Determination and Involvement of Aqueous Reducing Compounds in Oxidative Defense Systems of Various Senescing Leaves

Meir, Shimon; Kanner, Joseph; Akiri, Bezalel; Philosoph‐Hadas, Sonia

doi:10.1021/jf00055a012

Cited by 686 publications

(387 citation statements)

References 23 publications

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“…Antioxidants are compounds capable of donating a single electron or hydrogen atom for reduction. The reducing capacity of a compound may serve as a significant indicator of its potential antioxidant activity [44]. Frap activity of mushrooms grown on Tilia tomentosa leaves and beech sawdust was found as 2.508±0.056 and 2.028 0.009 μmol FeSO 4 .7H 2 O/g, respectively.…”

Section: Total Phenolic Content and Antioxidant Propertiesmentioning

confidence: 99%

Total Phenolic Content, Antioxidant and Antimicrobial Properties of Pleurotus ostreatus Grown on Lime (Tilia Tomentesa) Leaves

Yıldız¹,

Tabbouche²,

Kılıç³

et al. 2018

HJBC

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Ö Z E TS unulan bu çalışmanın amacı, atık ıhlamur yapraklarının Pleurotus ostreatus mantarı kültivasyonunda kullanılabilirliğini araştırmaktır. Başarılı bir hasattan sonra, mantarların toplam fenolik madde miktarları, antioksidan ve antimikrobiyal özellikleri belirlenmiştir. Sonuçlara göre, verim %15, biyolojik etkinlik %30, toplam fenol miktarı 1.514±0.001 mg GAE/g, antioksidan aktivitesi 2.508±0.056 μmol FeSO 4 .7H 2 O/g olarak hesaplanmıştır. Ayrıca Pleurotus ostreatus mantarı metanolik özütleri Klebsiella pneumonia ve Acinetobacter haemolyticus bakterilerine karşı inhibitor etki göstermiştir. Sonuç olarak, Tilia tomentosa yaprakları tıbbi özelliklere sahip Pleurotus ostreatus kültivasyonu için uygun bir hammaddedir. Anahtar KelimelerAntimikrobiyal, antioksidan, ıhlamur yaprakları, Pleurotus ostreatus. A B S T R A C TI n this study, the posibility of using of waste lime leaves in Pleurotus ostretatus cultivation was investigated.After a successful harvest, total phenolic content, antioxidant and antimicrobial properties of mushrooms was determined. According to the test results; yield was 15%, biological efficiency was 30%. The total phenolic content was 151.4±0.001 mg GAE/100 g, the antioxidant activity was 2,508±0.056 μmol FeSO 4 .7H 2 O/g. Additionally; methanolic extract of Pleurotus ostreatus mushroom showed inhibitory effect against Klebsiella pneumonia and Acinetobacter haemolyticus bacteria. As a result, Tilia Tomentesa's leaves are suitable raw material with satisfactory medical properties for the Pleurotus ostretaus cultivation.

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Section: Total Phenolic Content and Antioxidant Propertiesmentioning

confidence: 99%

Total Phenolic Content, Antioxidant and Antimicrobial Properties of Pleurotus ostreatus Grown on Lime (Tilia Tomentesa) Leaves

Yıldız¹,

Tabbouche²,

Kılıç³

et al. 2018

HJBC

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“…Reduction of Fe 3+ to Fe 2+ is an important indicator of potential antioxidant activity [Meir et al 1995]. The Fe 3+ reducing capacities of the compounds indicate their electron donating abilities.…”

Section: Resultsmentioning

confidence: 99%

EVALUATION OF ANTIOXIDANT ACTIVITY OF in vitro PROPAGATED MEDICINAL Ceratophyllum demersum L. EXTRACTS

Emsen

Doğan

2018

Acta Sci.Pol.Hortorum Cultus

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Ceratophyllum demersum L. is a medical plant of the family Ceratophyllaceae that has been traditionally used for the treatment of diseases such as ulcer, diarrhoea, wounds and fever since ancient times. This study presents antioxidant activities of water and methanol extracts of in vitro propagated C. demersum. Shoot tip explants of C. demersum for in vitro plant regeneration were cultured on liquid Murashige and Skoog (MS) medium containing 0.25-1.25 mg/L 6-Benzylaminopurine (BAP) and 0.10 mg/L Thidiazuron (TDZ) combinations for eight weeks. Maximum number of plantlets per explant (110.67) was obtained on MS medium supplemented with 0.75 mg/L BAP + 0.10 mg/L TDZ. In order to determine antioxidant activities of C. demersum, antioxidant contents (β-carotene, flavonoid, lycopene and total phenols), metal chelating and reducing power capacities of methanol and water extracts obtained from C. demersum were investigated. It was detected that water extract was more effective in all activities. Total phenols (76.55 μg/mg) in water extract were measured as the highest antioxidant component. Based on the water extracts data, as IC 50 value for chelating on ferrous ions was 9.24 mg/mL, EC 50 value for reducing power activity was 8.23 mg/mL. It was also determined that the metal chelating and reducing power activities of the both extracts are increased depending on the concentration. Therefore, all these data suggest that both tested extracts of in vitro propagated C. demersum would exert beneficial effects by virtue of their antioxidant properties and may be utilized as a promising source of therapeutics.

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“…Various qualitative tests were performed on MELL for establishing the phytochemical profile by following standard methods as suggested by Harborne [19] . Further, the predominant phytochemicals preset in the extract such as phenols and flavonoids were quantified by following the methods of Mc Donald et al and Meda et al respectively [20,21] .…”

Section: Investigation Of Phytochemicalsmentioning

confidence: 99%

Evaluation of antioxidant potential of leaves of Leonotis nepetifolia and its inhibitory effect on MCF7 and Hep2 cancer cell lines

Veerabadran¹,

Anuradha

Souprayane

et al. 2013

Asian Pacific Journal of Tropical Disease

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Determination and Involvement of Aqueous Reducing Compounds in Oxidative Defense Systems of Various Senescing Leaves

Cited by 686 publications

References 23 publications

Total Phenolic Content, Antioxidant and Antimicrobial Properties of Pleurotus ostreatus Grown on Lime (Tilia Tomentesa) Leaves

Total Phenolic Content, Antioxidant and Antimicrobial Properties of Pleurotus ostreatus Grown on Lime (Tilia Tomentesa) Leaves

EVALUATION OF ANTIOXIDANT ACTIVITY OF in vitro PROPAGATED MEDICINAL Ceratophyllum demersum L. EXTRACTS

Evaluation of antioxidant potential of leaves of Leonotis nepetifolia and its inhibitory effect on MCF7 and Hep2 cancer cell lines

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