Persimmon off the astringent six methods

How to convert the soluble tannins in persimmon fruits into insoluble forms, so that people no longer experience the astringent taste, is a common concern when dealing with astringent varieties. There are several effective methods to remove this bitterness and improve the fruit's flavor and texture. Below are some of the most commonly used techniques. One popular method is the warm water technique. In this process, persimmons are placed in a large insulated container, often wrapped with straw curtains for better heat retention. The fruit is then submerged in warm water around 40°C and left to soak for 10 to 24 hours. This method helps preserve the original firmness and crispness of the fruit, while also maintaining its bright color and natural appearance. Another approach is the lime water method. Here, freshly prepared lime water (4% concentration using quicklime) is used to soak the harvested persimmons. After 2 to 3 days, the astringency is significantly reduced. This technique not only removes the bitter taste but also enhances the fruit’s crispness and overall flavor. A third method involves using ethylene-producing fruits like apples or pears. By layering 100 kg of persimmons with 3 to 5 kg of these fruits in a sealed container, the natural gases released during ripening—such as carbon dioxide and ethylene—help accelerate the softening process. Within 3 to 5 days, the persimmons become softer, lose their astringency, and develop a more appealing color and taste. The ethephon method is another modern technique. A 0.25‰ solution of ethephon is sprayed onto ripe persimmons just before harvest, or the fruit can be immersed directly in the solution for 3 minutes after being collected. After 3 to 7 days, the fruit becomes less astringent and more palatable. The carbon dioxide method is particularly efficient. Astringent persimmons are placed in a sealed container and exposed to carbon dioxide gas at a concentration of around 70%. If the container has a pressure gauge, the pressure can be increased to 0.7 to 1.2 kg/cm². This method is fast and effective, allowing the fruit to lose its astringency within 2 to 3 days at temperatures between 15 and 25°C. It also helps maintain the fruit’s firmness and makes it more suitable for storage and transportation. Lastly, the alcohol method uses 35% alcohol or white wine, sometimes mixed with a small amount of acetic acid, to treat the persimmons. The fruit is layered in a closed container and sprayed with the solution. The container is then sealed and kept at 18 to 20°C for 5 to 6 days. This method effectively reduces astringency and improves the fruit’s flavor. Each of these methods offers unique advantages, depending on the desired outcome, available resources, and time constraints. Choosing the right one can greatly enhance the quality and enjoyment of astringent persimmons.

Vitamin Series

Vitamin C is necessary for the formation of antibody and collagen, tissue repair (including some redox effects), metabolism of phenylalanine, tyrosine and folic acid, utilization of iron and carbohydrate, synthesis of fat and protein, maintenance of immune function, hydroxylation of 5-hydroxytryptamine, maintenance of vascular integrity, promotion of non heme iron absorption, etc. at the same time, vitamin C also has Antioxidant function, Anti free radicals, inhibit the formation of tyrosinase, so as to achieve whitening, light spot effect. In human body, vitamin C is a highly effective antioxidant, which is used to reduce the oxidative stress of ascorbate peroxidase (ascorbate peroxidase) Sch. There are also many important biosynthesis processes that require vitamin C participation.

Product Name: Vitamin C powder

Appearance: White fine powder

Identification: Positive

Acidity (PH): 2.4--3.0

Loss on drying: ≤0.2%

Residue on ignition: ≤0.10%

Sulphated ash: ≤0.10%

Heavy Metals: ≤10 PPM

Assay(C8H11NO3HCL): 99.0%-101.0%

Clarty and Colour of Solution: Meet the requirement

Chloride: 16.9%-17.6%

1. Common Cold Fighter

Why Choose us?

Product Recommended

Vitamin B2,Vitamin B6,Vitamin B12,Vitamin C

Xi'an Tian Guangyuan Biotech Co., Ltd. , https://www.tgybiotech.com