Crispy snack processing, application of microwave on sugar coated potato chips
Crispy snacks such as yam slices, potato chips, sweet potato chips, popcorn, etc. on the market are deeply loved...
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Crispy snacks such as yam slices, potato chips, sweet potato chips, popcorn, etc. on the market are deeply loved by everyone. In addition to frying and baking, many products also undergo sugar spraying and seasoning treatment, which results in a sweet and fragrant snack flavor. However, the desire for a crispy and non soft texture also poses significant challenges to production.
Taking sweet potato chips as an example, after the sugar spraying process, the surface of the sweet potato chips is coated with a layer of sugar solution, and the sugar itself contains moisture. If the subsequent drying process is not in place, the finished product is prone to moisture absorption and softening, losing its crispy texture; Sugar in humid environments can also easily breed microorganisms and shorten shelf life.
Faced with the pain point of drying and sterilizing sugar coated snacks, many food processing factories now use microwave tunnel ovens to perform integrated drying and sterilization treatment on sweet potato chips after sugar spraying processing.
The material is continuously transported and processed in a closed environment, and microwaves can penetrate into the interior of the crisps to simultaneously remove excess moisture inside and outside, without the need for prolonged high-temperature baking. It can effectively preserve the original color of the sugar coating and avoid the problem of large-scale coking and edge sticking. Simultaneously achieving sterilization while reducing moisture content, inhibiting the growth of mold and bacteria, extending product shelf life, and reducing the use of preservatives.
Compared to traditional techniques, it does not require prolonged heating, and the crispy texture of sweet potato chips can be well preserved without easily drying out. Continuous operation on the assembly line, suitable for large-scale snack production.
Of course, the process selection is not singular, and many manufacturers will combine hot air pre drying with microwave treatment. Hot air first removes most of the moisture, and then uses microwaves for deep drying and sterilization, balancing production efficiency, finished product taste, and food safety to stabilize the quality of sugar coated sweet potato chips.
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