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3種水果膳食纖維最高! 「最佳食用時機」專家解答了

ETtoday
2025/03/20 | 2分鐘閱讀

記者李佳蓉/綜合報導

營養學專家洪泰雄老師分享「膳食纖維最高的3種水果」,分別是覆盆子、黑莓與芭樂。想要促進排便與腸道健康,他建議攝取不可溶性纖維特別高的覆盆子與黑莓;若要穩定血糖與膽固醇,則可吃富含果膠的芭樂;而想要增強免疫力與抗氧化,這3種富含維生素C與抗氧化劑的水果適合輪流食用。

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洪泰雄老師在臉書指出,膳食纖維對於腸道健康、穩定血糖與降低膽固醇,都具有顯著的益處。並列出膳食纖維含量最高的3種水果,其一為覆盆子,每100克含有6.5克膳食纖維,其中約70~75%為不可溶性纖維,如纖維素與木質素,主要來自它的小核果結構和豐富的種子。

洪泰雄解釋,每個覆盆子是由許多小核果組成,其種子富含不可溶性纖維,幫助促進腸道蠕動與預防便秘。此外,覆盆子水分相較於其他水果略低,比例約85%,因此纖維比例顯得更高。雖然其可溶性纖維(果膠)比例較低,但可幫助穩定血糖與膽固醇。

接著是與覆盆子同屬薔薇科的黑莓,洪泰雄表示,其膳食纖維主要來自豐富的種子與較厚的果皮,每100克約含有5.3克膳食纖維。他說,黑莓的種子較小、數量多,富含不可溶性纖維,有助於增加糞便體積、促進排便。此外,它富含多酚與花青素,這些抗氧化劑與膳食纖維結合,能減少腸道發炎與氧化壓力。

最後則是每100克含有5.4克膳食纖維的芭樂,洪泰雄說,其膳食纖維來自於果皮、果肉與種子,並含有大量的可溶性纖維,對於穩定血糖與膽固醇特別有益。芭樂的種子含有一定量的木質素與纖維素,雖然質地較硬但纖維含量不可忽視。其低熱量、高纖維的特性,既能增加飽足感又不易造成熱量過剩,對於想控制體重者是理想選擇。高纖維加上豐富維生素C,不僅促進腸道蠕動,還有助於增強免疫力。

提及上述3種水果膳食纖維特別高的原因。洪泰雄指出,覆盆子與黑莓的種子比例高,富含不可溶性纖維;而芭樂的果皮與種子也是纖維的主要來源;此外,這3種水果的水分都比一般水果低、纖維相對集中,含量自然較高;覆盆子與黑莓以不可溶性纖維為主,而芭樂則有大量的可溶性纖維,對腸道與血糖都有幫助。

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