Sea buckthorn leaves and branches presently create waste-/by-products of harvesting after pruning the plants. It is already known that sea buckthorn berries are important for their chemical composition and based on this occupy a wide field in nutrition. We raised the idea that sea buckthorn leaves, branches, and especially the bark, have also an extraordinary chemical composition like the berries. The aim of this study was to describe these by-products. For this purpose, detailed full analyses of corresponding samples from Russia (seven varieties) and Germany (four varieties) were performed. Especially the dry mass, fat content, proteins, carbohydrates, starch content, and crude fiber were investigated to obtain an overview. Minor components like total phenol content, metals, and water- and fat-soluble vitamins were also studied. All analytical parameters were based on an official collection of analysis methods (German ASU - amtliche Sammlung von Untersuchungsverfahren). The results of the full analysis of leaves and branches show some interesting aspects about the differences between male and female plants. Furthermore, we observed differences between Russian and German sea buckthorn varieties. Investigation of minor components showed that vitamins were present in very low amount ( 0.1 %).
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机译：沙棘的叶子和树枝目前在修剪植物后会产生收获的废物/副产品。众所周知，沙棘浆果对于其化学成分很重要，因此，沙棘浆果在营养领域占据着广阔的地位。我们提出了一个想法，即沙棘的叶子，树枝，尤其是树皮，也具有非同寻常的化学成分，例如浆果。这项研究的目的是描述这些副产物。为此，对来自俄罗斯（七个品种）和德国（四个品种）的相应样品进行了详细的全面分析。尤其是对干燥质量，脂肪含量，蛋白质，碳水化合物，淀粉含量和粗纤维进行了研究，以获取概述。还研究了次要成分，例如总酚含量，金属以及水溶性和脂溶性维生素。所有分析参数均基于官方分析方法集（德国ASU-amtliche Sammlung von Untersuchungsverfahren）。叶片和树枝的完整分析结果显示了有关雄性和雌性植物差异的一些有趣方面。此外，我们观察到俄罗斯和德国沙棘品种之间的差异。对微量成分的研究表明，维生素的含量非常低（<0.1％）。
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