Determination of Antioxidant Capacity, Phenolic Acids, and Fatty Acid Composition of Rapeseed Varieties

Szydłowska‐Czerniak, Aleksandra; Trokowski, Konrad; Karlovits, György; Szłyk, Edward

doi:10.1021/jf100852x

Cited by 96 publications

(103 citation statements)

References 33 publications

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“…Rapeseed (Brassica napus L.) is one of the most important oilseed crops grown around the world [5]. Oil pressed from rapeseeds has been classified as a valuable edible fat, mainly due to the high level (approx.…”

Section: Introductionmentioning

confidence: 99%

Effect of Fertilizer and Storage Period on Oxidative Stability and Color of Rapeseed Oils

Kachel‐Jakubowska¹,

Sujak²,

Krajewska³

2018

Pol. J. Environ. Stud.

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We analysed physical and chemical properties of seeds and oils from different cultivars of winter rapeseeds ('Markus', 'Bios' and 'Feliks') that were cultivated using bio-gas natural manure (digestate) or with a commercially accessible Yara NPK 5014-28 (NPK) fertilizer, both of which were analyzed for element content. Seeds produced without use of fertilizers were taken as control. Prior to cold-pressing of oils, seeds were analyzed for fatty acid content. Cultivar 'Bios' breed with use of digestate showed a lower amount of oleic acid (C18:1), while the 'Feliks' cultivar had higher content of this fatty acid and lower amounts of linoleic acid (C18:2) as compared to respective controls. In the case of the application of NPK fertilizer, the increase in C18:1 was observed for the cultivars 'Markus' and 'Feliks'. In the latter the decrease in the content of C18:2 was observed as compared to control. The oils were analyzed monthly for photosynthetic pigment content and oxidative stability as well as color during a storage period of three months. Oils contained similar amounts of chlorophylls and carotenoids. Oils derived from seeds produced with the use of commercial NPK fertilizer were characterized with higher oxidation stability (induction time) as compared to digestate. Gradual darkening of the oils was observed. Statistical analysis (p<0.05) showed significant correlation between all the color parameters and term of measurements as well as with the applied fertilizer.

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Section: Introductionmentioning

confidence: 99%

Effect of Fertilizer and Storage Period on Oxidative Stability and Color of Rapeseed Oils

Kachel‐Jakubowska¹,

Sujak²,

Krajewska³

2018

Pol. J. Environ. Stud.

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“…The modified DPPH method was used for determination of antioxidant capacity of rapeseed varieties (Szydłowska-Czerniak et al 2010. In brief, 0.01-0.02 mL of methanol extracts of rapeseed was added to 1.99-1.98 mL of methanol and 0.5 mL of DPPH methanolic solution (304.0 μmol/L).…”

Section: Dpph Methodsmentioning

confidence: 99%

“…Five calibration curves for each method were plotted on the same day (Szydłowska-Czerniak et al 2010). The least-squares method was applied to calculate the line's equations: %ABTS=(369.1 ±12.0)×c TE [μmol/mL]+(10.3±1.1) and %DPPH=(668.9± 12.2)×c TE [μmol/mL]+(2.36±0.80), resulting in determination coefficients, 0.9974 and 0.9988, and the relative standard deviations (RSD, n=5) of the slopes: 0.79 and 4.73 %, respectively.…”

Section: Calibration Curvesmentioning

confidence: 99%

“…The total content of polar phenolics in rapeseed is significantly higher (about ten times) than those of insoluble components. Therefore, more polar solvent such as methanol and their aqueous mixture are usually used for extraction of phenolics from rapeseed (Amarowicz et al 2003;Dwiecki et al 2012;Farag et al 2013;Khattab et al 2010;Maltas and Yildiz 2011;Matthäus 2002;Szydłowska-Czerniak et al 2010, 2013. Antioxidants present in rapeseed and its products are important in the prevention and treatment of coronary heart diseases, neurodegenerative and autoimmune diseases, aging, cancers, diabetes, hypertension, and rheumatoid arthritis and exhibit antiradical activity (Szydłowska-Czerniak 2013).…”

Section: Introductionmentioning

confidence: 99%

“…Only few methods, 2,2′-diphenyl-1-picrylhydrazyl (DPPH) (Amarowicz et al 2000(Amarowicz et al , 2003Dwiecki et al 2012;Farag et al 2013;Khattab et al 2010;Matthäus 2002;Szydłowska-Czerniak et al 2010Szydłowska-Czerniak and Tułodziecka 2013;Yoshie-Stark et al 2006), ferric-reducing antioxidant power (FRAP) (Szydłowska-Czerniak et al 2010Szydłowska-Czerniak and Tułodziecka 2013), reducing power (Amarowicz et al 2000(Amarowicz et al , 2003, oxygen radical absorbance capacity (ORAC) (Szydłowska-Czerniak et al 2010), cupric reducing antioxidant capacity (CUPRAC) (Maltas and Yildiz 2011), β-carotene-linoleic acid (Amarowicz et al 2003;Maltas and Yildiz 2011;Matthäus 2002), scavenging ability of hydrogen peroxide (Maltas and Yildiz 2011), electron spin resonance (ESR) (Matthäus 2002), enhanced chemiluminescence (ECL) (Amarowicz et al 2003), photochemiluminescence (PCL) (Amarowicz et al 2003), and assay based on formation of silver nanoparticles (AgNP) (Szydłowska-Czerniak and Tułodziecka 2013), were used for determination of antioxidant capacity of different rapeseed varieties.…”

Section: Introductionmentioning

confidence: 99%

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Optimization of Ultrasound-Assisted Extraction Procedure to Determine Antioxidant Capacity of Rapeseed Cultivars

Szydłowska‐Czerniak

Tułodziecka

2014

Food Anal. Methods

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Ultrasound-assisted extraction (UAE) was applied to extract total antioxidants from two rapeseed varieties. The antioxidant capacity of spring and winter rapeseed cultivars was determined by two different analytical methods: 2,2′-azinobis-3-ethylbenzothiazoline-6-sulfonic acid (ABTS) and 2,2′-diphenyl-1-picrylhydrazyl (DPPH). Effects of three independent variables, sonication time (t), volume of methanol-torapeseed weight ratio (V/m), and concentration of methanol (c) on the antioxidant capacity of rapeseed varieties, were studied by response surface methodology (RSM). Box-Behnken design (BBD) was used to obtain the optimal conditions of the UAE. The optimal UAE conditions were evaluated with an extraction time of 13.8 min, a solvent-to-material ratio of 26.2 mL/g and a solvent concentration of 50.3 % for antioxidant capacity of spring rapeseed cultivar (ABTS=62.7 mmol Trolox equivalent (TE)/100 g, DPPH=38.3 mmol TE/100 g), whereas the predicted optimum t=13.3 min, V/m=29.5 mL/g, and c=38.3 % resulted in ABTS=62.0 mmol TE/100 g, DPPH=48.6 mmol TE/100 g for a winter rapeseed cultivar. Results of ABTS and DPPH determinations correlate with the predicted values (R 2 =0.9435 and 0.9796 for the spring rapeseed variety and 0.9952, 0.9252 for the winter rapeseed variety).

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Primary Metabolites and Polyphenols in Rapeseed (Brassica napus L.) Cultivars in China

Zhang

Chang

Yang

et al. 2019

J Americ Oil Chem Soc

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Defatted meals of 10 rapeseed (Brassica napus L.) varieties were investigated for their total phenolic, phenolic acid (free, esterified, and insoluble-bound forms), and tannin contents. The antioxidant capacities (AC) of methanol extracts from samples were assessed using the 2,2 0diphenyl-1-picrylhydrazyl radical (DPPH•), Folin-Ciocalteu method and ferric reducing antioxidant power (FRAP), and β-carotene-linoleic acid tests. In the fraction of free phenolic acids, sinapic, caffeic, ferulic, syringic, gallic, and p-coumaric acids were identified. In the fraction of esterified phenolic acids, sinapine, sinapoyl glucoside, and disinapoyl gentiobiose were identified. After basic hydrolysis, sinapic, ferulic, cinnamic, and 4-hydroxybenzoic acids were identified, and sinapic acid (SA) constituted 98.3% to 99.6% of the total esterified phenolic acids. Eleven components (sinapic, protocatechuic, pcoumaric, syringic, vanillic, gallic, caffeic, ferulic, salicylic, cinnamic, and 4-hydroxybenzoic acids) in the fraction of insoluble-bound phenolic acids were identified. The AC of the samples correlated with the total phenolic content. Overall, the total phenolics showed a better correlation with AC than the individual phenolic compounds. Moreover, SA, sinapoyl glucoside, and disinapoyl gentiobiose showed a highly significant and strong positive correlation with the AC of rapeseed meals, and the derivatives of cinnamic acid showed a higher correlation with AC than the derivatives of benzoic acid. The change in the canolol content in rapeseeds under microwave irradiation is discussed. The correlation of the canolol formed with SA and its derivatives is discussed.

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Determination of Antioxidant Capacity, Phenolic Acids, and Fatty Acid Composition of Rapeseed Varieties

Cited by 96 publications

References 33 publications

Effect of Fertilizer and Storage Period on Oxidative Stability and Color of Rapeseed Oils

Effect of Fertilizer and Storage Period on Oxidative Stability and Color of Rapeseed Oils

Optimization of Ultrasound-Assisted Extraction Procedure to Determine Antioxidant Capacity of Rapeseed Cultivars

Primary Metabolites and Polyphenols in Rapeseed (Brassica napus L.) Cultivars in China

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