Papaya crisp slices and preparation method thereof

Abstract

The invention discloses papaya crisp slices and a preparation method thereof. According to the method, the papaya crisp slices are produced by combining a microwave vacuum drying technology and a variable temperature and pressure difference puffing technology. The method comprises the following steps: drying papaya slices in a microwave vacuum manner under the conditions that the vacuum degree is 60kPa-100kPa and the microwave powder is 200W-800W until the water content is 20%-60%; and then putting the papaya slices into a puffing tank for variable temperature and pressure difference puffing, namely raising the temperature of the puffing tank to 60-120 DEG C under a normal pressure, stopping for 10min-30min, instantly reducing the pressure in the puffing tank to -0.01MPa, puffing 1-5 times in a vacuum state, cooling to 60-90 DEG C, keeping the vacuum state and the temperature until the water content of the papaya slices is 4%-5%, then cooling to 40-60 DEG and keeping the vacuum state for 15-45 minutes. The papaya crisp slices produced by the method keep the original color, flavor and nutrition of papayas, have a crispy mouth feel and can be directly used as a snack food and also be used as raw materials for making the papaya into powder. Meanwhile, the drying time is shortened to 3-6 hours by the method; compared with a traditional drying method, the method has the advantages that the efficiency is improved and the energy consumption is reduced obviously.

Description

technical field [0001] The invention relates to the technical field of food processing, in particular to papaya chips and a preparation method thereof. Background technique [0002] Papaya, commonly known as papaya, longevity fruit, etc., is a perennial evergreen herb belonging to the papaya family Papaya. It is native to southern Mexico and Central America. It has been planted in China for more than 300 years. Guangdong, Guangxi, Hainan , Yunnan, Fujian, Taiwan and other provinces are cultivated. Papaya has extremely high edible value and health care value. Its fruit, seeds and leaves can be used as medicine. Ripe papaya can also be made into beverage, syrup, pectin, ice cream, preserved fruit, dried fruit, etc. Papaya is a climacteric fruit. After being harvested, under the influence of climate, diseases and insect pests and other factors, it is easy to soften and ripen, become diseased and rot, and lose its commodity value and edible value. Drying is an important means ...

AI Technical Summary

Problems solved by technology

Traditional hot air drying takes a long time and has low efficiency, which will have a negative impact on the final puffing effect of the product. It is necessary to find a high-efficiency pre-drying method, combined with variable temperature and pressure difference puffing, to achieve energy saving and improve quality.

Images