Characterization of Cold‐Pressed Onion, Parsley, Cardamom, Mullein, Roasted Pumpkin, and Milk Thistle Seed Oils

Parry, John; Hao, Zhigang; Luther, Marla; Su, Lan; Zhou, Kequan; Yu, Liangli

doi:10.1007/s11746-007-1076-y

Cited by 42 publications

(51 citation statements)

References 1 publication

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“…The highest values of total phenols were observed in the methanolic fractions of the four varieties of Cucurbita spp with values ranging from 10.68 to 16.32 mg GA/g extract , higher turn that reported by [10] who found values in the methanol fraction of 0.09 to 0.20 mg GA/g extract, pumpkin seeds , and are also higher than those reported by other authors [11] (1.58 mg AG/g flour) and methanol extracts of pumpkin seed oil [12] which reported a value of 0.98 mg AG/g oil. In turn, high concentration of phenolic compounds in the aqueous fraction can be attributed to the presence of proteins and other water soluble compounds containing phenolic rings are obtained , with C. mixta Pangalo (67.48 ± 1.22 mol GA/g extract) and C. maxima Duchesne (53.88 ± 0.58 mol GA/g extract) varieties showed higher content in this fraction.…”

Section: Discussioncontrasting

confidence: 63%

Evaluation Polyphenol Content and Antioxidant Activity in Extracts of Cucurbita spp

Valenzuela

Soro²,

Tauguinas³

et al. 2014

OALib

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It is increasingly evident that oxidative stress and the presence of free radicals are a major cause of many disease processes that may aggravate the disease course, or create new effects that could cause further alterations in patient's health or impair their quality of life. The purpose of this study was to determine the antioxidant activity of extracts from seeds of four varieties of Cucurbita spp: (Hybrid between C. moschata and C. maxima Duchesne ex Lam) Tetsukabuto, C. mixta Pangalo (calabaza rayada), C. moschata (Duchesne ex Lam.) Duchesne ex Poir. (coreanito) and C. maxima Duchesne (calabaza plomo), in relation to their content of total phenols and flavonoids. Extracts of decreasing polarity were obtained using the following solvents: acidified water, methanol, acetone and ethyl acetate, the total phenols and flavonoids were quantified by the FolinCiocalteau and complexation with AlCl3 to 5% respectively. To determine the antioxidant activity of extracts bleaching technique free radical 2,2-diphenyl-1-picrylhydrazyl (DPPH) was used. The total phenolic content was to Tetsukabuto (165.48 ± 0.94), calabaza rayada (275.10 ± 6.86), coreanito (118.79 ± 3.72) calabaza plomo (212.87 ± 7 51) (mol GAE/g of sample). Flavonoids values ranged from (32.03 ± 1.39) and (96.63 ± 1.14) (quercetin mg/g sample). The antioxidant activity expressed as median inhibitory concentration (IC50) showed the following results: Tetsukabuto (117.69 ± 5.81) calabaza rayada (77.75 ± 3.64); coreanito (110.67 ± 1.70), calabaza plomo (87.39 ± 8.64) (mg/ml). A one-way analysis of variance showed significant differences (p < 0.05) among the varieties studied. The results obtained show a clear relationship between the content of total phenolics and flavonoids with antioxidant activity, with C. mixta Pangalo variety showed higher antioxidant activity and can be considered a source of natural antioxidants to produce a beneficial effect on health.

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Section: Discussioncontrasting

confidence: 63%

Evaluation Polyphenol Content and Antioxidant Activity in Extracts of Cucurbita spp

Valenzuela

Soro²,

Tauguinas³

et al. 2014

OALib

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“…[17][18][19][20] The climatic conditions and varieties grown greatly influence the oil and fatty acids content. 20 Oil obtained from the seeds of milk thistle were analyzed with gas chromatography, and the composition of fatty acids in all four samples of milk thistle oil from the areas was prepared and identified ( Table 1).…”

Section: Resultsmentioning

confidence: 99%

Study on Silybum marianum Seed through Fatty Acids Comparison, Peroxide Tests, Refractive Index and Oil Percentage

Nasrollahi¹,

Talebi²,

Nemati³

2016

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In this study, milk thistle seeds were collected from four regions of Iran (Ahvaz, Lorestan, Kazeroon and Zarghan). The oil extracted from seeds of plant using n-hexane solvent extraction soxhlet. The extracted oil was analyzed by gas chromatography and fatty acids were identified in all four samples. In all four samples, the oil refractive index of Milk thistle oil fatty acids vis. Linoleic acid, Oleic acid, Palmitic acid was evaluated. The Peroxide test and determination of oil percentage was performed in Milk thistle seed oil.

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“…According to Parry et al (2006), the yield of extracts may vary depending on the fruit species and the technique used for extraction. Figure 1 shows the percentage of antioxidant activity of extracts from the non-conventional fruits seeds determined as a function of concentration.…”

Section: Dpphmentioning

confidence: 99%

Study of antioxidant activity of non-conventional Brazilian fruits

Luzia

Jorge

2011

J Food Sci Technol

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This study aimed to analyze the proximate composition of seeds from some non-conventional Brazilian fruits, as well as to evaluate the antioxidant activity through DPPH• free radical and to quantify the total phenolic compounds. To obtain the extracts, dried and crushed seeds were extracted with ethanol for 30 min, in a ratio of 1:3 (seeds:ethyl alcohol), under continuous agitation, at room temperature. Then, the mixtures were filtered and the supernatants were subjected to rotary evaporator under pressure reduced to 40°C. The results report that the seeds of non-conventional fruits are remarkable sources of lipids, and the extraction of oil from these seeds could be an alternative for the commercial utilization of waste. They also presented significant percentages of protein and carbohydrates. Ethanol extracts of seeds from nonconventional Brazilian fruits showed relevant antioxidant activity and high amount of phenolic compounds. Therefore Brazilian non-conventional fruits can be used as functional food products or feed.

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Characterization of Cold‐Pressed Onion, Parsley, Cardamom, Mullein, Roasted Pumpkin, and Milk Thistle Seed Oils

Cited by 42 publications

References 1 publication

Evaluation Polyphenol Content and Antioxidant Activity in Extracts of Cucurbita spp

Evaluation Polyphenol Content and Antioxidant Activity in Extracts of Cucurbita spp

Study on Silybum marianum Seed through Fatty Acids Comparison, Peroxide Tests, Refractive Index and Oil Percentage

Study of antioxidant activity of non-conventional Brazilian fruits

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