Energy Status and mitochondrial metabolism of Volvariella volvacea with controlled ultrasound treatment and relative humidity
XinYi Zan, Wei Jia, Hai Ning Zhuang, Feng Jie Cui, Na Li, Jing Song Zhang, Wen Jing Sun and Xiu Zhao
Postharvest Biology and Technology, Volume 167, September 2020, 111250
2020
บทคัดย่อ
The short-term postharvest of Volvariella volvacea (straw mushroom) is still a major challenge hampering its long-distance distribution due to chilling injuries at less 10 °C and rapid senescence at over 20 °C. Our previous study has developed a synergistic control of ultrasound and relative humidity (sCURH) to effectively delay the decay and senescence development of straw mushroom. The present study aimed to explore the possible mitochondria-related mechanism of sCURH to retain the postharvest quality of straw mushroom. Results showed that 10-minute ultrasound pretreatment and 15 °C high RH (95 %) could effectively maintain sensory quality and mitochondrial integrity, and down-regulate the activities and gene transcriptions of respiration-related enzymes (PGI, SDH, and CCO). Ultrasound pretreatment combined with 15 °C + 95 % RH remained the higher contents of ATP (>61.36 µg g−1), ADP (> 28.22 µg g−1), and energy charge (> 0.56), and a lower AMP content (<49.18 µg g−1) compared to those in at 4 °C and 15 °C low RH (75 %). Our finding indicated that the proposed sCURH method could significantly retain postharvest quality of straw mushroom by maintaining proper respiration rates, reducing the mitochondrial dysfunction and supplying sufficient energy.