Navid Yazdani; Shahnaz Hamidi; Karamatollah Rezaei; Kourosh Vahdati; Ali Reza Rahmanian Haghighi
Abstract
Persian walnut (Juglan regia L.) is known as an important horticultural crop not only in Iran, but also in all over the world. Walnut kernels are rich source of functional compounds with a high nutritional value. In the present study, 13 cultivars and superior genotypes of walnut, include ‘Chandler’, ...
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Persian walnut (Juglan regia L.) is known as an important horticultural crop not only in Iran, but also in all over the world. Walnut kernels are rich source of functional compounds with a high nutritional value. In the present study, 13 cultivars and superior genotypes of walnut, include ‘Chandler’, ‘Lara’, ‘Vina’, ‘Pedro’, ‘Ser’, ‘Damavand’, ‘Jamal’, ‘RDM’, B21, K72, Z53, Z60, Z67 were harvested during 2013. Several pomological characteristics and fatty acid profiles of walnuts were analyzed after drying. Average weight of fruit and kernels were varied between 7.6-16.20 g and 3.8-8.7 g, respectively in different cultivars. The oil contents were varied from 54.4 to 72.1%. The results showed that the unsaturated fatty acid (UFA) compounds are prevalent in walnut oils by more than 90% of total fatty acids. Linoleic acid was the major fatty acid reaching the maximum value of 67.3% (cv. Z60) followed by oleic (18.3-34.2%), linolenic (3.1-14.0%), palmitic (6.3-8.5%) and stearic (2.8-4.3%) acids, respectively. The protein content ranged from 12.6 to 19.6%. The highest amounts of kernel and oil percentages were detected in B21 and ‘RDM’ respectively. Also, the highest amount of protein percentage was reported for ‘Jamal’. Also, high rates of poly unsaturated fatty acids (PUFA) were shown in Z53, Z60 and ‘Chandler’. Moreover, the highest amounts of UFA to saturated fatty acids (SFA) were detected in ‘Jamal’, Z67,Z53 and K72.
Mohammad Javad Nazarideljou; Mehran Kanani
Abstract
Regarding to a few studies on odorant compounds of cut flowers, a pot experiment was conducted to evaluate the effect of pre-harvest foliar application of salicylic acid (0, 1.5 and 2.25 mM) and a-aminooxi-b-phenyl propionic acid (0, 1.5 and 3 mM) as promoter and specific inhibitor of phenylalanine ammonia-lyase ...
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Regarding to a few studies on odorant compounds of cut flowers, a pot experiment was conducted to evaluate the effect of pre-harvest foliar application of salicylic acid (0, 1.5 and 2.25 mM) and a-aminooxi-b-phenyl propionic acid (0, 1.5 and 3 mM) as promoter and specific inhibitor of phenylalanine ammonia-lyase enzyme, respectively, on tuberose “double” basis on completely randomized design with four replications. According to the results, relative water content, cell membrane stability and vase life were significantly affected by foliar application (P<0.01). The a-aminooxi-b-phenyl propionic acid (3mM) and salicylic acid treatments (1.5 mM) increased the vase life about 68 and 34% compared with control. Post-harvest collection and analysis of tuberose floral scent was conucted using headspace system and GC-MS technique and 37 different compounds were detected. Methyl benzoate, benzyl benzoate, pentacosane and methyl salicylate were the most important odorant compounds of cut tuberose respectively. a-aminooxi-b-phenyl propionic acid treatment increased benzyl benzoate and pentacosane whereby decreased methyl benzoate and methyl salicylate amount, which were opposite to salicylic acid effect. Results showed that the Promoter and inhibitor of phenylalanine ammonia-lyase enzyme activity increased and decreased total amount of cut tuberose scent, respectively.