Chestnut is a common fruit and is the king of dried fruits in the world. The main components of chestnut are soluble sugar, reducing sugar, sucrose, protein, crude fat, vitamins and minerals. Chestnut is closely related to children's intellectual development. It has the functions of nourishing kidney and spleen, relieving itching and diarrhea, promoting blood circulation and removing blood stasis, stopping bleeding and analgesia, nourishing qi and nourishing yin, clearing heat and dampness, etc. Modern medicine has shown that chestnut has a good therapeutic effect on hypertension, coronary heart disease, and arteriosclerosis.
In the 1990s, the deep processing of Chinese chestnuts had a certain scale. For example, canned sweet and sour chestnuts, fried chestnuts in sugar, chestnut jelly, chestnut wine, freeze-dried chestnut kernels, low-sugar chestnuts, etc. Among them, chestnut powder is more common, which was recorded as early as the Qing Dynasty. At that time, chestnut powder was a delicacy offered as a tribute to the emperor. Because of its good taste, chestnut powder was also widely used to make cakes and ice cream desserts.
Chestnut powder spray dryer
The processing technology of chestnut powder is as follows: selection of chestnuts→shelling→hot pressing→protection color→rinsing→beating→filtering→stirring→homogenizing→spray dryer→sieving→vacuum packaging. We started with the selection of fresh chestnuts and conducted a series of experiments to determine the ideal drying parameters of chestnut powder.
Because chestnuts have a hard red shell, if they are not cleaned during the shelling process, browning will appear. After many tests, it was found that there is a small gap in the chestnut shell. Put it into water at about 100°C and boil it for about 3 to 5 minutes. The chestnut shell can be easily removed, and the chestnut kernel does not have browning. This is why the heat press process exists. In order to prevent the occurrence of chestnut discoloration, it is necessary to add a certain color. After comparative tests, we found that composite color protectant is a good choice. Selecting a stabilizer can ensure that the chestnut powder has a uniform state during the dissolution process.
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