Internal quality assessment of tomato fruits using image color analysis

Nondestructive optical methods based on image analysis have been used for determining quality of tomato fruit. It is rapid and requires less sample preparation. A samples of fresh tomatoes were picked at different maturity stages, and determining chromaticity values (L*,a*,b*,a*/b*,h˚and ΔE) by image analysis and colorimeter. Total soluble solids (TSS), were measured by refractometer, lycopene extracting and expressed as mg/kg fresh tomato (FW). Results indicated that, during ripening both L*, b*, h˚, and ΔE tendency to decline, opposite tendency was determined with a*, a*/b* ratio, TSS and lycopene content. Chromaticity values have an important impact in internal quality parameters. Where, avg. of TSS, entire class and lycopene content had a positive linear correlation with a*/b* ratio. Contrary correlation was determined between avg. of TSS, entire class and both h˚ and ΔE. Meanwhile, h˚ and ΔE, had a negative logarithmic correlation with lycopene content. On the other hand, there were positive correlation between chromaticity values performed by image analysis technology and colorimeter. Where, on determining avg. of TSS, entire class, and lycopene content, correlations were linear with a*/b* ratio, and logarithmic with ΔE. Meanwhile, h˚ had alogarithmic correlation on determining avg. of TSS, entire class, and exponential correlation on determining lycopene content

Effect of adulteration on honey properties

Abstract Honey samples belong to clover plants (Trifolium alexandrinanum) (1, 3, 6, 12, and 24

AGRICULTURE AND BIOLOGY JOURNAL OF NORTH AMERICA Effect of laser leveling, water quantities and rhizobium inoculation on fixing N 2 efficiency with Faba Bean

ABSTRACT Reducing water consumption and mineral fertilizer in agriculture, by modern techniques and biofertilizer is very important to face water shortage in Egypt, encourage organic agriculture and environment preservation. A field experiment was conducted in clay soil during winter season of 2012-2013., to study the effect of, laser leveling, water quantities and rhizobium inoculation on fixing N 2 efficiency with faba bean (vicia faba L.). Seeds were inoculated with rhizobium and planted at different leveling slopes (zero, 0.03 and 0.05%) with different water quantities (100, 75 and 50%) from water required. Either leveling slope, water quantities and rhizobium inoculation has a significant effects (P 0.01) on nodulation, growth, chemical, yield parameters, and water use efficiency. By rhizobium inoculation all parameters were increases and has a direct proportion with leveling slope, and water quantities at range between 75 to 50%., and inverse proportional at range between 100 to 75% of water quantities. The optimum treatment is leveling slope 0.05%, water quantities 75%, and inoculated seeds which recorded increases compared with control treatment, on either nodules No., and weight, biological and seed yield, seed index and water use efficiency, about 213.22, 89.04, 100, 136.34, 55.9 and 211.12%., respectively