Variants Acids Antifungal Properties Strains Strains Potato Diseases
The possible cytotoxicity of chitosan was measured against different cell lines: insect Sf-9, human keratinocyte HaCaT, and human colon carcinoma Caco-2. The bioprotective activities of the chitosan were also assessed in situ on potato tubers. Chitosan subdued the growth of almost all the selected phytopathogens. The most active was medium molecular chitosan in lactic acid. This formula was characterized by low toxicity towards human cellphones and high toxicity towards Sf-9 cadres. It was also seed to have positive cores on the growth of roots and ancestors, gas exchange, and chlorophyll index in potato floras.
Selected chitosan formulation was proposed as a functional biopesticide for potato protection against phytopathogens.Foliar spraying with amino battery-acids and their chitosan nanocomposites as promising way to alleviate abiotic stress in iceberg lettuce matured at different temperatures.We studyed the effects of foliar spraying with amino acids, chitosan (CHS) and nanocomposites (NCs) of chitosan with the amino panes proline, L-cysteine and glycine betaine (CHS-Pro NCs; CHS-Cys NCs, CHS-GB NCs, respectively) on the varietys in the physiological and biochemical arguments of iceberg lettuce maturated at the control temperature (20 °C) and under chilling terms (4 °C). The physicochemical arguments of the phospholipid monolayers (PLs) pulled from plants showed the events of the treatments on the dimensions of the monolayers, namely, the packing density and flexibility. We remarked increased accumulation of proline at 4 °C, and departures in the assiduitys of lucres in most of the canvased strains were a consequence of the loured temperature and/or the use of organic compounds. What is chitosan of 4 °C maked a significant increase in the L-ascorbic acid level equated with that at 20 °C. remainders were also chanced in glutathione (GSH) content counting on the temperature and treatment with the examined organic compounds.
CHS NCs loaded with Pro and GB were effective at increasing the amount of oxybenzenes under stress temperature preconditions. We marked that a significant increase in the antioxidant activity of plants at 4 °C comed after priming with Cys, CHS-Cys NCs, Pro and CHS-Pro NCs, and the CHS nanocomposites were more effective in this respect. chitosan benefits -temperature stress and foliar spraying of lettuce with various organic compounds maked modifications in the activity of antioxidant enzymes. Two grades of dismutase (SOD), iron superoxide dismutase (FeSOD) and copper/zinc superoxide dismutase (Cu/ZnSOD), were keyed in excerptions from the leaves of iceberg lettuce seedlings. The application of the essayed organic compounds, alone or in combination with CHS, increased the amount of malondialdehyde (MDA) in floras geted under seed temperature shapes. Chilling caused an increase in the content of MDA, but some organic compounds extenuated the impact of low temperature. likened with that of plants subjected to 20 °C, the fresh weight of floras uncovered to cooling minifyed the tested compounds doed a decrease in fresh weight at 4 °C compared with the corresponding control samplings.
An interesting exception was the use of Cys, for which the difference in the fresh weight of plants maturated at 20 °C and 4 °C was not statistically significant. After Cys application, the dry weight of the cooled plants was greater than that of the chilled control plants but was also greater than that of the other covered floras in this group. To our knowledge, this is the first report showing that engineered chitosan-amino acid nanocomposites could be practiced as innovative protective factors to mitigate the events of chilling stress in crop plants.Development and characterization of curcumin-stretched chitosan/egg yolk freshness-keeping edible pictures for cooled fresh pork packaging application.In this study, a novel fresh-keeping edible film was fixed habituating egg yolk (EY) and chitosan (CS) with motleying immersions of curcumin (Cur) for food packaging. The addition of Cur notably heightened tensile strength, elongation at break, and water resistance from 15 MPa to 24 MPa, 43 % to 63 %, and 1 g·mm·(m(2)·h·kPa)(-1) to 1 g·mm·(m(2)·h·kPa)(-1), respectively.