Pannico Antonio, Cirillo Chiara, Giaccone Matteo, Scognamiglio Pasquale, Romano Raffaele, Caporaso Nicola, Sacchi Raffaele, Basile Boris
Department of Agricultural Sciences, University of Naples Federico II, Portici, Naples, Italy.
J Sci Food Agric. 2017 Nov;97(14):4790-4799. doi: 10.1002/jsfa.8348. Epub 2017 May 30.
The aim of this research was to study the variability in kernel composition within the canopy of hazelnut trees.
Kernel fresh and dry weight increased linearly with fruit height above the ground. Fat content decreased, while protein and ash content increased, from the bottom to the top layers of the canopy. The level of unsaturation of fatty acids decreased from the bottom to the top of the canopy. Thus, the kernels located in the bottom layers of the canopy appear to be more interesting from a nutritional point of view, but their lipids may be more exposed to oxidation. The content of different phytosterols increased progressively from bottom to top canopy layers.
Most of these effects correlated with the pattern in light distribution inside the canopy. The results of this study indicate that fruit position within the canopy is an important factor in determining hazelnut kernel growth and composition. © 2017 Society of Chemical Industry.
本研究的目的是研究榛子树冠层内核仁成分的变异性。
果仁的鲜重和干重随离地果实高度呈线性增加。从树冠层的底层到顶层，脂肪含量降低，而蛋白质和灰分含量增加。脂肪酸的不饱和度从树冠层底部到顶部降低。因此，从营养角度来看，位于树冠层底层的果仁似乎更具吸引力，但其脂质可能更容易被氧化。不同植物甾醇的含量从树冠层底部到顶部逐渐增加。
这些影响大多与树冠层内的光照分布模式相关。本研究结果表明，树冠层内果实的位置是决定榛子果仁生长和成分的重要因素。© 2017化学工业协会。
