食品和饮料
lewatit®ion exchangers and Lewatit®吸附者在分离过程中发挥至关重要的作用。通常不替代地从液相中隔离，富集和清洁有价值的材料。lewatit®makes a decisive contribution to giving the products resulting from separation processes a purity, shelf life, pleasant taste, and good appearance that meets specifications.
食品行业的一个重要应用是加工糖。在食品和饮料行业广泛使用的晶体和液体糖的大规模生产几乎不会在经济上可行而无需大孔的lewatit®S types. The resins are used in the purification of raw sugar of various qualities. In addition to salt ions, they remove the yellowish-brown components that give raw sugar its color and typical taste.
Another important area of application for Lewatit®S grades is the starch industry. This produces high-quality syrups and polyalcohols on the basis of starch hydrolysates for use as sweeteners, e.g., in soft drinks. Lewatit® offers a large number of special ion exchangers for the desalination and decoloring (refining) of these syrups.
lewatit®ion exchangers also play a decisive role in ensuring product quality in other areas of the food and beverage industry. These include the processing of fruit juices, gelatin, whey, wine, and pectin.
For these and other applications, LANXESS offers a comprehensive range of special ion exchange resins that are tailored to specific requirements.
多糖的水解和oligosaccharides is catalyzed by H+ ions. The splitting off of sucrose leads to a mixture of glucose and fructose, which turns polarized light to the left. This process is well known as inversion. The resulting mixture is invert sugar, which is processed into artificial honey and liquid sugar. Liquid sugar, in particular, has grown in importance as it is widely used to sweeten non-alcoholic soft drinks.
Nowadays, inulin is used as an ingredient in food production, for example in yogurt as a fat substitute and to improve the taste, texture, and mouthfeel. In sausages it is used to increase the fiber content. Inulin is one of the prebiotic food additives. It also serves as a base for the hydrolytic production of fructose and oligofructose. Inulin can be extracted from the beets of, for example, chicory and topinambur.
富含盐的原料薄果汁必须通过离子交换树脂脱矿质。混合 -与lewatit的床安排®resins are used for subsequent polishing of the fructose.
lewatit®MDS类型是单分散离子交换树脂，其具有均匀系数<1.1，粒度在290至370μm之间。这些树脂可商购在具有模拟移动床设备的色谱分离过程中，例如，从糖蜜，葡萄糖分离，糖分子的尺寸分离，有机酸分离的含糖和氨基酸的分离。
从玉米，小麦，土豆，水稻，木薯等原材料，淀粉工业使用淀粉的酶水解生产各种甜味剂。淀粉水解后，排放®resins are used for processing, e.g., of glucose and maltose, by demineralization and decolorization of the syrup. Proteins and residues of by-products can be removed as well.
For syrups with a high dextrose equivalent, such as B. dextrose and fructose (after isomerization), and also syrups with a low dextrose equivalent, e.g., glucose and maltose, Lewatit®树脂用于共流或反式电流系统，优选在双通/旋转圆形系统中。
The commercial production of lactic acid is typically done by fermentation from different sources of carbohydrates. Food acids such as citric and lactic acid need to be demineralized after fermentation, mainly to eliminate sulfuric acid and sulfate ions. Effective resins for the demineralization of food acids are strong acid, gel-type Lewatit®S resins combined with weak base anion Lewatit®树脂。
Gelatin and collagen hydrolysates are pure collagen protein, which is obtained from animal raw materials from pigs, cattle, or fish. This raw material is collagen-rich tissue from animals, which has been approved for human consumption and which meets the requirements of gelatin and collagen production. The polypeptides contained in the raw material are treated with a gentle, enzymatic process until the desired molecular weight of the peptides is reached.
取决于酶和水合条件，最终产物可以在分子量或其他参数的分布方面更强烈地偏离。与经典明胶，胶原蛋白肽或胶原水解产物没有胶凝能力。
In order to meet the requirements of the food, pharmaceutical, and cosmetics industries, desalination and decolorization in combination with polishing with Lewatit®ion exchange resins may be necessary.
菠萝汁主要来自废物饰边，含有大约10％的糖和极高量的柠檬酸和含氮组分。允许用作罐装糖浆，脱矿质和部分偏差是necessary. In view of the high concentration of acid and salts, double-pass filtration is recommended.
使用弱阴离子树脂中和橙汁，橙汁，新鲜提取或重构的果汁。树脂减少了游离柠檬酸以及更弱解离的酸如抗坏血酸和叶酸。为了恢复有价值的抗坏血性和叶酸，可取的是“过载”树脂，以确保通过更强的柠檬酸置换。
Another specific application for adsorber resin is debittering of orange juice. Orange juice contains 20–30 ppm bitter components like limonin or hesperidin, which could otherwise be tasted.
