Unverified90% confidenceFactTime unknown
膳食纤维本身热量低(约1.5-2 kcal/g,远低于普通碳水4 kcal/g),但计算食品营养标签时,可溶性纤维仍需从总碳水中扣除以估算净碳水
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90%
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Long-term
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Unverified菊粉与低聚果糖热量约1.5-2 kcal/g,远低于普通碳水(4 kcal/g),且不升血糖,属于可标注膳食纤维的水溶性纤维90% similarUnverified看营养标签的碳水时要减去膳食纤维算净碳水:全麦意面标注碳水65g但纤维10g,净碳水55g;生酮或低碳饮食者应认准净碳水≤20g/100g的产品如魔芋面、大豆意面81% similarUnverified每份纤维含量约2-4g,远低于每日推荐膳食纤维摄入量,作为唯一纤维来源不足够,更适合作为饮食纤维的补充而非替代77% similarUnverified虽然热量约340kcal/100g并不算低,但因高纤维带来的强饱腹感,实际每次食用量较少(1-2片约20-30g),总摄入热量可控77% similarUnverified选购减脂代餐用途时,认准每根膳食纤维≥5g且总热量≤180kcal,膳食纤维密度(纤维克数/热量)应≥0.03g/kcal才具饱腹优势76% similar
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