Determination of the Phenolic Composition and Antioxidant Activity of Pear Extracts

Liaudanskas, Mindaugas; Zymonė, Kristina; Viškelis, Pranas; Klevinskas, Almantas; Janulis, Valdimaras

doi:10.1155/2017/7856521

Cited by 37 publications

(28 citation statements)

References 44 publications

(55 reference statements)

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“…The highest levels of DPPH and FRAP antioxidant activities (7.70 mmol Trolox/kg DW and 15.64 mmol Trolox/kg DW, respectively) were found in the ‘Radana’ fruits, while the ‘Conference’ cultivar was characterized by the lowest results: 3.98 and 4.37 mmol Trolox/kg DW, respectively. The obtained results were lower than those determined by Liaudanskas et al [ 19 ]. In their study on ‘Conference’ pears, the DPPH antioxidant capacity reached over 40 µmol TE/g DW, while the FRAP activity was approximately 30 µmol TE/g DW.…”

Section: Resultscontrasting

confidence: 89%

“…Considerably variable amounts of phenolics in different pear cultivars were reported previously [ 16 , 17 ]. In research on the ‘Conference’ variety, Cebulak et al [ 18 ] found significantly higher levels of phenolic compounds (3190.0 mg/100 g DW), while results obtained by Liaudanskas et al [ 19 ] were much lower (710 mg/kg DW). Compared to other stone fruits, the polyphenolic content in pears is similar to that in apples (1654.8–5314.1 mg/kg DW) [ 20 ] and quince (2609.50 mg/100 g DW) [ 21 ].…”

Section: Resultsmentioning

confidence: 99%

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Bioactive Compounds and Health-Promoting Properties of Pear (Pyrus communis L.) Fruits

et al. 2020

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Consuming food that is rich in antioxidants reduces the risk of developing chronic diseases and oxidative stress. Fruits and vegetables are an excellent source of substances with antioxidant and pro-health properties. Such raw materials, characterized by a high content of polyphenolic compounds and antioxidant capacity, include pear fruits. In this study, the concentrations of bioactive compounds, as well as the antioxidant, anti-inflammatory, and antiproliferative activity in fruits of five selected pear cultivars were determined and compared. LC–MS and UPLC–PDA methods were used to determine the polyphenolic, carotenoid, chlorophyll, and triterpenoid profiles and content, and the antioxidant activity was analyzed using DPPH and ferric-reducing ability of plasma (FRAP) tests. The anti-inflammatory activity was determined against COX-1 and COX-2 enzymes. The cytotoxic activity of the test compounds was assessed against six tumor cell lines. The results showed that the major group of phenolic compounds in all cultivars was phenolic acids. In the group of chromoplastic pigments, chlorophyllide a and 9-cis-β-carotene were the major compounds, while in the triterpene group, ursolic acid was dominant. The antioxidant potential correlated with the content of polyphenols and carotenoids, and was the strongest for the ‘Radana’ cultivar. The highest antiproliferative activity in all varieties was established for bladder cancer.

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Section: Resultscontrasting

confidence: 89%

Section: Resultsmentioning

confidence: 99%

Bioactive Compounds and Health-Promoting Properties of Pear (Pyrus communis L.) Fruits

et al. 2020

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“…Simirgiotis, Quispe, Bórquez, Arce, and Sepúlveda () concluded that the small fruits of P. communis had a higher antioxidant activity (8.61 ± 0.65 μg/ml) and this activity can be related to the presence of several phenolic compounds. The antioxidant activity of the pear cultivars indicated that the potent antioxidant activity was detected in pear extracts of the “Grabova” cultivar (Liaudanskas, Zymonė, Viškelis, Klevinskas, & Janulis, ). A similar report has been issued as to the antioxidant activity of Pyrus species (Shan, Huang, Shah, & Abbasi, ).…”

Section: Resultsmentioning

confidence: 99%

Fatty acid profile and in vitro biological properties of two Rosacea species (Pyrus glabra and Pyrus syriaca), grown as wild in Iran

Hazrati

Govahi

Mollaei

2019

Food Science & Nutrition

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The high demands for the consumption of edible oils have caused scientists to struggle in assessing wild plants as a new source of seed oils. Therefore, in this study, the oil yield, fatty acid and tocopherol compositions, antioxidant and antibacterial activities of the oils obtained from Iran's two endemic plants (Pyrus glabra and Pyrus syriaca) were investigated. The obtained oil yields from the P. glabra and P. syriaca seeds were 33 ± 0.51 and 26 ± 0.28 w/w%, respectively. Oleic acid (C18:1) with the amount of 49.51 ± 1.05% was the major fatty acid in the P. glabra oil, while the main fatty acids in the P. syriaca seed oil belonged to linoleic acid (C18:2) and oleic acid (C18:1) with the amounts of 46.99 ± 0.37 and 41.43 ± 0.23%, respectively. The analysis of tocopherols was done by HPLC, and the results indicated that the P. glabra and P. syriaca seed oils were rich in α‐tocopherol (69.80 ± 1.91 and 45.50 ± 1.86 mg/100 g oil, respectively), constituting 86.24 and 89.01% of total detected tocopherols, respectively. The study on the reducing capacity of the oils indicated that the P. glabra oil had more reducing capacity than the P. syriaca oil. Moreover, the antioxidant activity of the P. glabra seed oil (43.4 ± 0.7 µg/ml) was higher than the P. syriaca seed oil (46.3 ± 1.2 µg/ml). Also, the investigation of the antibacterial activities indicated that the P. glabra and P. syriaca oils have an inhibitory effect on the studied bacteria. The results indicate that the oils of these plants can be appropriate sources of plant oils which can act as natural antibacterial agents.

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“…The great importance of DNA based discrimination in quality control of commercial medicinal plants which are adulterated is due to the utility of this technology in both processed and unprocessed forms of the plants 33 . Apples and pears are well known edible fruits with high nutritional value but also, they are a great source of different biologically active compounds whereas in fruits or leaves such as, phenolic compounds with their different classes as flavanoids, phenolic acids and procyanidins 19,20 beside the presence of high amounts of fiber and pectin 23 . Scientific studies suggested that apples and its products had a wide range of biological activities that include antioxidant, antiproliferative, anti-diabetic, antiinflammatory, lipid oxidation inhibition, and cholesterollowering activities which may contribute to health beneficial effects against cardiovascular disease, asthma and pulmonary dysfunction, diabetes, obesity, and cancer 34 .…”

Section: Discussionmentioning

confidence: 99%

“…Pyrus recorded species were listed into two categories, one including 38 species and the other including 47 taxa of hybrids and ferals 18 . P. communis L. and M. domestica Borkh., contain many chemical constituents, as proanthocyanidin, flavonoids, caffeoylquinic acid derivatives 19,20 , sterols 21,22 and pectin 23 . P. communis L. have antibacterial, antiseptic, antipyretic, aphrodisiac, astringent, diuretic, laxative and antihyperglycemic activities 24 , also M. domestica Borkh.…”

Section: Introductionmentioning

confidence: 99%

Inter Simple Sequence Repeat (Issr) and Start Codon Targeted Polymorphism (Scot) as Discrimination Techniques Between Certain Apple and Pear Cultivars

Hawary¹,

Tantawy²,

Kirollos³

et al. 2018

Int. Res. J. Pharm.

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Rosaceae is a large family in the plant regality, includes 3200 species in 115 genera such as Malus and Pyrus to which belong Malus domestica Borkh. fruits (apples) and Pyrus communis L. fruits (pears). Apples and pears have a wide variety of active constituents like anthocyanins, flavonoids, sterols, and tannins. P. communis and M. domestica fruits exhibit good antioxidant, antihyperglycemic, and chemopreventive activities. Botanists prefer to keep apple and pear under genus Pyrus but recently, American authors keep them distinct, apple under genus Malus and pear under genus Pyrus. Hybrids were developed to produce cultivars adapted to Egypt warm weather, so there is a large similarity between the different pear and apple cultivars which requires accurate and rapid techniques for their differentiation. The genetic discrimination between apple cultivars, Anna (1), Volus (2), Dorset golden (3) and pear cultivars, Le-Conte (4), MKM (5) and Flordahome (6) were carried out using start codon targeted and inter simple sequence repeat techniques with ten decamer primers, five for each technique. All primers gave bands with all cultivars with total 49 bands, 26 with ISSR and 23 with SCoT techniques, respectively with 27, 19 and 3 monomorphic, polymorphic and unique bands, respectively. According to combined dendrogram and similarity matrix, apple and pear cultivars grouped into two main groups, one contains the apple cultivars and the other contains pear cultivars with similarity coefficient 0.76-0.92. As a result, we can use ISSR and SCoT techniques for differentiation between apple and pear cultivars which have large morphological similarity.

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Determination of the Phenolic Composition and Antioxidant Activity of Pear Extracts

Cited by 37 publications

References 44 publications

Bioactive Compounds and Health-Promoting Properties of Pear (Pyrus communis L.) Fruits

Bioactive Compounds and Health-Promoting Properties of Pear (Pyrus communis L.) Fruits

Fatty acid profile and in vitro biological properties of two Rosacea species (Pyrus glabra and Pyrus syriaca), grown as wild in Iran

Inter Simple Sequence Repeat (Issr) and Start Codon Targeted Polymorphism (Scot) as Discrimination Techniques Between Certain Apple and Pear Cultivars

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