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 The influence of the species on the quality, chemical composition and antioxidant activity of pumpkin seed oil

OCL ◽  
2020 ◽  
Vol 27 ◽  
pp. 40
Author(s):  
Ihssan Boujemaa ◽  
Sara El Bernoussi ◽  
Hicham Harhar ◽  
Mohamed Tabyaoui
Keyword(s):  
Antioxidant Activity ◽  
Chemical Composition ◽  
Seed Oil ◽  
Pumpkin Seed ◽  
A Value ◽  
Species Effect ◽  
Pumpkin Seeds ◽  
Antioxidant Potency ◽  
Pumpkin Seed Oil

Oilseed pumpkin seeds are known to be rich in oil and nutrients. Their content in bioactive components gives them some assets that make them beneficial for human health. Although commonly consumed as a snack, pumpkin seeds are ready to claim more uses. The identification of pumpkin species is a major resource in this study. Thus, we worked with three pumpkin species: Cucurbita maxima (CMa), Cucurbita moschata (CMo) and Cucurbita pepo (CP). The species effect on the chemical composition, the content of bioactive compounds and the antioxidant activity was studied. As a result, the analysis of pumpkin seed oil revealed a polyunsaturated fatty acids (PUFAs) content ranging from 52.23% to 57.65%. Our study also revealed that this oil was a good source of phenolic compounds, in particular CMa with a value of 27.52 mg gallic acid equivalents per gram of methanolic extract and 633.51 mg/kg of total tocopherols, which gives it a very strong antioxidant character. In addition, it showed a high antioxidant potency (126.20 ± 20.44) μg/ml for CMa. In this respect, it can be said that the species effect can be a very important factor influencing the nutritional quality of pumpkin seed oil.

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 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.

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