The effect of anthocyanin-rich bilberry extract on the antioxidant system in roots of barley (Hordeum vulgare L.) cultivars under ionizing radiation

Abstract

The effects of extracted and purified anthocyanin (ACY) from mature berries of Vaccinium myrtillus L., on growth parameters, antioxidant enzymes, total phenolic (TP) content, total flavonoid (TF) content, and 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activity were investigated in the roots of barley (Hordeum vulgare L.) cultivars Akhisar-98 and Erginel-90 under ionizing irradiation (IR; 10 Gy). The responses to IR and ACY-rich extract treatment in the two cultivars differed; Akhisar-98 was more radiosensitive than Erginel-90 in terms of root development, but IR-induced decreases in Akhisar-98 root length were alleviated by ACY-rich extract (100 lM). Peroxidase (POD) activity in Akhisar and Erginel cultivars decreased, while superoxide dismutase (SOD), glutathione reductase (GR), and ascorbate peroxidase (APX) activities increased. The ACY-rich extract increased POD activity, and decreased SOD, GR, and APX activities in the two barley cultivars. Although TP content increased in the Erginel cultivar more than the Akhisar cultivar, TF contents did not differ between the control and irradiated roots of the Erginel cultivar. Since TP content, TF content, and DPPH radical scavenging activity increased and H 2 O 2 content decreased after ACYrich extract treatment, ACY-rich extract treatment enhanced antioxidant activity, especially in the Akhisar cultivar. Treatment with ACY-rich extract conferred a greater tolerance to IR stress, especially after irradiation, in the two barley cultivars exposed to IR and exogenic ACYrich extract. These findings indicate that the Erginel cultivar is more IR-tolerant than the Akhisar cultivar and that exogenous ACY-rich extract treatment promotes antioxidant capacity in barley cultivars under IR stress.

Comparative Toxicity of Vegan Red, E124, and E120 Food Dyes on Three Rapidly Proliferating Model Systems

“…The apparent incongruences in response to vegan red cannot be explained by differences in absorption that likely occurred in the three models via cell surface. Anthocyanins, in fact, penetrate roots [34] and in vivo and in vitro cells and organs [21,35], including the A. salina cyst chorion [36]. Unfortunately, no data were found on seed integument permeability.…”

Yabani-Ekşi Elmanın (Malus sylvestris Miller) Antioksidan Aktivite ve Fenolik Madde İçeriği Üzerine Farklı Kurutma Yöntemlerinin Etkisi

“…Meyveleri temsil edecek şekilde alınan 100 g kurutulmuş meyve örneği karıştırıcı kullanılarak homojen bir hale getirilmiştir. Buradan alınan örneğin çözeltisi hazırlanarak bir saat boyunca tüpler içerisinde ekstraksiyonu sağlanmıştır [11]. Daha sonra filtre edilen solüsyon diğer aşamalarda yapılan toplam fenolik ve antioksidan kapasitelerinin belirlenmesinde kullanılmıştır.…”