Core Viewpoint - The article highlights various fruits that are rich in Vitamin C, emphasizing their health benefits and nutritional values, particularly in boosting immunity and providing antioxidant properties [1]. Group 1: Vitamin C Rich Fruits - **NO.1: Prickly Pear**: Known as the "Vitamin C King," it contains 2585 mg of Vitamin C per 100 grams, significantly higher than citrus fruits and kiwifruit. It also has high levels of carotenoids and various beneficial compounds [2]. - **NO.2: Winter Jujube**: Contains 243 mg of Vitamin C per 100 grams, which is 60-70 times that of apples. It is rich in dietary fiber and other vitamins, promoting immune health [4]. - **NO.3: Sea Buckthorn**: Offers 204 mg of Vitamin C per 100 grams, along with other vitamins and active compounds that support digestion and immunity [6]. - **NO.4: Kiwifruit**: Contains 62 mg of Vitamin C per 100 grams and is known for its antioxidant properties and ability to aid in blood sugar regulation [8]. - **NO.5: Hawthorn**: Provides 53 mg of Vitamin C per 100 grams and is beneficial for digestion and alleviating food stagnation [10]. - **NO.6: Grapefruit**: Contains 38 mg of Vitamin C per 100 grams and is noted for its potassium content, which can help lower blood pressure [12]. - **NO.7: Kumquat**: Offers 35 mg of Vitamin C per 100 grams and has various organic acids that provide health benefits [14]. - **NO.8: Orange**: Contains 33 mg of Vitamin C per 100 grams and is associated with various health benefits, including immune support and cardiovascular health [15]. Group 2: Importance of Vitamin C - Vitamin C is essential for human health, aiding in collagen synthesis, free radical elimination, and immune function. It cannot be synthesized by the body and must be obtained through diet [17]. - The recommended daily intake for adults is 100 mg, with a higher intake of 200 mg suggested for chronic disease prevention [17]. Group 3: Consumption Tips - Fresh fruit consumption is emphasized over fruit juices, as juicing can lead to significant Vitamin C loss due to oxidation [19]. - It is advised to consume fresh fruits promptly to retain their nutritional value, as prolonged storage can degrade their quality [20]. - For individuals with high blood sugar, it is recommended to limit fruit intake to 50-150 grams per day and to consume fruits in moderation to avoid spikes in blood sugar levels [22].

近些年，各种维生素C产品成了市场上的宠儿，不少商家都在宣传维生素C的好处，大到心血管疾病，小到感冒、口腔溃疡，甚至美容护肤，维生素C都能 发挥重要作用。然而，商家竭力推崇的天然维生素C，小小一瓶就要上百元，这和几元一瓶的维生素C有什么区别？与合成维生素C相比，天然维生素C真 的更好吗？ 维生素C有什么作用？ 维生素C（VitaminC）也叫"抗坏血酸"，它是人体不可或缺的一种营养成分。人体长期缺乏维生素C会导致坏血病，引起牙龈出血、牙齿脱落、皮肤问 题，严重时会危及生命。几百年前的大航海时代，很多海员出海后经常死于一种疾病——坏血病，后来发现就是因为缺乏维生素C，所以维生素C才被人 们称为"抗坏血酸"。 我们需要补充维生素C吗？ 其实，从人体补充维生素C的角度，天然维生素C和人工合成维生素C根本没有区别。首先，从结构上来说，天然维生素C和人工合成维生素C的化学结构 完全一样，二者只是来源方式不同。天然维生素是从食物中提取的维生素，合成维生素是利用人工合成的方法制造出的、具有相同成分的维生素。不少人 认为，人工合成的维生素C会用到化学试剂，其实，从植物提取维生素C也要用到化学试剂。而且维生素C是化学物质，我们人 ...