冷知识：真的不建议大家买超大蓝莓！

Blueberries are currently in season and flying off the shelves. However, it's not their price, but their size that is turning heads. The commonly seen berries with a diameter of 12 to 14 millimeters are now considered mini-fruits, with some giant blueberries reaching up to 30 millimeters in diameter – nearly as large as cherries.

那么，蓝莓越大，营养越多吗？

蓝莓的花青素含量极高

对经常用眼的人群来说，蓝莓中的花青素是少数能直达眼底的抗氧化物质，有助缓解眼睛干涩、酸胀。蓝莓中的酚类物质能辅助降低血管的炎症反应，膳食纤维则有助于调节血脂水平，对维护心血管健康很有帮助。

每100克蓝莓的花青素含量大概在70毫克～500毫克之间！每天只需吃10—20颗中小型蓝莓（直径14—16毫米），就能轻松满足身体对花青素的每日所需。

Blueberries are extremely rich in anthocyanins. For those who spend long hours in front of screens, anthocyanins are one of the few antioxidants that can reach the eye area, helping to alleviate dryness and soreness. Furthermore, phenolic compounds in blueberries can help reduce vascular inflammation, while dietary fiber assists in regulating blood lipid levels, contributing to cardiovascular health.

The anthocyanin content in every 100 grams of blueberries ranges from approximately 70 to 500 milligrams. Consuming just 10 to 20 small or medium-sized blueberries (14-16 mm in diameter) daily can easily meet the body's anthocyanin needs.

同等重量下，蓝莓越小

果皮占比越高营养越多

花青素是植物中的一种天然色素，是青蓝色的，哪里颜色深，哪里就藏着丰富的花青素。而蓝莓，表皮颜色深，肉果青白色，也就是说花青素主要分布在果皮里。

研究显示，同等重量下，大蓝莓的果皮表面积要小于小蓝莓的果皮表面积。这意味着，同样重量的蓝莓，小蓝莓数量更多，吃到的果皮面积就更大，花青素含量自然就更多了。

Anthocyanins are natural, blue-colored pigments found in plants. They are concentrated where the color is deepest. For blueberries, the pigment is in the dark skin, while the flesh is pale, meaning the anthocyanins are primarily located in the skin.

Research indicates that for the same weight, the total surface area of the skin from many small blueberries is greater than that of a few large ones. This means that when eating an equal weight of blueberries, you consume more skin area with smaller berries, and consequently, more anthocyanins.

同时，《农业与食品化学杂志》2020年对12个蓝莓品种的测定显示，小果型蓝莓的花青素含量和抗氧化能力普遍高于大果型。

A 2020 study published in the Journal of Agricultural and Food Chemistry analyzing 12 blueberry varieties confirmed that small-sized blueberries generally have higher anthocyanin content and antioxidant capacity than large-sized ones.

口感上大果蓝莓也未必占优

大果蓝莓因细胞体积大，果胶易降解，长途运输后容易出现“水唧唧”的口感，甚至可能爆酸；而中小果蓝莓果皮更厚、果肉致密，糖分浓缩，风味更浓郁。

When it comes to taste, large blueberries don't necessarily have the advantage either. Due to their larger cell volume, the pectin in large berries can degrade more easily, leading to a watery texture, especially after long-distance transport, and they can sometimes be surprisingly tart. In contrast, small and medium-sized blueberries have thicker skins and denser flesh, with more concentrated sugars, resulting in a richer flavor.

蓝莓多吃好吗

花青素并不是摄入得越多越好。

花青素是一种强有力的抗氧化剂，它能够保护人体免受自由基的损伤。但过多的花青素还会妨碍矿物质的吸收，贫血、缺锌的人群最好不要吃太多的花青素。

胃肠道不太好的人群，也不建议吃太多蓝莓。

However, anthocyanins are not something to be consumed in unlimited quantities. While they are powerful antioxidants that protect the body from free radical damage, excessive intake can interfere with mineral absorption. Therefore, individuals with anemia or zinc deficiency should avoid consuming very high amounts. Additionally, people with gastrointestinal issues are also advised not to eat too many blueberries.

来源：光明日报 数字北京科学中心 科普中国

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