Yogurt酸奶

Food · Animal Foods · 乳制品

发酵降解乳糖, 乳糖不耐受者通常能耐受 · 希腊酸奶经过滤 → 蛋白翻倍、乳糖更低 · 益生菌是菌株+剂量决定的, 不是所有酸奶都算 · 看糖不看概念

What is yogurt · fermentation changes milk

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酸奶是什么 · 发酵改变了牛奶

Yogurt is milk fermented by specific bacteria. The core cultures are Lactobacillus delbrueckii subsp. bulgaricus and Streptococcus thermophilus. These bacteria metabolize lactose into lactic acid, dropping the pH and causing casein to gel in the acidic environment — which creates the characteristic thick texture.

This fermentation process does more than change flavor — it has several nutritionally meaningful consequences:

First, lactose is partly broken down, making yogurt better tolerated than milk by most lactose-intolerant people. Second, fermentation releases more free amino acids, theoretically improving digestive efficiency. Third, if live cultures are preserved (labeled 'contains active cultures'), these bacteria may offer probiotic-type effects — but that 'may' deserves careful attention, as effects depend on the specific strain and dose.

Under the single 'yogurt' label, products vary enormously: regular yogurt, Greek yogurt (strained), Icelandic Skyr, Australian-style, low-sugar/unsweetened, and flavored versions loaded with added sugar and fruit jam. Later scenes unpack each.

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