Effect of Storage Temperature on Preservation of Ginger
Objective:The effect of storage temperature on ginger preservation was investigated to determine the optimal storage temperature.Methods:Low field nuclear magnetic resonance,texture instrument and gas chromatography-mass spectrometry were used to evaluate the preservation effect of ginger at different storage temperatures.Results:According to the growth cycle,ginger can be divided into mother ginger,son ginger,grandson ginger and other parts,and the quality of different parts was different.The water state of mother ginger,son ginger and grandson ginger was different,among which grandson ginger A23 was the highest,and mother ginger A22 was the highest.The hardness of grandson ginger was the highest and that of mother ginger was the lowest.With the passage of storage time,the free moisture of different parts of ginger was transformed into Semi-free moisture.The hardness of ginger increased first and then decreased.The volatile components of alkenes in ginger were increased,while the alcohols and aldehydes were decreased.Compared with 0 day storage,the water status of ginger at 15 ℃ storage temperature remained basically unchanged,and the quality change was the smallest.Storage at 25 ℃ or 4 ℃would lead to rapid migration of free water and Semi-free water,and bound water was not affected by temperature.When the storage temperature was 25 ℃,the ginger was easy to spoilage and the hardness decreased.Under the condition of 4 ℃ storage,the ginger suffered from cold damage and the texture became soft.The change of storage temperature had no significant effect on the main components(alkenes)in ginger volatile oil.Conclusion:Storage temperature has a significant effect on the quality of ginger.Under the condition of relative humidity of 95％and storage temperature of 15 ℃,ginger has the best short-term storage and preservation effect.However,in order to achieve long-term storage of ginger,new preservation techniques and methods need to be studied.
GingerStorage TemperatureLow-field Nuclear Magnetic ResonanceWater MigrationHardnessTexturePreservation
万方数据
维普
