Amber chili peppers processed using traditional sugar boiling methods often lose their original flavor and fail to deliver the desired heat. However, by following a more advanced processing technique, the resulting amber peppers not only retain their authentic taste but also offer a balanced sweetness and spiciness, with a more complex flavor profile and a crisp texture. The first step in this process is peeling. A stainless steel drum or tank is filled with water, and then 3% caustic soda and 0.2% fruit and vegetable peeling agent are added based on the weight of the water. The solution is kept at a steady temperature of 58–60°C. Large, thick, and spicy red peppers are submerged for about 10 minutes. After draining the lye, they are rinsed thoroughly with water and transferred to a basin. At this stage, the waxy outer layer has softened and can be easily removed by hand. For better efficiency, high-pressure water jets are used to ensure all the skin is completely stripped away. Next comes the hardening treatment. The peeled peppers are soaked in a 0.5% citric acid solution for 20 minutes to neutralize any remaining alkali. They are then individually inspected, the core is removed, and all seeds are extracted. Following that, the peppers are soaked in a solution containing 0.5% calcium chloride and 0.2% alum for approximately two hours. This step helps firm up the pepper tissue, enhancing its crispness and overall texture. The third phase is the sugar process. A 40% sugar solution is prepared, and the treated peppers are hot-soaked at 58–60°C for one hour. Then, a 60% sugar solution is used for a 10-minute hot soak, followed by a 10-minute cold soak in a 40% sugar solution. This cycle is repeated several times—hot and cold soaking for 5–6 rounds—before the peppers are finally placed in an 80% sugar solution for one hour at the same temperature. This ensures deep penetration of sugar, resulting in a perfectly sweet yet spicy product. After the sugaring is complete, the peppers are placed on drying racks and spread out evenly. They are dried in a well-ventilated area at 40°C, with occasional flipping to ensure even drying. It's important not to over-dry them, as they should still maintain a soft, moist texture. Finally, the dried peppers are vacuum-sealed into 50g bags, typically containing two peppers each. Each bag is then immersed in 80°C water for 20 minutes to sterilize it, after which the surface is air-dried. Care must be taken during this step to avoid excessive heat or time, as this could negatively impact the crispness of the final product. Once packaged, the peppers are stored in a holding room for seven days, and each bag is checked for any signs of damage or leakage. Only those that remain intact and do not show signs of swelling are considered合格 products. These amber peppers have a shelf life of over eight months, making them a long-lasting and flavorful snack option.

API

what is API?

High-purity plant monomer refers to one or more single chemical components with specific biological activity or pharmacological effects extracted from plants, and its purity is usually high, meaning that the content of the component in the extract reaches a certain percentage, and the content of other impurities or irrelevant components is low.

These plant monomers are usually secondary metabolites of plants, such as flavonoids (flavonoids), alkaloids (alkaloids), terpenoids (terpenoids), phenolics (phenolics), etc., which play a variety of physiological functions in plants such as defense, signal transduction, and antioxidant. Due to their pharmacological activity, high-purity plant monomers are often used in pharmaceuticals, health products, cosmetics and other biotechnology products.

For example, Naringenin is a high-purity plant monomer extracted from citrus plants with antioxidant and anti-inflammatory activities; Corosolic acid is a high-purity active monomer extracted from loquat leaves, which is considered to be effective in treating type 2 diabetes and obesity.

Extraction and preparation of high-purity plant monomers usually require a complex separation and purification process, including extraction, column chromatography, crystallization, recrystallization and other steps to ensure the purity and activity of the final product. These processes may be required by specialized biotechnology companies.

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