Chemical composition of the essential oil of Salvia bracteata banks and the biological activity of its extracts: Antioxidant, total phenolic, total flavonoid, antifungal and allelopathic effects

Abstract

The present study was conducted with the aim of determining biological activities of the Salvia bracteata plant, activities such as its antioxidant, total phenolic, total flavonoid, allelopathic and antifungal effects. To this end, aboveground parts (flowers + shoots + leaves) of S. bracteata plants were collected in the province of Kırşehir, Turkey, during the flowering stage in 2018. As a result of GC-MS analysis, 23 constituents were identified, representing 96.21% of the essential oil. The major compounds of essential oil were identified as ledol (24.12%), camphor (15.54%) and valencene (5.64%). In ethyl acetate, methanol and hexane extracts of S. bracteata, total phenolic content was found to be 104.63, 121.66 and 20.97 mg of GAE/g of extract, respectively, while flavonoid content was 12.89, 10.85 and 1.13 mg of QE/g of extract, respectively. In addition to this, DPPH radical removal activity was identified and found to be at its highest in the methanol and ethyl acetate extracts. The TEAC (cation radical removal activity), FRAP (iron reduction power) and CUPRAC (copper reduction power) reduction activities of these plant extracts were also determined. The methanol extract of S. bracteata was found to have an allelopathic effect on Rumex crispus and Taraxacum officinale. This extract had a weak effect on development of the mycelium of Alternaria solani Sorauer, one of the most significant of plant-pathogenic fungi, but it was found to be ineffective on the Sclerotinia sclerotiorum pathogen.

Biological activity and profiling of Salvia sclarea essential oil obtained by steam and hydrodistillation extraction methods via chemometrics tools

“…Furthermore, it is known that linalyl acetate can reduce oxidative changes 75 . In addition, some species from genus Salvia such as S. limbata and S. bracteata have good antioxidant effects 7,76 . It is clear that EO compounds act synergistically, antagonistically and additively 77…”

Beyond Traditional Use of Alchemilla vulgaris: Genoprotective and Antitumor Activity In Vitro

“…The CUPRAC assay was performed according to the procedure described in [ 57 ]. A calibration curve was prepared using different concentrations of ascorbic acid as a standard, and results were expressed as milligrams of ascorbic acid equivalents (AAEs) per gram of DW.…”

Kırşehir’de yayılış gösteren bazı Salvia türlerinin Mineral ve İz elementleri Tayini

“…It is reported by Yilar et al (2020a) that S. absconditiflora species can grow in alkaline (pH 7.58-8.30), high CaCO3 (3.78-67.45%), medium organic matter (1.39-3.71%) and clay loam soils. In another study, Yilar et al (2020b) for salvia species water saturation 58.3%, pH 8.09, total salinity 0.008%, total calcerous ratio 14.074%, organic matter 3.501%, K2O 98.766 kg da -1 and P2O5 3.914 kg da -1 have obtained data. When examining Table 4, it was determined that the soil samples included the values between low (3.6±0.976 mg kg -1 ) and high (43.2±0.326 mg kg -1 ) in terms of available P and between low (120±2.836 mg kg -1 ) and high (398±5.672 mg kg -1 ) in terms of changeable K. It was observed that Salvia ceratophylla, S. bracteata, S. absconditiflora and S. aethiopis species can grow in soil with a low level of phosphorus.…”