1. Citric acid is mainly used as sour taste agent, solubilizer, buffer, antioxidant, deodorizer, flavor enhancer, gelling agent, toner, etc. In addition, citric acid can inhibit bacteria, protect color, improve flavor and promote sucrose conversion.

2、檸檬酸還具有螯合作用，能夠清除某些有害金屬。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 chelating effect and can remove some harmful metals. Citric acid can prevent the oxidation caused by enzyme catalysis and metal catalysis, thus preventing 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(jié)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, it is mainly used for cool drinks and pickled products such as carbonated drinks, fruit juice drinks and lactic acid drinks, and its demand varies with seasonal climate changes. Citric acid accounts for about 2 / 3 of the total consumption of sour taste 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制其生長，防止酸度較低的水果罐頭常發(fā)生的細菌性脹罐和破壞。

4. Adding citric acid to canned fruits can maintain or improve the flavor of stored fruits, improve the acidity of some fruits with low acidity when stored in cans, weaken the heat resistance and inhibit the growth of microorganisms, and prevent the bacterial expansion and destruction of canned fruits with low acidity.

檸檬酸在化工和紡織業(yè)的作用檸檬酸在化學(xué)技術(shù)上可作化學(xué)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(luò)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，可改善洗滌產(chǎn)品的性能；

The role of citric acid in chemical industry and textile industry citric acid can be used as reagent for chemical analysis in chemical technology, as experimental reagent, chromatographic analysis reagent and biochemical reagent; 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??；提高表面活性劑的性能，是一種優(yōu)良的鰲合劑；可用作測試建筑陶瓷瓷磚的耐酸性的試劑。

It can rapidly precipitate metal ions, prevent contaminants from re adhering to the fabric, and maintain the alkalinity necessary 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 for testing the acid resistance of building ceramic tiles.

服裝的甲醛污染已是很敏感的問題，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。

The formaldehyde pollution of clothing is a very sensitive problem. Citric acid and modified citric acid can be used as a formaldehyde free anti wrinkle finishing agent for the anti wrinkle finishing of pure cotton fabrics. It not only has good wrinkle prevention effect, but also has low cost.

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