Characterization ofAmaranthus spinosuscollected from different regions: Phytochemical and biological properties

Abstract

Amaranth is extensively cultivated as a green leafy vegetable and grain crop in many countries. The nutritional, chemical composition, antioxidant activity, and hemolytic potential of Amaranthus spinosus leaves collected from different locations in Tunisia were evaluated and compared. Leaves showed high levels of protein, carbohydrate, crude fiber, and ash. The leaves presented high contents in macro (K, Mg, Ca, and Na) and micronutrients (Fe, Zn, and Mn). Total phenolic and flavonoid contents ranged between 6.6 to 19.6 mg GAE/g DW and 4.07 to 10.48 mg CAE/g DW, respectively. The major compound in the essential oil was found to be α ‐thujone. The plant exhibited high antioxidant activity with EC50 values ranging from 25.55 to 54.58 μg/mL for DPPH radical scavenging capacity and 37.54–116.72 μg/mL for H2O2 scavenging activity, respectively. Moreover, A. spinosus leaves have the potential to protect red blood cells from hemolysis. Practical applications The results showed that A. spinosus could be a new source of nutrients and antioxidants and its use in human diet, nutraceutical development, and therapy is encouraged. Especially, it could be used to mitigate the risk of various diseases including cardiovascular, neurological, cancer, and Alzheimer's which are caused by reactive oxygen species (like H2O2).

Chemical compositions and biological activities of Serevenia buxifolia essential oil leaves cultivated in Vietnam (Thua Thien Hue)

“…In the present anti‐hemolysis test, the main anti‐hemolytic activity induced by the EO of S. buxifolia leaves can be linked to the presence of monoterpenes and sesquiterpenes, as demonstrated by previous studies (Elgendy & Semeih, 2019; Rjeibi et al, 2017; Zouari‐Bouassida et al, 2018). Certain bioactive components are documented as having the potential to generate radicals that attack the erythrocyte membrane, which induces the chain oxidations of proteins and lipids, eventually causing membrane damage due to hemolysis (Vinodhini & Kalaiselvi, 2021).…”

Amaranthaceae plants of Israel and Palestine: Medicinal activities and unique compounds

“…Detailed presentation of chemical composition is provided. 322 Methanolic extract of seeds had high antioxidant capacity (DPPH, H2O2). 333 Antioxidant capacity of leaves was determined by two methods (DPPH, ABTS + ).…”

Nutrients Content and Antioxidant Potential of Selected Traditional Vegetables Grown in Malawi

“…TPC and TFC values in Amaranth hybridus were (Deveci & Çayan, 2019). In order to evaluate the ability of extracts to scavenge free radicals, DPPH radical scavenging assay is commonly used (Rjeibi, 2017). DPPH radical scavenging assay is widely used and it can determine the capability of an extract to scavenge free radicals; thus the lower the value of IC50, the higher the antioxidant potential (Rangani et al, 2018).…”