Process for preparing canned sweet potato

Abstract

The invention discloses a process for preparing a canned sweet potato, and relates to the technical field of can processing. The process sequentially comprises the following steps: peeling; chopping; rinsing; blanching; tinning; injecting a cooking liquor; sealing in vacuum; sterilizing; and cooling. The process is characterized in that the blanching comprises the following sub-steps: putting chopped sweet potatoes into a mixed solution containing 0.1%-0.2% of calcium chloride and 6%-8% of sulphurous acid, soaking for 8-10 minutes, and cleaning and rinsing with clean water, wherein the temperature of water for blanching is set to be 70-90 DEG C and the lasting time is 8-10 minutes; the step of injecting the cooking liquor comprises the following sub-steps: heating the cooking liquor containing 0.6% of table salt, 1% of white sugar, 0.2% of vitamin C and 0.03-0.04% of citric acid until boiling, cooling the cooking liquor to 80-90 DEG C, and then injecting the cooled cooking liquor into a tank, wherein the weight of the cooking liquor is not less than 50% of that in the tank. The process is convenient to operate; processed bamboo shoots are good in mouthfeel, good in taste, convenient to process and store for a long period of time, not easy in changing of color or going bad, and good in quality.

Description

technical field [0001] The invention relates to the technical field of canned food, in particular to a preparation process of canned sweet potato. Background technique [0002] Canned food is adapting to people's daily needs due to its convenience, sanitation and easy storage, and is increasingly popular. In addition, the consumption level of canned food in our country is still very low. In terms of per capita annual consumption, the United States is 90 kg, Western Europe is 50 kg, Japan is 23 kg, and my country is only 1 kg. It can be seen that the domestic market has not really started yet, and the potential is huge. There are many kinds of canned foods including canned foods such as vegetables, fruits, aquatic products, meat, etc. In the prior art, the canned potato meat made of sweet potatoes is all cooked, and the cooked sweet potatoes are easy to change color after being preserved for a long time, especially the sweet potatoes. After the surface is cooled during proc...

AI Technical Summary

Problems solved by technology

There are many kinds of canned foods including canned foods such as vegetables, fruits, aquatic products, meat, etc. In the prior art, the canned potato meat made of sweet potatoes is all cooked, and the cooked sweet potatoes are easy to change color after being preserved for a long time, especially the sweet potatoes. After the surface is cooled during processing, it is easy to form a dark oxide layer, which will affect the taste and quality of sweet potatoes