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 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.

scholarly journals Impact of pumpkin seed oil and coffee treatment on the characteristics of semi-hard cheese

2019 ◽  
Vol 11 (2) ◽  
pp. 168-173
Author(s):  
Marijana Blažić ◽  
Elizabeta Kralj ◽  
Marija Agičić ◽  
Irena Perković ◽  
Ivana Kolić
Keyword(s):  
Fatty Acids ◽  
Seed Oil ◽  
Unsaturated Fatty Acids ◽  
Saturated Fatty Acids ◽  
Cow Milk ◽  
Lower Amount ◽  
Pumpkin Seed ◽  
Pumpkin Seed Oil ◽  
The Impact ◽  
Hard Cheese

Semi-hard cheese was made from fresh domestic cow milk and treated with pumpkin seed oil and coffee during its ageing. The energy value and composition of the cheese were examined by determining the content of dry matter, minerals, proteins, fat, caffeine and fatty acids. During the ageing period, the cheese was dipped into a sweet, freshly-prepared, high-quality coffee drink and coated with a mixture of milled coffee grains and cold pressed pumpkin seed oil to improve the sensory properties of the cheese, but also to improve its nutritional value. It is considered that treated cheese could have greater nutritional and pro-health properties then untreated cheese, due to nutritional and healing properties of pumpkin seed oil and coffee used during the maturation period. Pumpkin seed oil contains carbohydrates, minerals, proteins, and important unsaturated fatty acids, while coffee is rich in antioxidants and helps in the prevention of type 2 diabetes, Parkinson's and Alzheimer's disease, and high cholesterol. To determine the impact of the treatment, the fatty acid and caffeine contents were determined by the GC-FID and the UPLC-DAD method. The cheese treated with pumpkin seed oil and coffee had a higher amount of unsaturated fatty acids (UFA) and a lower amount of saturated fatty acids (SFA) than the untreated cheese. The proportions of long-chain UFA, such as the C18:2n6c (Omega 6) and the C18:3n3 (Omega 3), were higher in the treated cheese than those in the untreated cheese, as well as the C20:1, the C22:2 and the C24:1, which were not detected in the untreated cheese. Caffeine concentration in the treated cheese was 33.08 mg/L.

scholarly journals Characterization of some vegetable oils in order to use them in the treatment of the varicose veins

2021 ◽  
Vol 26 (2) ◽  
pp. 2370-2374
Author(s):  
NATALIŢA IONESCU (BORDEI) ◽  
◽  
ANDREEA-MIRUNA NEAGU ◽  
ANCA DANIELA RAICIU ◽  
MARIANA POPESCU ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Vegetable Oils ◽  
Wheat Germ ◽  
Seed Oil ◽  
Unsaturated Fatty Acids ◽  
Varicose Veins ◽  
Wheat Germ Oil ◽  
Pumpkin Seed ◽  
Evening Primrose ◽  
Pumpkin Seed Oil

The aim of the paper was to conduct a study regarding the composition of saturated and unsaturated fatty acids for a series of vegetable oils in order to correlate it with their antioxidant activity. The oils were then used in the development of hydrogels based on nanostructured lipid carriers (NLC) with therapeutic effect on varicose veins. Several vegetable oils (pumpkin seed oil, wheat germ oil, evening primrose seed oil, castor seed oil, grape seed and jojoba oil) were analyzed by gas chromatography coupled with mass spectrometry (GC-MS), establishing the profile of saturated and unsaturated fatty acids. Antioxidant activities were determined by the FRAP (Ferric Reducing Antioxidant Power) method and were correlated with the composition ratio of saturated and unsaturated fatty acids. It has been established that pumpkin seed oil and wheat germ oil are most indicated in the development of NLC-based hydrogels.

scholarly journals COMPARATIVE STUDY OF THE BIOLOGICAL VALUE AND OXIDATIVE STABILITY OF WALNUT AND PUMPKIN-SEED OILS

2019 ◽  
Vol 13 (1) ◽  
Author(s):  
T. Nosenko ◽  
T. Koroluk ◽  
S. Usatuk ◽  
G. Vovk ◽  
T. Kostinova
Keyword(s):  
Fatty Acids ◽  
Polyunsaturated Fatty Acids ◽  
Seed Oil ◽  
Oxidation Stability ◽  
Monounsaturated Fatty Acids ◽  
Seed Oils ◽  
Oil Oxidation ◽  
Pumpkin Seed ◽  
Walnut Oil ◽  
Pumpkin Seed Oil

The work is devoted to the study of the biologically active components and the oxidation stability of oils made from non-traditional raw materials such as walnuts and pumpkin seeds. The characteristics that have been determined are the content of phospholipids, carotenoids, chlorophylls, tocopherols, and sterols, the composition of fatty acids and tocopherol homologues, the acidity and oxidation stability of walnut and pumpkin-seed oils. Walnut and pumpkin-seed oils contain a significant amount of polyunsaturated fatty acids, in particular, walnut oil contains linolenic acid and has the ratio ω-3:ω-6 of polyunsaturated fatty acids, which is close to the recommended ratio. The linoleic (polyunsaturated, ω-6) and oleic (monounsaturated) fatty acids dominated in the fatty acid composition of pumpkin-seed oil, and the sum of saturated fatty acids was three times as high as that in walnut oil. An important property of walnut oil is a very high ratio of ω-3:ω-6 polyunsaturated fatty acids, 1:5, which is almost what is recommended by dietitians for the human diet. The difference in the total tocopherol content of the two oil samples was slight, but the composition of tocopherol homologues was very distinctive, i. e. β-tocopherol was the main homo;ogue in the walnut oil and α-tocopherol in the pumpkin-seed oil, respectively. The acidity of the oil samples increased quite rapidly, reaching the value close to 4 mg KOH/g of in 63 days for walnut oil, and in 70 days for pumpkin-seed oil. The oxidative stability of the two oil samples was estimated by changes of the peroxide value during 98 days of oil storage. It has been shown that the induction period of walnut oil oxidation, defined as the start of an increase of the peroxide index, was 56 days, in spite of a high content of polyunsaturated fatty acids, particularly, linolenic acid. The duration of the induction period of pumpkin-seed oil oxidation and the shelf life of this oil were 70 and 98 days, respectively, while the shelf life of walnut oil was about 90 days. The higher resistance of pumpkin-seed oil to oxidative damage is primarily due to the fatty acid composition of this oil, namely to a high content of saturated and monounsaturated fatty acids and almost twice as low a content of polyunsaturated fatty acids compared to that of walnut oil. Both oils can be recommended as a valuable source of polyunsaturated fatty acids, antioxidants, and vitamins for human nutrition.

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 Chemical Properties and Fatty Acid Composition of Palado Seed Oil (Aglaia sp) Extracted Using Chloroform Solvent

2021 ◽  
Vol 18 (4) ◽  
Author(s):  
Syamsul RAHMAN ◽  
Salengke Salengke ◽  
Abu Bakar TAWALI ◽  
Meta MAHENDRADATTA
Keyword(s):  
Fatty Acids ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Acid Composition ◽  
Seed Oil ◽  
Unsaturated Fatty Acids ◽  
Saturated Fatty Acids ◽  
Chemical Properties ◽  
Raw Material ◽  
Food Ingredients

Palado (Aglaia sp) is a plant that grows wild in the forest around Mamuju regency of West Sulawesi, Indonesia. This plant is locally known as palado. Palado seeds (Aglaia sp) can be used as a source of vegetable oil because it contains approximately 14.75 % oil, and it has the potential to be used as food ingredients or as raw material for oil production. The purpose of this study was to determine the chemical properties and the composition of fatty acids contained in palado seed oil (Aglaia sp). The employed method involved the use of palado fruit that had been processed to be palado seed and undergoing flouring process. Palado flour was produced by the extraction process by using chloroform solvent with the soxhlet method. The characteristics of the chemical properties in the oil produced were analyzed by using a standard method, including iodine, saponification, and acid values. The analysis of fatty acid composition was conducted by using gas chromatography. The results showed that palado oil extracted with hexane had an iodine value of 15.38 mg/g, saponification value of 190.01 mg KOH/g, and acids value of 1.961 mg KOH/g. The fatty acid composition of the palado seed oil consisted of saturated fatty acids (41.601 %), which included palmitic acid (41.062 %), myristic acid (0.539 %), and unsaturated fatty acids (45.949 %), which included mono-unsaturated fatty acids (MUFA) such as (22.929 %), oleic acid and poly-unsaturated fatty acids (PUFA), which was linoleic acid (23.020 %).

scholarly journals Phenolics Dynamics and Infrared Fingerprints during the Storage of Pumpkin Seed Oil and Thereof Oleogel

Processes ◽  
2020 ◽  
Vol 8 (11) ◽  
pp. 1412
Author(s):  
Andreea Pușcaș ◽  
Andruța Mureșan ◽  
Floricuța Ranga ◽  
Florinela Fetea ◽  
Sevastița Muste ◽  
...  
Keyword(s):  
Phenolic Compounds ◽  
Seed Oil ◽  
Intermolecular Forces ◽  
Syringic Acid ◽  
Bioactive Molecules ◽  
Pumpkin Seed ◽  
Ambient Storage ◽  
Oxidative Processes ◽  
Pumpkin Seed Oil ◽  
Cold Pressed

Cold-pressed pumpkin seed oil is a valuable source of bioactive molecules, including phenolic compounds. Oleogels are designed for trans and saturated fats substitution in foods, but also demonstrate protection and delivery of bioactive compounds. Consequently, the present work aimed to assess individual phenolic compounds dynamics and infrared fingerprints during the ambient storage of pumpkin seed oil and thereof oleogel. For oleogels production, a 5% ternary mixture of waxes, composed by 3% beewax, 1% sunflower wax and 1% rice bran wax, was used. Phenolic compounds were extracted by traditional liquid–liquid extraction, followed by HPLC-MS quantification. FTIR (400–4000 cm−1) was used for characterizing and monitoring the oxidative stability of all samples and for the evaluation of intermolecular forces between oleogelator mixtures and oil. Specific wavenumbers indicated oxidative processes in stored sample sets; storage time and sample clustering patterns were revealed by chemometrics. Isolariciresinol, vanillin, caffeic and syringic acids were quantified. The main changes were determined for isolariciresinol, which decreased in liquid pumpkin seed oil samples from 0.77 (T1) to 0.13 mg/100 g (T4), while for oleogel samples it decreased from 0.64 (T1) to 0.12 mg/100 g (T4). However, during the storage at room temperature, it was concluded that oleogelation technique might show potential protection of specific phenolic compounds such as syringic acid and vanillin after 8 months of storage. For isolariciresinol, higher amounts are registered in the oleogel (0.411 mg/100 g oil) than in the oil (0.37 mg/100 g oil) after 5 months of ambient temperature storage (T3). Oxidation processes occurred after 5 months storage for both oil and oleogel samples.

scholarly journals Study of Fatty Acids Profile in Kernel Oil of Heynea trijuga Roxb. Ex Sims. (syn. Trichilia connaroides (Wight & Arn.) Bentv.)

2017 ◽  
Vol 2017 ◽  
pp. 1-3
Author(s):  
Ashutosh K. Mittal ◽  
Shishir Tandon
Keyword(s):  
Fatty Acids ◽  
Seed Oil ◽  
Unsaturated Fatty Acids ◽  
Forest Products ◽  
Seed Oils ◽  
Nontimber Forest Products ◽  
Kernel Oil ◽  
Fatty Acids Profile ◽  
Cosmetic Formulations ◽  
Fatty Acid Compositions

Seed oils have been used for centuries by communities as food, medicine, cosmetic applications, and fuel. Recently, there has been a renewed interest in these nontimber forest products specifically for use in cosmetic formulations. The fatty acid compositions of kernel oil of Heynea trijuga was analyzed by GC-FID. The results showed that the oil content was 37.61 percent (w/w) in seed. Seed oil was rich in unsaturated fatty acids. Important fatty acids present were palmitic acid (22.12%), stearic acid (7.51%), oleic acid (25.20%), and linoleic acid (11.65%).

Cold-Pressed Pumpkin Seed Oil Antioxidant Activity as Determined by a DC Polarographic Assay Based on Hydrogen Peroxide Scavenge

2011 ◽  
Vol 88 (12) ◽  
pp. 1875-1882 ◽  
Author(s):  
Stanislava Ž. Gorjanović ◽  
Biljana B. Rabrenović ◽  
Miroslav M. Novaković ◽  
Etelka B. Dimić ◽  
Zorica N. Basić ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Antioxidant Activity ◽  
Seed Oil ◽  
Pumpkin Seed ◽  
Pumpkin Seed Oil ◽  
Cold Pressed

scholarly journals Nutrients, fatty acid composition and antioxidant activity of the flowers and seed oils in wild populations of Paeonia ludlowii

2019 ◽  
pp. 206
Author(s):  
Jie Li, Zai-Hua Wang
Keyword(s):  
Fatty Acids ◽  
Antioxidant Activity ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Acid Composition ◽  
Seed Oil ◽  
Unsaturated Fatty Acids ◽  
Seed Oils ◽  
Wild Populations ◽  
The Impact

Wild Paeonia ludlowii is considered as a traditional ornamental plant, but its flowers and seed oils are edible with important economic values, and the variation of nutrients, fatty acid composition in wild populations is scarcely known. Flowers and seeds of P. ludlowii were collected from two wild populations for evaluating the nutrients in flowers, composition of fatty acids in seed oils and the antioxidant activity. The flowers contained high composition of proteins, carbohydrates, amino acids, total flavonoids, phenolic compounds and essential minerals. Seed oil yield reached up to 21.95% using supercritical CO2 fluid extraction, and it contained 14 fatty acids (up to 93.35 g/100g seed oil), especially the unsaturated fatty acids (oleic acid, linoleic acid and α-linolenic acid) was up to 88.69% with low ω6/ω3 ratios of 0.58. The antioxidant capacity can be arranged in the order of trolox > flower extracts > seed oil according to the DPPH and ABTS free radical assay. Contents of nutrient in flowers and fatty acids in seed oils were significantly different between two wild populations due to the impact of different growing environments. These results indicate that flowers and seed oils of P. ludlowii are potential food resources in human diets.

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