Physical, mechanical and chemical properties of plums (cv. Santa rosa) affected by aminoethoxyvinylglycine applications

Background: The engineering properties (physical, mechanical and chemical) are importance to postharvest technologies of the agricultural materials. To plum fruits quality, the harvest and postharvest applications, the engineering properties of plum fruits should be considered. The effect of AVG  (Aminoethoxyvinylglycine) treatments on some physical, mechanical and chemical properties of plum fruits (cv. Santa Rosa) were determined.Materials and Methods: For this research, the plant material ‘Santa Rosa’ plum (Prunus salicina L.) fruits were obtained in Tokat/Turkey (39o51' N and 40o55' E), in 2012. AVG treatments were as 0 mg L-1, 100 mg L-1 and 200 mg L-1, and three different harvest dates including 25 July, 1 August and 7 August were used.Results: The geometric mean diameter, volume of fruit and surface area values increased with AVG doses, whereas, fruit density decreased as AVG doses increased. L* and b* values decreased from 43.75 to 24.14 and 20.24 to 13.21, whereas, a* value increased from -9.03 to -2.63 for flesh plum, respectively. The fruit removal force of plum fruit increased from 19.09 N to 20.20 N in magnitude with an increase in AVG doses. The friction coefficients of fruits increased as AVG doses increased and harvest dates. Total soluble solids content was higher in AVG-0 (0 mg L-1) as compared to AVG-1 and AVG-2 (100 mg L-1 and 200 mg L-1) AVG-2 applications, whereas, pH and titratable acidity were lower in 200 mg L-1 as compared to 0 mg L-1 and 100 mg L-1 treatments.Conclusion: Post-harvest technological applications of the plum fruits must be designed by taking  criteria into consideration for plum engineering properties.Key words: Color, friction coefficient, fruit removal force, firmnes

Geometric, volumetric, colour and frictional properties of selected Salvia species of turkey

Background: Salvia seeds are promite to dietary and healthy oils because they contain essential fatty acids. Salvia seeds frequently produce mucilage on soaking, and this mucilage is used for the treatment of eye diseases in eastern countries. Salvia species studied for medicine, food and cosmetics, have the potential to be used in the various fields. In the present study, selected engineering (geometrical, volumetrical, colour and frictional) properties of 6 Salvia species seeds were determined and compared.Materials and Methods: This study was performed on selected engineering properties of seeds of 6 Salvia species (Salvia viridis L., Salvia aethiopis L., Salvia cryptantha Montbert & Aucher ex Benthan., Salvia tomentosa Mill., Salvia sclarea L., Salvia virgata Jacq.,) cultivated in Turkey. Plants were collected during the vegetation in 2012-2013 (May-Agust). The seeds were cleaned from foreign matter, dirt and broken seeds manually.Results: The average length, width and thickness were found in the range of 2.61 to 3.53 mm, 1.59 to 2.92 mm and 1.14 to 2.52 mm, respectively. Salvia viridis L. specie had the lowest geometric mean diameter and surface area, whereas Salvia cryptantha L. had the least values among these 6 Salvia species for these properties. The bulk density, true density and the porosity were between 296.83 and 702.80 kg m-3, 285.69 and 718.08 kg m-3, 10.27 and 44.05%, respectively. The volume of unit seed and sphericity ranged between 2.56 and 13.64 mm3, 62.90 and 90.40%, respectively. The coefficient of friction of salvia species were largely influenced by the friction surfaces studied, and highest values were found for polywood in the Salvia crytantha L.. In the study, the static friction coefficient and the angle of repose of salvia species changed from 0.477 to 0.955, and from 14.09 to 23.57°, respectively.Conclusion: Determination of geometric, volumetric, colour and frictional properties of Salvia spp. seeds may increase their economic value.Keywords: Salvia seed, geometric mean diameter, chroma, static friction coefficien

SOME ENGINEERING PROPERTIES OF SHELLED AND KERNEL TEA (Camellia sinensis) SEEDS

Background: Camellia sinensis is the source of tea leaves and it is an economic crop now grown around the World. Tea seed oil has been used for cooking in China and other Asian countries for more than a thousand years. Tea is the most widely consumed beverages after water in the world. It is mainly produced in Asia, central Africa, and exported throughout the World. Some engineering properties (size dimensions, sphericity, volume, bulk and true densities, friction coefficient, colour characteristics and mechanical behaviour as rupture force of shelled and kernel tea (Camellia sinensis) seeds were determined in this study. Materials and Methods: This research was carried out for shelled and kernel tea seeds. The shelled tea seeds used in this study were obtained from East-Black Sea Tea Cooperative Institution in Rize city of Turkey. Shelled and kernel tea seeds were characterized as large and small sizes. Results: The average geometric mean diameter and seed mass of the shelled tea seeds were 15.8 mm, 10.7 mm (large size); 1.47 g, 0.49 g (small size); while the average geometric mean diameter and seed mass of the kernel tea seeds were 11.8 mm, 8 mm for large size; 0.97 g, 0.31 g for small size, respectively. The sphericity, surface area and volume values were found to be higher in a larger size than small size for the shelled and kernel tea samples. The shelled tea seed’s colour intensity (Chroma) were found between 59.31 and 64.22 for large size, while the kernel tea seed’s chroma values were found between 56.04 68.34 for large size, respectively. The rupture force values of kernel tea seeds were higher than shelled tea seeds for the large size along X axis; whereas, the rupture force values of along X axis were higher than Y axis for large size of shelled tea seeds. The static coefficients of friction of shelled and kernel tea seeds for the large and small sizes higher values for rubber than the other friction surfaces. Conclusion: Some engineering properties, such as geometric mean diameter, sphericity, volume, bulk and true densities, the coefficient of friction, L*, a*, b* colour characteristics and rupture force of shelled and kernel tea (Camellia sinensis) seeds will serve to design the equipment used in postharvest treatments

PHYSICAL, MECHANICAL AND CHEMICAL PROPERTIES OF PLUMS (cv. Santa Rosa) AFFECTED BY AMINOETHOXYVINYLGLYCINE APPLICATIONS

Background: The engineering properties (physical, mechanical and chemical) are importance to post harvest technologies of the agricultural materials. To plum fruits quality, the harvest and postharvest applications, the engineering properties of plum fruits should be considered. The effect of AVG (Aminoethoxyvinylglycine) treatments on some physical, mechanical and chemical properties of plum fruits (cv. Santa Rosa) were determined. Materials and Methods: For this research, the plant material ‘Santa Rosa’ plum (Prunus domestica) fruits were obtained in Tokat/Turkey (39o51' N and 40o55' E), in 2012. AVG treatments were as 0 mg L-1, 100 mg L-1 and 200 mg L-1, and three different harvest dates including 25 July, 1 August and 7 August were used. Results: The geometric mean diameter, volume of fruit and surface area values increased with AVG doses, whereas, fruit density decreased as AVG doses increased. L* and b* values decreased from 43.75 to 24.14 and 20.24 to 13.21, whereas, a* value increased from -9.03 to -2.63 for flesh plum, respectively. The fruit removal force of plum fruit increased from 19.09 N to 20.20 N in magnitude with an increase in AVG doses. The friction coefficients of fruits increased as AVG doses increased and harvest dates. Total soluble solids content was higher in AVG-0 (0 mg L-1) as compared to AVG-1 and AVG-2 (100 mg L-1 and 200 mg L-1) AVG-2 applications, whereas, pH and titratable acidity were lower in 200 mg L-1 as compared to 0 mg L-1 and 100 mg L-1 treatments. Post-harvest technological applications of the plum fruits must be designed by taking criteria into consideration for plum engineering properties

GEOMETRIC, VOLUMETRIC, COLOUR AND FRICTIONAL PROPERTIES OF SELECTED SALVIA SPECIES OF TURKEY

Background: Salvia seeds are promite to dietary and healthy oils because they contain essential fatty acids. Salvia seeds frequently produce mucilage on soaking, and this mucilage is used for the treatment of eye diseases in eastern countries. Salvia species studied for medicine, food and cosmetics, have the potential to be used in the various fields. In the present study, selected engineering (geometrical, volumetrical, colour and frictional) properties of 6 Salvia species seeds were determined and compared. Materials and Methods: This study was performed on selected engineering properties of seeds of 6 Salvia species (Salvia viridis L., Salvia aethiopis L., Salvia cryptantha Montbert & Aucher ex Benthan., Salvia tomentosa Mill., Salvia sclarea L., Salvia virgata Jacq.,) cultivated in Turkey. Plants were collected during the vegetation in 2012-2013 (May-Agust). The seeds were cleaned from foreign matter, dirt and broken seeds manually. Results: The average length, width and thickness were found in the range of 2.61 to 3.53 mm, 1.59 to 2.92 mm and 1.14 to 2.52 mm, respectively. Salvia viridis L. specie had the lowest geometric mean diameter and surface area, whereas Salvia cryptantha L. had the least values among these 6 Salvia species for these properties. The bulk density, true density and the porosity were between 296.83 and 702.80 kg m-3, 285.69 and 718.08 kg m-3, 10.27 and 44.05%, respectively. The volume of unit seed and sphericity ranged between 2.56 and 13.64 mm3, 62.90 and 90.40%, respectively. The coefficient of friction of salvia species were largely influenced by the friction surfaces studied, and highest values were found for polywood in the Salvia crytantha L.. In the study, the static friction coefficient and the angle of repose of salvia species changed from 0.477 to 0.955, and from 14.09 to 23.57°, respectively. Conclusion: Determination of geometric, volumetric, colour and frictional properties of Salvia spp. seeds may increase their economic value

Effect of methyl jasmonate treatments on the bioactive compounds and physicochemical quality of 'Fuji' apples

Recently, plant growth regulators have been used for various purposes in apples. Methyl jasmonate (MeJA) has significant effects on the physiology, postharvest biology, processing, and chemical composition of apples. In the present study, the effects of MeJAMeJa treatments on the physicochemical quality and bioactive compounds (total antioxidant activity, total phenolics, and total anthocyanins) of 'Fuji' apples were investigated. The following doses of MeJa were used: 0 (control); 1; 120; 2,240; and 4,480 mg L-1. The highest geometric mean diameter, fruit mass, flesh firmness and skin thickness were obtained from the 2,240 mg L-1 MeJA treatment. Fruits harvested from control trees exhibited the highest total soluble solids content (TSSC) and pH, whereas the lowest TSSC and pH values were obtained from the 4,480 mg L-1 MeJA treatment. The titratable acidity was lower in the control as compared to the other treatments. The total phenolics of the fruit flesh decreased with increasing MeJa doses. The highest total antioxidant activity for both the FRAP and TEAC of fruit flesh was obtained from the 1,120 mg L-1 MeJA dose. The total anthocyanin content was higher in the 4,480 mg L-1 MeJA treatment than in the other treatments. Hue angles for both the sun- and shade-exposed sides of the fruit skin and flesh were lower in the 4,480 mg L-1 MeJA treatment as compared to the other treatments. Apples without full color formation are sold at lower prices in markets, which results in significant economic losses for producers. MeJA may be used as an efficient treatment to promote color formation in apple species with weak coloring due to genetic and climate conditions.Recientemente, los reguladores del crecimiento de plantas se han utilizado para múltiples propósitos en las manzanas. Metil jasmonato (MeJA) afecta de manera importante la fisiología, la biología después de la cosecha, procesamiento y contenido químico de la manzana. En este estudio se investigó el efecto de los tratamientos de metilo jasmonato en calidades fitoquímicas y compuestos bioactivos (actividad antioxidante total, fenoles totales, antocianos totales) de la manzana 'Fuji'. Las dosis de metil jasmonato utilizadas fueron: 1120, 2240 y 4480 mg L-1. El mayor diámetro medio geométrico, masa del fruto, firmeza de la pulpa y el grosor de la piel se obtuvo a partir de tratamiento de MeJA 2240 mg L-1. Las frutas recolectadas de árboles del tratamiento control exhibieron el más alto contenido de sólidos solubles totales (TSSC) y el pH, mientras que la menor TSSC y pH se obtuvo del tratamiento de MeJA 4480 mg L-1. La acidez titulable fue menor en el control, en comparación con los otros tratamientos. Los fenoles totales de la pulpa del fruto disminuyeron con el aumento de dosis metil jasmonato. La mayor actividad antioxidante total, tanto de FRAP y TEAC de pulpa de la fruta se obtuvo de la dosis de MeJA 1120 mg L-1. La antocianina total fue mayor en la dosis de MeJA 4480 mg L-1, respecto a los otros tratamientos. Ángulos de tono para la piel expuesta al sol y sombra y la pulpa de la fruta, fueron menores en la dosis de MeJA 4480 mg L-1, en comparación a los otros tratamientos. Las manzanas sin formación de color se venden a precios más bajos en los mercados, y por consiguiente, importantes pérdidas económicas para los productores. MeJA puede ser utilizado como una herramienta eficaz para promover la formación de color de las especies de manzanas que por condiciones genéticas y clima, poseen un color débil