| 【Objective】 In order to prolong the post-harvest preservation period of Amorphophallus paeoniifolius
stalk and taro stalk, the physiological and biochemical changes of Amorphophallus paeoniifolius stalk and taro stalk were
studied preliminarily. 【Methods】In this paper, the changes of water content, respiration rate, sugar and crude fiber content
in the stalks were monitored to investigate the changes of the quality of A. paeoniifolius stalk and taro stalk under different
temperatures and preservative conditions. 【Results】The results showed that the storage time of A. paeoniifolius stalk and taro stalk at room temperature was 12 d and 14 d, respectively, and the storage time was 25 d and 29 d under the temperature
of 4℃ . The storage time of A. paeoniifolius stalk and taro stalk with different preservatives added at room temperature was 13d.
The respiratory intensity was low and fluctuated around 0.015 mg/kg.h CO2 during the storage period. The initial water contents
of A. paeoniifolius stalk and taro stalk were 93.63% and 93.77%, respectively. and at the end of storage, the water contents at
room temperature were 87.19% and 86.29%, respectively, while the water contents under the temperature of 4℃ were 92.15%
and 93.00%, respectively. There was no significant effect on respiratory intensity at 4℃ and room temperature (P>0.05). The
loss of water content of the stalks could be significantly delayed during the whole storage period under the temperature of 4℃
(P<0.05). Under the conditions of 4℃ and adding with preservative, there was great influence on the contents of reducing sugar,
total sugar and crude fiber at pre-storage period, and little effect on the quality change at the late stage of storage.【Conclusion】
The preservative could only delay the change of nutrients in A. paeoniifolius stalk and taro stalk to a certain extent during
the storage process, but it had no obvious effect on prolonging the preservation period. When the stalks were stored at low
temperature, water loss and quality deterioration were slowed down, which could effectively prolong the shelf life, and was a
more suitable storage method for A. paeoniifolius stalk and taro stalk after harvest. |
