Early- to mid-season apple cultivars have recently been developed in response to global warming; however, their metabolite compositions remain unclear. Herein, metabolites, such as free sugars, and organic acids and antioxidant activity were determined in 10 new and 14 traditional apple cultivars. Additionally, the phenolic profiles of the apple pulp and peel were characterized by high-resolution mass spectrometry. Major phenolic compounds in apples varied depending on the cultivar and tissue (i.e., peel or pulp). Among the new apple cultivars, Decobell and Tinkerbell, showed high antioxidant activity and contained higher phenolic compound content than other cultivars in the peel and pulp, respectively. Honggeum showed high phenolic content with similar sugar to acid ratio compared to popular traditional cultivars. In addition to antioxidant phenolic contents, metabolite profile information can be used to select apple cultivars for various purposes. For example, Indo can be selected for sweet apple taste because of its higher sugar to acid ratio. This information can be used to select apple cultivars for various purposes. For example, Decobell peel could be used as sources of food supplements and food additives, and Tinkerbell pulp can be utilized for apple juice making according to its metabolite profile.

中文翻译：

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10个新的早中中期苹果品种和14个传统品种的代谢产物分析和抗氧化活性。

为了应对全球变暖，最近开发了早期至中期的苹果品种。然而，它们的代谢物组成仍不清楚。在此，确定了10个新品种和14个传统苹果品种中的代谢产物（例如游离糖）和有机酸以及抗氧化活性。另外，苹果果肉和果皮的酚类特征通过高分辨率质谱法表征。苹果中的主要酚类化合物因品种和组织（即果皮或果肉）而异。在新的苹果品种中，Decobell和Tinkerbell具有较高的抗氧化活性，并且果皮和果肉中的酚类化合物含量均高于其他品种。与流行的传统品种相比，红杏叶显示出较高的酚含量，糖酸比相似。除抗氧化剂酚含量外，代谢物概况信息还可用于选择苹果品种，以用于各种目的。例如，因其较高的糖酸比率，可以选择Indo作为甜苹果的口味。该信息可用于选择各种目的的苹果品种。例如，Decobell果皮可以用作食品补充剂和食品添加剂的来源，Tinkerbell果肉可以根据其代谢产物特性用于制造苹果汁。