Chestnut kernel is a good snack product. After purchase, you will find that the surface of chestnut kernel is golden yellow, bright color, and does not change color for a long time. So how did chestnut manufacturers do it? Let's understand the color protection process of chestnuts and chestnuts.
Chestnut kernel browning is mainly divided into enzymatic browning and non enzymatic browning. Therefore, in order to avoid browning, chestnut kernel is first treated as a passivating enzyme, and then treated with a color protection solution.
1. First, inactivate enzyme treatment. Immediately put the peeled chestnuts into hot water at 95 ℃ -98 ℃ for about three minutes to kill surface microorganisms and enzyme activity, and then take them out for cooling. It can be cooled in sections, first with water at 50 ℃ -60 ℃ for 1 minute, then with room temperature water for 1 minute, and then with cold water at 0 ℃.
2. After that, use the color protector to protect the color. The first is the manufacture of color protecting liquid. Mix 0.3% ascorbic acid, 0.7% citric acid, 0.3% phytic acid and 1% sodium chloride solution, and then protect the color of cooled chestnut and chestnut kernel. Soak it in liquid and take it out after about half an hour.
3. Then stop the hardening and drying of the extracted chestnut oil and chestnut kernel. In the hardening process, use 0.15% calcium chloride solution for about five minutes, and then use special equipment for drying.
After the above steps, the color of chestnut and chestnut kernel can be well maintained, and then the manufacturer needs to stop a series of sterilization, packaging and other processes in order to produce qualified chestnut oil and chestnut kernel products.
The above is the introduction of the color protection technology of chestnut kernel that Hebei Bingli manufacturer took you to know. Hebei Yanshanhong Food Co., Ltd., founded in September 2000, is a comprehensive production enterprise specializing in the R & D, processing, production and sales of chestnut, peanut and other agricultural and sideline products. The company covers an area of 20000 square meters and a construction area of 6000 square meters, including food processing workshops, low-temperature warehouses, quick-frozen warehouses and high-temperature warehouses. If you have any need, please contact us!