Plants are important antioxidant sources. In our study, total antioxidant status (TAS), total oxidant status (TOS) and oxidative stress index (OSI) of endemic Helleborus vesicarius Aucher ex Boiss.were determined. The aerial parts of the plant samples were dried and extracted with ethanol (EtOH). TAS and TOS values of plant extract were determined using Rel Assay Diagnostics kits. As a result of the studies, the TAS value of H. vesicarius was determined 5.548±0.23, the TOS value was 13.778±0.119 and the OSI value was 0.249±0.009. In this context, the plant has been shown to have significant antioxidant potential.
İnsanlar çağlar boyunca doğayla barış içinde bir arada yaşamış, ancak sanayileşme ve teknolojik ilerlemeler insanın çevreye müdahalesini artırmıştır. İnsan, doğanın bir parçası olmaktan ziyade sahibi olarak yaşamasının bir sonucu olarak çevre üzerinde olumsuz etkilerde bulunarak ekolojik bir felaket yaratmıştır. Küresel ısınma, aşırı yağmur, kuraklık, türlerin yok olması, enerji kıtlığı, asit yağmurları ve hava kirliliği gibi sorunların bir sonucu olarak, insanlık artık doğa ile uyum içinde yaşamaya geri dönmek için çözümler aramaktadır (Sur, 2020).Ekoloji, canlılar ve çevreleri arasındaki etkileşimlerin incelenmesidir. Artan nüfus, gıda kıtlığı, küresel ısınma da dahil olmak üzere çevresel bozulma, bitki ve hayvan türlerinin yok olması ve bunlarla ilgili tüm sosyal ve politik sorunlar, insan ilişkilerindeki en önemli konulardan bazılarıdır. Bu meseleler esasen ekolojiktir. Ancak bu durumda vurgulanması gereken şey "ilişkilerdir". İnsanların tüm bu meseleler ışığında doğayla olan ilişkilerini bilişsel ve
The physiological and morphological effects of different concentrations of bisphenol A (BPA) on Moringa oleifera seedlings were determined in this study. Significant chlorosis and abscission were observed in leaves exposed to 50 mg/L of BPA. Photosynthetic pigment levels were affected differently by varying doses of BPA. Although the total carbohydrate content of seedling parts was increased by BPA, protein content was lowered by it, except in the case of roots at 1.5 mg/L of BPA. However, it was determined that the content of nonprotein sulphhydryl groups of seedling parts did not change significantly. The total phenolic content of root tissues showed an insignificant change; however, it was found that phenolic content increased in the stems and leaves following application of BPA. The content of hydrogen peroxide (H2O2) in seedling tissues increased with increasing concentrations of BPA. Statistical analysis indicated that H2O2 content was significantly correlated with malondialdehyde content. These results clearly show that the application of BPA causes oxidative stress in seedling tissues.
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