For food industry

因为柠檬酸有温和爽快的酸味，普遍用于各种饮料、汽水、葡萄酒、糖果、点心、饼干、罐头果汁、乳制品等食品的制造。在所有有机酸的市场中，柠檬酸市场占有率 70%以上，调味剂，也可用作食用油的抗氧化剂。同时改善食品的感官性状，增强食欲和促进体内钙、磷物质的消化吸收。无水柠檬酸大量用于固体饮料。柠檬酸的盐类如柠檬酸钙和柠檬酸铁是某些食品中需要添加钙离子和铁离子的强化剂。柠檬酸的酯类如柠檬酸三乙酯可作无毒增塑剂，制造食品包装用塑料薄膜，是饮料和食品行业的酸味剂，防腐剂。

Because citric acid has a mild and refreshing sour taste, it is widely used in the manufacture of various beverages, soft drinks, wine, candy, snacks, biscuits, canned fruit juices, dairy products and other foods. In the market of all organic acids, citric acid has a market share of more than 70%. Flavoring agent can also be used as antioxidant of edible oil. At the same time, improve the sensory properties of food, enhance appetite and promote the digestion and absorption of calcium and phosphorus substances in the body. Anhydrous citric acid is widely used in solid drinks. Salts of citric acid, such as calcium citrate and iron citrate, are fortifiers that need to add calcium and iron ions to some foods. Esters of citric acid, such as triethyl citrate, can be used as non-toxic plasticizers, plastic films for food packaging, and sour agents and preservatives in the beverage and food industries.

用于化工和纺织业

For chemical and textile industries

柠檬酸在化学技术上可作化学分析用试剂，用作实验试剂、色谱分析试剂及生化试剂；用作络合剂，掩蔽剂；用以配制缓冲溶液。采用柠檬酸或柠檬酸盐类作助洗剂，可改善洗涤产品的性能，可以迅速沉淀金属离子，防止污染物重新附着在织物上，保持洗涤必要的碱性；使污垢和灰分散和悬浮；提高表面活性剂的性能，是一种优良的鳌合剂；可用作测试建筑陶瓷瓷砖的耐酸性的试剂。

Citric acid can be used as reagent for chemical analysis, experimental reagent, chromatographic reagent and biochemical reagent in chemical technology; Used as complexing agent and masking agent; Used to prepare buffer solution. Using citric acid or citrate as washing aid can improve the performance of washing products, quickly precipitate metal ions, prevent pollutants from re adhering to the fabric, and maintain the necessary alkalinity for washing; Disperse and suspend dirt and ash; Improving the performance of surfactant is an excellent chelating agent; It can be used as a reagent to test the acid resistance of building ceramic tiles.

服装的甲醛污染已是很敏感的问题，柠檬酸和改性柠檬酸可制成一种无甲醛防皱整理剂，用于纯棉织物的防皱整理。不仅防皱效果好，而且成本低。

Formaldehyde pollution of clothing is already a very sensitive problem. Citric acid and modified citric acid can be made into a formaldehyde free crease resistant finishing agent for crease resistant finishing of pure cotton fabrics. It not only has good wrinkle prevention effect, but also has low cost.

用于环保

For environmental protection

柠檬酸-柠檬酸钠缓冲液用于烟气脱硫。中国煤炭资源丰富，是构成能源的主要部分，然而一直缺乏有效的烟气脱硫工艺，导致大气SO2污染严重。研究有效的脱硫工艺，实为当务之急。柠檬酸-柠檬酸钠缓冲溶液由于其蒸气压低、无毒、化学性质稳定、对SO2吸收率高等原因，是**开发价值的脱硫吸收剂。

Citric acid sodium citrate buffer is used for flue gas desulfurization. China is rich in coal resources, which is the main part of energy. However, there has been a lack of effective flue gas desulfurization process, resulting in serious atmospheric SO2 pollution. It is urgent to study effective desulfurization process. Citric acid sodium citrate buffer solution is a desulfurization absorbent of * * development value because of its low vapor pressure, non-toxic, stable chemical properties and high SO2 absorption rate.

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