The pine needles extracts are shown to be free of 311 tested pesticide residues or certain heavy metals and exhibit comparable quantities of total flavonoids contents, total phenolic contents and the antioxidant activities with commercial products.
Analyses were performed for P contents (total, available and organic), organic matter content (organic carbon, Corg and total nitrogen, Ntot) and the two acid and alkaline phosphatase activities (AcPA and AkPA).
It summarizes their main characteristics: number of image contents, total number of distorted images involved in the subjective experiment, number of distortion types evaluated, and format of the subjective scores.
Bulk soils and soil fractions of the uppermost A horizons were analyzed for OC concentrations, radiocarbon (14C) contents, total pedogenic iron oxide concentration and oxalate extractable proportions of iron (FeOX) oxides.
The correlation between the results of different antioxidant assays and oxidation parameters of oil indicated that leaf extracts and fractions, exhibit considerable total phenolic contents, total flavonoid contents and scavenging power, along with more potent for enhancing the oxidative stability of sunflower oil.
The results presented herein provided valuable data of total phenolic contents, total flavonoid content, and antioxidant activities of several commercially important grape varieties.
All sugar contents (total sugar, reducing sugar, and nonreducing sugar) changed nonsignificantly at −10°C but they either increased or decreased significantly at 4°C and 30 ± 1°C.
Dried SF vegetative parts were extracted using six different solvents, and the extracts were assessed for total phenolic and flavonoid contents, total reducing power, iron chelating capacity, and free radical scavenging power, including, scavenging of hydroxyl radicals, superoxide anions, nitric oxide, and hydrogen peroxide.
The N contents (total, NH4+ and NH3) were obtained using δN and the total percentage of N for each plant tissue (leaves and roots), and N contents for the external NH4+ and NH3 were calculated using the Henderson-Hasselbalch equation, which takes into account the external pH.
