scholarly journals PHYSICOCHEMICAL CHARACTERISTICS, PESTICIDE RESIDUE AND AFLATOXIN CONTAMINATION OF COLD PRESSED PUMPKIN SEED (Cucurbita pepo L.) OILS FROM CENTRAL ANATOLIA REGION OF TURKEY

2017 ◽  
pp. 1-1
Author(s):  
FATMA NUR ARSLAN ◽  
GÖNÜL AKİN ◽  
İBRAHİM YILMAZ
Keyword(s):  
Pesticide Residue ◽  
Cucurbita Pepo ◽  
Physicochemical Characteristics ◽  
Aflatoxin Contamination ◽  
Central Anatolia ◽  
Pumpkin Seed ◽  
Cold Pressed

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 Optimization of the texture of fat-based spread containing hull-less pumpkin (Cucurbita pepo L.) seed press-cake

2011 ◽  
pp. 131-143 ◽  
Author(s):  
Olga Radocaj ◽  
Etelka Dimic ◽  
Vesna Vujasinovic
Keyword(s):  
Press Cake ◽  
Profile Analysis ◽  
Peanut Butter ◽  
Pumpkin Seed ◽  
Texture Profile ◽  
Food Texture ◽  
Hemp Oil ◽  
Cold Pressed ◽  
Texture Attributes ◽  
Instrumental Texture

Hull-less pumpkin seed press-cake, a by-product of the pumpkin oil pressing process, was used to formulate a fat-based spread which resembled commercial peanut butter; both in the appearance and in texture. In this study, response surface methodology was used to investigate the effects of a commercial stabilizer and cold-pressed hemp oil added to the pumpkin seed press-cake, on the texture of the formulations using instrumental texture profile analysis. The responses were significantly affected by both variables tested in a central composite, two factorial experimental design on five levels. Strong and firm spreads, without visible oil separation were formed and had an appearance and texture comparable to commercial peanut butter. In terms of the primary food texture attributes such as hardness, cohesiveness and adhesiveness, determined by the instrumental texture analysis, the optimum combination of variables with 1-1.2% of added stabilizer and 20- 40% of added hemp oil (in the oil phase) produced desirable spreads.

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.

Anthelmintic efficacy of pumpkin seed (Cucurbita pepo Linnaeus, 1753) on ostrich gastrointestinal nematodes in a semiarid region of Paraíba State, Brazil

2012 ◽  
Vol 45 (1) ◽  
pp. 123-127 ◽  
Author(s):  
Thais Ferreira Feitosa ◽  
Vinícius Longo Ribeiro Vilela ◽  
Ana Célia Rodrigues Athayde ◽  
Fábio Ribeiro Braga ◽  
Elaine Silva Dantas ◽  
...  
Keyword(s):  
Cucurbita Pepo ◽  
Gastrointestinal Nematodes ◽  
Semiarid Region ◽  
Pumpkin Seed ◽  
Anthelmintic Efficacy

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 Comparison of the physiological responses of an oil-pumpkin cultivar and hybrid under different nitrogen supply conditions

2019 ◽  
pp. 65-69
Author(s):  
Soma Gáspár Gáspár ◽  
László Zsombik ◽  
Szilvia Veres
Keyword(s):  
Photosynthetic Pigments ◽  
Vegetative Growth ◽  
Cucurbita Pepo ◽  
Nitrogen Nutrition ◽  
Block Design ◽  
Vegetation Period ◽  
Field Studies ◽  
Fruit Production ◽  
Vital Role ◽  
Pumpkin Seed

Cucurbita pepo var. styriaca is known as a medicinal crop among other cucurbits. The benefits of cucurbits fruits are very important in terms of human health, purification of blood, removal of constipation, digestion and supplying energy. The mutant styrian oil-pumpkin (Cucurbita pepo L. convar. Pepo var. styriaca Greb.) exposes a complete lack of lignification of the seed testa. For this reason, this kind of naked pumpkin seed is more consumable as snack than other seeds. The vegetative growth of plants is crucial for fruit production. Nitrogen is the most imperative element for the proper vegetative growth and development of plants which significantly increases and enhances yield and its quality by playing a vital role in the biochemical and physiological functions of plants. Field studies were conducted to study the effect of nitrogen nutrition on certain physiological parameters and their differences between the styrian oil pumpkin hybrid and cultivar (Gleisdorfi Classic cultivar and GL Rustical hybrid). The small block experiment was carried out based on a factorial experiment with a completely randomised block design and four replications in the Research Institute of Nyíregyháza during the summer period of 2017 and 2018. Three different concentrations of nitrogen fertiliser was applied at sowing. Photosynthetic pigments (chlorophyll-a, -b and carotenoids) were analysed as one of the basic factor of efficient photosynthesis. The yields of two genotypes were also measured in all treatments as seed-weight. The contents of photosynthetic pigments were higher in the oil-pumpkin hybrid, mainly the carotenoids in 2018. The vegetation period of 2018 was drier than in 2017, the hybrid oil-pupmkin was more efficient in stress tolerance than the cultivar with higher carotenoids pool. The obtained yield was more pronounced in the oil-pumpkin hybrid than the cultivar in all examined years. The hybrid GL Rustical was more sensitive to nitrogen treatment than the cultivar Gleisdorfi Classic.

scholarly journals Physicochemical Property and Some Vitamin Contents of Telfaria occidentalis Seeds Oil

2021 ◽  
Vol 25 (4) ◽  
pp. 677-681
Author(s):  
B.N. Aguebor-Ogie ◽  
A.C. Ukwuonwo-Ediale ◽  
G.E. Eriyamremu
Keyword(s):  
Chemical Properties ◽  
Acid Value ◽  
Physicochemical Characteristics ◽  
Hot Press ◽  
Pumpkin Seed ◽  
Processing Application ◽  
Light Yellow ◽  
Edo State ◽  
Pumpkin Seed Oil ◽  
Local Farm

Fluted pumpkin, a member of the Cucurbitaceae family, is a versatile fruit and is used for various food processing application in Nigeria. As a result of its versatility, this study was conducted to ascertain the physiochemical characteristics and some vitamins content of its seeds oil. The pumpkin pods were gotten from a local farm in Benin metropolis, Edo state, Nigeria. The extraction of oil was conducted by the use of Seed-2-oil ® hot press machine. Various other standard methods were employed in the study. The physicochemical characteristics showed that the light yellow oil had a refractive index of 1.4710C ± 0.001 and melting point of 19.670C ± 1.80 while the chemical properties revealed acid value (0.64 mg KOH/ g of oil ± 0.05), peroxide value (0.99 Meq of 𝑂2/Kq of  Oil ± 0.01), saponification value (189.73 mg KOH/g of oil ± 5.20) and p-anisidine (0.09 ± 0.01) respectively. The findings for the vitamins revealed vitamin A (781IU ± 1.35), D (1361IU ± 0.14) and K3 (8.145IU ± 0.36) respectively. The findings from this study  revealed that pumpkin seed oil can be a good nutritive enrichment of foods and food products and a possible utilization in pharmaceuticals.

Sign in / Sign up

Export Citation Format

Share Document