Antioxidant capacity, total phenolics, glucosinolates and colour parameters of rapeseed cultivars

Szydłowska‐Czerniak, Aleksandra; Bartkowiak-Broda, I.; Karlović, İgor; Karlovits, György; Szłyk, Edward

doi:10.1016/j.foodchem.2011.01.040

Cited by 63 publications

(55 citation statements)

References 25 publications

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“…The AC and TPC in the discussed extracts of two spring Brassica napus cultivars were somewhat lower, when compared to FRAP (3190–7641 µmol TE/100 g), DPPH (3194–31 245 µmol TE/100 g), and TPC (756–2228 mg SA/100 g) results for different rapeseed varieties studied previously . Also, similar results of TPC in rapeseed samples (773–3540 mg/100 g) were reported by others .…”

Section: Resultssupporting

confidence: 83%

“…The traditional solvent extraction of bioactive compounds from natural sources has various disadvantages, such as large amount of solvent, long time, low yield and high extraction temperature. Conventional extraction techniques employed to extract antioxidants from Brassica napus cultivars were solid–liquid and Soxhlet extractions, which needed high amounts of different toxic solvents . Therefore, ultrasound‐assisted extraction (UAE) is a promising technique for the effective and economical extraction of natural antioxidants.…”

Section: Introductionmentioning

confidence: 99%

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Application of response surface methodology to optimize ultrasound‐assisted extraction of total antioxidants from Brassica napus cultivars

Szydłowska‐Czerniak

Tułodziecka

2014

Euro J Lipid Sci & Tech

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Response surface methodology was used to evaluate the quantitative effects of two independent variables, namely solvent polarity and ratio of ultrasound power to sonication time, on the antioxidant capacity and total phenolics content (TPC) in two spring rapeseed cultivars: Feliks and Markus. The mean FRAP, DPPH, and TPC results ranged between 1082–5104 µmol Trolox (TE)/100 g and 1203–5528 µmol TE/100 g, 5373–17417 µmol TE/100 g and 3015–15 989 µmol TE/100 g, 252–1258 mg sinapic acid (SA)/100 g and 282–1292 mg SA/100 g for Feliks and Markus varieties, respectively. The quadratic effect of solvent polarity on FRAP, DPPH, and TPC in the examined extracts was about 11, 2, and 7 times greater, respectively, than the quadratic effect of ultrasound power to sonication time ratio. The predicted optimum solvent polarity = 56.8 and 55.6, and US power/US time = 4.0 and 4.2 W/min resulted in FRAP = 5143 µmol TE/100 g and 5503 µmol TE/100 g, DPPH = 16 623 µmol TE/100 g and 15 839 µmol TE/100 g, TPC = 1250 mg SA/100 g and 1259 mg SA/100 g in extracts obtained from Feliks and Markus cultivars, respectively. Practical applications: Bioactive compounds extracted from rapeseed varieties provide health benefits and have antioxidative properties. The application of ultrasound resulted in an increase in antioxidant extraction from rapeseed. Therefore, it seems worth while to consider the application of ultrasound in the fat industry for the production of rapeseed oils with a high content of antioxidants. The ultrasound‐assisted extraction of antioxidants from rapeseed would make it possible to improve technological processes and consequently reduce processing times and costs. Moreover, the analytical methods used, FRAP, DPPH, and Folin–Ciocalteu, do not require specialized equipment and can be employed by the fat industry laboratories to assess the antioxidant capacity and total phenolics in rapeseed cultivars. Response surface methodology was used to evaluate the quantitative effects of two independent variables, namely solvent polarity and ratio of ultrasound power to sonication time, on the antioxidant capacity and total phenolics content in two spring rapeseed cultivars. The application of ultrasound resulted in an increase of antioxidant extraction from rapeseed. The low‐cost ultrasonic technology can be employed by the oil processing industry for producing rapeseed oil with a high content of bioactive compounds.

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Section: Resultssupporting

confidence: 83%

Section: Introductionmentioning

confidence: 99%

Application of response surface methodology to optimize ultrasound‐assisted extraction of total antioxidants from Brassica napus cultivars

Szydłowska‐Czerniak

Tułodziecka

2014

Euro J Lipid Sci & Tech

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“…Phytochemical research has established that the oil is a good source of bioactive compounds, such as polyphenols, phytosterols and tocopherols, which are important in the prevention and treatment of many diseases (Szydlowska-Czerniak et al, 2011).…”

Section: Quantitative Ethnobotanical Analysesmentioning

confidence: 99%

An ethnobotanical survey of traditionally used plants on Suva planina mountain (south-eastern Serbia)

Jarić

Mačukanović-Jocić

Djurdjević

et al. 2015

Journal of Ethnopharmacology

169

102

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“…Rapeseed has the highest phenolic content among to other oilseeds (soybean, sunflower), about tenfold, however, phenols remain in the meal after pressing [16]. Phenol compounds, including sinapinic acid and other derivatives, show high antioxidant activity under in vitro conditions [17]. The main phenol compound of rapeseed is sinapinic acid, which makes up 70% of the total content of free phenolic acids and their derivatives such as sinapine [18].…”

Section: Introductionmentioning

confidence: 99%

Antioxidant (Tocopherol and Canolol) Content in Rapeseed Oil Obtained from Roasted Yellow‐Seeded Brassica napus

Siger

Gawrysiak‐Witulska

Bartkowiak-Broda

2016

J Americ Oil Chem Soc

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In this study, the effect of temperature (140, 160, 180 °C) and roasting time (5, 10, 15 min) on the bioactive compound content (canolol, tocopherol and plastochromanol-8) of cold-pressed oil from yellow-seeded rapeseed lines of different colors was investigated. Roasting increased the peroxide value in the seed oils compared to the oils from the control samples. However, roasting did not affect the acid values of the oils, which were 1.15–1.47 and 1.30–1.40 mg KOH/g, for line PN1 03/1i/14 (yellow seeds) and line PN1 563/1i/14 (brown seeds), respectively. In this study, the seeds of line PN1 03/1i/14 were characterized by different changes in canolol content during roasting than the seeds of PN1 563/1i/14. There was a 90-fold increase in canolol for the line PN1 03/1i/14 (768.26 µg/g) and a 46-fold increase for the line PN1 563/1i/14 (576.43 µg/g). Changes in tocopherol and PC-8 contents were also observed. There was an increase in the contents of γ-T and PC-8 in the oils obtained from the seeds roasted at 180 °C for 10 and 15 min. γ-T content increased by 17–18% after 15 min of roasting, whereas the PC-8 content increased twofold.

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Antioxidant capacity, total phenolics, glucosinolates and colour parameters of rapeseed cultivars

Cited by 63 publications

References 25 publications

Application of response surface methodology to optimize ultrasound‐assisted extraction of total antioxidants from Brassica napus cultivars

Application of response surface methodology to optimize ultrasound‐assisted extraction of total antioxidants from Brassica napus cultivars

An ethnobotanical survey of traditionally used plants on Suva planina mountain (south-eastern Serbia)

Antioxidant (Tocopherol and Canolol) Content in Rapeseed Oil Obtained from Roasted Yellow‐Seeded Brassica napus

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