Identification and quantification of phenolic compounds of Western Siberia Astragalus danicus in different regions

Abstract

The potential of phenolic compounds of medicinal plants including Astragalus danicus L is determined by but not limited to their antioxidant activity. Their anti-inflammatory, antitumor, and other useful properties are known, which allows using these phytochemicals within preventive activities to reduce the risk of many serious diseases. Chromatographic analysis of the Astragalus danicus L. biomaterial from the plant samples collected in three regions of the Kemerovo region (Western Siberia, Russia) established the presence of compounds of flavonols (isorhamnetin glucoside, kaempferol glucoside), flavones (apigenin 7-glucoside), phenylpropanoids (chlorogenic acid) in the aerial part of plants. The total content of phenolic compounds in plant samples ranged from 100.75 ± 3.87 mg/g (Yashkinsky district) to 190.95 ± 7.34 mg/g (Belovsky district). The content of chlorogenic acid in the studied samples was from 0.14 ± 0.01 mg/g to 1.16 ± 0.04 mg/g. Isorhamnetin glucoside was found only in samples of plants from two districts - Prokopievsky (41.39 ± 1.58 mg/g) and Belovsky (95.0 ± 3.66 mg/g). The content of glucosides of kaempferol ranged from 0.38 ± 0.01 mg/g to 0.55 ± 0.02 mg/g. Its content is almost twice as high as the content in the well-known analogues of Astragalus. Apigenin-7-glucoside was isolated in Astragalus samples for the first time, in a small amount (3.34 ± 0.13 mg/g) in a sample of plants of one growing zone. Studies have confirmed that the content of flavonoids in plants significantly depends not only on the genetic characteristics of plants, but also on the hydrothermal regime, the climatic conditions of different botanical and geographical areas of the habitat. This work shows that Astragalus danicus L. growing in Kemerovo region is a promising raw material for pharmacological preparations.

Phenolic Compounds in Extracts of Hibiscus acetosella (Cranberry Hibiscus) and Their Antioxidant and Antibacterial Properties

“…Phenolic compounds play an important role in the adaptation of plants to the environment, and their content is determined by the origin, harvesting time, and cultivation conditions [ 3 , 20 ]. Previous data has shown that the TPC and TFC contents can vary by approximately three times according to the region where the plants are collected [ 21 , 22 ]. In the present study, the major polyphenols in H. acetosella were identified as caffeic acid (CA) and chlorogenic acid (CGA), while gallocatechin (GC) and gallic acid (GAL) were present in relatively small amounts ( Table 2 ).…”

Medicinal Plants to Strengthen Immunity during a Pandemic

“…A balanced diet and dietary intake of nutrients affect the immune system through gene expression, cell activation and modification of signaling molecules. In addition, various food ingredients are determinants of the gut microbial composition and subsequently form immune responses in the body [ 138 , 139 , 140 ]. A diet combined with medicinal plants with immunomodulatory, antiviral and anti-inflammatory effects can significantly enhance this protection.…”

The effect of postharvest ultraviolet irradiation on the content of antioxidant compounds and the activity of antioxidant enzymes in tomato

“…Research confirms that high consumption of fruit and vegetables containing vitamin E, vitamin C and carotenoids, phenolic compounds including flavonoids and phenolic acids reduces the incidence of various dangerous diseases such as cancer and cardiovascular disease [3,4,5]. Therefore, natural plant foods are considered a potential source of natural highly active antioxidants such as phenolic compounds of various plant extracts or products [6,7,8,9,10,11,12,13]. Having similar properties, the so-called Mediterranean diet features tomatoes and tomato products as key components.…”