The goals of this research were determined the proximate composition, physico-chemical, techno-functional properties, the polyphenolic profile, the organic acids and sugar content and the antioxidant capacities of flours obtained from almonds skins var. comuna (ASFC) and var. fritz (ASFF) coproducts produced in Turrón industry. The chemical composition and physico-chemical properties (pH, water activity and color) were determined. The water holding, oil holding and swelling capacities were also determined, as well as the polyphenolic profile. For the antioxidant capacity, four different assays were used namely: 2,2-diphenyl-1-picrylhydrazyl radical scavenging assay (DPPH^•); Ferrous ions chelating activity (FIC); Ferric reducing antioxidant power (FRAP) and 2,2′-azinobis-(3-ethylbenzothiazoline-6-sulfonic acid) radical scavenging assay (ABTS^•+). The flours obtained from ASFC and ASFF had a high content of dietary fiber (70.50 and 69.83 g/100 g, respectively). The polyphenolic profile, determined by High Performance Liquid Chromatography, identified 21 and 19 polyphenolic compounds in both ASFC and ASFF, being epicatechin and catechin the most abundant compounds. In reference to the antioxidant capacity regards, with all methods assayed except FRAP, ASFC had higher antioxidant activity than ASFF. These coproducts show good technological and antioxidant properties, which makes them a good alternative for its use in the development of new foods.

中文翻译：

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Turrón副产品作为生物活性化合物的来源：化学，物理化学，技术功能和抗氧化性能的评估。

这项研究的目标是确定从杏仁皮获得的面粉的近似组成，理化，技术功能特性，多酚分布，有机酸和糖含量以及抗氧化能力。comuna（ASFC）和var。Turrón工业中生产的弗里兹（ASFF）副产品。测定了化学成分和理化性质（pH，水活度和颜色）。还测定了保水，保油和溶胀能力，以及多酚特性。对于抗氧化能力，使用了四种不同的测定方法，即：2,2-二苯基-1-吡啶并肼基自由基清除测定法（DPPH ^•）; 亚铁离子螯合活性（FIC）；还原铁的抗氧化能力（FRAP）和2,2'-叠氮基双（3-乙基苯并噻唑啉-6-磺酸）自由基清除试验（ABTS ^•+）。从ASFC和ASFF获得的面粉具有高含量的膳食纤维（分别为70.50和69.83 g / 100 g）。通过高效液相色谱法测定的多酚分布情况，确定了ASFC和ASFF中的21种和19种多酚化合物，其中表儿茶素和儿茶素含量最高。关于抗氧化能力方面，除FRAP以外，使用所有其他测定方法，ASFC的抗氧化活性均高于ASFF。这些副产品显示出良好的技术和抗氧化性能，使其成为开发新食品时的良好替代品。