A kind of fig freezing, thawing preservation method

Abstract

The invention provides a fig freezing and thawing preservation method. A TPA and puncture experiment is performed on fresh figs picked from a Binzhou Zouping Shangzhi fig planting base. Under freezing and thawing conditions, at regular time intervals, the figs are taken out for measuring 7 texture parameters such as peel hardness, peel rupture distance and the like. All texture traits are significantly changed in the freezing and thawing processes. Peel brittleness, peel hardness, pulp hardness and the like appear similar change along with the increase of the freezing or thawing time; stability values of change curves of freezing and thawing texture characteristic values are similar, namely a freezing initial value is similar to a thawing final value. For the first time, about 3h is determined to be a texture change critical point in the fig freezing process, while about 40min is determined to be a texture change critical point in the fig thawing process, so that during processing, transportation and storage of the figs, after the figs are frozen for about 3h and thawed for about 40min, the texture characteristics of the figs are basically consistent with those of the fresh figs.

Description

technical field [0001] The invention belongs to the field of freezing and processing figs, in particular to a method for freezing and thawing fresh-keeping figs. Background technique [0002] Fig (Ficus carica Linn.) is a flowering plant belonging to the genus Moraceae. It mainly grows in some tropical and temperate regions and is a subtropical deciduous small tree. There are currently 800 known varieties of figs, most of which are evergreen varieties. Only those that grow in temperate regions are deciduous varieties. The fruit tastes strong and sweet. Studies have found that figs are rich in nutrients and have health effects, can lower blood pressure, anti-aging, improve the body's immunity, treat high blood pressure, high blood fat, coronary heart disease, diabetes, senile constipation and other diseases, especially anti-cancer and reduce the toxicity caused by chemotherapy. The effect of side effects is a fruit with great development and application prospects. The food ...

AI Technical Summary

Problems solved by technology

However, the quick-freezing process has high requirements on equipment, and requires the fruit to have good processing adaptability

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