1. Citric acid is mainly used as sour agent, solubilizer, buffer, deodorizer, flavor enhancer, gelling agent, toner, etc. In addition, citric acid can also protect color, improve flavor and transform sucrose.

2、檸檬酸還具有螯合作用，能夠除去某些有害金屬。檸檬酸能夠防止因酶催化和金屬催化引起的氧化作用，從而阻止速凍水果變色變味。

2. Citric acid also has chelation and can remove some harmful metals. Citric acid can prevent the oxidation caused by enzyme catalysis and metal catalysis, so as to prevent the discoloration and taste of quick-frozen fruits.

3、在食品添加劑方面主要用于碳酸飲料、果汁飲料、乳酸飲料等清涼飲料和腌制品，其需求量受季節氣候的變化而有所變化。檸檬酸約占酸味劑總消耗量的2/3。

3. In terms of food additives, they are mainly used in cool drinks and pickled products such as carbonated drinks, fruit juice drinks and lactic acid drinks. Their demand varies with the change of season and climate. Citric acid accounts for about 2 / 3 of the total consumption of sour agent.

4、在水果罐頭中添加檸檬酸可保持或改進館藏水果的風味，提高某些酸度較低的水果罐藏時的酸度，減弱微生物的抗熱性和抑*其生長，防止酸度較低的水果罐頭常發生的*菌性脹罐和破壞。

4. Adding citric acid to canned fruits can maintain or improve the flavor of fruits in the collection, improve the acidity of some fruit cans with low acidity, weaken the heat resistance and inhibit the growth of microorganisms, and prevent the bacterial swelling and damage of canned fruits with low acidity.

檸檬酸在化工和紡織業的作用  檸檬酸在化學技術上可作化學分析用試劑，用作實驗試劑、色譜分析試劑及生化試劑；用作絡合劑，掩蔽劑；用以配制緩沖溶液。采用檸檬酸或檸檬酸鹽類作助洗劑，可**洗滌產品的性能；

The role of citric acid in chemical industry and textile industry citric acid can be used as chemical analysis reagent, experimental reagent, chromatographic analysis 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;

可以迅速沉淀金屬離子，防止污染物重新附著在織物上，保持洗滌必要的堿性；使污垢和灰分散和懸浮；提高表面**劑的性能，是一種優良的鰲合劑；可用作測試建筑陶瓷瓷磚的耐酸性的試劑。  服裝的甲醛污染已是很**的問題，檸檬酸和改性檸檬酸可制成一種無甲醛防皺整理劑，用于純棉織物的防皺整理。不僅防皺效果好，而且成本低。

It can rapidly precipitate metal ions, prevent pollutants from re adhering to the fabric and maintain the necessary alkalinity for washing; Disperse and suspend dirt and ash; It is an excellent chelating agent to improve the performance of surfactant; It can be used as a reagent to test the acid resistance of building ceramic tiles. Formaldehyde pollution of clothing is a serious problem. Citric acid and modified citric acid can be made into a formaldehyde free anti wrinkle finishing agent for anti wrinkle finishing of pure cotton fabrics. It not only has good anti wrinkle effect, but also has low cost.

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