葡萄糖酸鈉是一種常見(jiàn)的、具有廣泛用途的有機(jī)酸鈉鹽。工業(yè)級(jí)的葡萄糖酸鈉常用于建筑、化工等行業(yè)。目前國(guó)內(nèi)幾種生產(chǎn)方法，下面精萘廠家為您講講：

Sodium Gluconic acid is a common and widely used organic acid sodium salt. Industrial grade sodium Gluconic acid is commonly used in construction, chemical and other industries. At present, there are several production methods in China, and the following refined naphthalene manufacturers will explain to you:

生物發(fā)酵法

Biological fermentation method

發(fā)酵法是比較傳統(tǒng)的葡萄糖酸鈉生產(chǎn)方法，其中較普遍采用的是黑曲霉菌發(fā)酵制葡萄糖酸鈉工藝，優(yōu)點(diǎn)是初糖濃度高、控制溫度高（濃度30%以上，溫度40℃，這是所有發(fā)酵有機(jī)酸中少有的）、發(fā)酵過(guò)程易于控制、生產(chǎn)穩(wěn)定溫和、易于大工業(yè)化生產(chǎn)。同時(shí)具有成本低，質(zhì)量易控制等優(yōu)點(diǎn)是目前國(guó)內(nèi)工業(yè)化生產(chǎn)葡萄糖酸鈉的主要生產(chǎn)方法。缺點(diǎn)是生產(chǎn)周期長(zhǎng)（48-56h），生產(chǎn)過(guò)程菌絲體難過(guò)濾，難處理，發(fā)酵設(shè)備數(shù)量多投資大，活性炭用量大等。

The fermentation method is a more traditional production method of sodium Gluconic acid. Among them, the technology of producing sodium Gluconic acid by Aspergillus niger fermentation is widely used, which has the advantages of high initial sugar concentration, high control temperature (concentration above 30%, temperature 40 ℃, which is rare in all fermented organic acids), easy control of fermentation process, stable and mild production, and easy to large-scale industrial production. At the same time, it has the advantages of low cost and easy quality control, which is the main production method for industrial production of sodium Gluconic acid in China. The disadvantages are long production cycle (48-56h), difficult filtration and treatment of Mycelium in the production process, large amount of fermentation equipment and investment, and large amount of activated carbon.

2.多相催化氧化法

2. Heterogeneous catalysis oxidation

該法工藝簡(jiǎn)單，反應(yīng)平穩(wěn)。缺點(diǎn)是所用催化劑在循環(huán)使用一定次數(shù)后，催化效率下降，反應(yīng)時(shí)間延長(zhǎng)甚至基本無(wú)催化活性，催化劑必須報(bào)廢更新，相應(yīng)提高了單位產(chǎn)品催化劑耗量，也使葡萄糖酸鈉產(chǎn)品生產(chǎn)成本提高。由于金屬催化劑具有一定的毒性，其產(chǎn)品通常不能作為食品添加劑由于食品生產(chǎn)，因此，產(chǎn)品應(yīng)用受到一定限制。

This method has simple process and stable reaction. The disadvantage is that after the catalyst is recycled for a certain number of times, the catalytic efficiency will decline, the reaction time will be prolonged, and even the catalyst will be basically inactive. The catalyst must be scrapped and renewed, which correspondingly increases the catalyst consumption per unit product, and also increases the production cost of sodium Gluconic acid product. Due to the certain toxicity of metal catalysts, their products are usually not suitable as food additives due to food production, therefore, their application is limited.

3.雙酶法

3. Double enzyme method

雙酶法生產(chǎn)葡萄糖酸鈉是近幾年新開發(fā)的一種方法，主要適合于大中型生產(chǎn)，特別適合于液體葡萄糖酸鈉生產(chǎn)應(yīng)用。酶法生產(chǎn)葡萄糖酸鈉，是用葡萄糖氧化酶和過(guò)氧化氫酶和葡萄糖溶液進(jìn)行酶法反應(yīng)，反應(yīng)過(guò)程中添加氫氧化鈉，終得到葡萄糖酸鈉。酶法生產(chǎn)工藝的特點(diǎn)是：工藝簡(jiǎn)單、反應(yīng)條件溫和，產(chǎn)品純度高、生產(chǎn)周期短（20-24h）、設(shè)備相對(duì)發(fā)酵法少等。

The production of sodium Gluconic acid by double enzyme method is a newly developed method in recent years, which is mainly suitable for large and medium-sized production, especially for the production and application of liquid sodium Gluconic acid. Enzymatic production of sodium Gluconic acid is an enzymatic reaction between glucose oxidase and Catalase and glucose solution. Sodium hydroxide is added in the reaction process to finally obtain sodium Gluconic acid. The characteristics of enzymatic production process are: simple process, mild reaction conditions, high product purity, short production cycle (20-24 hours), and fewer equipment compared to fermentation method.

目前國(guó)內(nèi)葡萄糖酸鈉的生產(chǎn)方法主要有生物發(fā)酵法、雙酶法、多相催化氧化法3種。國(guó)內(nèi)目前大工業(yè)生產(chǎn)中主要采用生物發(fā)酵法和雙酶法。多相催化氧化法由于使用重金屬催化劑具有一定的毒性，并且收率和純度較低，且其產(chǎn)品通常不能作為食品添加劑用于食品生產(chǎn)，因而此生產(chǎn)工藝基本停用。您有什么疑惑就來(lái)我們網(wǎng)站http://m.ica.net.cn咨詢吧！

At present, the domestic production methods of sodium Gluconic acid mainly include biological fermentation, double enzyme method and Heterogeneous catalysis oxidation. At present, biological fermentation and double enzyme methods are mainly used in large-scale industrial production in China. The Heterogeneous catalysis oxidation process is basically stopped because the use of heavy metal catalysts has certain toxicity, low yield and purity, and its products cannot be used as food additives in food production. If you have any doubts, come to our website http://m.ica.net.cn Consult!