Heat pump drying method for marinated betel nuts

Abstract

The invention discloses a heat pump drying method for marinated betel nuts. The method comprises an initial stage, a drying stage and an ending stage, and high-temperature and low-humidity drying and normal-temperature and high-humidity tempering are combined for drying the betel nuts circularly; and finally, the betel nuts are post-treated in a low-temperature and high-humidity environment, and thus the taste of the betel nuts is remarkably improved. It is shown by a multi-stage circulating drying experiment result that the betel nuts can be well promoted to be tasty through normal-temperature and high-humidity tempering, the dehumidification purpose can be achieved rapidly through short-time high-temperature and low-humidity drying, and serious incrustation of the surface of marinade is prevented; compared with traditional marinated betel nuts obtained after being dried in shade, the marinated betel nuts are more aromatic; the purposes of shortening the drying time and improving the production efficiency are achieved; and the obtained marinated betel nut drying technique has important significance for the production practice and the realization of automatic production.

Description

technical field [0001] The invention relates to the field of drying technology, in particular to a heat pump drying method for effectively improving the quality of brine betel nut products through reasonable control of drying temperature and humidity. Background technique [0002] my country's betel nut consumption market is vast, and the processing process of betel nuts is roughly as follows: picking fresh fruit → cooking, flavoring → washing and baking → sorting, slicing → core removal, incense → brine, adding grapes → secondary drying (drying slices) → vacuum Package. Among the domestic enterprises engaged in the deep processing of betel nuts, most of them adopt the secondary drying process of indoor natural drying in the shade. Mainly rely on manual work, high labor costs, long drying time required, large floor area, serious loss of betel nut aroma and vulnerability to rodents and insects. In addition, a small number of enterprises adopt the hot air drying process, but ...

AI Technical Summary

Problems solved by technology

Among the domestic enterprises engaged in the deep processing of betel nuts, most of them adopt the secondary drying process of indoor natural drying in the shade. Mainly rely on manual work, high labor cost, long drying time, large area, serious loss of betel nut aroma and easy to suffer from rodents and insects

In addition, a small number of enterprises adopt the hot air drying process, but the hot air drying process will seriously dehydrate the shell of the betel nut, and the brine sticking to the middle of the betel nut is easy to crust on the surface during the drying process, while the brine in the lower layer is not dry, which greatly reduces the betel nut. The yield rate will ultimately affect the quality of the entire batch

In addition, the traditional betel nut secondary drying process still has the following shortcomings: low quality assurance, low drying efficiency, large influence of human factors, high cost, low degree of automation, etc. These shortcomings have seriously affected the further development of areca nut deep processing enterprises

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