The difference between yeast cell wall and yeast hydrolysate is

The main differences between yeast cell wall and yeast hydrolysate are as follows:酵母细胞壁与酵母水解物的主要区别如下：

Different components 不同的组件

Yeast cell wall: 酵母细胞壁：

      The main components are pectin, mannan, and a small amount of protein and chitin. Among them, pectin is generally divided into alkali insoluble pectin and alkali soluble pectin, which have certain differences in structure and function. Mannan is a complex polysaccharide that often has branching structures and can play unique physiological roles in animal intestines, such as adsorbing harmful bacteria in the intestine.主要成分是果胶、甘露聚糖、少量蛋白质和几丁质。其中，果胶一般分为碱不溶性果胶和碱溶性果胶，它们在结构和功能上有一定的区别。甘露聚糖是一种复杂的多糖，通常具有分支结构，可以在动物肠道中发挥独特的生理作用，如吸附肠道中的有害细菌。

      For example, in the cell wall of beer yeast, the content of pectin is relatively high, which has a positive impact on enhancing the body's immunity and other aspects.例如，在啤酒酵母的细胞壁中，果胶的含量就比较高，对增强人体免疫力等方面都有积极的影响。

      It is a product obtained by the hydrolysis of yeast cells through autolysis or external enzyme processes. Its components include a large number of amino acids, small peptides, nucleotides, B vitamins, and other nutrients inside yeast cells. It has a relatively rich variety of amino acids, covering various essential and non essential amino acids required by the animal body, which can supplement high-quality nitrogen sources and other nutrients for animals.它是酵母细胞通过自溶或外部酶过程水解得到的产物。它的成分包括酵母细胞内的大量氨基酸、小肽、核苷酸、B族维生素和其他营养物质。它的氨基酸种类比较丰富，涵盖了动物机体所需的各种必需和非必需氨基酸，可以为动物补充优质氮源等营养物质。

      For example, yeast hydrolysates prepared through specific enzymatic hydrolysis processes can have a high level of small peptide content, which is more conducive to animal digestion and absorption.例如，通过特定的酶水解工艺制备的酵母水解物可以具有高水平的小肽含量，这更有利于动物的消化和吸收。

Different production processes不同的生产工艺

Yeast cell wall: 酵母细胞壁：

      Generally, yeast is first subjected to wall breaking treatment, and then the cell wall is separated from other components of yeast cells using physical, chemical, and other methods. After purification, refinement, and other multiple processes, a relatively pure yeast cell wall product is obtained. The commonly used methods for breaking cell walls include high-pressure homogenization and enzymatic hydrolysis, followed by centrifugation, filtration, and other operations to remove impurities and concentrate cell wall components.一般来说，酵母首先要进行破壁处理，然后用物理、化学和其他方法将细胞壁与酵母细胞的其他成分分离。经过纯化、精制等多道工序，得到了较为纯净的酵母细胞壁产品。常用的破壁方法有高压均质和酶解，然后进行离心、过滤等操作，去除杂质，浓缩细胞壁成分。

      For example, when using high-pressure homogenization method, yeast cells are subjected to strong shear forces and other effects in an instant through high pressure, causing the cell wall to be broken. Subsequently, the components of the cell wall are extracted for processing.例如，在使用高压均质法时，酵母细胞通过高压在瞬间受到强大的剪切力等作用，导致细胞壁破裂。随后，提取细胞壁成分进行处理。

Yeast hydrolysate: 水解酵母:

      The main production processes include autolysis and enzymatic hydrolysis. Autolysis method is the use of the enzyme system contained in yeast cells, under suitable temperature, pH and other conditions, to allow the enzymes inside yeast cells to exert their effects, gradually decomposing their own proteins and other large molecular substances, producing amino acids, small peptides and other components; The enzymatic hydrolysis method involves adding specific proteases, nucleases, etc. to specifically hydrolyze proteins, nucleic acids, etc. inside yeast cells, thereby obtaining hydrolysates containing multiple nutrients.

      For example, when producing yeast hydrolysates for animal feed additives in aquaculture, using appropriate proteases for enzymatic hydrolysis can better break down the proteins in yeast into small peptide forms that are easily digested and absorbed by aquatic animals.

Different functional characteristics

Yeast cell wall:

      It has immune enhancement function, in which pectin can activate the immune cells of animal body, such as macrophages, to enhance their activity, improve the non-specific immune ability of the body, and help animals better resist the invasion of external pathogens; Meanwhile, mannan can adsorb harmful bacteria in the intestine, regulate the balance of intestinal microbiota, reduce the colonization of harmful bacteria in the intestine, and promote intestinal health.

Yeast hydrolysate:

      The nutritional function is more prominent, as it is rich in various amino acids, small peptides, nucleotides and other nutrients, which can provide comprehensive and high-quality nutrition for animals, promote their growth and development, and improve the utilization rate of feed. Meanwhile, the nucleotides and other components in it have a certain effect on the proliferation and repair of animal intestinal cells, which can improve the digestion and absorption function of the intestine, maintain the normal structure and functional integrity of the intestine.

Different appearance and characteristics

Yeast cell wall:

      Generally, it is a light yellow or off white powdery substance with a fine texture, good fluidity, and no obvious odor. It usually has poor solubility in water and some components may be suspended.

Yeast hydrolysate:

      It is mostly a light yellow to brownish yellow powder with a yeast specific odor. It has relatively strong hygroscopicity and is prone to clumping when placed in a high humidity environment. Moreover, its solubility is better than that of yeast cell walls. The small molecular components produced by partial hydrolysis can dissolve to some extent in water.

There are differences in the scope of application

Yeast cell wall:

      Widely used in animal husbandry, aquaculture and other fields, it is often added to animal feed as an immune enhancer and intestinal health regulator to enhance the immunity and disease resistance of animals; It also has applications in the field of pet food, helping to improve the intestinal microbiota of pets and enhance their resistance.

Yeast hydrolysate:

      In addition to being used as a high-quality protein source and nutritional supplement in animal husbandry and aquaculture, it can also be used as a nutritional enhancer in the food industry for the production of some functional foods, supplementing the human body with amino acids, nucleotides and other nutrients; In the fermentation industry, it can also be used as a nitrogen source and other nutrients for microbial cultivation.

      In summary, although yeast cell walls and yeast hydrolysates both originate from yeast, they have significant differences in many aspects and each plays a unique role.