Antioxidant Activity and Discrimination of Organic Apples (Malus domestica Borkh.) Cultivated in the Western Region of Romania: A DPPH· Kinetics–PCA Approach

Iordănescu, O. A.; Bala, Manju; Iuga, Alina Carmen; Gligor, Dina; Dascălu, Ionuț; Bujancă, G.; Dávid, I.; Hădărugă, Nicoleta G.; Hădărugă, Daniel I.

doi:10.3390/plants10091957

Cited by 9 publications

(7 citation statements)

References 68 publications

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“…1,1-diphenyl-2-picrylhydrazyl free radical (DPPH·) is stable with dark purple prismatic crystals. The scavenging DPPH· method is widely used to evaluate the antioxidant activity of antioxidant components in vitro and quantitatively determine the antioxidant capacity [ 31 ]. This method is based on the fact that DPPH· has a single electron and a strong absorption at 517 nm, and its alcohol solution is purple.…”

Section: Resultsmentioning

confidence: 99%

Ligustrazine as an Extract from Medicinal and Edible Plant Chuanxiong Encapsulated in Liposome–Hydrogel Exerting Antioxidant Effect on Preventing Skin Photoaging

Liu

Xia

et al. 2022

Polymers

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Long-term sunlight exposure will cause the accumulation of free radicals in the skin and lead to oxidative damage and aging, antioxidant drugs have gradually become the focus of research, but there is little research on antioxidant drugs for percutaneous treatment. The purpose of this study was to prepare ligustrazine hydrochloride (TMPZ)-loaded liposome–hydrogel (TMPZ-LG), evaluate its antioxidant properties, and apply it on the skin of mice to observe whether it had preventive and therapeutic effect on the irradiation under the ultraviolet rays, in an attempt to make it into a new kind of delivery through the skin. TMPZ-LG was prepared by the combination of film dispersion and sodium carboxymethylcellulose (2%, CMC-Na) natural swelling method. The release rates in vitro permeation across the dialysis membrane and ex vivo transdermal had both reached 40%; the scavenging effect of TMPZ-LG on 1,1-diphenyl-2-picrylhydrazyl (DPPH) and H2O2 were 65.57 ± 4.13% and 73.06 ± 5.65%; the inhibition rate of TMPZ-LG on malondialdehyde (MDA) production in liver homogenate and anti-low density lipoprotein (LDL) oxidation experiments ex vivo were 15.03 ± 0.9% and 21.57 ± 1.2%. Compared with untreated mice, the skin pathological symptoms of mice coated with TMPZ-LG were significantly reduced after ultraviolet irradiation, and there was statistical significance. The results showed TMPZ-LG could exert good antioxidant activity in vitro and ex vivo; therefore, it is feasible to prevent and treat skin oxidation.

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Section: Resultsmentioning

confidence: 99%

Ligustrazine as an Extract from Medicinal and Edible Plant Chuanxiong Encapsulated in Liposome–Hydrogel Exerting Antioxidant Effect on Preventing Skin Photoaging

Liu

Xia

et al. 2022

Polymers

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“…Our values were higher than that reported by Tarola et al, (2019) who found antioxidant potential in the peel of organic apple Florina 377.3 ± 0.6 µmol/g dw (DPPH assay), while Dobrevska et al (2022) reported data for organic Florina apple 250 to 420 µmol/100 g (DPPH assay). Iordănescu et al (2021) showed antioxidant activity evaluated by the DPPH• method at various time ranges that reveal significant differences between organic and non-organic samples, as well as apple parts. They found that apple extracts had higher antioxidant activities in comparisons of non-organic apples from Romania.…”

Section: Discussionmentioning

confidence: 99%

Non-Polar Fraction Constituents, Phenolic Acids, Flavonoids and Antioxidant Activity in Fruits from Florina Apple Variety Grown under Different Agriculture Management

Petkova¹,

Bileva²,

Valcheva³

et al. 2023

NLSC

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The effect of agricultural management on non-polar compounds, phenolic acids, flavonoids and antioxidant properties in apple fruit of Florina variety was studied. Antioxidant activity was evaluated using four assays (DPPH, ABTS, FRAP and CUPRAC), based on different mechanisms. The current research demonstrated that organically grown apple fruits yielded significantly higher levels of total phenolics, unsaturated fatty acids and antioxidant activity than apples from the conventional conditions. Seven representatives of phenolic acids (gallic, p-coumaric, chlorogenic, vanillic, caffeic, syringic and salicylic) and four flavonoids (quercetin, rutin, catechin and epicatechin) were found in fruits. Chlorogenic, vanillic, salicylic, caffeic acids and catechin were dominated in apples grown in organic orchards. Epicatechin, gallic and syringic acids were in the highest content in conventionally grown sward apples. The highest correlation (r2>0.99) was found between total polyphenols and antioxidant activity by three methods (DPPH, ABTS and FRAP methods). As a result of the organically grown conditions, the quality of the fruits of the Florina apple variety is improved based on the accumulation of bioactive compounds with antioxidant activity. Moreover, thirty-nine volatile components (saturated and unsaturated fatty acids, fatty alcohols, phytosterols and triterpenes) were detected in non-polar apple fraction. Palmitoleic, palmitelaidic, oleic, elaidic, (13E)-octadecenoic, (13Z)-octadecenoic, (11Z)-eicosenoic and (13Z)-eicosenoic, linoleic acid and linolenic acid and ursolic and oleanolic acid acetates dominated in organic apple orchards. Therefore, organic apple provided more phenolic acids, unsaturated fatty acids, ursolic and oleanolic acid acetates and catechin for healthy human nutrition. Keywords: Apples, Antioxidants, Anthocyanins, Organical And Conventional Growing Conditions, Polyphenolic and non-polar compounds

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“…Chemometric tools are powerful techniques for classifying and evaluating the quality of food products. Among them, principal component analysis (PCA) allows for the identification of properties that are involved in the classification of the samples, as well as for the identification of their similarities/dissimilarities, and adulterations or degradations [ 58 , 59 , 60 , 61 , 62 , 63 , 64 , 65 , 66 ]. There are applications of PCA and other multivariate statistical techniques to the classification and evaluation of the quality and adulteration of vegetable and animal products [ 58 , 59 , 61 , 62 , 64 , 65 , 67 , 68 , 69 , 70 , 71 , 72 ].…”

Section: Introductionmentioning

confidence: 99%

FTIR–PCA Approach on Raw and Thermally Processed Chicken Lipids Stabilized by Nano-Encapsulation in β-Cyclodextrin

Hădărugă

Chirilă

Szakal

et al. 2022

Foods

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This study evaluated similarities/dissimilarities of raw and processed chicken breast and thigh lipids that were complexed by β-cyclodextrin, using a combined FTIR–PCA technique. Lipid fractions were analyzed as non-complexed and β-cyclodextrin-complexed samples via thermogravimetry, differential scanning calorimetry and ATR-FTIR. The lipid complexation reduced the water content to 7.67–8.33%, in comparison with the β-cyclodextrin hydrate (~14%). The stabilities of the complexes and β-cyclodextrin were almost the same. ATR-FTIR analysis revealed the presence of important bands that corresponded to the C=O groups (1743–1744 cm−1) in both the non-complexed and nano-encapsulated lipids. Furthermore, the bands that corresponded to the vibrations of double bonds corresponding to the natural/degraded (cis/trans) fatty acids in lipids appeared at 3008–3011 and 938–946 cm−1, respectively. The main FTIR bands that were involved in the discrimination of raw and processed chicken lipids, and of non-complexed and complexed lipids, were evaluated with PCA. The shifting of specific FTIR band wavenumbers had the highest influence, especially vibrations of the α(1→4) glucosidic bond in β-cyclodextrin for PC1, and CH2/3 groups from lipids for PC2. This first approach on β-cyclodextrin nano-encapsulation of chicken lipids revealed the possibility to stabilize poultry fatty components for further applications in various ingredients for the food industry.

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Antioxidant Activity and Discrimination of Organic Apples (Malus domestica Borkh.) Cultivated in the Western Region of Romania: A DPPH· Kinetics–PCA Approach

Cited by 9 publications

References 68 publications

Ligustrazine as an Extract from Medicinal and Edible Plant Chuanxiong Encapsulated in Liposome–Hydrogel Exerting Antioxidant Effect on Preventing Skin Photoaging

Ligustrazine as an Extract from Medicinal and Edible Plant Chuanxiong Encapsulated in Liposome–Hydrogel Exerting Antioxidant Effect on Preventing Skin Photoaging

Non-Polar Fraction Constituents, Phenolic Acids, Flavonoids and Antioxidant Activity in Fruits from Florina Apple Variety Grown under Different Agriculture Management

FTIR–PCA Approach on Raw and Thermally Processed Chicken Lipids Stabilized by Nano-Encapsulation in β-Cyclodextrin

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