Effect of microwave heating on lipid composition, oxidative stability, color value, chemical properties, and antioxidant activity of gurum (Citrulluslanatus var. Colocynthoide) seed oil

2020 ◽  
Vol 23 ◽  
pp. 101504 ◽  
Author(s):  
Emad Karrar ◽  
Sujitraj Sheth ◽  
Wei Wei ◽  
Xingguo Wang
Keyword(s):  
Antioxidant Activity ◽  
Oxidative Stability ◽  
Microwave Heating ◽  
Lipid Composition ◽  
Seed Oil ◽  
Chemical Properties ◽  
Color Value

scholarly journals Physico-Chemical Properties and Oxidative Stability of Fixed Oil from Plum Seeds (Prunus domestica Linn.)

Biomolecules ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 294
Author(s):  
Ivan Savic ◽  
Ivana Savic Gajic ◽  
Dragoljub Gajic
Keyword(s):  
Antioxidant Activity ◽  
Phenolic Compounds ◽  
Ethyl Acetate ◽  
Oxidative Stability ◽  
Seed Oil ◽  
Chemical Properties ◽  
Soxhlet Extraction ◽  
Hplc Method ◽  
Physico Chemical ◽  
Β Carotene

Storage of a great amount of plum kernel waste becomes a challenge for food industry. In this work, the plum seed was used as a source of fixed oil that can be an ingredient of commercial products. Soxhlet extraction was carried out using the different solvents, such as n-hexane, n-heptane, ethyl acetate, acetone, or chloroform:methanol mixture (2:1 v/v). The highest yield of oil (about 30%) was obtained using n-heptane and n-hexane, while the lowest yield was obtained using ethyl acetate. The analysis of physico-chemical parameters indicated that all samples of plum seed oil have an exceptional quality. Schaal oven test indicated that the fixed oil of plum seed exhibited satisfactory oxidative stability at moderate storage temperatures (up to 65 °C). The composition of phenolic compounds in the oil samples was determined using HPLC method. The most abundant compound of seven identified and quantified phenolic compounds was vanillic acid. The highest content of β-carotene (1.67 mg 100 g−1 fixed oil) spectrophotometrically determined was in the oil extracted with n-hexane. The lowest content of β-carotene (1.26 mg 100 g−1 fixed oil) was determined in the oil extracted with a mixture of chloroform:methanol (2:1 v/v). This oil had the highest antioxidant activity (IC50 value of 4.35 mg mL−1) compared to other oil samples. The antioxidant activity was probably caused by the presence of phenolic compounds. The investigated physico-chemical properties demonstrated that the plum seed oil has a potential for application in the food, cosmetics, and pharmaceutical industry.

Evaluation of green extraction processes, lipid composition and antioxidant activity of pomegranate seed oil

2021 ◽  
Author(s):  
E. Rojo-Gutiérrez ◽  
O. Carrasco-Molinar ◽  
J. M. Tirado-Gallegos ◽  
A. Levario-Gómez ◽  
M. L. Chávez-González ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Lipid Composition ◽  
Seed Oil ◽  
Green Extraction ◽  
Pomegranate Seed Oil ◽  
Extraction Processes ◽  
Pomegranate Seed

scholarly journals Chemical Composition, Oxidative Stability, and Antioxidant Activity of Allium ampeloprasum L. (Wild Leek) Seed Oil

2020 ◽  
Vol 69 (5) ◽  
pp. 413-421 ◽  
Author(s):  
Imededdine Arbi Nehdi ◽  
Hassen Mohamed Sbihi ◽  
Chin Ping Tan ◽  
Saud I. Al-Resayes ◽  
Umer Rashid ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Chemical Composition ◽  
Oxidative Stability ◽  
Seed Oil ◽  
Allium Ampeloprasum

scholarly journals Determining the oxidative stability and quality of tiger nut (Cyperus esculentus) oil and its antioxidant activity during microwave heating

10.14306/407 ◽  
2018 ◽  
Vol 22 (1) ◽  
pp. 52 ◽  
Author(s):  
Atoosa Sobhani ◽  
Abdulkarim Sabo Mohammed ◽  
Fatemeh Ghobakhlou ◽  
Hasanah Mohd Ghazali
Keyword(s):  
Antioxidant Activity ◽  
Oxidative Stability ◽  
Microwave Heating ◽  
Cyperus Esculentus ◽  
El Alto

Introducción: El énfasis en los aceites vegetales con alto contenido de ácido oleico es prominente en las comunidades humanas de todo el mundo. Dicho esto, el alto nivel de este ácido graso monoinsaturado (ácido oleico) en el aceite de chufa (Cyperus esculentus) muestra que es resistente a la estabilidad oxidativa. El propósito de este estudio fue ver si el aceite de chufa puede explotarse para su uso como una fuente alternativa o suplementaria de aceite de cocina de alta calidad y nutritivo.Materiales y métodos: En este estudio se utilizó el Color, RI, viscosidad, PV, p-AV, FFA, TPC, a 233 y 269 nm, comportamiento térmico, TAG y FAC para evaluar el aceite después del calentamiento por microondas.Resultados: El PV, p-AV, FFA, TPC y extinción específica aumentaron durante el calentamiento con microondas. Se detectaron diferencias significativas (p <0,05) para el peróxido, la anisidina, el valor del ácido, los compuestos polares y la extinción específica. Durante el calentamiento con microondas, las cantidades de los valores de peróxido, anisidina y TOTOX aumentaron desde el valor inicial de 3,06, 0,72 y 6,84 para el aceite no calentado a 4,11, 10,02 y 18,25 después de 15 minutos de calentamiento respectivamente. El ácido graso libre cambió de 0,10 a 0,12% durante el calentamiento con microondas. La cantidad de ácidos grasos insaturados disminuyó significativamente durante el calentamiento. Durante el calentamiento con microondas, la actividad antioxidante disminuyó significativamente (p <0,05) de 68,60 a 19,66 (para el aceite de chufa sin calentar y después de 15 minutos de calentamiento en altas concentraciones mediante la prueba de DPPH, respectivamente).Conclusiones: Esto puede indicar que el aceite de chufa puede soportar tratamientos térmicos en métodos culinarios como la fritura y se puede concluir que el aceite de chufa es estable en los procesos de calentamiento, especialmente la fritura.

scholarly journals Nutritional quality and phytochemical contents of cold pressed oil obtained from chia, milk thistle, nigella, and white and black poppy seeds

2020 ◽  
Vol 71 (3) ◽  
pp. 368
Author(s):  
E. Rokosik ◽  
K. Dwiecki ◽  
A. Siger
Keyword(s):  
Antioxidant Activity ◽  
Fatty Acid ◽  
Nutritional Quality ◽  
Seed Oil ◽  
Nigella Sativa ◽  
Chemical Properties ◽  
Milk Thistle ◽  
Chia Seed ◽  
Chia Seed Oil ◽  
Cold Pressed

Cold pressed oils obtained from chia (Salvia hispanica L.), milk thistle (Silybum marianum L.), nigella (Nigella sativa L.), and white and black varieties of poppy (Papaver somniferum L.) seeds were character­ized. The nutritional quality was determined based on the analysis of fatty acids, tocochromanol and phytos­terol contents, as well as antioxidant activity and general physico-chemical properties. Among the oils analyzed the fatty acid composition most beneficial for health was found in chia seed oil, with 65.62% of α-linolenic acid and the n-6:n-3 fatty acid ratio of 1:3.5. Other oils studied were rich sources of linoleic acid (18.35-74.70%). Chia seed oil was also distinguished by high contents of phytosterols, mainly β-sitosterol (2160.17 mg/kg oil). The highest content of tocochromanols was found in milk thistle oil with dominant α-tocopherol (530.2 mg/kg oil). In contrast, the highest antioxidant activity was recorded for nigella oil (10.23 μM Trolox/g), which indi­cated that, in addition to tocopherols, other antioxidants influenced its antioxidant potential.

scholarly journals Effect of extraction solvents on the oxidative stability of chia seed (Salvia hispanica L.) oil stored at different storage temperatures

Food Research ◽  
2020 ◽  
Vol 4 (6) ◽  
pp. 2103-2113
Author(s):  
I. Ishak ◽  
M.A. Ghani ◽  
N.N.S. Nasri
Keyword(s):  
Antioxidant Activity ◽  
Oxidative Stability ◽  
Seed Oil ◽  
Control Sample ◽  
Seed Oils ◽  
Scavenging Activity ◽  
Chia Seed ◽  
Extraction Solvents ◽  
Chia Seed Oil ◽  
Storage Temperatures

This study consists of two parts. The first part is to identify the fatty acid composition of chia seed oils obtained by Soxhlet method using acetone and hexane as extraction solvents with different extraction times including acetone 4 hrs (A4), acetone 8 hrs (A8) and hexane 8 hrs (H8) as a control. Next, the oxidative stability and antioxidant activity of chia seed oils stored at different temperatures (25°C and 40°C) for 18 days were evaluated. From the study, chia seed oil (A8) had the highest content of α-linolenic acid (67.79%) with significant difference (p < 0.05) followed by other oil samples that were extracted using acetone and hexane for 4 hrs (67.54%) and 8 hrs (66.38%), respectively. The oxidative stability of chia seed oil was determined by peroxide value, p-anisidine value and TOTOX value. The results revealed that chia seed oils stored at room temperature (25°C) had higher oxidative stability compared to oil samples stored at 40°C. Elevated temperature strongly affected lipid oxidation. The control sample had higher oxidative stability than acetone-extracted chia seed oils. Meanwhile, antioxidant activity using DPPH (2,2-diphenyl-1-picrylhydrazyl) scavenging activity test was also carried out. Antioxidant activity of chia seed oil extracted by acetone had higher radical scavenging activity inhibition (p < 0.05) than the control sample at both temperatures (25°C and 40° C).The results confirmed that chia seed oil obtained by acetone had higher polyunsaturated fatty acids and lower oxidative stability than hexane. In conclusion, chia seed oil extracted by hexane showed better oxidative stability at different storage temperatures.

scholarly journals Physico-chemical properties and fatty acid composition of Chrozophora tinctoria seeds as a new oil source

2019 ◽  
Vol 70 (4) ◽  
pp. 328 ◽  
Author(s):  
S. Hazrati ◽  
S. Nicola ◽  
S. Khurizadeh ◽  
A. Alirezalu ◽  
H. Mohammadi
Keyword(s):  
Fatty Acids ◽  
Antioxidant Activity ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Acid Composition ◽  
Seed Oil ◽  
Chemical Properties ◽  
Total Phenolic ◽  
High Unsaturated Fatty Acid ◽  
Physico Chemical

Chrozophora tinctoria L., usually known as dyer’s Croton, Turnsole or Giradol, has been used in various medicinal and food products for many years. However, no comprehensive research has been undertaken to assess its potential as a new seed oil crop. Therefore, the current study examined the fatty acid composition, physico-chemical properties and antioxidant activity of C. tinctoria seeds, grown in the southwest of Iran. The seed oil content was found to be 26.40%. The extracted oil was analyzed for fatty acid composition using gas chromatography (GC). The results showed that unsaturated fatty acids accounted for almost 91% of the total fatty acids. Linoleic acid was the dominant fatty acid (76.68%), followed by oleic acid (13.99%) and palmitic acid (5.32%). δ-tocopherol was the major tocopherol in the oil, representing 70 mg/100 g oil. The total phenolic content (151.70 mg GAE per 100 g oil) and total flavonoid content (1.17 mg QE oil) were also determined in the extracted oil. The antioxidant activity was measured by a DPPH assay and expressed as 45% of the seed oil. Due to its high oil yield and high unsaturated fatty acid content, C. tinctoria could be regarded as a new source of edible oil.

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