Chinese Agricultural Science Bulletin
Abbreviation (ISO4): Chin Agric Sci Bull
Editor in chief: Yulong YIN
Study on Lignification Dynamics of Dendrocalamus brandisii Shoots Under Low Temperature Preservation After Harvesting
WEN Yuzhuo, LI Luxi, XU Jingyun, LIANG Xiejun, LUO Wei, BAI Tiandao
Chin Agric Sci Bull ›› 2025, Vol. 41 ›› Issue (24) : 135-143.
Abbreviation (ISO4): Chin Agric Sci Bull
Editor in chief: Yulong YIN
Study on Lignification Dynamics of Dendrocalamus brandisii Shoots Under Low Temperature Preservation After Harvesting
In order to provide a theoretical basis for the preservation technology of Dendrocalamus brandisii shoots after picking, the alleviating effects of different low temperature preservation methods on the lignification process of D. brandisii shoots after harvesting were investigated. In this study, the bamboo shoots of D. brandisii from low hilly forest in Guangxi were used as research materials to analyze the changes of lignin, crude fiber content and key enzyme activity of lignin synthesis within 0-10 days after low temperature (4℃) vacuum storage and low temperature sealed storage. The results showed that the contents of lignin and crude fiber in bamboo shoots increased in different degrees within 1-10 d under the two cryopreservation methods. Vacuum treatment could effectively inhibit the synthesis of 43.21% lignin and 28.61% crude fiber. The total phenol content under vacuum treatment always maintained a continuous downward trend, while the total phenolic content decreased under sealing treatment until the 5th day and showed a certain degree of recovery. The phenylalanine ammonia lyase (PAL) activity of bamboo shoots under the two treatments showed a trend of decreasing first and then slowly increasing within 0-2 d, and the PAL activity under vacuum treatment was significantly lower than that under sealing treatment from the 3rd day (P<0.001). Principal component analysis and correlation analysis showed that lignin, crude fiber and PAL activity were positively correlated with storage days, and negatively correlated with total phenols. The results showed that total phenol, lignin, crude fiber content and PAL activity were the main response indexes in the lignification process of D. brandisii shoots after harvesting. The physical preservation method of 4℃ low temperature vacuum preservation can effectively delay the lignification process and the rapid decline of taste quality of bamboo shoots.
Dendrocalamus brandisii shoots / lignification / cryopreservation / enzymatic activity
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