Efficacy of using some biological organisms as biological catalysts to reduce the incidence of melon powdery mildew in greenhouse conditions.
To solve the problem of melon yield and loss of fruit quality due to flamingo infestation, five biofilters were tested, Trichoderma viride, Trichoderma harzianum, Bacillus megaterium, Bacillus subtilis and Pseudomonas fluorescens, in combination with the fungicide Ridomil gold plus 71.5 VP. Laboratory results showed that the use of biofilters, in addition to the recommended fungicide, reduced the germination of the fungus. Greenhouse results showed a reduction in disease severity compared to controls.
Quality preservation in banana fruits packed in pine needles and haloisite-based ethylene gas removal paper during storage.
Newly developed ethylene cleaning paper based on pine needle waste has been evaluated for banana storage. The material included nanomaterial haloisite nanotubes (HNT) and microfibrillated cellulose (MFC). Finally, the color, TSS, and pH of the banana remained stable during ten days of storage, and a package of 30% PN / MFC / HNT was shown to delay the ripening and aging of the bananas.
Mango dry matter content at harvest to achieve high consumer quality of different varieties in different growing seasons.
Mango ‘Palmer’ and ‘Tommy Atkins’ were selected to assess the relationship between dry matter content (DMC) and the resulting soluble solids content (SSC), with consumer acceptance for different seasons and varieties. Evaluated fruits showed a sharp increase in DMC in summer and winter. Based on Vis-NIR spectrometric analysis of DMC at harvest, which varied between 50-80 g per kilogram, mangoes were grouped into three categories for two varieties and seasons. They were then stored under transport conditions at 12 o C and 90-95% relative humidity until maturation. Analyzes of physiochemical and sensory parameters showed that higher DMC in harvest produces higher SSC in ripening. The study showed only a weak effect of variety and season on the minimum DMC required to achieve consumer acceptance.
Gas change and fluorescence characteristics of chlorophyll hiosciamus muticus L. in different phenological phases in extreme dry environmental conditions, southwestern desert, Egypt
A new oxygen purification system, which uses natural rubber latex (NRL) with a photocatalytic system composed of acetophenone and manganese chloride, has been developed and tested to remove oxygen from oxidation-sensitive food packaging. Rheology, particle size of 399.6 nm and zeta value of -23.30 mV show that the stability and viscosity of NRL / PCS are suitable for coating applications. Colorimetry and FTIRS, conducted before and after oxygen capture, also showed that the NRL / PC system is a viable replacement for iron-based oxygen scavengers for food.
Vacuum packaging and ascorbic acid synergistically maintain the quality and taste of freshly cut potatoes.
The study evaluated the effect of storing freshly cut potatoes in vacuum packaging (VP) and dipping in 5 g per L of ascorbic acid (ASA) on the overall quality of vegetables. The treatment reduced tanning, weight loss and loss of strength by reducing ethylene production and respiration levels. It suppresses the accumulation of malondialdehyde, reactive oxygen species and phenols. It has also been found to delay the increase in glucose, sucrose and fructose.
The treatment successfully preserved the taste and aroma of sliced potatoes by inhibiting aldehydes due to the breakdown of lipids, which are responsible for the unpleasant taste.
Dynamics of etiolation followed by seedling morphology, carotenoid composition, antioxidant levels and protochlorophyll photoactivity in arabidopsis thaliana.
Since etiolated seedlings of Arabidopsis thaliana are used to study the process of deetiolation, the dynamics of molecular etiolation of wild and lutein-deficient (lut2) mutants was studied, between 2 to 12 days of their growth in the absence of light. Differences in apical hook curvature and cotyledon opening began after six days of culture. Scientists categorized seedlings based on differences in peak shapes and quantitatively monitored growth in each category. In the lut2 mutant, lutein deficiency led to a slower accumulation of Pchlide and affected xanthophyll composition. No ion leakage, no antioxidant depletion.
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