Abstract
Overhead irrigation of lentil plants with salt (100 mM NaCl) did not have any significant impact on plant growth, while chlorophyll content and chlorophyll fluorescence parameter Fv/Fm were affected. Under such poor irrigation water quality, the malondialdehyde content in leaves was increased due to the lipid peroxidation of membranes. In seeds, the total phenolic content (TPC) was correlated to their total antioxidant capacity (TAC). High performance liquid chromatography-mass spectrometry (HPLC-MS) detection showed that flavonoids (catechin, epicatechin, rutin, p-coumaric acid, quercetin, kaempferol, gallic acid and resveratrol) appear to be the compounds with the greatest influence on the TAC values. Catechin is the most abundant phenolic compound in lentil seeds. Overhead irrigation with salt reduced the concentration of almost all phenolic compounds analyzed from lentil seed extracts.
Highlights
Lentils are believed to have originated and been consumed since pre-historic times
Lentil plant growth performance was not affected by overhead irrigation with salt as compared to the control plots (Fig. 1A), while the dry weight per plant (Fig. 1B) and seed weight per plant (Fig. 1C) were affected after this treatment
Total phenolic content (TPC) and total antioxidant capacity of the phenolic compounds (TAC) were determined from lentil seeds treated with NaCl
Summary
Lentils are believed to have originated and been consumed since pre-historic times. They are one of the first crops to have been cultivated. In the modern and technologically advanced world, among other crops the annual legume lentil crop (Lens culinaris Medik.) is widely cultivated in more than 35 countries of 5 different continents, throughout Europe, Asia, and North Africa This crop became very popular among the people of the third world countries as an important protein source. Lentil seeds are rich in polyphenols, which have antioxidant, antimutagen and free radical-scavenging abilities and their potential effects are beneficial to human health in the prevention of many chronic diseases, so the investigation of the polyphenolic content in lentil seeds is worthwhile (Dueńas et al, 2002, 2003) Their relatively short cooking time provides an additional advantage. The lentil is drought tolerant in comparison with other temperate grain legumes, drought stress is the major restriction on lentil
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