoside, luteolin-7-glucoside, dihydroquercetin, and p-coumaroyl-glucoside. They also presented fatty acids, such as palmitic, linoleic, and oleic acids in Sarcocornia, while palmitic, linolenic, and stearic acids were the main fatty acids in A. macrostachyum. (4) Conclusions: the high diversity of the compounds identified confirms the relation between nutritional interest and salt tolerance in halophytes.

scholarly journals Comparative Study on Phytochemical Profiles and Antioxidant Capacities of Chestnuts Produced in Different Geographic Area in China

Antioxidants ◽  
2020 ◽  
Vol 9 (3) ◽  
pp. 190
Author(s):  
Ziyun Xu ◽  
Maninder Meenu ◽  
Pengyu Chen ◽  
Baojun Xu
Keyword(s):  
Free Radical ◽  
Phenolic Compounds ◽  
Phenolic Acids ◽  
Radical Scavenging ◽  
Free Radical Scavenging ◽  
Total Phenolic ◽  
Antioxidant Power ◽  
Mean Values ◽  
Antioxidant Capacities ◽  
Free Phenolic Acids

This study aimed to systematically assess the phenolic profiles and antioxidant capacities of 21 chestnut samples collected from six geographical areas of China. All these samples exhibit significant differences (p < 0.05) in total phenolic contents (TPC), total flavonoids content (TFC), condensed tannin content (CTC) and antioxidant capacities assessed by DPPH free radical scavenging capacity (DPPH), ABTS free radical scavenging capacities (ABTS), ferric reducing antioxidant power (FRAP), and 14 free phenolic acids. Chestnuts collected from Fuzhou, Jiangxi (East China) exhibited the maximum values for TPC (2.35 mg GAE/g), CTC (13.52 mg CAE/g), DPPH (16.74 μmol TE/g), ABTS (24.83 μmol TE/g), FRAP assays (3.20 mmol FE/100 g), and total free phenolic acids (314.87 µg/g). Vanillin and gallic acids were found to be the most abundant free phenolic compounds among other 14 phenolic compounds detected by HPLC. Overall, the samples from South China revealed maximum mean values for TPC, CTC, DPPH, and ABTS assays. Among the three chestnut varieties, Banli presented prominent mean values for all the assays. These finding will be beneficial for production of novel functional food and developing high-quality chestnut varieties.

Preliminary phytochemical analysis and evaluation of antioxidant, cytotoxic and inhibition of lipopolysaccaride - induced NOS (iNOS) expression in BALB/c mice liver by Ziziphus oenoplia Mill. fruit

2017 ◽  
Vol 14 (2) ◽  
Author(s):  
Ramaraj Thirugnanasampandan ◽  
Gunasekar Ramya ◽  
Gunasekaran Bhuvaneswari ◽  
Srinivasan Aravindh ◽  
Suresh Vaishnavi ◽  
...  
Keyword(s):  
Free Radical ◽  
Bioactive Compounds ◽  
Tamil Nadu ◽  
Radical Scavenging ◽  
Free Radical Scavenging ◽  
Phytochemical Analysis ◽  
Fruit Extract ◽  
Ms Analysis ◽  
Wide Range ◽  
Mice Liver

AbstractBackground:Mill. is an ethnomedicinal plant and its fruit has been traditionally used by Puliar tribes of Anamalai Hills, Tamil Nadu, India to treat various ailments. Phytochemical analysis, antioxidant, cytotoxic and inducible nitric oxide synthase (Methods:To explore bioactive compounds present in the ripened fruits, high-performance thin-layer chromatography (HPTLC) and gas chromatography/mass spectrometry (GC–MS) analysis were done. Free radical scavenging, hepatoprotective, inhibition ofResults:Total flavonoid content of ZOFwas estimated as 69 µg/mg catechin equivalent. HPTLC densitogram confirmed the presence of quercetin and GC–MS analysis showed a total of 16 compounds of 87.66 % with quinic acid as a major compound which accounted for 22.29 %. Free radical-scavenging activity of ethanolic fruit extract was ranged from 160.12 to 650.23 µg/mL. An amount of 1.5 µg lipopolysaccharide (LPS)- induced severe inflammation in BALB/c mice liver, followed by treatment with ethanolic fruit extract of 100 µg concentration, exhibited significant hepatoprotection and reverse transcriptase polymerase (RT-PCR) analysis showed downregulation ofConclusions:Findings of the present study prove that ZOF is a rich source of bioactive compounds with a wide range of pharmacological activities. Hence, consumption of this wild edible fruit will be a cost-effective and easily available natural nutritional source for health protection.

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