檸檬酸主要應用領域有以下幾種：

The main application areas of citric acid are as follows:

　　食品工業(yè)領域：因為檸檬酸具有溫和爽快的酸味，所以多用于各種飲料、汽水、罐頭果汁、乳制品等。因為檸檬酸除了當調味劑之外還可以用作食用油的抗氧化劑。

In the field of food industry: Due to its mild and refreshing sour taste, citric acid is commonly used in various beverages, soda, canned fruit juice, dairy products, etc. Because citric acid can also be used as an antioxidant in edible oils in addition to being a seasoning agent.

　　化工和紡織業(yè)領域：在化學技術上檸檬酸可作化學分析用試劑，實驗試劑、色譜分析試劑、絡合劑、掩蔽劑，還可以配制緩沖溶液。用檸檬酸做助洗劑時，可以改善洗滌產品的性能，使金屬離子迅速沉淀。

In the fields of chemical and textile industries, citric acid can be used as a chemical analysis reagent, experimental reagent, chromatographic analysis reagent, complexing agent, masking agent, and can also be used to prepare buffer solutions in chemical technology. When using citric acid as a washing aid, it can improve the performance of the washing product and facilitate the rapid precipitation of metal ions.

　　環(huán)保領域：檸檬酸—檸檬酸鈉緩沖液可用于煙氣脫硫。檸檬酸—檸檬酸鈉緩沖液由于蒸氣壓低、無毒、化學性質穩(wěn)定等特征，是極具開發(fā)價值的硫吸收劑。

Environmental protection field: Citric acid sodium citrate buffer can be used for flue gas desulfurization. Citric acid sodium citrate buffer is a highly valuable sulfur absorbent due to its low vapor pressure, non toxicity, and stable chemical properties.

　　禽畜生產領域：在仔豬的飼料中添加檸檬酸可以促使飼料利用率的提高。除此以外檸檬酸土是一種新型高效的飼料添加劑，使用后可促進動物生長，改善產品品質，提高抗病能力和成活率。

In the field of poultry and livestock production, adding citric acid to the feed of piglets can improve feed utilization efficiency. In addition, citric acid soil is a new and efficient feed additive that can promote animal growth, improve product quality, enhance disease resistance and survival rate after use.

　　醫(yī)藥行業(yè)領域：枸櫞酸根離子與鈣離子能形成一種難以解離的可溶性絡合物，從而降低了血中鈣離子濃度，使得血液凝固受阻。

In the pharmaceutical industry, citrate ions and calcium ions can form a soluble complex that is difficult to dissociate, thereby reducing the concentration of calcium ions in the blood and hindering blood coagulation.

　　除了檸檬酸主要應用領域以外，檸檬酸其它的應用領域還有很多，如：用于化妝品、用于殺菌，因為它還在高等生物體內發(fā)生轉化，所以還可用于保養(yǎng)身體。

In addition to the main application areas of citric acid, there are many other application areas of citric acid, such as in cosmetics and for sterilization. Because it also undergoes transformation in higher organisms, it can also be used to maintain the body.

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